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Please rename the yard sale to Z's Sloppy Seconds.

Just want to announce that I set them back up in the living room today after a few weeks without them. Whilst tuning them, "Rain (Female Vocal Version)" from the Cowboy Bebop OST started playing. I haven't cried to that music in a long while. But I did. F

I'd like to think that your cat believes that you're a madman giving a speech to inanimate anime figurines.

I have the Heresy IIIs, and use them as maxi-bookshelves with a sub. They work great. They will go to "death ray" levels if you ask them to, but they are pretty amazing. I find that they portray acoustic percussion in an incredibly realistic way. I run them full range, with the sub coming in to boost up the low frequencies. The sealed version certainly rolls off below 60 hertz, and needs a sub to get the slam we'd want as modern listener.

I have had mine since 1979(grandpa) Always sat on the floor. Look brand new, never had any issues at all. Still sound great. I have a amaha sub woofer and a Yamaha RX-A770 receiver.

Yes they are built-in Hope Arkansas. In the early 70's I was the east coast rep for Klipsch knew Paul Klipsch personally quite a character. If I recall Klipsch Cornerhorns were about 3000 a pair back then. I wish I'd kept mine they were in Rosewood, hell today the wood alone would be 10K.

I predict that when Z hears the Cornwall 4s, the Heresy 4s will be for sale.

Hey Zeos I'm a Patron. I will give you $20 for them.

Welcome to the Klipsch Heritage family. Took you long enough. But at least you arrived.

Originally. the Heresy was intended as a center fill speaker for use with a pair of Klipschorns. As such it was designed for low distortion from the mid-bass up and to let the big folded corner horns do the heavy lifting for the deep bass. The Heresy [I] to III were sealed boxes, acoustic suspension/smallish infinite baffles. The story is that when Paul W. Klipsch was designing this speaker with a direct firing woofer without a bass horn it was heresy, hence the name. Yeah, old dude here.

Great analogies and funny!!! Thank you for enlightening me on these speakers!!! Congrats on your arriving to a level of audio nirvana!!!

This might me be the wackiest/greatest review I have yet seen.. It's like all of Zeos' time testing gear has come full circle.. With the same goal we all have and that is, audio bliss. It seems like, for now, he has found it!!

Perhaps the most insane reviewer On-Line? I love it! :-) Keep up the funny and very informativ vd's & stay safe. Cheers from Denmark :-)

Robinson: They dont need a subwoofer at all Zeos: TWO SUBWOOFERS! THEY NEED MULTIPLE SUBWOOFERS!

you hit the nail on the head I've noticed all the speakers I have owned from klipsch with dual wire post have benefited greatly from removing those cheap jumper clips and bi amping them but hell just removing the clips and replacing them with good wire makes a difference

I own the original Heresy's and I'm well versed in the heritage series from Klipsch. Take the speakers down off the ridiculous pedestals for starters, Next situate the speakers each in a corner and utilize the room dynamics acoustically as Paul Klipsch had originally intended, as with all the heritage series speakers all you need is two separate corners and the wedges you had under them originally trust me on this you will rediscover those speakers.

I own a pair of Klipsch Heresy H 100 speakers from 1975, still the best sound around with my other equipment, no intensions of upgrading or selling the speakers, hope my kids realize what they are))

My boy is growing up 😭 Now he knows.... The team that designed these in Hope Arkansas have captured his soul and La Scala's and Klipschorn's will invade his dreams ......

So when are the KLIPSCH CORNWALL IV showing up for review?

Been following reviews for the Heresy IVs for a while and this is the best review so far. Some reviewers said to match these with a tube amp to temper the brightness; Zeo's better, cheaper solution? DSP. Some reviewers have said it's not the best for modern music but good enough bass, and only excellent for the type of music they prefer; Zeo's solution? Cheap dual/sub. Efficiency discrepancy between horns and woofs at high volumes? Bi-amp w/ DSP and subs. Tells you exactly what you need (or what you don't) for what you want out of these speakers.. even numbers for dsp. All are affordable options too. Great fk'n review.. only criticism is no upside down demo lol. I really need to start saving up for these D:

