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I added a Heresy III to a pair of Klipshorns. Here is a report after a few days. The Khorns are in good corners on a 25' wall. The room is essentially 15' deep although about half opens another 15 feet into the kitchen. My listening room is living room, dining room and an extension of the kitchen. There was a sweet spot for the horns where music sounds as good as I've ever heard. I've spent many hours sitting there. Unfortunately, most of the time I listen to music while working at the dining table, cooking, washing dishes or sitting on the sofa. Nearly all of my listening was too close to one speaker or the other, or too close to the long wall between them. I added a Heresy III (It will eventually get built into a cabinet and so I don't want the port on the IV). Cory is a gentleman. I am glad I reached out to him. It sounds great! I have it well below the Khorns in volume and so they remain the dominant voice of my system. Off axis listening is much improved in terms of musical content and balance. The sweet spot is now a big oval. On axis (or in the sweet spot) the Heresy is audible and it sounds great. It is super quick. On tracks where the kick drum and bass are in the center the Heresy highlights the percussive quality of the bass and sharpens the impact of the kick. It is not that the Khorns are slow, but the bass is a bit laid back. The Heresy seems a bit more eager. I have it down 5db or so and it doesn't intrude much on the Khorns. Mono recordings also sound great. The Heresy nicely fills a gap in my room and makes music enjoyable nearly anywhere in the space. Sitting too close to one Khorn is now more than tolerable. I feel very fortunate. It also has good WAF (she's surprised at how small it is!) but she also thinks I am in the land of diminishing returns. The technical bits: I run a mono amp from one of the mono sub channels on the preamp - a Parasound P6 (very positively reviewed by me in the SS section) with the low pass filter defeated. There is a volume knob for the "sub" on the face of the preamp and I keep nudging it down. The P6 is connected to a Parasound A23 with balanced interconnects and so the signal is hot. There are input pots on the amp and I've had to seriously attenuate the input to match or slightly exceed in input to the mono driving the Heresy. Judging by the sensitivity of the speakers, I suspect that if I replaced the balanced interconnects with RCA cables (lowering the input level to the amp), the amps would match up better. I made a summing box per Dope from Hope but am not using it here. For critical listening I can take the Heresy out of system with one button if I want. You can see the Heresy in the lower right corner 12' from the left Khorn. Thanks for reading.

For sale single Klipsch Heresy III Black. Used as a center channel. Four months old purchased brand new from an authorized dealer. Asking $700 plus shipping. Unit is in perfect condition. Original box and manual.

Heresy HWO pair for sale by original and only owner. K-22 woofers, K-55v midrange drivers on K-700 horns and K-77 tweeters. Type E crossovers. The cabinets are in nice shape. Not mint, but pretty nice. There is a nick here and there, but pretty good after 40 years. I did apply a coat of slightly darker stain when I bought them in 1979, so darker than stock cabinets. They look nice, though. I've taken care of them. $500.00 Located in Knoxville, TN. Serial numbers: 79T652, 79T653. I have more pictures.

Here are the RTA and Spectrum Analysis Graphs of the measurements resulting from the modifications described in the first post in this thread. Bear in mind that these readings were not taken in an anechoic chamber or outdoors, but in my listening room, well away from the walls.. All horizontal graph lines are 5 dB apart. These graphs have not been edited. These measurements were taken at less than a Watt of drive power. The Dayton Audio UMM 6 measurement mic and REW software were used on a Toshiba Windows 7 laptop computer. At 2.83 Volts of pink noise the result- not shown here- was 101 dB at 3 feet, 100.4 dB at 1 meter. The first two graphs are RTA of pink noise at 3 feet, with 1-octave smoothing on the first graph and with one third octave-smoothing on the second graph. The third graph is spectrum analysis of white noise, with psychoacoustic smoothing. The final graph shows pink noise RTA with one octave smoothing, locating the mic at the listening position. The crossover schematic responsible for these results is included.

