Which NEXO subwoofer sounds better?

Рет қаралды 51,853

Жыл бұрын

Devin analyzes differences between the NEXO S118 and L18 single 18" subwoofers using the 3Dio binaural microphone for a realistic experience.

Пікірлер: 116

@devinlsheets_alphasound Жыл бұрын

Btw one important thing to remember about this kind of test is that the air noise through the ports is almost always masked by the total sound of the mid and high cabinets in the rest of the system. Very, very rarely are subwoofers like this in a situation where their particular artifactual noises are on display so clearly, with no other sounds in the environment. In a live sound setting, you have the stage volume, the audience, the rest of the PA system, etc. Both of these subwoofers are much "quieter" than most subs in their same category that are capable of producing similar overall SPL levels.

@kowehope7740 Жыл бұрын

What aplication. Software..?🙏

@BMWEiV-Drivingaroundtheworld Жыл бұрын

Port noise might be masked when tops are working but that is quite a noise there. I dont think i have heard any subwoofers with so much port noise.

@Solmbarnes Жыл бұрын

I doubt it very much, the port noise is ever noticeable in real world use. And wouldn't worry me. ----- Towards the end of the video, you are playing a single cycle at high level, I suspect that ringing is the cone acting like a spring and generating a voltage as the voice coil moves through the magnet gap. Would be interested to see this test done with other speaker amplifier combos. Also would be interested to see a version of this test where there is a constant low level sine wave played with a momentary peak. I am wondering if the amplifier would be more able to control the driver in this scenario.

@martingajta Жыл бұрын

Some of the most informational videos on YT . Can You explain, how did you attenuate signal from amplifier to your scope?

@Langeloudspeakers Жыл бұрын

The increased protection at the probable tuning frequency (36Hz) is likely due to the diminished cone excursion thus low heat exchange. Other segments of the frequency spectrum allow a greater cone excursion, enhancing cooling of the voice coil. Low-frequency drivers depend on cone excursion to control temperature for their voice coils. In ported cabinets, the tuning frequency represents the point of maximum system efficiency and minimal cone excursion. Great video indeed, thanks for posting it.

@lunam7249 2 ай бұрын

❤👏👏👏😳❤️ an engineer who knows his stuff

@CrashPCcz 10 күн бұрын

Almost. I am afraid that port tuning frequency is not the one most efficient. The general point still holds though.

@RUGBYmusic Жыл бұрын

I’m sure your neighbors appreciate the experimentation! Haha thanks for posting very interesting.

@douglasallen534 Жыл бұрын

In general, you can put the microphone on the ground when measuring subwoofers like this. On a sheet of plywood as an example. There will be a ground bounce cancelation node in relation to the distance from the mic is to the ground. The mic looks close enough so it may be out of the band pass of the test, but it is hard to say for sure. One other thing to consider. When subs are that close together sub-A may make the woofer in sub-B move in and out and cause the cabinet to resonate at its port tuning. So, some of the "hangover" you were seeing may be coming from the other box putting out sound and the mic hearing it. Measure one sub then move it away or put it face down next time so the 2 don't affect each other when measuring.

@devinlsheets_alphasound Жыл бұрын

Very very thoughtful response, excellent observations. I didn’t mention this in the video, but I did run these tests to see if those were causing problems and it did not really make any difference that was noticeable. Specifically, I wanted to see if moving the mic to the ground would change the frequency response around 70 and 80 Hz, but it did not. And I did move the other subwoofer about 6 feet away in my preparation for the video to see if that had an effect on things, but it did not seem to. There’s a handful of other things I also tried but didn’t mention, things like different cable thicknesses and lengths, I even tried making my own EQ in logic using different EQ plug-ins that roughly matched the Nexo processing to see if it’s a noticeable difference… Maybe all of this calls for a follow up video!

