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ClaudeJ1

Super Heresy 1 (Baby Cornwalls Mod.)

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On 7/4/2018 at 2:10 AM, ClaudeJ1 said:

 So, I'm suggesting you try shorting out the inductor with a single pole switch for immediate A/B listening test on one channel, then measure if you hear a difference......just sayin'. When I did the simulation curves, it shows that the rolloff occurs 300 Hz. sooner than with the Eminence driver in the original Super Heresy. I'm not saying this was a bad choice, however the 1.68 mH inductance, coupled with the 52% greater cone Mass of the Dayton clearly shows this effect in the sims. So shorting out the inductor would remove that variable. It's certainly worth a try to see and hear.

 

Moved the left K-Horn out of its corner and set up a Heresy on the floor, 30 degree toe in, 1 foot from the side wall and 1 foot from the rear wall. Mic 1 metre on axis with squaker, sound absorber material on floor between speaker and mic.
Couldn't hear any difference with woofer crossover inductor in circuit or bypassed.
image.thumb.jpeg.04e4a0bcb98a5bbfb2fdb345e33de51c.jpegRan sweeps with the woofer only connected, no crossover, then with the crossover in circuit, very little difference until up around 600Hz.

Green - woofer direct to amp, Red - woofer connected to x-over.


However, the bass response was lumpy compared to previous measurements so I put the Heresy up on the lab stool (2 feet off the floor) still in the corner and remeasured and the bass was a lot smoother and easily compensated for with a bit of bass boost at the amplifier. Music sounded very good.
image.thumb.jpeg.ea5fb362908e549e027b269288dac934.jpeg
Red - as measured on stool, Green - amp bass boost at 3o'clock

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Looks to me like further improvement in the magnitude response flattening (incorrectly and more commonly known as frequency response)would require dropping down the intensity of both horns in the Xover............starting with minus 3 db and cutting the capacitor values in half.

 

It would have been a much easier mod if you could have gotten the Delta Pro 12A woofer, but I do understand why you had to compromise.

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I think this 1 watt comparison  to a Belle with K33  shows the value of this great mod

 

here's the same graph with the title corrected from Delta 12a to Delta Pro 12a😁

ghevEDN.jpg

 

 

 

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20 minutes ago, karlson3 said:

I think this 1 watt comparison  to a Belle with K33  shows the value of this great mod

Thanks for doing that. Looks great. One small correction of omission, it's an Eminence Delta PRO 12a.

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Data is right but I confused the name (AGAIN - duh) -  that is the spec for the Delta Pro 12a.  

 

it looks like the PRO version can squeak out more bass (and top)

 

btw - my Delta Pro12a spec was very slightly different than the current pdf 

did it ever change ? - or did I botch the input?  B102 got modified from qts= 0.23 to qts = 0.39, suspension change

and quite different.   Eminence specs are awfully good/close to real compared to a lot of other manufacturers 

 

eehaRo9.jpg

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I really love my mod it really shows up in the upper mid bass, really helps the midrange. For me, it helped to cut down on the brightness and hardness of the horn midrange. Gives the speaker a much smoother sound.


Sent from my iPhone using Tapatalk

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On 7/18/2018 at 2:25 PM, karlson3 said:

Eminence specs are awfully good/close to real compared to a lot of other manufacturers 

I agree. Jerry from Eminence does a great job with this and his cabinet designs. Just saw him last weekend at Midwest Audio Fest. He was a speaker competition Judge. Good guy, good Company (they make a lot of Klipsch woofers, and also Crites). 

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On 7/21/2018 at 11:11 AM, Terry Palmer said:

I really love my mod it really shows up in the upper mid bass, really helps the midrange. For me, it helped to cut down on the brightness and hardness of the horn midrange. Gives the speaker a much smoother sound.


Sent from my iPhone using Tapatalk

Glad you noticed. The reason for the original mod was to improve the Midrange/upper bass. The lower bass was bonus that occured because I knew that a high BL product woofer (big magnet) would tilt the response towards the midrange and thin out the bass if the Heresy had remained sealed. My original enthusiasm was because I was quite surprised at how good it all sounded top to bottom and I measured from my sweet spot to verify what my ears told me. Thanks for the positive feedback!

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Don't forget the old rule "If one pair sounds good, add a second pair". I think 2 pair of Claude's SH's are freakin awesome sounding and a good alternative for someone who wants great Klipsch sound with limited bucks to spend.

 

Other items in pic are just eye candy, an old obsession of mine, there are seventy more of them hanging on the walls here and there.

 

Continue your discourse, guys, I just felt this reminder was necessary, given the success of these mods.

20180722_125725.jpg

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On 7/22/2018 at 2:17 PM, ishwash said:

Don't forget the old rule "If one pair sounds good, add a second pair". I think 2 pair of Claude's SH's are freakin awesome sounding and a good alternative for someone who wants great Klipsch sound with limited bucks to spend.

 

Other items in pic are just eye candy, an old obsession of mine, there are seventy more of them hanging on the walls here and there.

 

Continue your discourse, guys, I just felt this reminder was necessary, given the success of these mods.

 

Really nice. Thanks for sharing. But I thought Quadrophonic died in the 70's. My bad!! LOL.

 

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Have you ever heard a REAL quad setup on a original quad mix?   MIND BLOWING. I think it holds light to this day.   The modern day version of this is 3D mixing in clubs.   Above and beyond for sure.   Total mind trip. 

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I was lucky enough to hear the original bohemian rhapsody mixed in quad and played back on a proper quad setup.  Those guys were WAYYYY ahead of their time. 

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On 7/22/2018 at 1:17 PM, ishwash said:

Don't forget the old rule "If one pair sounds good, add a second pair". I think 2 pair of Claude's SH's are freakin awesome sounding and a good alternative for someone who wants great Klipsch sound with limited bucks to spend.

 

Other items in pic are just eye candy, an old obsession of mine, there are seventy more of them hanging on the walls here and there.

 

Continue your discourse, guys, I just felt this reminder was necessary, given the success of these mods.

20180722_125725.jpg

 

Definitely glad you weren't nekkid and standing up in that picture.  ;)

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14 minutes ago, Terry Palmer said:

Is there any consensus on how much insulation is needed for the Super Hersey?


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In my view, if it pops out of the port, it's too much. ha ha.

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8 minutes ago, Westcoastdrums said:

Less is more,   More is less.   Got it 

I'd say look at my pictures on page 1 as a pretty good start.

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I wanna hear these puppies and give you props for slightly "reinventing the wheel" in this one.   Well down sir. 

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3 minutes ago, Westcoastdrums said:

I wanna hear these puppies and give you props for slightly "reinventing the wheel" in this one.   Well down sir. 

Let's just say that during and after 4 years of multiplying, people seem to really like them. Half luck half science at play.

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