Finally! KEF KC62 Test: CEA-2010A Data!

Рет қаралды 57,896

10 ай бұрын

I forgot to mention this subwoofer was loaned to me by KEF for review. I was not paid for the review and no one at KEF has seen the data before the public has.
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Пікірлер: 188

@ErinsAudioCorner 10 ай бұрын

KEF’s little KC62 performs better than I expected, exhibiting CEA-2010A numbers at 20Hz that rival larger subwoofers. Can it take the place of a 12” or 15” subwoofer? Certainly not. But if you need something small and aren’t trying to set SPL records I’m not aware of anything that beats the KC62 (objectively speaking). 🛒🛒 Purchase: Amazon: amzn.to/45VyDwT Audio Advice: www.audioadvice.com/?referral=erins-audio-corner Best Buy: howl.me/ckCCe6kvxNg Crutchfield: howl.me/ckCCbjXueOp

@Audio_Simon 10 ай бұрын

It's a very impressive small sub, but it's also more expensive than most of the small stand-mounts out there!

@MechAdv 10 ай бұрын

Yeah, it’s 400$ more expensive than my PC2000 Pro SVS boom tube. It’s the same price as the Monolith 2000W 13” THX Ultra sub I’ve been eyeing. I know which way I’m spending my money lol.

@Audio_Simon 10 ай бұрын

@StudlyDudly Yeah well.. monolith is incredible value for money but based on what worker conditions and extortion of the environment in Taiwan? KEF OTOH is a British company down the road from me that treats people decently. I'm not exactly sure where this sub is made but I certianly have a better feeling about it!

@MechAdv 10 ай бұрын

@@Audio_SimonTaiwan isn’t known for terrible worker conditions, actually Taiwanese manufacturing is usually on par with Korean and Japanese manufacturing. Every state of the art computer chip is manufactured in Taiwan. HOWEVER, the monolith 13 ultra is actually manufactured in China, and that’s a whole nutha story for worker rights/protections. I actually thought they were manufactured in the USA like the Monolith THX amplifiers (2x, 3x, 5x, 7x). That’s kinda disappointing, but with a 5 year replacement warranty and a 45 day full refund window, clearly these are being made to a high standard of quality.

@c0mbat15 10 ай бұрын

You're right that it's really expensive. But here in the UK the price differential with the SVS Micro 3000 isn't nearly as big as it is in the US. I actually purchased the SVS 2000 Pro, the SVS Micro 3000 and this KC62 all second hand from ebay and stuck with this. Despite what SVS say the 2000 Pro didn't work in a small room and sounded boomy no matter where I stood in the room. The Micro 3000 and KC62 were close and if I was paying US prices I would have stuck with it. But the KC62 beat it in terms of being able to go slightly lower and integrating slightly better with my Q Acoustics Q Active 200 speakers

@GadgetyMV 10 ай бұрын

Love the thoroughness, detailed discussion and brief comparison to the SVS. I could see a multisub solution with several small subst, too.

@shaymcquaid 10 ай бұрын

Looking forward to seeing the wrap up! Thanks Erin.

@raybensinger8383 10 ай бұрын

Ive been intrested im the kf92 for awhile cant wait to see that data thanks for all the hard work erin

@rbrant65 9 ай бұрын

Glad I found your channel. Really appreciate your sincere, unbiased reviews.

@ErinsAudioCorner 9 ай бұрын

Thanks!

@davids2214 10 ай бұрын

No mention of the high pass filter built-in! One of the coolest features of this sub imo, adds functionality most integrated amps lack.

@ErinsAudioCorner 10 ай бұрын

Edit: Yes, you are correct.

@juliangst 10 ай бұрын

@@ErinsAudioCornerthe line out has a high pass filter which is adjustable through the dip switches.

@ErinsAudioCorner 10 ай бұрын

@@juliangst oh, yes. I didn’t test that and indeed didn’t mention it in the review.

@michaeljohansson3882 10 ай бұрын

The function solves the low end challenges with R3 Meta/LS50 - compression/distorsion below 80 Hz. Great feature.

@ErinsAudioCorner 10 ай бұрын

@@michaeljohansson3882 indeed.

@andres77fj 10 ай бұрын

I really appreciate the great reviews! So helpful and interesting :)

@ErinsAudioCorner 10 ай бұрын

Thanks!

@edwardroman6844 6 ай бұрын

I really like your honesty. Great job.

@ErinsAudioCorner 6 ай бұрын

I appreciate that!

@stephenhall3515 4 ай бұрын

The usual very high standard from Erin. He never argues with laws of physics and conveys this superbly to people who might be new to improving audio.

