Super Heresy v2 Project

Quadaptor!

Quadaptor!

Active Member
I decided this morning to take a dip in the Super Heresy v2 pool and ordered a pair of the SMAHL V2 Drop In Replacement tweeters. What I have are a pair of Heresies with a date code of HWD, which I think indicates 1981 as the year of manufacture. I've had the speakers for several years now and absolutely love the way they sound with my Fisher 800B on both digital and analog playback media. My speakers are augmented with a stereo pair of SVS 1000 subs on the low end. My primary interest is acoustic jazz from the 1950s/60s and classical. The Heresies sound fantastic for small group jazz. A couple year ago I replaced the caps with a set from Bob Crites website and stuffed the cabinets with material salvaged from a beat up set of Boston A150s. To me, both made an audible difference. Given what I have described, I am interested in hearing your opinions on where to go next. For instance, are the caps and current crossovers appropriate for the project and, with my subs, should I concern myself with changing out the bass drivers and porting the back?? Thanks much ahead of time and I look forward to reading comments.

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Rather than the V2, with the Eminence Kappalite woofers, do a V1, with the Celestion woofers, instead, unless you want the weight reduction that the considerably lighter neodymium Kappalites deliver. Otherwise, you’re probably good to go.
 
Even if you have the subwoofers, replacing the woofer and porting the Heresy will improve what you have by;
1. Having improved upper midrange response in the critical area of 300Hz~600Hz.
2. Improved low-end response to crossover your subs a bit lower for a better bass to sub bass transition.

Try the TF1225, you will LOVE it.
 
THD+N said:
2. Improved low-end response to crossover your subs a bit lower for a better bass to sub bass transition.
Click to expand...
This makes a bigger difference than most appreciate. having some overlap will cross to the subs so much more smoothly than something that falls off at your xo frequency
 
My favorite iteration of a Super Heresy crossover is an "universal type" network based on ALK's Universal Heritage Crossover. This allows you to change midrange taps without having to change/recalculate the cap on the autoformer.
 
Being new to this, can someone explain the evolution of the ported Super Heresy 2 to the non-ported Super Heresy 3? I see the Eminence Deltalite II 2512 driver is recommended. Would this driver also work with the Super Heresy 2, or are there better drivers for the ported version? Thanks

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There are various drivers that have been used with good success in the ported Heresy. The original equipment K-42 is the progenitor of the woofers used in a ported Heresy configuration. The Heresy Industrial Ported (HIP) is essentially a "Super Heresy" but in a PA/sound reinforcement configuration. To tame the HIP and make it more suitable for HiFi use, the midrange and tweeter need to be attenuated to match the woofer for a flatter frequency response.

There are cast frame variants of the K-42 as well as stamped steel versions such as the TF1225. Then we have newer ones with neo magnets. Cast frame is nice, but it does not necessarily mean better performance. I discovered the Celestion TF1225 and found it a perfect match for the ported Heresy so I am slightly biased toward it, but I have K-42's to compare it to as well.

When you say "better drivers", what are you alluding toward? Better as in the "best" or "cost no object"?

I'll let Claude give you the history of v2 > v3.
 
THD+N said:
When you say "better drivers", what are you alluding toward? Better as in the "best" or "cost no object"?
Click to expand...
Of all the drivers recommended for the Super Heresy (ported and non-ported), which one would be the best to use and why? And I understand this involves personal perspective. However, it is personal opinions on how to proceed that I am after. Thanks
 
I believe there is only 1 woofer that Claude recommended for the non-ported Heresy upgrade. I can't recall the neo model. Someone will chime in on that.

For ported use, I can comment on the 1225 & K-42... the 1225 in the Heresy enclosure, when ported, is a perfect match. The low bass is extended, tight and not boomy in the least. The midrange is extremely smooth up to the crossover point. The light Kevlar impregnated woofer cone of the 1225 is where the "magic" seems to be. The woofer has an "organic" flavor that is very natural sounding. The K-42 sounds great all around, but I think the 1225 with it's Kevlar cone has the edge. These slight differences cannot be measured, but you (I) can hear them although barely detectable.

I have 5 ported Heresy's and they all use the TF1225's. I also have three K-42's laying in wait for other upcoming projects.
 
I see that Parts Express lists two Celestion TF1225s. One is rated at 250 watts and the other at 300. I have no plans to go anywhere near those numbers, but does it make any difference for me in selecting a woofer? My hunch is no, but that's why they invented questions. Thanks!
 
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