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Tom Mobley

who has the Heresy mod for easing the brightness a little?

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was it John Albright?  too much water under the bridge for me.

 

Mine are 77s, bought new, been semi-retired for several years now.  Kinda like me.  Anyway, got them out the other day, immediately noticed the brightness.  Want to use them as primary in a small room.  I thought I has saved the diagram in my Crossovers folder but no sign of it.  I'll run them off a BT connection through a small digi-amp.  I think it's a Yammie about 20W/channel.  Should be OK in a small room.  It really sounded good with my '60 Khorns.

 

Anybody remember?

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Tom... I can get it for you , but I'll have to dig it up.

 

Bruce

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Thx Bruce for whatever you can do.  I just found an old HDD, might be on there.  Should be able to get it going, I've still got a weenders laptop here somewhere.  IIRC, it's an '03 Dell.  I know it's here somewhere.

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Not a mod, already tried in corners on the floor unobstructed and angled up a little? It does make a difference in bass response. I did that and knocked the treble pot back to 11:00 for years with mine.

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Its not your speakers imo. Could you post some pics of your room? Do you have room treatments? Carpet, wood floors? I have owned two sets of herseys, cornwalls and la scalas. None are overly bright (not even close), but all would be in the wrong room conditions. 

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FWIW - can't stand my Heresy I with grills on - nasty reflections and vague -  muffled sound.  With them off, mounted high on a wall, and driven by an inexpensive SE UL EL34 amp , the mids and highs are pretty good and never shrill (caps are 2uF KBG) - my only beef is the blend between the woofer and K700/K55V  (a change in the lowpass might fix things?)   Fritz Wunderlich (EMI lieder CD) sounds great - - Jimmy Martin sounds great.    I'm a fan of PWK's exponential horns.

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IMO, it probably isn't the tweeter that is too bright, but the K55.  If there is a way to turn that down several dB, that might help.

 

Adding a sub might help.

 

Also first reflection points on walls AND the floor. 

 

I've heard bright and dull Heresy 1(s)  I don't know why there should be a difference in balance.

 

I have Heresy II surrounds; they sound pretty well balanced.

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What Dean posted it IT! You can simply do only the 11 ohm resistor and it will do wonders, the other changes are icing on the cake.

 

Bruce

 

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Since the resistor changes the reflected impedance seen by the amplifier, you have to change the primary input cap from a 2uF to a 21uF.

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