@ValerioCongeduti 10 ай бұрын

Very informative review! Thank you! I happen to have just bought one, and my trial period is about to end. I've been on the fence between this and the Rel t7x. For this reason, since you are testing several subs, I think it might be interesting to test Rel claims through some measurements. In particular I'd be curious to know whether the famous Rel high level inputs actually make a difference or not.

@rikardekvall3433 10 ай бұрын

Erin you does boost the bass. Question. How do I measure my subs, one 12” sealed front firing and one 8” down firing with a big port. Where do I place the UMIK mic? 1m/1watt?

@roberleiton 8 ай бұрын

Thanks Erin for your reviews! Its very helpful. In your opinion is better two rel t7x or one K62, for pairing a LS50 Meta or R3?

@phillipmorris9847 10 ай бұрын

Ive heard it and was impressed for its size, perfect for my space but not at the asking price

@Natan9000 10 ай бұрын

So what you’re bassicly saying is that’s it’s perfect for smaller rooms. But in terms of m2 what do you consider small or medium?

@mpugne 10 ай бұрын

I always wondered how close they got the drivers to match each other not that it would matter much as long as they are in the same ballpark but just curious.

@NitishRaj 8 ай бұрын

Sir I am about to buy KUBE 12b . Will it be better choice for reaching 20Hz at mid volume

@JohnSmith-qi6co 10 ай бұрын

KEF apparently has really good engineers. Hard to not like that company. They seldom do anything that isn't absolutely excellent.

@1Aquadon 10 ай бұрын

Thanks Erin!!

@markpearson1006 9 ай бұрын

Thank you for your channel. I have owned the LS50 Wii plus a single KC62 for about a month. Im still trying different locations and set ups but overall I would say that the sound quality of the system is very good ie it is detailed and clear. It seems best at lower to mid volumes in a room 8m x 8m x 2.4m high. As volume is raised the bass drops off but the overall sound is still loud. At these higher volumes is sounds a little harsh but detailed. I have found best bass with the KC62 plugged into the smart connect RCA/LFE in manual/polarity on and am still testing various other settings. This is as you described. I think if you are a power user - loud rock, drumnbass - this system is not for you. I would recommend that you need to try this system before buying as it was £3,700 (GBP) with some current offers in the UK

@annenominous7220 10 ай бұрын

Outstanding, as usual. Thanks!

@ErinsAudioCorner 10 ай бұрын

Thanks!

@fransdoolaar3975 10 ай бұрын

Nice review. With the growing capabilities and subwoofer outputs of processors (even combining LFE + speaker support) it would be interesting to consider to use more 2 or more KC62s in stead of one. That way the combined SPL for LFE increases and the homogeneity of bass production in the room may increase. Also, the limiter on SPL in the lower regions when used as for speaker support may be less likely to be noticeble as the rest of the speakers already produce sound and the combination may be ear bleedingly loud anyway. Yes, obviously, if it can do the SPL all by itself that would always be better and less compromising ;)

@MRPC5 10 ай бұрын

Am i correct in thinking this limiting would mess with an auto cal like Audyssey even in a smaller room? Thanks!

@ErinsAudioCorner 10 ай бұрын

You’d need to be aware of it and the volume you’re setting it as the reference.

@ron521 9 ай бұрын

What about subwoofers that have the driver directed to the floor such as the REL 98? Would you test it laying on the side? I was incapacitated when my wife left me. Glad to see you have at least recovered enough to get back to work.

@michaelharness3258 10 ай бұрын

Good to see you back on the KZfaq. How’s the new chapter in life going ?

@ErinsAudioCorner 10 ай бұрын

Thanks. It’s going pretty good at least up until I injured my back couple months ago and it’s been a slow recovery process. But I appreciate you asking.

@michaelintyghvalley 10 ай бұрын

@@ErinsAudioCorner oh! The price of having fun. Ouch! Glad to hear that you are doing well.

@johnanderson4064 10 ай бұрын

I'd be very curious to see how this compares to the 8 inch Monoprice you just reviewed. That seemed like a fantastic small room sub at a great value.

@ErinsAudioCorner 10 ай бұрын

Soon! I plan to make a video comparing a few different small subs once I finish testing the other subwoofers I have on hand. 👍

@BL-yj2wp 10 ай бұрын

@@ErinsAudioCorner Please consider reviewing the Dynaudio 9S too. It's a small (SVS 3000 Micro size) studio sub they make big claims about.

@BobGeogeo 10 ай бұрын

@@ErinsAudioCornerPlease include in your comparison the tested low-cost subs from a while back. I'm very happy with a pair of ELAC Sub1010s you recommended but sad to see current pricing is a lot higher than the $130 I paid for each.

@lvlfk 9 ай бұрын

@@ErinsAudioCorner I need to replace my Dayton 1200 with something smaller so I’ll be waiting for that round up!! Right now my front runner is the 8 inch Monoprice THX.