To answer the question at 30:18, assuming the drivers behave like a linear non-deforming piston (they don't exactly but it's close enough for small excursions), the volume displaced by one is given by: V=(1/4) h pi d^2, where h is the driver excursion distance, and d is the driver diameter. Equating this volume with the volume of a second driver, d_2, that will have an excursion of h_2, we can simplify to: (h_2)/h = (d/(d_2))^2. In other words, the relative displacement of two drivers is equal to the inverse of their relative diameters squared. In the case of a 12-inch vs a 4-inch driver, this means that the 4-inch driver requires 9 times the excursion of the 12-inch driver to achieve the same volume displaced. Obviously, you could plug in any driver diameters to that formula for quick calculations.

Last summer I spent a nice chunk of that time repairing/refurbishing a sansui sp-5500x that I got for pretty cheap. The cross over needed new caps, the woofers needed work before their surrounds were completely gone and the all of the horns were blown. Caps were an easy fix spare the horse glue holding down the old rubicon and the woofer was salvagable even though they used While I was able to find replacement parts for the squawker/tweeter horns I could not find an original replacement part for the super tweeter horn but I found a set of super tweeters that uses the same driver material found in the larger horn and the super tweeter and normal tweeter have matching sound signatures so it worked out far better than I ever anticipated in the end. Anyways I have to agree, there is something to three-ways and large speakers like this. Those drivers simply do not move as much as you expect them to move and having each driver doing less just leads to the whole thing sounding so clean. I can see why klipsch makes these style of speakers still as does JBL in their synthesis line.

Obviously Z's respects vintage technology. I would love to see a review of the Tannoy Turnberry GR's. Patented in 1947. I own both Tannoy and Klipsch.

The Heresy have amazing low end set up correctly, in the corners, on the floor angled up, and with vaulted ceilings, thereby effectively turning the room's floor and walls into extensions of the horns and virtually horn-loading the woofer. Properly harnessed, Heresy bass sounds fast, like a giant electrostatic subwoofer.

this reminds me of my childhood (80s) speaking of vintage my dad had a Marantz receiver with 4 12" Cerwin Vega floor boxes with the orange surrounds, to a kid that was the loudest thing in the world!

Your frequency balance problems when you put them on stands was probably because you put them on stands. That put the horns directly on ear axis, for one, and more importantly, you lost several dB of bass because you were no longer getting floor reinforcement of those frequencies. They're voiced to be on the floor, with all the acoustic effects that has. When you put them up in the air, that's gone.

I loved the neon ice cream sign in the review. I've learned a lot by watching these videos . I've thanked and blamed Zeos tons of times for my jbl 305s , along with the aune x1, and headphones, and the new pair of Jamo c93 for my home theater, and the micca OoO that just make no sense on how such a small speaker makes such a great noise. Enough rambling me! Thank you for educating me on the complicated world of audio!

Just had a home demo for 14 days. Attached various speakers. Everybody pointed towards Heresy. I think heresy could get on with any style of music. Forte III throws rocks at you if fast paced music is played. But in both, instrument separation is phenomenal besides other attributes. It’s hard hard not to fall in love with heresy.

I love how you talk about your different speakers being different flavors of ice cream WHILE AT THE SAME TIME there's a neon ice cream shop sign outside your apartment in the background.

Today is the day I've been looking forward to... Z Heresy IV review! I Love my Klipsch Cornwalls; hope you get a pair to review someday!

“ sprinkles are just banana plugs made of silver compounds” Oh god I laughed:)

The floor reinforces the bass (think of it as a built in corner) and reduce the highs because they're not at ear height beaming at you. I think you created problem three by putting them up in the air.

Enjoyed the review, years ago had the predecessor Heresy and had the dealer remove the floor mounts as well ,placed them at ear level and loved them with my Velodyne 15 inch digital sub.had them set up in a 5.1 config for home theater ,had original RF7 and just replaced them with the RF7 |||'s . I know they're big and heavy but after listening to your rave Heresy review would love to hear your take on the RF7 ||| , bad or good , personally I love the way these sound on music and movies .