@devinlsheets_alphasound Жыл бұрын

Also, for anybody wondering about how the math works out, the wave length of 80 Hz is 14 feet, which means there would need to be at least about a 4 foot discrepancy between the direct sound and the floor bounce sound for there to even begin to be a noticeable difference in the measurement. With the measurement microphone about 3 feet away and elevated by about 1 foot or so, the floor bounce offset is about 1 foot, if that. Given this set up, significant floor bounce problems don’t arise until above about 150 Hz I noticed, which is outside of the operating range of the subwoofer. The reason why I chose to leave the mic in the air was more for visual purposes, given that there didn’t seem to be any acoustic problems.

@douglasallen534 Жыл бұрын

@@devinlsheets_alphasound One of the reason's, I mention this as I wasn't sure how you were going from sub to the other. Each on an amp channel or plugging/unplugging each speaker at a single amp channel or for that matter if the subs are self-powered. (I've never used these subs so not sure) I've seen lots of people unplug from one unpowered sub and plug into the next one. That is where issues show up more often. If both subs are plugged into a stereo amp the dampening factor and idle current will often hold the cone in place better than it not being controlled at all. If that is not available sometimes a person can short the inputs on a passive speaker and again it will help hold the speaker woofer not being tested in place. I always just move the speaker(s) not being tested out of the way to take any chance of that happening. Take as many variables out as possible. In a speaker's TS specs, one may have a cone with stiff suspension in one manufacture's sub and not in another. Just something to think about. Good response.

@douglasallen534 Жыл бұрын

@@devinlsheets_alphasound I couldn't tell how high the mic was above the ground on my phone. That is why I mentioned "The mic looks close enough so it may be out of the band pass of the test, but it is hard to say for sure." Of course, 1/4 wavelength (3.5 feet) would possibly give you boundary cancelation at 80hz. It is just one of those things again to take out of the equation to keep things as accurate as possible. You did a great job with the video. I'll be sure to take a look at your other videos.

@devinlsheets_alphasound Жыл бұрын

@@douglasallen534 also a super helpful thing to point out! Yes, in this test the subs were always plugged in so the damping factor would at least help keep the drivers stiff, although the air inside of the ports and cabinet itself can resonate and potentially alter the response of the other sub while it is being tested.

@alexanderkesselring3621 Жыл бұрын

with studio Headset the s118 fells more accurat but has more disturbance through the ports, while the l118 sounds duller and a little muddy, but also the volume fells lower. is their maybe a heavier moving mass?

@ladjkaoz Жыл бұрын

absurt how some other channels that all they do is play tracks and read the specs get 100,000s views and this channel that gives true data only gets a few 1000s. Great video.👍😉👍👏👏👏👏

@devinlsheets_alphasound Жыл бұрын

KZfaq. HEY, KZfaq. ARE YOU LISTENING??? lol thanks for the kind words

@StormbreakerYT 10 ай бұрын

The Reason for the sustain in the frequency cycle is due to the eq applied . To make sure that there is no phase shifting , they use linear phase on the eq . Non Linear Phase Eqs change the phase of a frequency wich could cause trouble when setting subs up . Linear Phase Eqs need some delay and pre ringing on order to reproduce the sine wave phase accurately.

@CABohol Жыл бұрын

Nice! Can you make a teardown comparison for this to boxes.

@yashvirmahdoo1587 Жыл бұрын

Nice video, I really enjoy watching

@redking7051 Жыл бұрын

The resonance we can see in the impultion test is coming from the fact that the speaker act like a capacitor. Since the membrane can easily be modelised into a spring, the movement continue even with no power. And since a speaker is basically a mic, it feed back the amp with this voltage. That's why inside every amp, there is a boucherot filter at the output. But my theory can be wrong if the graph Signal is before rather than after the amp.

@bekkerthesokuangeldragon68 8 ай бұрын

What is the software you are using in these speakers testing videos and demonstration videos? I wanna try them out on my subwoofers/speakers/monitors! ( i don't wanna pay for the softwares )

@DJSvadbe 4 ай бұрын

Thanx for the great video! :)