@onortosu 10 ай бұрын

Thank you Erin! Any chance you have or plan to review JBL's LSR310S ? It often goes on sale for a decent price, good controls, like that it can do the crossover for balanced, but no idea how well it performs. You can probably buy 2 of them for less than 1 of these other options which might not have the crossover options builtin.

@ErinsAudioCorner 10 ай бұрын

It’s not currently planned. But it could happen one day.

@ricardodiaz1753 10 ай бұрын

Dumb question, what are the rca outputs in a subwoofer for?

@dexterts1 10 ай бұрын

Hi Erin,since you have a lot of small subwoofers for testing,it would be really interesting to get B&W ASW608 for comparison,as they can be had for a good price

@ErinsAudioCorner 10 ай бұрын

Probably not anytime soon. I’ve got a lot to get through here first.

@gamerpaddy 10 ай бұрын

have you got your hands on a sunfire xteq or true yet? only downside to them is they use a passive rad on one side making them wander around the room. 10 inch subs have a fs of 24hz

@ErinsAudioCorner 10 ай бұрын

I haven’t.

@danielezzet8870 10 ай бұрын

This sub is just perfect to use with a high crossover since it use small drivers that had better dispersion than a 10 inch driver around 100-140 hz, right?

@ErinsAudioCorner 10 ай бұрын

Yep. But don’t place it too far away with a crossover that high. Subwoofers need to be integrated like any other driver in a speaker so make sure that you are mindful of the radiation pattern and combing effects of placing speakers (subwoofers + mains) too far apart.

@deankim6687 10 ай бұрын

Great review

@sudd3660 10 ай бұрын

i really like these micro subwoofers, had a few myself, like the velodyne microvee. I wonder if you can post a 20hz measurement in room max db. does room gain increase the db or what can people expect in room. for comparison my diy sealed subwoofers with a 10" woofer in each does 107db at 12hz in room at listening position, with a 100watt amp.

@JoshM7 10 ай бұрын

If you toss this in a room with the longest dimension 12 feet or under. You might get around 95dB + or - a few dB at 20Hz. As usual depends on the room/placement/listening position. Now if you were feeling silly and tossed it in a car. You might get around 100dB at 20Hz+. But I doubt anyone will be cool enough to toss one in the car and measure what it can do. (Bashfully looks towards Erin. lol)

@sudd3660 10 ай бұрын

@@JoshM7 i know some bass is location dependent, but below 20hz in a small room it is even everywhere. maybe a bit louder right near the woofer. i was thinking that 107 is needed to make 12 hz perceptible in this room, does that translate to any room? measured from listening position. the importance of the lowest frequency target is that if you can reach that then the rest should be easier.

@JoshM7 10 ай бұрын

@@sudd3660 If 12Hz is perceivable to you at 107 then if you can do 107 in another room, yes it'll translate to other rooms. But some other rooms might have a higher noise floor or rattle more which makes it harder to hear it at that specific level. Also have to be careful you're not hearing distortion vs the fundamental. At 12Hz you're more sensitive to distortion than at 40Hz for example. And under 20Hz can depend on placement still I think. Edit: Was playing around with tones under 20Hz and I guess they are even almost everywhere. Closer to 20Hz getting near the sub looses a dB or two but ultimately I guess under 20 is even almost everywhere in small rooms like mine. Could have sworn in the past I had areas in the room that were louder and quieter with low bass. But I almost never move around when listening to something with low bass and never think about it these days.

@charleskatz2606 10 ай бұрын

Erin would be great if you could try out one of the new Magnepan collum sub+ but this was great these look like natural for Meta R3's if a tad pricey

@unewb 10 ай бұрын

I love this sub. I feel like the opposing driver design would make it have less sub crawl because of the cancellation, like some smaller subs often do.

@ErinsAudioCorner 10 ай бұрын

Definitely. It didn’t move while I was demoing it. Can’t say that about other subs.

@chinmeysway 10 ай бұрын

@@ErinsAudioCornera pub crawl is almost like a sub crawl but I can’t remember why.

@NigelStronge 10 ай бұрын

You can use opposing drivers (and the sealed cabinet size) to limit the driver extension and dual voice coil for feedback which cancelled out the box and frequency limitations that would normally apply.

@stackoverflow8260 10 ай бұрын

Can you please do a review of Rythmik FM8?

@altruistvideo 6 ай бұрын

Thank you for your professional reviews. I am faced with the choice of purchasing a REL T/9x and a 23-year-old ELAC Varro RS700 model. I've been reading and watching reviews for several months. Was it possible to compare both? I'm only interested in music, not movies. I will be very grateful for your answer. (Alexander)

@ErinsAudioCorner 6 ай бұрын

I’d take the KEF over the REL, personally.

@lordofthemound3890 10 ай бұрын

How about testing the Emotiva Se12? They’re on sale for $269. I’d like to see how it stacks up against other bargain subs.