I have discovered an easy formula for addressing the two largest problems with the sound of my beloved 1981 Heresy 1.5's (Heresy 1 drivers with the E2 balancing network). The K22-E woofer is not efficient enough to balance the squawker, even with the 9 dB attenuation via the T2A autotransformer. The enclosure contains only 1.6 cubic feet-before subtracting the drivers' and crossover's respective displacements. These limiting factors are familiar to most of you. I have achieved a vast improvement in frequency response, rhythmic drive, listenability and flexibility of room placement by changing-reversibly-only a few things. Bonus: 4dB increase in sensitivity over stock (96 dB/W @ 3 ft) to 100+ dB/W @ 1 m. I sought long and hard a 12" woofer with an efficiency of at least 96 dB/W (2 dB/W more than the Klipsch woofer) that possessed Thiele-Small parameters appropriate for a small, ported enclosure. (Running computer simulations for the Heresy's 1.5 cu.ft.of useable volume, I quickly discovered that physics will limit the extension of unported cabinets to a 3 dB down point (F3) around 70 Hz, regardless of any woofers I can fit.) I found two worthy candidates in the professional sound reinforcement category. The two readily and cheaply available candidates were the Peavey Sheffield Pro 1200+ and the Dayton Audio PA 310-8 12" woofers. My free speaker box calculator app showed that the Dayton woofer ($60 each) yielded the better maximum flat bass amplitude of these two 96 dB/W-candidates. Since I will not damage my one-owner vintage Klipsches (got them brand new in 1982), I bought a half-sheet of 1/2" thick MDF to make a new, port-friendly back panel for the Heresy cabinet and a short length of 3" diameter white PVC pipe along with a 3 1/2" hole saw at the hardware store. I just traced the original back panel and transferred the screw holes onto the MDF. Good measurements and at least a circular saw will give you better results. The box calculator app indicated that a 3" long tube of 3" inside diameter would tune the cabinet to 50 Hz to produce the lowest F3 possible with these woofers: 56.7 Hz. I know that does not seem great, but keep in mind that the simulator app showed the factory woofer's unported F3 at above 70 Hz, plus it was too quiet to balance the squawker and cannot play as loud as the 450 W- capable PA 310-8. You seeing where the "Scale and Gravitas" come in? I installed with hot glue the 3" I.D. by 3"long tubes in the lower outer corners of the MDF panel where the pipe would not foul anything (e.g. wooden cleats) inside the box. Since this new, much beefier woofer has a nominal 8 Ohm impedance instead of the Klipsch woofer's 11 Ohms, I modified the values of L2 and C2 in the Klipsch 'Balancing Network' (crossover) 12 dB/octave woofer low-pass section to achieve the smoothest transition to the squawker. Measurements with pink noise, a calibrated measurement microphone and RTA program led me to a standard second order 600 Hz low pass circuit for 8 Ohms,. That is, I merely changed the original woofer inductor L2 from 4 mH to 3.00 mH ( by unwinding some coils and measuring with an LC meter) and replaced C2, originally 33 muF, to 23.4 muF (a 22muF bipolar 100-Volt electrolytic in parallel with small value poly caps to sum to 23.4 muF). I left the squawker section totally stock, except for replacing the spam can 2 muF squawker capacitor (connected to T2A terminal 5) with a polypropylene Jantzen of the same value. The woofer now smoothly and powerfully balances that magic midrange horn. The speaker can now be placed a couple feet from the wall and still have much better bass than ever. With the Eminence ASD 1001 titanium tweeter driver screwed onto the factory tweeter horn [phase plug removed] with an adapter plate, described in my earlier posts, I measured very flat response from 50 Hz to 19 kHz +/- 2.8 dB ,with 1-octave smoothing; 101 dB SPL at 3 feet with 2.83 V pink noise in a medium sized, carpeted room. The room actually created a modest bass hump to make 40 Hz quite audible ( with the speakers over two feet from the back wall! ). I found that a third order 18 dB/octave high pass circuit at 6 kHz (8 Ohm), without going through the T2A at all, works wonderfully with the ASD 1001 and K52H squawker to prevent that deadly upper midrange hump, combined with the anemic bass, which made the stock Heresy's notorious, especially on denser sonic textures - and right hand piano notes should not honk. Only a narrow 1.5 dB hump at 1.2 kHz and a shallow 1.6 dB depression between 400 and 800 Hz and no spikes anywhere. This is the way I have always wished they had sounded. Bigger, smoother, sweeter.

Pair of Heresy HIP $400 for the pair. I can ship if applicable. Serial numbers 3671, 3672 HIE Crossover with Crites components K-42-EV - to spec K-55-V - to spec K-77-M (both need new diaphragm) All case components are there and intact. Normal signs of wear and use on the wood. Basically, this is a rebuild thats been sitting a couple years and I figure there are others who would enjoy these more than me.

Bought these from another forum member, but project plans have changed. E-2 crossovers recapped with Dayton 1% capacitors. Ready to plug and play. $100. shipped lower 48 states

I think I am going to source a new center channel so I thought I would see if anyone here would like a pair of Heresy II's, signature model for a really good price. The bad, due to being originally shipped by the former owner with only a single layer of bubble wrap, there is some edge damage on both speeakers... the good, the grills are mint. Sonically the are wonderful. I DO NOT want to go thru the hassle of shipping, but if your coming thru Vegas area or are close enough to drive I would let these go for somewhere around $300... Price is negotiable. Picts of damage if there is interest, otherwise I'll just toss them of the pyre.