@_Wake_Up_If_U_Can 3 ай бұрын

Interesting video. Writing this comment three minutes into the video. These 18" woofer cabinets by Nexo must be for Pro Audio concert type applications due to the drop off below 40hz. When I build subwoofer boxes I prefer to use drivers and cabinet alignments that hit as low as possible. Currently have (3) 4.6cu foot boxes tuned to 21hz with 12" drivers. (2) of the 4.6cu foot boxes have Infinity Reference 12" 1262W. (1) of the 4.6cu foot boxes has an Alpine Type R 12". All (3) boxes are -3db at 19hz. The Alpine puts out a few dbs more across the band then the Infinity References. The Infinities were only $60 when I bought them like 9 years ago. The Alpine type R was almost $300 and has triple the power handling. I have a Crown XLS2000 with a Rolls Pro Match MB15B off the LFE out from our Costco Denon receiver driving (1) Infinity 12" and (1) Alpine type R in our main home theater. Upstairs I have (1) Infinity 12" on a Crown XLS1002 with a Rolls Pro Match MB15B off a Sony DH790. Regardless, vides like this are fun to watch. I am curious by that spl curve though. It appears to roll off well above any home theater sub application. I am guessing this must be a Pro audio woofer setup.

@DobixIdealSound Жыл бұрын

L18 for the win. Clearly an upgrade. When you got 8-12 pcs of each in an outdoor scenario, the difference will be pretty big in the favour of L18. But I dont like the rattling noises and cracks coming from the Nexo subs. Same issue with RCF subs. A lot of mud in the bass. But they are nice subs overall ✌️

@devinlsheets_alphasound Жыл бұрын

We tried putting felt and other fluffy stuff inside of the S118 port and it actually reduced the air noise quite a bit! It’s not exactly a “rugged” solution though, would get dirty over time and collect dust and other junk, and then might actually make strange noises because of that! And then also, difficult to clean, whereas hard smooth plastic or wood is much easier to clean. The L18 has relatively little air noise compared to many other subs we’ve used through the years because of how large the ports are, they’re almost like horns rather than ports.

@TylerMarletteNY 6 ай бұрын

I noticed the noises with my RCF 9006’s, surprising, because my Srx828sp’s don’t do that and also hold about 75% of the output and quality of the RCF at like 30% of the cost

@xtreme8935 3 ай бұрын

Can you do a L20 vs S118 in the new 4x4 mk II amp?

@gurudattabeura6738 Жыл бұрын

What is the RMS Power In New Model L18 Subwoofer?

@34Kuro Жыл бұрын

By any chance, was that some part of the space cowboy bassline? 😊

@stefsmits442 Жыл бұрын

Interesting comparison would be both at low volume and high volume to see how port compression has an affect on the response. Besides that due to compression, change in tuning frequency.

@nickylarsen6207 Жыл бұрын

thanks for the great job !

@olekristianrannekleiv762 7 ай бұрын

The compression/pumping at 30 hz (17:38 in the video) is likely because you play a tone below the tuning frequency, the cone excusion will naturally be higher here as the pressure inside en enclosure on the lower tuned chamber, escapes through the port. My guess is that this protection does not kick in as much during normal music due to all the energy above tuning frequency using most of the amplifiers power's output, leaving less watt for output far below tuning like 30hz. The reason volume reduction don't kick in at 50hz+ is probably because the subwoofer driver is slightly oversized for the ports output potential, so cone excusion is not an issue above lower chamber tuning. For the L18, the distortion might be greater due to a higher tuning of the lower chamber? A few hz higher tuning is all it takes. Thank you for this informative video. It is nice to take a look "under the hood" of some high end subwoofers. Do you have any thought on what the upper chamber is tuned to on these designs?

@joeden68 9 ай бұрын

The differences between electrical an acoustical response simply comes from the fact that the loudspeaker itself is a bandpass = combination of highpass and lowpass (filter), so it adds its own phase and frequency responses to the electrical response of the amp signal! This is all about filter theory, does not matter whether the filters are of electrical or acoustical/mechanical source, they simply sum up…

@popalock85 Жыл бұрын

Would it be possible to list the equipment and software you are using for your measurements? Thanks, Mate.