@eyeshezzy 10 ай бұрын

been waiting for this at your corner for a while. Now i am waiting for JL subs too😅

@ErinsAudioCorner 10 ай бұрын

Soon!

@EvgenyLebedevMusic 7 ай бұрын

hey Erin! what sub cable should i use with kc62? now i am using inakustik star. is it necessary to make an upgrade, or it's a snake oil?

@ErinsAudioCorner 7 ай бұрын

Pretty much snake oil.

@EvgenyLebedevMusic 7 ай бұрын

@@ErinsAudioCorner thanks, mate!

@dananskidolf 10 ай бұрын

I came across a bit of a debate while looking into dual opposed subwoofer designs like this - seems many people have the impression it reduces the sensation of those low frequencies hitting you, possibly because the sub (and floor it's on) has negligible net force on it, rather than the full force you'd get from a single unopposed driver. Erin, given you've heard and tested more subs than most, have you experienced this difference - subjectively or through any kind of measurement? And thanks for another great review :)

@ErinsAudioCorner 10 ай бұрын

That’s a very good question. I will give you my personal opinion. Not necessarily rooted in fact, but just anecdotal based on experience. The sensation of bass can help improve the sense of output. However, the issue I have is that many times the trade-off is that you hear things rattling in the room. Those vibrations go somewhere and sometimes are transmitted through the floor into walls, doors, etc. resulting in doors or pictures vibrating or furniture vibrating. Those vibrations and rattles are an audible distraction and severely override the impact you may feel from tactile feedback.

@dananskidolf 10 ай бұрын

@@ErinsAudioCorner That's a very worthwhile consideration, thank you! Something to bear in mind as I plan a home theatre. I think both aspects you describe fit in with my expectation from general wave behaviour, that a air/solid boundary generally reflects sound because the speed of sound changes abruptly across that interface, so a speaker that only moves air, even with the same SPL, won't rattle either you or the nearby picture frames with the power transfer efficiency of one that also puts forces on the floor.

@ddobster 10 ай бұрын

it's damn fine with a pair of R3 in a small-ish room i hate the auto-on tho, it's a pita to turn on sometimes at lower volumes

@lextr3110 10 ай бұрын

Would love if you could review rythmik FM-8

@GracedSeeker763 6 күн бұрын

I was hoping to see it in use. Because I’ve heard the travel on the speaker is crazy

@user-xl4nt8ep8d 10 ай бұрын

Whats small/medium room size for you, in sqm (for all other countries except USA:)? I use KC62 and am very satisfied with it. Its only for music. Even i have somewhat big floorstanders, sub adds a bit of kick and low definition, specifically if you want to put main speakers a bit far from the wall, where imaging and sound stage is the best, and then use sub to compensate for a slight lack of lows because of no SBIR. Also, another trick i use - if there's a room resonant mode because of speaker position, put port bungs to make speakers a quasi sealed box, of course if they support that, and then put sub where it doesn't excite room modes that much. Works great for me. Only negative for this sub - no mobile app to tweak settings like with SVS, so you have to get up, change settings, sit down, repeat...

@keepingupwiththejones2933 10 ай бұрын

This is cool for people with limited space.

@ferdinandbardamu3945 10 ай бұрын

With so many settings on subs it's a wonder Erin has the time to listen to Young Jizzy.

@davistaishi 2 ай бұрын

what about distortion?

@seanb3303 10 ай бұрын

I think Auto EQ is a game changer. Elac came out with it a few years ago and hopefully SVS and others catch up.

@sudd3660 10 ай бұрын

auto eq it is like a auto limiter. keeping the frequency response extended as low as it can with the volume. perfect for adding more subwoofers in the future. i did my own eq to get the lowest bass, at the cost of max volume when content has deep bass. i have no safety line since it is doyi subwoofer.

@seanb3303 10 ай бұрын

@@sudd3660 ELAC auto EQ is different than a limiter in that it measures the response from your listening position and adds EQ to provide a more LINEAR response. I believe it also controls phase and the crossover

@DavidSusiloUnscripted 10 ай бұрын

Paradigm, MK Sound, JL, Martin Logan, and more have used Auto EQ since almost a decade ago.

@seanb3303 10 ай бұрын

@@DavidSusiloUnscripted Elac uses a cell phone app which is really nice. I’m guessing those companies you mentioned include a microphone

@caioferrari 10 ай бұрын

Other brands are finally using dynamic EQs like Bose uses a long time ago on its speakers to make it sound better

@maymanist 10 ай бұрын

Very interesting and informative review, thanks! I am looking to buy eityer tye kc62 or the rel t7x tobpair woth my Falcons LS35A golds. Just that the kc62 costs nealry twice that if the rels in my country. This sub is expensive

@nhennessy6434 10 ай бұрын

If you have a little more room, and your own dsp/crossssover unit, SVS' all time best seller, the OG SB2000 with a 12" woofer is selling on their outlet site for $500. You could get two and still pay less than for the KC62. Just saying.