Hi all, Newbie to the Klipsch board but long time vinyl dj and analog guy :) I need your help. I'm building a home set up for my dj gear (ie. all analog rotary mixer and all turntables), playing disco, 80s, and early & modern electronic music. I've got Heresy IIIs and a sub on my list and I'm having trouble what amp to choose. I wasn't trying to spend "too" much (around $1K and under) but here's what I've narrow down in terms of integrated amps (hoping to connect a few other inputs, maybe a digital input, but sound quality is priority #1) - all of which are around 50w which I'm hoping would power the speakers enough. I know there are much better amps and pre+amp combos, but I'm trying to take it easy for my wife's sake ;) I've read around and on here of people saying more power to the Heresys will drive them to sound better but I'm thinking these should do the trick. Heed Elixer - class A NAD C 368 - hybrid class D Cambridge CXA60/CXA80 - class A/B PS Sprout 100 - class D NAD D3045 V2 - class D Marantz PM7005 - discrete circuitry Peach Tree Decco125 - class D Cheers

klipsch model H (Heresy HWR 12 B )speakers in amazing stock condition. PLEASE SEE you tube video 1961 klipsch heresy's.. SOLD left the klipsch factory on Feb 17 1961 serial # 212 and #213. notes in log books as new style.( no longer has grills on the side) first heresey's. still the exact way they left the factory with K77 horn k55 horn and kk22 woofer. grills in mint condition. cabinets in almost perfect condition I would call them a easy 9 out of 10. crossovers are stock.. these are extremely rare! please try to find any pictures. you tube post. notes. or anything else as you probably won't be able to find anything. I am going to let these go as they are WAY to special of a matching set that I need.. And YES THEY SOUND FANTASTIC! AMAZING! ROOM FILLING VINTAGE audio... any questions I will do my best to answer. this is also listed on the klipsch owners Facebook page. possible patial trade for klipsch stuff ( new heritage heresey's) 70th aniv heresey's.. etc. asking $1800. obo plus shipping from Portland Oregon. more pics available upon request let me know what you think on these amazing speakers.. (SOLD) THANKS again Craig..

Single owner vintage Heresy I HWOs in very good condition. Speakers look and sound great. Not quite “out of the box” perfect but close to it. Serial numbers 8444282 and 84444283. Inspected by Robert Wyatt and tested by Jerry Calhoun. More photos available on request. Make me an offer. In Salem Mass. Prefer local but can ship at cost.

Greetings - recently went through divorce and due to situation need to settle bills and downsize. I am keeping a couple of setups including my Chorus 2's - but a few items I need to part with - would do a package deal and would meet within reasonable distance within New England for forum members. 1. Klipsch Heresy (1) HBR - these have a medium stain I am 2nd owner, there are a couple of smaller chips in veneer which I've taken close ups of. All original drivers and I replaced the crossovers with complete new units from Bob Crites - they sound excellent. Asking $450 2. Rotel RX-1050 Receiver - 2nd owner on this as well - this is 100x2 clean power very solid and hefty unit - all functions as expected the only thing I've never tested or tried is the FM functionality as I don't have the right adapter to connect an antenna and I also rarely listen to radio. I have the original remote and manual no packing for it. Would consider shipping if someone willing to pay packaging cost + shipping cost. Asking $175 3. Rotel RCD-970BX - 2nd owner - this in great functional and cosmetic condition, well regarded and solid unit. THis had an issue with the tray opening/closing and it was sent to Rotel to have the gear wheel replaced which is a common issue on these. Asking $125 4. Project Carbon Debut DC - this is approx 1 year old in near mint condition. I recently replaced the original cartridge with an Ortofon 2M Silver that I purchased from a forum member (which was pulled from a Project TT with just a few hours and he upgraded to a bronze). Added the "Q-up" which is installed currently - have all packing materials, manuals, etc... Asking $325 (Local Sale Possibly pending) Any questions - just ask. I've taken a stab at asking prices based on what I saw with some searches - if I am way off show me and I'll be glad to discuss. Thanks, James

I am new to the HiFi audio scene and have been looking for an amp/preamp combo or integrated amp to replace my old Pioneer VSX-D508 reciever for a 2 channel Klipsch Heresy 1 setup (music only, no movies). I am looking for something under $250 if possible. I have had the Nobsound MS-10D MKII recommended, but have seen very mixed opinions on that, and was wondering if anyone here has had any experience with one. I also am not sure whether to try to go with tube amplifiers or solid state amps. Thanks in advance!

What is the actual overall height of the Heresy on its riser from the floor to top of the highest point??

So is it possible to have Klipsch make a Heresy III that will match my Forte III in distressed oak and lambswool cloth for my center channel??