Seeing ice cream sign outside and then he says “ different flavors of ice cream “ synchronicity

Brandon Burr It’s nice to see Z reviewing klipsch heritage 👍🏼 a klipsch hereitage line review is incomplete without a tube amp imo though. Tubes and klipsch go hand in hand. Putting my pair of heresy 1’s on stands and in the corners made a huge difference in soundstage and bass in my living room. They were on the floor and against the wall before and they were uninspiring. But even in their new position you can still tell exactly where the low frequency cuts out and there’s just nothing below that point. So unless you’re ok with missing a significant portion of the information in your recordings below the cut off point, you need subs. But if you’re going to add subs, might as well get Cornwall’s. And if you’re putting Cornwall’s in the corners, you might as well get klipschorns. 🤷🏻‍♂️ which is what I ended up doing. Problem is my used klipschorns cost me the same as this new pair of heresy iv’s. Actually less when you factor in the subwoofers and stands. That’s the problem with klipsch. I love klipsch and have for my whole audiophile career. But the vintage heritage line are so robust and last forever. For me it doesn’t justify spending 10x more on a new pair. If you have the space I recommend used Cornwall’s or klipschorns. La scalas and belles run into the same bass problem as the heresies.

21:51 “Sofi needs a ladder” -Deadmau5 ...incase anyone was curious 45:53 what? 🤷🏻‍♂️ “I went to look at the temperature in kelvin for bulls of hue who don’t know”

What’s the final setup you had here? I’m considering getting a pair of these and want to set them up somewhat similarly. Thanks

Hey Zeo you should review the jbl L100 classic speaker.

Zeos .... .... .... . . its the first time ive heard your voice manner in that level tone/excitement/disbelievement ... good for you ! they look fooking great !

What sets you apart from other audio reviewers is that you improvise as your going through the speakers while reviewing... not easy to pull off the way you do... nice work...

Zeos, you could add a diy horn sub to get more closely matched sensitivity, and serious gut punch capabilities. Once you get hooked on horns, all else pales in comparison if you like to rock, and live for visceral impact.

I love the comments about the Klipsch, I'm also an owner of Klipsch, but I would say if you were interested I would get the SL-15 Cerwin Vega, they do not require subwoofers at all, or stands. If I would put these in a price category they are Klipsch La Scala, but even the La Scalas require a subwoofer. I know this because my friend owns a pair. My SL-15s are only $1000 brand new.

Nice seeing beefier more substantial speakers w/ larger drivers. Z this your best review ever, I hope you do a review of the Cornwall's next, wondering if you'll keep them too. ( Steve Guttenberg have those broken in too) This the most complete, best review I've ever seen for the Heresy's, good job Man .

Just wait until you raise them up 2 ½ feet. Much better height imaging. I also tried the extreme toe-in idea and that is better than straight ahead or minimal toe-in, in my opinion...way deeper soundstage and even better detail. I put mine up on end tables and I agree with you - can’t live without them. They bring the music to life, ESPECIALLY vocals. Good Lord, the vocals.

Oh! You know, The Forte had a big Brother: The Chorus 15" sub AND 15" passive radiator.Senisivity 110 db

Look, not bad for 1.4 cubic feet of dynamic sound. Originally in production from 1957, they rock.

I've not heard this setup, but this review makes me want to sell my car. Well done Z!

If there is a driver balance problem, you cannot fix it by normal biamping. You have to have different gain control for each channel. Using a dsp or AV amp is one solution otherwise you have to use separate gain controls or attenuators for each amp.

"While my girlfriend weaves baskets"

What a great review and set up. Not many reviewers out here that do what you do. Thank Z You da Man!

SUCH A CUTE CAT!! Considering these speakers myself or Forte III. Thinking three Heresy IV to use as LCR channels for Home Theater since they low profile but I am considering alot of different floor standers. Too many good ones available right now is a pain in the ass! Appreciate the great reviews! Did I mention you have an awesome cat?

i have a heresy iis and they are amazing!!! vocals and mids are so up front and smooth

This is simultaneously insane and awesome.

i picked up a pair of unfinished heresy 2,s at good will for $12 a piece grills were screwed on lol they have even less base as your new ones but with a sub they are great sanded them and finished them in dark walnut stain now they look and sound great

Who else times videos based on cooking wings?!? God bless Zeos! Stay safe all!