@user-gm3ze7qu8r 10 ай бұрын

The Kali Audio WS 6.2 is one I am curious about. Franz

@ErinsAudioCorner 10 ай бұрын

Coming soon. Just got it yesterday. 👍

@stephenderluguian6776 10 ай бұрын

@@ErinsAudioCorner super curious as well. mines im the mail!

@adaboy4z 10 ай бұрын

Kef makes good subs, I have the Kub 12b. I also have a 6 inch Episode Evo and a good built small sub will surprise you, but as you said it lacks that killer hit you in the chest SPL.

@pumpituphomeboy 10 ай бұрын

I have 2 kube 12b's. A pair of them provides plenty of slam.

@nmnate 10 ай бұрын

Awe, it's so cute. Too bad at $1400 it has to compete with something like a Rythmik E15 if you're willing to go much larger in size. I've got a moderately large room so, I'm obviously going to preference a bigger sub. I'd have to say it's a pretty slick package for those that need or prefer a really small sub for a small space. I think dipole makes a lot of sense for a sub, especially a small one.

@lllllllllllllllllllll1lll1 10 ай бұрын

Agreed, it has some tough competition at the price point. If I was looking to spend that kind of money, I'd opt for the KEF for my small living room. Perfect for the room size and my (rather minimal) SPL requirements. I could also see myself pairing it with studio monitors for a bedroom studio environment. Perfectly suited for that application. but agghh... $1400... that's some serious coin 😂

@nmnate 10 ай бұрын

@@lllllllllllllllllllll1lll1Yeah agreed. When I upgrade my LS-50s, I might stick them in a bedroom. This kind of sub might make a ton of sense. The high pass filter is really appropriate for that application.

@RennieAsh 10 ай бұрын

11:00 perhaps the volume is too loud and that's why they're all squished together?

@ErinsAudioCorner 10 ай бұрын

That’s what compression/limiting is. That’s what I’m talking about. 😉

@proffessasvids 10 ай бұрын

Lovely vid dude! Thank you for the info. I wanted to know about the actual performance of this woofer. Xx

@damo5701 10 ай бұрын

Was originally looking at the SVS 3000 but one dealer (local as well) offered to match the best price I received on the LSX II's & SVS3000 combo and substitute in the KC62 instead for the same price. I wouldn't let price deter you, KEF have regular sales and it is often possible to get sizable discounts. Very good sub, I have it paired the KEF LSX II active speakers in a computer/2nd lounge room approx 8mx5m, mostly for music. To my ears in my listening space, fwiw, the combination is magical, with revealing detail and clarity, little if any brightness and no fatigue, and plenty of body. The LSX II's by themselves have ok bass extension but the sound moves into a completely different league when paired with the KC62, integration is easy & tweekable, soundwise they also integrate almost seamlessly. The KC62 provides plenty of tight controlled extended bass, delivered with solid punch and fast pace. To achieve preferred listening setup the KC62 actually needed to be dialled right back, bass output is not an issue, although I have not used for HT so check that out for yourself. I'm surprised at how good the stereo imaging is in near field listening, vocals are directly centered and seem to come from the screen in front, the soundstage can extend beyond the speakers with some music. Very impressed with the setup's ability, particularly the KC62, to scale and fill the space when cranked up yet still sound fantastic in quiet near field listening.

@ryanuptheroad 10 ай бұрын

I'm running the same combo. I just left the settings alone after telling the KEF app that I was using the KC62. Really happy with the result. Have you found it worthwhile to mess further?

@damo5701 10 ай бұрын

Initially found the KC62 overpowering with out of the box settings and original placement. Changed where the computer and speakers were positioned in the room and played with settings in the app. Certainly worthwhile to get the sound you like. Sometimes I tweak the speaker/subwoofer balance and subwoofer volume settings in the app when playing different styles of music or to add bass to some recordings. Not exactly sure what the speaker/subwoofer balance does, it seems to change the crossovers, as too much subwoofer balance made the KC62's location detectable, ended up setting it to almost all speaker.

@daimozu 9 ай бұрын

You only need this if you care about bass note/definition and accuracy in your low end frequency. I have a pair of kc62 on my main reference system. my single svs2000 pro has better spl, but I cant hear any bass definition because of its sheer power. Kc62 is like a sports car, while my sb2000 pro is like muscle car. each has its own purpose.

