Dave

http://www.home.earthlink.net/~hwatkins/id63.htm

As an added bonus, here is my finished 2 Pi speakers:

http://www.home.earthlink.net/~hwatkins/id62.htm

Sorry I left off the URL; I just read your post.

Hope they still have them. If I had the money I would have picked then up. Good luck!

On mine, I put 16 Ohm resistors on the squawker, changed autoformer to lower efficiency a bit in the mids, added dowel to box to stiffen, put plumbers putty on outside of the horn and woofer basket, added stuffing to inside of box and built the P-trap for the squawker.
I think that covers everything I've done to the old 1975 Heresy's. They sound MUCH better then when I found them.

Dave :^)

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Dave

I think Jim is following in your footsteps. I understand he is putting a 16 ohm resistor across the midrange and changing the transformer tap too. I'm pretty sure he learned this from you, here on the forum. He told me that he's bracing the boxes like you've described too.

I expect Jim will let us know when he has had some time to install the parts and evaluate the changes.

Wayne

It is very much what I expected:

2 Pi - disregarding labor, materials for the 2Pi was less than $275 total. For that price I could not imagine a better new speaker. It is very efficient and a surprising two way. The Eminence speaker was an instant success to my ear. I still have some difficulty with the tweeter in a comparison with the Heresy, but when not comparing the two it is a reasonable solution. As a speaker I intend to give to my daughter that was more of a 'carpentry practice', I was more than pleasantly surprised and may well keep (move to my office) until I think her ear deserves it (grin).

Heresy - I still have an affinity for the two horns on this speaker and most everything above 700- 800hz is a joy (at my age - not having much above 16Khz seems to be of little relevance). As expected the stuff below 700hz is not my favorite part of this speaker.

For overall performance, I will be staying with the Heresy. However, there BR portion of Wayne's design is a very pleasant surprise and is why I will be making something akin to a Pi aligned three way with horns for the higher freqs and BR for the lower freqs.

Also - even if comparing with the used market, the 2 Pi can be significantly cheaper than Heresy II and an interestingly equitable performer, especially in the Low freqs.

Henry