. . . all that is not necessary, my Bra. Utilize a high pass filter between your subs output, and the Heritics, buy it set at 100hz. No freqs below 100 enter the Hereseys . . . the big 12” instrument speaker, then becomes an excellent mid-base/lower-mid driver, with the subs crossing with a 3d order, 18db per octave roll off, doing the down an dirty . . . try it, puts nothing in the signal path . . . you need powered subs, though. Parts Express sells the filters 😊.

Pssh, how could a pair of speakers that they have at Chipotle be any good? /s

Three weeks ago, I received my pandemic speakers, new Cornwall IVs and my sheer joy has been similar to Z's. One of the reasons I chose them was that I could save $1k on the amp. I don't need the subs either. I did raise them up six inches and put them on wheels so that they could be turned depending on the sound stage that I want. 16'x12' room.

Now that you have the DSP set up, let’s see if you can duplicate or better the sound with DIY. Maybe line array with some lite weight drivers

Every time I watch a Z Reviews video and hit blinds are open. I really wonder what people are thinking when they look up and see a guy walking about pointing and yelling at things in a room with GoPro on him.

“Eight watts would kill ya” Lol 😁

Been looking forward to this since I first saw you had them as I have Heresy IIIs, missed 10 minutes of it working out the volume of a cylinder for the 4" driver extension question. It would have to move 54mm FWIW.

Z! I really like the direction you are going with the Heresy! Are you going to install two more crown and two 15" Subs? Klipsch makes them? The Klipsch guys say it's good to listen to them positioned so the horns cross in front of your ears? Did you consider the Cornwall IV? (short for corner wall ) It sure makes a lot of sound without moving, doesn't it?

Their is pair of these in my parents basement, as wedding present in 1964. They look identical, I wonder if the mice has gotten to them? Still in the original box. Wonder if they are worth anything? 55 years old...

When you lusted over the passive radiator on the Forte IIIs I really thought you were going to get a pair. At least now you got these. Thanks for the tip on the finish, I have a Klipsch RF-7 IIs and they do scratch very easily. Front scratched with a German Shepherd paw while sleeping near by.

CONGRATULATIONS! On acquiring the Heresys

Hi my friend love all your videos please can you tell what those round looking crab things are on your window sill are please thank .. and keep the videos coming

The bottom tier is the line of powered speakers. Then and now 😉

Saw this in 2023. Everything is peachy, Past Zeos. Everything is peachy. Nothing is wrong, no problems at all. *sob*

You should definitely try the Solaris with them (in you new home I guess). The Solaris is such a great amp. Loved my Yamaha 3000 combo but in a reasonably sized room or with very efficient speakers the Solaris adds so much to the music that makes you emotional. Try it. Seriously. Trust me 😀

Hi Zeos! Did you also check out the possibility and the upgrade option from GR Research for the crossovers? Very nice video and interesting approach to drive the mid-highs and lows separately. Perhaps one reason more to check out the xo upgrade from Danny 😉

The JBL L100 which is similar in size also really needs to be elevated beyond the shorty stands they offer. Which may be why JBL classifies them as bookshelf speakers instead of floor standers. Anyway, the surround on the Klipsch is made of treated cloth and is known as an accordion surround. It's very commonly used in high efficiency pro sound drivers. The cabinet for these is now and always has been undersized for a twelve inch driver to produce truly deep bass. But it is not strictly a mid-bass driver as it will play well down into the 50 hertz range which is most certainly in the bass frequencies. However, in an elevated situation such as this you probably will see a dramatic roll off starting around 65 hertz. But as Z said the sound you get in your room will vary. In any event his assessment is accurate. You need a sub. But then to get the best performance from pretty much any speaker that doesn't have multiple large subs built in you need a sub, or two. Yes, really. You think you don't until you try them and then, wow, what a difference. Now, I know a lot of people think bass is the only reason to pay more than sixteen dollars for a speaker and will think these are a rip off. Other folks will fuss about the lack of extension on the Klipsch but then pay five thousand bucks for a pair of bookshelf speakers that roll off below 150 hertz and claim they don't need subs for them. Okay. Truth is these speakers have a lot of competition at three grand. But just as each of these competitors can do something the Klipsch can't. The Klipsch's can do scale, dynamics and realism in a way that I've only heard from one other speaker at the same price point.