@mndlessdrwer 10 ай бұрын

If you've got a small room, then the KEF LS60 and one of these should be plenty. Honestly, the LS60 on its own is probably good enough for the vast majority of music out there, since not all that many artists like to slam sub-40Hz beats that often. I've got a pair of KEF iQ90 and they're just about good enough in the low end that I rarely think about adding a sub when I'm just listening to music, and my music preferences are esoteric enough that there are actually some songs that try for that sub-bass slam. It's generally not necessary as long as your speakers can hit 40Hz with an acceptable degree of authority.

@wktek48 10 ай бұрын

Would it be good enough as a second sub next to couch in combination with the svs 2000 pro? I have a small/ medium room..

@welderfixer 10 ай бұрын

Subwoofer are great, but the effort needed to integrate a subwoofer into a sound system is huge. I recommend packing a lunch and kicking everyone out of your home for a day. If you survive the first day prepare for therapy after the next round of tuning and the next attempt at tuning and the next..... Once you get it set just right sit down and enjoy your favorite music or movie with a well earned beverage. Now that you are relaxed and listening intently Satan may sit down on your shoulder and whisper in your ear: "So, Big Guy - Is it really set right?" Yeah it happens....... 😉hahahaha

@rosssmith8481 10 ай бұрын

One problem with this speaker is if you use the the little clip for speaker wire connection. Instead of having the left right spaeker connections negative negative, or positive positive which are right next to each other. They have positive negative for each speaker right next to each other. Which means if the wires touch, the speaker blows. Bad design.

@NeilBlanchard 10 ай бұрын

There is a lot of interesting and good tech in this unit. But the 0-180 degree switch is pretty lame, in my opinion, in an expensive subwoofer. Because the path lengths the sound has to travel from the main speakers to your ears vs the sub to your ears - is going to not be in phase or 180 degrees out of phase. It is going to be somewhere in between those.

@ErinsAudioCorner 10 ай бұрын

Agreed. I’d have liked to see a proper variable phase (all pass) filter.

@xTG14x 10 ай бұрын

I almost bought one of these, but then I remembered that the Rythmik G22 is a thing, and the same price :)

@adamjj85 10 ай бұрын

Lol at Kef's 11hz -3db spec. Looks more like 27hz! That's a big difference, I don't know how companies are allowed to fudge specs like that.

@paulhayes2917 10 ай бұрын

I was thinking the same. I was intrigued by this sub and that claim, but they have not said how they arrived at the figure. Few do - I imagine it's at very low volume with a very optimal room gain. Great review though from Erin and it's convinced me that this is not going to be enough for my needs.

@ACM1000000PT 10 ай бұрын

20hz at 80dB it's at his max capability, right? when it's hitting already a lot of distortion and cannot do more?

@ErinsAudioCorner 10 ай бұрын

The CEA-2010A specifies a threshold for allowable distortion. I’d have to see what distortion order was exceeded to cap it there. I don’t have that readily accessible.

@JoseFerreira-zb7wh 10 ай бұрын

Waiting for you to review some competition. (maybe some cheaper one?) I actually live in an apartment, listen to low/ moderate volume levels and have a medium sized room so this could do the trick, but it's way too expensive for what i can afford. I don't need something to go as low, as i don't want to upset the neighbors, 30Hz would be more than enough but i'm looking for a smaller unit with a linear response to fit my stereo system. I'm also looking into the used market and have seen some bowers & wilkins asw608 and 610 with reasonable pricing. I live in the EU and most good and affordable subwoofer brands are from the us so that makes it even more difficult as those units are more expensive here. Keep up the good work!

@ErinsAudioCorner 10 ай бұрын

I’ve got a few others on hand that are smaller designs you might be interested. Stay tuned.

@JoseFerreira-zb7wh 10 ай бұрын

@@ErinsAudioCorner have you heard of Audio Pro brand? They're a swedish brand and apparently have some subwoofers for reasonable prices (at least here in the EU).

@JoshM7 10 ай бұрын

According to my super scientific calculations. (joking. Just some WinISD tomfoolery guestimates) The woofers were probably moving around 7-8mm for the CEA test. Wonder what the xmax rating is on the drivers. Maybe the xmax rating is around 10-12mm and they limit them to 7-8mm so the cone excursion distortion doesn't get too out of hand? Can only speculate with "on paper" stuff. Real world might be different.

@erkkijaakkopetteri 10 ай бұрын

I don't see the KC62 whitepaper mentioning Xmax, but the BL was tested to only drop to 80% at 15mm of excursion so there's that...

@JoshM7 10 ай бұрын

@@erkkijaakkopetteri oh that's good to know. I think xmax ratings depend on how the manufacturer rate them. But I've seen some rate xmax to 70% BL. 15mm at 80% BL is pretty good. I expected my on paper stuff to be incorrect. But it having 15mm at 80% BL is unexpected.

@chrisbradley9607 10 ай бұрын

Feels like increased roll-off starting as low as 30 Hz is still gonna piss off the neighbors in apartment mode. Oh well :D.

