For what we invested this is a great product don't get us wrong . we just want to improve the tweeter and get a more open and robust upper voivce region. Pi 4 have been considered but he doesnot want a larger foot print

Has any one upgraded to a better tweeter that handles the crossover with the 10 inch better? Any suggestions is appreciated.
Like how about using a better tweeter from the upscale pi family

Any suggestions from Pi2 users and Wayne

In advance of Wayne's reply, which is sure to be prompt and well thought out, be aware that the two pi is now shipping with a Vifa HF driver and associated 6 dB/oct. HP filter cap. Seems to me this would be a natural upgrade path for you.

The first was replacing the piezo tweeter with an Eminence APT80. The cost of the APT80 was reasonable, but the components required for a pair of high-pass filter pushed the cost up. Looking back, it wasn't a worthwhile mod. The KSN1038 tweeter is actually a very good driver and there are various ways to tweak it to your taste. In fact, I'm using a pair of it as UHF in my JBLPro system.

The second mod was replacing the tweeter with a PSD2002 compression and crossing over at 1.6KHz. I called it my "Thermionic 2 PI" and it bumped the Towers up into the next class. Big improvement, but the cost for a pair of compression drivers, horns, and crossovers was a big investment. Unfortunately, my front baffle was cut exactly to plan and I did not have enough room to fit in the horns. The horns sat on top of the cabinet for several months. If your baffle can fit a pair of horns, this would be the mod I recommend.

The last mod was attaching Wayne's midrange horns on the Alpha10 to emulate the 8PI. That was a lot of fun too.

Gar.

• New Vifa Tweeter

  Report message to a moderator

I have also paralleled a 50 ohm resistor across the tweeter, but I'm
less sure of a significant difference here. I use these speakers with
gainclone amps, and I thought the resistors might make the load more
benign, as gainclones are reputed to dislike capacitative loads.

Please take my comments here as coming from one without significant
technical authority

Skip

Adam

In terms of crossover, Wayne should be able to help you with that too. It's a variation of the crossover used in this 3PIs and 4PIs. He'll put together network that includes a 2nd order low-pass, 3rd order high-pass at 1600Hz, attenuation to match the tweeter with the woofer, and compensation for the tweeter in its upper range. You can download a detailed description of this network from his website a www.pispeakers.com.

As for fit, look up the dimensions of the H290 horn on Eminence's website: www.eminence.com to determine if you have room. Like I said, I followed the orignal plan exactly and was short 1/4" between the Alpha10 and top panel. Frustrating cause it was only 1/4".

Not much to show photo-wise. Imagine a horn sitting on top of the Tower. However, if you can fit the horn on your front baffle, it might look something like my Theater 3's.

Gar.

• Theatre Three PI Photos