Just picked up a pair of JBL 2446Js and currently integrating them into my 4 Pi Towers (Lapaire's) crossed over at 500hz (Paschetto's).

So, I have a pair of 1.6Khz PI crossovers and PSD2002 tweaters with horn flairs. The plan is to put the PSD2002 on top of the towers, connect the Alphas to the crossover and give them an audition (disconnect the KSN tweeters).

Any recommendations on how they might sound?

The Alpha 8 are a little less efficient that the Deltas' - are they sufficiently different to change the tweeter attenuation?

Any comments are welcomed.

Hakn

I did the exact same mod a couple of years ago. Called it my version of the "Thermionic-2". Great sound. More refined and controlled. Loss a bit of "liveliness" though. I think one of the things that make the Studio-2's sound so great is the simplicity of its crossover. Somewhere between zero and first order.

I've since put this set up away and moved to the Theatre-3, so I can't have you the compensation network values. Wayne's crossover document should give you the values though

What horns are you using with the 2446? I had 2380A's on my 2445 for a while, but found my DIY smith horns to sound nicer. Less edgy at high volume and larger sweet-spot.

gar.

• "Thermionic-2"

I should have the 2 Pi Tower with the PSD2002 tweeters staged tomorrow. I will keep you posted.

Also, I want to take this opportunity to thank you Wayne for hosting a great site. This hobby/site has introduced me to some extraordinary people, and has brought me closer to my boys - we build Pi speakers, kit based vacuum amps and preamps together.

It a pleasure and an honor to be part of the Pi community!

Hakn

Jim

I don't know what flare I have- I picked up the Horn used, and it was without the model number. It is like the 2380, but without the rectanglar channel.

We set up the PSD2002 with the PI 1.6Khz crossover - with out the LF Zoebel. The sound is almost there - I think a little more attenuation on the HF to match the woofer is going to help.

The bass is less pronounced that it was with the 2 Pi Tower - with that simple crossover - really miss the low end punch. Is it conceivable to use the HF Pi 1.6Khz crossover, with the 2 Pi LF crossover to get some of the LF back?

Hakn

Like Wayne said, the bass is there, but it's being overpowered by the treble. Put the Zobel in to further cut the midrange from the woofer. Without the Zobel, your crossover's not acting like a true 2nd order filter.

I pretty much duplicated Wayne's design in his crossover document with 12dB attenuation in the compensation network.

gar.