@TonicofSonic 10 ай бұрын

I would love to see you test some car subs as home subs. Reason I say that is I know it only took me a couple hundred bucks on the used market to shake a whole city block as a younger adult. Curious what you would have to say on it with even minimal data.

@tonymolina7744 10 ай бұрын

We like the subs, the subs that go Boom. Thanks Erin!

@Zhiloreznik 10 ай бұрын

If it wasn’t for the expense and R7’s already pissing off the neighbours I’d consider it.

@ErinsAudioCorner 10 ай бұрын

😂😂

@bbfoto7248 10 ай бұрын

@ErinsAudioCorner Good review. 👍 I wonder what DC voltage the internal 120VAC PSU is providing to the amplifier rails? Ummm...either way, throw it in the passenger footwell of the Tesla fed by a spare processed channel off your HELIX DSP Ultra for a little in-car test. 😊

@neiker234 10 ай бұрын

I never know what these reviews mean by "small/medium/large room"

@ErinsAudioCorner 10 ай бұрын

THX has a spec and that’s what I go by: www.thx.com/product/thx-certified-loudspeakers/ Small = Compact

@krupkake1 10 ай бұрын

Should you ignore room sizes when considering a product for near-field listening, like at a computer, or is it still a factor?

@34332 10 ай бұрын

@@krupkake1 Near field configuration can indeed remove a good bit of room influence, but it won't remedy out of control reflections or echoes in an acoustically reflective and reverberant room(size)...which can negate many of the benefits of a near field listening configuration. You still want to ensure that there isn't a high percentage of opposing, parallel and acoustically reflective boundary surface area.

@Nick_2i 10 ай бұрын

@@34332 Why the emphasis on not having opposing, parallel surfaces?

@chinmeysway 10 ай бұрын

Can you test how many dollars this will cost us thanks

@Mishael_Agyei-Boamah 10 ай бұрын

Gimme two RSL Speedwoofer 12s and I'm good but impressive sub nonetheless

@ErinsAudioCorner 10 ай бұрын

I’m trying to get some RSL stuff to test. Mainly interested in their 10.

@neilfox4626 10 ай бұрын

Check out the JL Audio "D" series.

@ErinsAudioCorner 10 ай бұрын

Dominion? I’ve got the d108 here. I posted the CEA-2010A results to my Patreon a few days ago. Video will be out in the next couple weeks.

@neilfox4626 10 ай бұрын

Wish it was the 110 but I can't wait.@@ErinsAudioCorner

@commanderrussels2612 10 ай бұрын

Only thing I don't like is that it doesn't use an external amp. I'm getting tired of plate amps going bad, and they do go bad often.

@johnd5542 10 ай бұрын

The thing with sound, and especially bass, its all subjective, and influenced heavily on prospective. People who dont have bass in their system are easily impressed. Even in my own setup, when I 1st turn it on, bass is thunderous. It got me checking my gains a couple of times. But after 5mins of jamming, the bass blends, seemingly light to my ears. On the flip side, if you have heavy bass in your own system, the lack of bass in a system, is extremely underwhelming.

@TheTrueVoiceOfReason 10 ай бұрын

Dude! Is that a new DD shirt? Current tour? That was 2 weeks ago for me. Last week was Peter Gabriel.

@scottbennett3119 10 ай бұрын

Smaller than a vinyl? The Beatles referred them as records. They had many hit records. But, you knew that.

@SJ-ip3cj 10 ай бұрын

Can I put this in my car?

@spinetingler-007 7 ай бұрын

If your bookshelf speakers lack bass a subwoofer isn't going to help you at all. You need woofers -- not sub woofers. Most people don't understand just how low in the frequency range a subwoofer operates. That's why the return rate on subwoofers is massive. The nation's landfills and dumps are packed with subwoofers and they are all over "for sale" listings.

@ErinsAudioCorner 7 ай бұрын

The typical "subwoofers" most consumers buy are more like midbass modules. So they'd be closer to what you're suggesting. :)

@spinetingler-007 7 ай бұрын

@@ErinsAudioCorner Then I would love to hear a drum solo demonstration thru the KEF subwoofer. I have an Adam Audio subwoofer that only catches the lowest part of the kick drum. I guess I have been using the wrong subwoofers.

@vrusimov 9 ай бұрын

Cute little sub but 11 Hz is just not happening with this thing. They probably shouldn't market it as such. 11 Hz is the land of high x-max 18, 21 and 24 inch drivers when you are talking about sealed subwoofers and SPL that is "usable". In larger rooms this thing might disappoint unless you don't know what you don't know...

@FOH3663 10 ай бұрын

Youre right, physics win out. KEF however, is putting in the work.