That's why the PS audio exchange exist they have kits where you cannot rebalance the speakers where you can bring more bass out of them and cut back on the mid and I by her ex exchanging Parts off of the crossover just by changing certain pieces off of the crossover board you can change the efficiency of the speaker and they do sell kits so you can change them up and you won't have that problem anymore and you won't have to run two amps to one speaker

Saw a video where a designer said higher efficiency ( Klipsch law) reduces distortion and you get more sound from less cone excursion. That’s why that huge cone barely moves when rockin Think of Bruce lee’s three inch punch that sends the guy across the room. The big cone is hitting harder and faster so it doesn’t need a three inch throw... bro

now they have my attention. it took your review to make me even want to return to looking at these. my brother in law had a pair of these in the 80's and i hated them. he ran them with a old school Pioneer 100w/channel receiver that ran them to incredible sound levels but it was nothing but an assault of mid-range that nearly killed me. their clarity was incredible but there was no full-range sound to them. this could get interesting. thanks Zeos...

I was watching another vid about Klipsch and they stated that the Heresy was originally designed to be a center channel speaker to the Klipschorns. That explains why they don't need to go deep. The speakers that need to be looked at are the Fortes as they were designed to be stereo speakers.

Thank you for your review which helped me soo much after recently purchasing the Heresey 4, and was wery disabopinted AFRET REYING THEM for the firest 4 weeks the sound was thin and whed inreasing the volum was getting more thiner, after seeing your goog review, I placed them higher and adjester the speakers sound on my also new Marantz7013, but I still may be thinking about pre amp, and I 'm not sure if I can do that with connecting my old Onkyo656 with the new Marantz 7013? thank you appriciate it.

And I have been using their speakers for years and I have not only been using them I have been modifying their crossovers a years to get better sound out of them and there are kits you can buy to change the capacitors the block resistors and the coils on the crossover boards that'll give you more Bass and more highs and mids I know those particular speakers that you have there

not old, timeless

I bought Heresy III based on Gutenberg's review back then and no regrets. I got them for $1800/pr, seems like bargain. I live in a small place so I don't even have room for a sub or miss one too much, though I'm sure it'd be even better. I'd love to try the H IV

Large woofers are the secret to star spangled awesome sauce! Why? Because beaming my friends! It's actually a good thing for frequencies below 1000khz. And big woofers help a lot to focus frequencies below 500hz. They won't achieve cardioid bass by any means, but they're much better than having 2 five inch woofers. Honestly, MTM designs have never made any sense to me. The center to center distance is never close enough to avoid comb filtering in the mid range (intermodulation distortion), plus they spread too much sound to all the side walls. MTM trades everything for a symmetrical vertical lobing pattern. Smh, It's so bloody stupid. It's a total failure, and I'd be glad if they chuck all D'Appolitos into the sea (not referring to center channels). Use small woofers and too much sound is hitting the side walls and floor and ceiling. It creates a muddied sound and is unclear. Small speaker drivers are best for very large rooms, or heavily treated rooms, because they're able to spread the sound far and wide. Oddly though, they lack the ability to move much air which won't fill a large room. So stacking small drivers in a line array configuration is sometimes good for large rooms. Physics affecting audio is quite peculiar, and the general public is oh so very lost and confused. If you have a small to medium room, a large 10 to 12 inch woofer which doesn't have much excursion is your secret weapon to achieve better clarity and sound staging. Small mid-range drivers are also a poor design choice for most homes. Go with a 6.5 inch (not a 4 inch) and harsh frequencies from 2 to 4khz won't be bouncing all around the room-- depending where you set your crossover point. Cardioid bass is the goal, along with a good directivity index result, especially for most home environments. Here's a good setup for increased sound staging, clarity, and decreased listening fatigue. A 3 way with a subwoofer. One 10 or 12 inch HiFi driver, just like the heresy's. High excursion not required. We want it to be able to play down to 60hz with ease, but below that is the job of the sub woofer! Possibly use 2 eight or nine inch woofers. Then a 6.5 inch mid range. Crossover region ~250 to ~4khz. Yes, moving the crossover point an octave from either of these points would still be fine and understandable. But those are general boundaries. A ~1 inch tweeter. And the sub. I'm not a fan of compression drivers. What's the point? Most people don't listen at high enough volumes to have a driver which typically doesn't measure as well. If going for a 2 way configuration. Consider 2 seven or eight inch drivers, and a ~1 inch tweeter. Focus on HiFi drivers without massive excursion or crazy bass specs. You want mid bass and mid range clarity. The sub can always pick up the low end. The crossover point will be ~2,000. Older speaker designs had a lot going for them and now with the better drivers of today, they've been perfected. Granted, they don't look like slim sexy towers. That's the only drawback.

