My Heresy IV at 168 hours w/ a change of tubes.


Wow, what speakers.

We've all seen the gushing reviews from Steve Huff and others on youtube and the forums. It seems today everything is given 5 A+'s in the reviewisphere these days even though  90% of what is reviewed s not even adaquit. Reading and viewing these over the top reviews about The Heresy IV's, I was skeptical, but the ridiculous replies rebuking these reviews by people that obviously had neither experience nor interest in the Heresy IV's made me say, hmmmmmm.

After two years in consideration I pulled the trigger. I purchased the Heresey IV'sfrom HiFi Heaven in Greenbay for $2,500 with free one day shipping. I turn my system on and let it running for 5 days straight. The speakers sounded quite nice but it was missing a soul. I was disappointed and thinking of the possibility of returning them, then I read the review on Stereonet. The reviewer described what I was hearing and had a solution. He switched from a 200 watt amp which I believe ran KT88"s to an e34 amp. He described the relationship between the amp and the speakers as being a meeting of soulmates and spoiler, this is what happened to me.

 

I am a Quicksilver guy. Ive been sucking on the Quicksilver tit since something like 1995 or so.....I think. For the last 10 years Ive been running MidMono's with......KT88's even though they were built with e34's in mind. I needed the juice for the speakers Ive been using for years. These speakers were Boston Acoustic Lynnfield Project VR950's. The 950's are either ignored or pooh poohed by many, but they are some very detailed lively speakers. During my years with the Bostons I had several extended demo sessions with other much more expensive speakers and although they were better certainly, they were not change my life better, surely not worth the high costs associated with the upgrades, so I kept the Bostons. The Bostons can be quite deep soundstage and sideways they can through percussion into the next room. The I believe the caps started to go bad and the voices within the soundstage started to wander; this is why I started looking for replacements.

So, Im using MidMonos, a Quicksilver 12AT7 preamp, a PSAudio DirectStream Sr., and 2012 Mac Mini as a NaAS and a HSU Sub used very sparingly. Again with the 88"s the Heresy IV's sounded, not bad but sterile and many pieces sounded like the had been taken apart and rearranged in wonky fashion, very odd indeed. The bass was generally not mushy, but undecided. The midrange could easily get cluttered. There was nothing to celebrate and started to miss the Bostons.

Pieces I loved and knew intimately were disassembled. Things like Peo Alfonsi's Amada or Alma, or Pietropaoli's Le Notte, Likewise, etc. Virtually everything in DSD. Bass-line segments would all of a sudden be pushed into the background in mid phrase and a guitar would jump out front a third louder that it should have been. I tried to tame this with my sub and speaker position to no affect. It was very weird. Even if other pieces sounded fine, they still lacked soul. The kind of soul that makes you smile uncontrollably. The sound was, wide yes, but not enveloping, it was like looking at a photograph taped to the wall. A nice pho, but not reality. The depth was only to the wall....all around disappointing. It reminded me of what almost every positive reviewer had said, "the speak is Fun." and it was, but I thought, I don't want Fun, I want it to sound like it's the most important thing in my life.

I was in a quandary. I thought maybe it is just break-in. I sold a beloved VPI Classic to fund my Direct Stream Sr. which sounded like absolute crap until after like 800 hours running 24hours a day, maybe 1,000 hours, I can't remember and then all of a sudden KA....BOOOOOM !!! Magic. The final software update, I believe is Windom is unbelievably great. I think they started with this software and purposely lessened the initial dozen or so versions so they could upgrade the DS Sr. in increments for several years, but I am a cynic. Anyway,  I figured the problem with the Heresy's was a burn-in issue so I would wait, but then again if I waited for the full 500 hours I would miss my return deadline........ 

Then I read the review by Rafael Todes

https://www.stereonet.com/reviews/klipsch-heresy-iv-floorstanding-loudspeaker-review 

I'm sure I'd read it before, maybe many times, but what he said didn't gel with me until I experienced his issues myself.

"I also found that changing my power amplifiers lessened the effect. I substituted another valve amplifier in my collection – a restored Marantz 8B running EL34s, and dating from 1962. This was one of the finest amplifiers of this period and would have been a regular partner for Klipsch loudspeakers back in the day. What a combination! Those sweet little EL34 power valves brought more air to the proceedings than the KT88s of the VAC, and I heard an energy and life to the recording that jumped right out at me. I’ve never heard the Marantz sound so good; it was as if it had found its life partner. The rhythmic tension was excellent, as it delivered fast and accurate transients with toe-tapping drive."