@devinlsheets_alphasound Жыл бұрын

It's the Nexo S118 and L18 subwoofers, with an NXamp4x4mkii with the S118 in omni bridge mode and the L18 in omni unbridged mode, both with 120Hz crossover setting. The binaural mic is the 3Dio FS Pro II, and the test mics are the DBX RTA-M with a phase inversion added in Logic. I used a Yamaha Rio1608-D for the preamps, and everything after that was over the Dante digital network. My analyzer is Signal Scope X with the pro subscription.

@laszloturi9633 Жыл бұрын

@@devinlsheets_alphasound Hi! I have the same measurement mic, i read that i have to invert the phase, is that true, and also anythink else to know about this mic?

@devinlsheets_alphasound Жыл бұрын

@@laszloturi9633 Some RTA microphones are polarity reversed to where a positive air pressure wave produces positive voltage on pin 3, not pin 2. I would have to speak with the manufacturer about why this is, not totally sure. Maybe someone reading this can help explain.

@lunam7249 2 ай бұрын

@@devinlsheets_alphasoundits very complicated phase shift mathematics, in general low freq. spl db mic will read positve displacement when blown into.....however when a speaker plays low frequency its out of phase almost 180 degrees, so to make it more common sense, to wire usually the polarity of low freq. kics is reversed, that way positve sound pressure wave makes a positive electric signal to the amps🤔🌝🌝22:05 phase shifting is really complicated

@StormbreakerYT 10 ай бұрын

Can you guys test a rotary sub against a regular sub ?

@sndr7957 11 ай бұрын

Would the nexo p12 or p15 be an upgrade from l-acoustics 12xt?

@bebestefanescu8620 10 ай бұрын

more spl from Nexo but, they sound similar.... you must listen and choose

@sebbo1225 Жыл бұрын

The voltage which you saw after the single burst should be the induction from the transducer when it moves.

@indopleaser 9 ай бұрын

Had no idea that modern equipment has advanced protection circuits. Wow that really protects

@TheRealJohnHooper Ай бұрын

The left subwoofer has more rattling.. Is there something moving inside the sub?

@CrashPCcz 8 ай бұрын

Nice comparison. It seems the old one struggles with less real sensitivity at 36Hz, with amp pushing like +7dB into an impedance minimum. That is a log of heat in the excursion minimum. Not that I do better, but that's why I like the speaker cone do the job with large displacement 21" even in small volume tuned lower, so the port only serves as ventilation and cone movement protection, while riding the impedance peak. Gonna stick to that.

@Ollieman_ Жыл бұрын

what would you think about the way reggae sound system's preamps (crossovers) divide sub and bass in their 5 way structure: - SUB : 28 Hz - 75 Hz - BASS : 75 Hz -190 Hz - MID : 190 Hz - 2,2KHz - HORN :2,2 KHz - 8 KHz - TWEETERS : 8 KHz - 20 KHz do you think it would help high end speakers like bass boss'quad 21' kraken (plugged just for subs) and nexo's 18' subwoofers (plugged just for bass) deliver more consistent output?

@TimpBizkit Жыл бұрын

A band pass sub will roll off way before 190 Hz. 75 - 190 sounds like a job for a PA top with a 15 (or one of those short horn kick bins). I do like not burdening the mid with kick though.

@Ollieman_ Жыл бұрын

@@TimpBizkit thats the thing, freeing the 15" of all the bass frequencies. At the same time Sub bass' 21" drivers are free to push more air while 18" can define bass melodies and kick with less distortion.

@TimpBizkit Жыл бұрын

@@Ollieman_ whilst my current system has crossovers at 95 and 1.2k, I am a big fan of a dedicated driver for the 450-4500 range (perhaps a horn loaded paper cone closed back mid with a phase plug), then a smaller tweeter can play from 4500 up and a larger woofer can play from the 80s to 450.

@peniku8 9 ай бұрын

@@TimpBizkit The DCX464 is a coax mid&hf driver whose mid range compression driver can go from ~400hz-3500hz and then crosses over to the hf compression driver above that. Soft dome tweeters have no place in PA imo, if that's what you're referencing with your use of that word. Having a many-way system is cool for low intermodulation distortion, but it require significant integration work to make it all play together nicely. I'm personally not a fan of running a driver over just a single octave, except for subs, because you really need the headroom for those frequencies.