Between the Heresy's and the Forte III's I'm not sure which I will take, great review as always, now I have to watch the Forte review again. :)

25:14 it's not coincidence but if you see outside left window you'll see ice cream shop 😂and im pretty sure zeos read that and made the whole ice cream analogy 😂😂

Finish may just be sanding sealer without a true hard finish coat on top. That's a cost saving thing. Sanding sealer is much easier to buff out than a harder finish.

Good point on the woofers, I think there is some sort of Doppler effect when you try too much bandwidth on drivers. Did you consider mounting the Klipsches on top of the subwoofers?

I love the idea of legacy klipsch dpeakers. BUT everytime i see a review of one or the last time i spent the day at their engineering facility, i want to build new cabinets so that the driver acoustic centers are lined up and adjust the crossovers to take advantage of the increase in coherencey. After spending years designing pro sounds systems using speakers with woofers misaligned with the horns, i learned to digitally time align the drivers. The increase in coherence was revalatory.

Mine sound great from on the floor. The key is to sit far enough away. 12 feet minimum. I'm at 16 feet and it is perfect - no sub needed.

in the 70's and early 80's there were several 12 inch-woofer speakers like that Heresy that were usually placed on 10-15 inches stands and tilted back; i can recall models from Advent, JBL of course, Avid and KLH, to name a few.

As the owner of a set of original Heresys from the 80s I can assure you that the speaker has always been a 3 way.

Oh man I love this video but I gotta know how well can this raised up dual amp approach work with the cheaper end Klipsch speakers. How satisfying can that be for the money?

I still have my original 1981 Klipsch La Scala's and they still Kick A**!!

Have a 1970's pair of Altec Lansing speakers (complete re-build), duel 10" woofers, same design wrinkle paper, turn them up and that mid horn just takes over. What happened to mountain bike, replaced with paintball guns.

Reminds me I need to plug my Forte IIs back in. Still using the Chorus IIs with an Academy center channel.

I'm debating between those and the Ohm's....hmmmm....if you had to keep one pair, which would it be?

Speakers good for Bar & Club music . Drinks at the BARR , perfect

Great review 👍 Just bought a Marantz nr1200 and seriously considering adding these 4's to my room.

Zeos: These are the ultimate "bookshelf speaker" Genelec 1237A: Hold my 12 inch

I am interested in high sensitivity speaker (I have 92db German horns) but these are 99db like the Fort III.for an extra grand but the Cornwall IV is 102 so it's like doubling your power.I'd like to have something that could run off a 1 watt amp (LTA's MZ2).Heresy and Cornwall IV need a sub so I am hoping that maybe the Forte which can be run close to front wall even with that 15" well hoping that they update the Forte from a III to IV and get improvements wrought in the Heresy and Cornwall.I wish you could get a pair of Tekton SET15 which can be run off 1 watt.But this was great review though I have to digest the bia-amp option with its presumed degradation of sound unless you have some very expensive analogue x-over.Great Review Zeos

LMFAO You bought them hahahahaha. I knew you would love them. There is a reason they can still charge what they charge for them. They are fucking awesome speakers....PERIOD. Hope you enjoy them Zeos...Im jealous.