I recently inherited a set of Heresy 1s from my dad, and am pretty new to the hifi audio scene. I am looking for a solid budget amp to run them (Somewhere in the $200-$350 range). I am currently using an old pioneer reciever and would like an upgrade. Also if there is any other advice for the Heresy 1s that might be good for me to know, I would appreciate it. Thanks in advance.

Hi, all. It has been a while since I have been on our forum. I have a vintage quad system using LaScala’s for front channels and Heresy’s (not sure model, so posted what I saw on back of speakers) from 1989 as rears. They sound great, but today when I was troubleshooting another issue (which was user error in that I had not changed the the input on dbx 200x boxes) I detected a slight buzz in both rear channels when I put my ear to the front of the speakers. Not noticeable with music playing, but troublesome to ponder. I thought it my be my sub from HT system (separate setup), but I unplugged it and still have issue. It is in both speakers, but not in front channels. I do not crank these and the rears are usually less loud than the fronts. Any idea what is going on? Thanks for any help or advice! I like to take care of things, so hope to figure out the issue. I love my klipsches, by the way, so hopefully on this forum people appreciate these speakers and don’t disparage them (it appears not everyone is a fan- too bad for them). My vintage system is comprised of Sansui 9001 receiver, Q8 player, 2 dbx 200x switcher box things, 2 dbx SNRp1’s, and technics demodulator. Thanks again for any insight. Laura

Hello Klipsch wizards! Looking for some insight on a pair of Heresy's that I stumbled on. No joke, these were found in a dumpster and I had no choice but to rescue them. They are in surprisingly decent shape, but after giving them a test drive, there are issues with the woofers. They still sound decent with low volume, but one of the woofers has a bit of a knock/click/rattle when given some extra volume, and the pictures can explain. It's as though the cones in the woofers have sagged? twisted? over time. One worse than the other (the black one). Not to mention, the history tells an interesting story. The two woofers are obviously different, but very similar at the same time, marking wise. One with a raw casing finish and soldered connections, and one with a black finish with obviously newer wiring connections. I want to do this the right way, so the question is: 1. Are these in the category of sending off to be re-coned by the appropriate shop? (I could use some advice on said shop near Indiana) OR 2. Are these in the category of looking into full replacement woofers? Please let me know if additional info is needed, but thank you all in advance for any helpful input! Heresy Photo's -PC

Hello everyone, I got the opportunity to buy two pair of Heresy II speakers after they had been stored for 10 years. I'm most likely the second owner of these speakers and really curious to know how old they are. I did have a look on the serial number guide on this community but couldn't figure it out based upon the numbers that I have. Hoping somebody could give me some assistance. Thanks in advance. Pair #1: P/N 09000351210 S/N 280040 and 280041 W/O 4980 Pair #2: S/N: 293297714 and 293297715 Notes: - Pair #1 has older looking paper serial number notes on the back with some nails. - Pair #2 has coated (paper) woofers

I’ve had this pair of Quartets for a little over two years. They were my first legitimate speaker. Needless to say I was eager to get the most out of them and after replacing the tweeters with the crites titanium tweeters and installing new capacitors in the crossovers, these have served me well! My wife and I moved into a smaller home so these need to find a new home. The cabinets are in good shape, I haven’t done anything to the veneer. There’s one noticeable scratch on top of one cab that was there at the time of purchase. Grill cloths have some slight discoloration on them. Badges are tight and snug. A good warm bath would loosen whatever set into the grills. There is only one factory label left left on the rear of the cab. $525 and they’re yours. These reside in Edmond/Oklahoma City. Id prefer not to ship these. Local pickup only. If it’s not too far we could potentially meet halfway. They are listed on craigslist and Facebook marketplace as well.

Pair of Klipsch Heresy speakers series H-BR (stained by the original owner at some point).Very good condition with one exception - one badge is missing.I have another Klipsch badge and can include it though it looks different (see pictures).Speakers perform flawlessly! Drivers complement: K-22-FE K-55V K-77 SOLD

Klipsch Heresy HWO speakers in working condition. I am the original owner. I purchased them new in 1985 from Hillcrest Hi-Fi in Dallas, Texas. They have consecutive serial numbers. The cabinets are in good condition but have some minor nicks and scratches. One of the speaker appears to have some very slight water staining. The grills and badges are in great shape. The backs have never been opened. The original risers are also included. The speakers rested upon them for a number of years, but they were never screwed on. The speakers have had limited use over the past 15 years. Sales price is $500. Pick up only.

Pair of vintage Heresy speakers, no damage, cabinet used acceptable condition, finish may not be original. Grill covers also unknown to be original. Serial numbers date to 1975. Located in Fort Smith, Arkansas. Local pick-up, or can meet up to 50 miles away. $325

Just acquired a pair of heresy hbr speakers , serial numbers 8410361 & 841062 , does anyone know when they were built ? By the way they sound amazing ! Thanks,Rolf