@TimpBizkit 9 ай бұрын

@@peniku8 I'm not thinking so much a dome tweeter but more a smaller horn/bullet tweeter - for example: The Eminence APT80 tweeters that go loud enough for PA, or perhaps home stereo on steroids, but don't do much below about 3000 Hz. The cone driver would be the Eminence LA6CBMR or similar, which can be loaded on a horn for louder midrange and more authority in the lower mids, but you lose some top end if you're crossing it high, whereas using it as a direct radiator, there is some actual tweeter range treble - at least as good as a boom box speaker, and certainly enough highs for bass guitar.

@jonathanpage6813 Жыл бұрын

Is all the rattling only coming from just air in the port? It sounds like the cars with subs that drive by with their license plates about to fall off.

@devinlsheets_alphasound Жыл бұрын

what device are you listening on?

@AleZava Жыл бұрын

I hear the diference but don't know wich is better. The S118 feels more good for me (I'm using a Velodyne cht-10r for listening). Sounds like the L18 is more controlled?. At 7:18 the L18 has much more power & punch the grass moves a lot! :-o

@1toonhead Жыл бұрын

I would love to see a comparison to a old unprocessed W bin or J bin vers one of the new Nexo L18. I've very corious of old school vs new.

@richbrown5852 Жыл бұрын

Maybe an f2b or w36 also, though of course measurements and figures don't necessarily translate to psychoaccoustics or performance results with regards to throw..

@pacosoundaruba 4 ай бұрын

You will be disappointed with the old school cabinets....

@1toonhead 4 ай бұрын

@@pacosoundaruba I think you forgot what a good horn system sounds like. I have been lucky enough to compare my old rig to a D&B rig. My old W bins with 1000 watt drivers loaded walked all over D&B B2 subs. If it was period correct then yer the Alfa system or D&B System will walk all over it.

@bingdong8571 Жыл бұрын

I listened with my iphone and these suck! Anyway, what do u think about using these in ht?

@devinlsheets_alphasound Жыл бұрын

HAHA excellent.

@arcorner1811 Жыл бұрын

how about using a horn model box

@sndr7957 Жыл бұрын

How do these compare to the l-acoustics sb18?

@devinlsheets_alphasound Жыл бұрын

Send me one and we’ll find out together

@sndr7957 Жыл бұрын

@@devinlsheets_alphasound Unfortunately I don't have one myself, but I'm very curious how they perform compared to the nexo subs. Thanks for the fun educational videos!

@andrialmsfj5965 Жыл бұрын

i prefer the s118 because of the protection but for the bass quality i prefer the l18 it sounds deeper for me on my airpods max listening to my windows pc but it looks like the l18 has a hard punch vent and i don't really like that, i have a FBT Q118SA not the same but really nice

@TimpBizkit Жыл бұрын

The level on that left sub seems to drop at least 6dB with protection. At least it stops the DJs blowing them up I suppose.

@BMWEiV-Drivingaroundtheworld Жыл бұрын

It would be good to see how they do without processing.

@devinlsheets_alphasound Жыл бұрын

yeah we wonder this too of course, but we never run any Nexo products above a very mild signal level without processing unless we are sure we have no future need for them anymore, which rarely happens. We have this old pair of PS15B cabinets that I do sometimes use for more aggressive tests without processing because we don't use them for shows and probably won't ever sell them to anyone lol. I also have a super old replacement driver for CD18 that I use to test things.

@andersonrodrigosantos8219 Жыл бұрын

name of the first song please

@mlnxy6776 Жыл бұрын

Meshell Ndegeocello- Mary Magdalene

@dongwarrenmusic 7 ай бұрын

i wish you can tear it down and share the entire internal layout, LA18, so we can make one, with plywood. haha. wow, 7:50 look at the grass! It is a powered sub. swap the built in amp of the S118 to L18 for safety. i guess S118 is the earlier model while the L18 is the later and redesigned the built in power amp with it hence "powered" sub.