 

So I looked for my original Quicksilver e34's which I hadn't seen in a decade and most likely never will. I couldn't find them so I ordered a set of e34L's from Tube Depot three days ago. They came today. I figured another 24 hours to burn these in then I would start making the decision to return the Heresy's or not.

I knew they were arriving today so I turned the system off allowing the 88's to  cool. The tubes came and I plugged them in and started Alma by Alfonsi and.......

B.O.O.M. !!!! Immediately... Glorious beautiful gorgeous enveloping soulful sound covered me and every cubic micron of my room exploded in perfect sound. It was like getting punched in the face with joy and contentment. It was a revelation. Now I know what Steve Huff and Tode were on about.

 

Apparently it's not all recordings LOL, as Im writing this, Amada ended and Audirvana cued a FLAC of Al Demeola by random and it sounded like crap, so be warned. You can't have any weak links in the system. Keep in mind Amada was my reference.

 

What's all this mean?

It means these speakers are exactly what Steve Huff said they are. If you try them out and they don't change your life, there is something wrong with your system, not the speakers. If you're using SS, use a low watt tube rig and if you can, DSD.

 

T

128x128tonydennison

@tonydennison "@decooney TCTubes, awesome. Maybe my first step will be trying some NOS 12AT7, who knows?"

Yep. My local tech friend is a 50+ year retired tech for McIntosh warranty service, did Yamaha and Nakamichi service for years too, builds his own custom AudioNote Frankenstein kit amps, etc. He loaned me a massive collection of tubes once to try in 12xxx tubes, showed me some things about "tubes". While some use Brent Jesse and VintageTube service, this colleague regularly referred me to the couple who runs TC Tubes, he likes them, I’ve used them a few times - always had good luck there with them too. Check inventory there periodically, not always in stock.

Since they are local to you near MPLS, it’s always great to have local support. Yep, worth rolling a few. I’ve tried 25 different pairs of them, in vintage NOS. Still have a few pairs, not even sure why I keep them. Some nice new-production stuff now. 

A little secret, ended up going with new-production PSVANE 12au7 and 12AT7s in my amps, and they’ve held their own against my very best 1965 Blackburn plant curve tracer matched Mullard tubes from Brent Jesse. Those are stored. I think you can get a little more out of your QS Linestage preamp first before diving any further into the deep end of the pool. Worth trying this first. Good Luck.

@decooney 

Speaking of matched....

I was looking on the TCTubes site and I was thinking, well, they're not matched so how big of a deal is it?

I have 3 matched KT88 gold lions, the forth broke years ago. What would happen if I rolled the dice on a single gold lion without knowing the matching and plugged it into a midmono?.......more curious than anything.

Or I may send one to Tube Depot to get a match and then sell the set of four on audiogon.

 

Also something I did that I think may have improved the H4's, but most likely just in my head.

I removed the steel jumpers and made some out of bare copper solid core. if anyone hasn't thought of it.  Then again, on the inside of the terminal door, the back of the terminals are connected with non copper quick connects, I was thinking of using some silver solder and doing away with the quick connects, but the other end of the wire is probably connected with the same quick connects, so I guess I haven't accomplished much, the hole just keeps dropping, :-)

 

 

T

Check QS off the list after hearing what caps they use.  Other components undoubably match in quality.

Jerry

@tonydennison how did the other tube "break"?. Did it fail or get broken somehow physically? By chance do you have any idea how many hours are on the remaining three kt88 tubes? If you proceed - bring the other three KT88s with you to your tech and have them tested. Then decide from there if it’s worth buying a single replacement, biasing it up, and go. Or, if the three KT88s test bad, plan to buy a new quad set of tubes. As to be assessed with a tube test.

Mid Monos with Hersey H4s should sound also sound nice with EL34s too. My friend with the Hersey 4s just picked up a quad of PSVANE EL34s, liked them in a different amp though. Again, all of this leads back to type of sound you want... 

The more we learn, maybe it would be beneficial to take the preamp and amps with you to the tech at the same time then - have it all checked out, tubes, bias all input/driver (inside bias adj) and output tubes (external). If all checks out good, a piece of mind. A capable tech should be able to breeze thorough this. If they are acting uncertain, go to another tech. Best of luck.