@gingernut3411 10 ай бұрын

Erm......no footage of it flexing...😐

@ErinsAudioCorner 10 ай бұрын

What about of me flexing?

@gingernut3411 10 ай бұрын

@@ErinsAudioCorner not you 🫣 the sub. Footage of it running, the drivers pushing some air.....or did I miss that 🤔

@whatfreedom7 10 ай бұрын

$1400?! Oh hell no. I’d be buying a SVS micro 3000 which is 10.9x11.7x10.7 for $899 and have plenty of money left over.

@ErinsAudioCorner 10 ай бұрын

You might be interested in the review of the SVS I posted a couple days ago. kzfaq.info/get/bejne/rsqgZrB_mZmzh6M.htmlsi=Dxu_32J9tmLE5Pel

@user-gf7kj5vj3p Ай бұрын

Kef guy really didnt like it when mentioned erin, then went back to "it plays to 11hz" yeah at what spl and distortion. Silence. lol

@p_mouse8676 10 ай бұрын

1400 or so bucks for this? I have seen 8 inch (and even 10 inch) subs with the same/similar volume (therefor size) selling for A LOT less, performing porbably better. Sorry, I am not impressed for that price at all. Would love to see some Klippel measurements of this btw :) Espeically BL(X) and Kms(X) + distortion.

@ErinsAudioCorner 10 ай бұрын

To be clear, I’m not advocating this is the best solution. But based off my recent testing I don’t know of another subwoofer its size with more LFE. If you can tell me of one then I might try to get it to review. The SVS 3000 Micro’s CEA-2010A results is about 5dB below this subwoofer under 40Hz. The KC62 also rivals the JL Dominion 8 at 20/25Hz and is notably smaller. I can’t think of another subwoofer this size that has better numbers.

@-MarkWinston- 10 ай бұрын

Show me one sub of this size that has this extension. Im waiting.

@Nick_2i 10 ай бұрын

But Erin, it has two 6.5" drivers, thats the same as a 13! (yes, I really have seen companies use that logic when talking about dual driver subs) Really, I just wish Kef would make something similar with dual 10s, but it would probably cost as much as a pair of R11s.

@ErinsAudioCorner 10 ай бұрын

The KF92 might be what you’re looking for. That review is coming soon.

@Dasbeerboots 10 ай бұрын

@@ErinsAudioCornerI have two KF92s in my living room. They're everything I wanted and more. Massive upgrade over my old Klipsch R-115SWs.

@Nick_2i 10 ай бұрын

@@ErinsAudioCornerHonestly, I'm planning on buying 2-4 sb3000s (not micro) in the semi-near future, so I doubt the 92 would be on my short list. I could be wrong, though. I just watch these videos to learn stuff lol I'm really looking forward to the small sub comparison.

@Nick_2i 10 ай бұрын

I just realized the kf92 is dual 9" which is closer to what I said than I realized. I guess I just want them to make a dual 12" now that I think about it

@Dasbeerboots 10 ай бұрын

@@Nick_2i They likely won't do that. The KF92's drivers are borrowed from the Blade One, which has four 9" force-cancelling bass drivers. Those are the largest (force-cancelling) drivers they have commercially available. The Blade Two has four 6.5" force-cancelling bass drivers, hence the KC62. The Reference 8b is their flagship subwoofer, but I believe it uses the same 9" drivers as the KF92 and costs a whopping $7,000. It also has seemingly worse specs than the KF92.

@tpcjames111 10 ай бұрын

This was good one, cool little sub but even in my apartment living room I don't think that sub would the job for me.

@gaborszabo2880 10 ай бұрын

Hi Erin! Can we talk about Frequency Range: Sub-bass 20-60 Hz Felt more than it’s heard and takes high-quality headphones or speakers to reproduce; most instruments struggle to enter this range. Bass 60-250 Hz Determines the overall power of the music, largely emphasized by bass synths, bass guitars, bass drums, or piano. Ander 60 Hz we are in sub-bass territory. If a sub dose 30 Hz / 90+ dB that's not a bad, shallow subwoofer. If it dose 20 Hz or lower at 90+ dB, that's a better subwoofer.

@sammy10001 10 ай бұрын

Imagine if kef made 15 or 18 inch version subwoofers to fit their thx and meta speakers 😳😳

@chinmeysway 10 ай бұрын

Would be neat if the review testing involved more than your huge room by listening in a small and medium or and super huge room.

@Grizzlyorso 10 ай бұрын

Not sure I would even call this a subwoofer. SPL is way too limited considering the needed crest factor with music but especially for movies. Let's also remember the cost of the subwoofer, which is high.

@pedrocols 10 күн бұрын

I do not see the performance to price value on this little toy. You will be better off finding a pair of other much better priced small subs in the used market.

@chinmeysway 10 ай бұрын

Oooohshit 1500 ?!! Dillard’s