@indopleaser 9 ай бұрын

Alot of really intelligent comments on this video

@stevenwolfie Жыл бұрын

l18 has has more low sub bass s1 has more mid high bass. the output on l18 is louder sounding to the ear... more rich smooth. if i had to pick one for a set up it would be l18 for the fact of it seems like it can be a power house of a woofer

@peniku8 9 ай бұрын

2:50 Your port from the bass reflex chamber doesn't meaningfully contribute to the total system response at 100Hz and what you're measuring with that mic includes spill from the bandpass slot(?). The phase plots diverging is not a criterium for the usable bandwidth of the subwoofer. That's much more a question of distortion and directivity.

@TheRealJohnHooper Ай бұрын

The left one is a bit louder, but the right one sounds deeper and smoother..

@cmartin0011 3 ай бұрын

all i got car stereo to match this up to. alternators wiring battery/caps amps subs. if out put from the deck is good. then you can to some conclusion there is something else going on. in my opinion amps and subs. given power from the wall is good and the wire is capable.

@TheRealJohnHooper Ай бұрын

I would pick the right one..

@precisiondrive Жыл бұрын

S118 sounds more windy noisy from the port, L18 is much quiter, I guess the noise is from the grille.

@MUFFINWRATH Жыл бұрын

These subs are weak! (Tested from my Nokia 7650)

@devinlsheets_alphasound Жыл бұрын

PERFECT

@devinlsheets_alphasound Жыл бұрын

Maybe we should do a video about how much 30Hz we can get out of a flip phone, and how many flip phones it would take to equal one Nexo subwoofer.

@getitcaptured Жыл бұрын

😂

@pearldrumsets Жыл бұрын

Please do it

@ctian6859 Жыл бұрын

Weak because your set up is wrong

@alexanderescalantemamani140 4 ай бұрын

Exelente prueba pero xfabor traducelo en español latinoamericana.. Para enterderte mejor ya 😃

@Herrolas 4 ай бұрын

Wouldn't it be a real comparison by switching off the EQs? Low and high cut is necessary, of course, but the EQ kind of faking it... with a DSP you get Sound out of any single transducer box.

@diegoalonso225 Жыл бұрын

L18 moves more grass. We have a winner!😂

@devinlsheets_alphasound Жыл бұрын

See, this should be the new standard.

@crazyprayingmantis5596 Жыл бұрын

The chuffing of both makes them unlistenable, they both sound like they're underwater

@gaffle-411 Жыл бұрын

BassBoss SSP118 FTW…

@69_MK Жыл бұрын

get outta here

@gaffle-411 Жыл бұрын

@@69_MK 👈 can’t afford them. I fully understand.

@pacosoundaruba Жыл бұрын

Both cabinets have the same driver model

@DarkTrapStudio Жыл бұрын

What is this nasty resonance ? Is this the cabinet or the speaker itself or both ?

@DarkTrapStudio Жыл бұрын

Sorry I don't have experience with these live type subs Im really pointless on theses resonnances also Have you tried the Kali WS12 ?

@vercaveverca1715 11 ай бұрын

Super subwoofer sound !!!

@darrylduck6356 Жыл бұрын

The pre- ringing and most of the post ringing is the cheap processing amplifier. This is specifically caused by the look ahead filters used to roll off the lower end and the top end. Nothing to do with being ported or not.

@devinlsheets_alphasound Жыл бұрын

I was also thinking it might be the filters, but did you notice how there’s also a lot of ringing even when the amp was set to flat with no processing? What do you make of that?

@timmetjuh070 Жыл бұрын

@@devinlsheets_alphasound I guess it has something to do with the damping factor of the amp. And of course how ''thight'' the woofer suspension is? (FS)

@amgineacoustic 7 ай бұрын

Both sound pretty renk

@Herrolas Жыл бұрын

Cant help myself, every bandpass subwoofer i know sounds bad on the transients. I used the S118 and hated it, though we hear it just on YT, it really almost sounds like it does in real, just mumbling and bad! And the EQ curve dont even makes we wonder why, adding 6db at 35hz, ridiculous or more other words i wont use right now, just faking deep sound. I stay with it, i dont like bandpass, dispay on one-tone-infra-subs. Every bandpass horn sounds more precisely and the both boxtypes are not that far away from echt other.