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Top octave augmentation? [message #39182]

Sat, 23 November 2002 05:21

Garland
Messages: 269
Registered: May 2009

Grand Master

Has anyone succesfully added a super tweeter(s) to their Pi's? I have my Theater 4's in a fairly damped room and would like a bit more high freq. Sparkle. I've read in the archives of Wayne's suggesting parallel KSN-1038's, two per channel.

Thanks!

Garland

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Re: Top octave augmentation? [message #39186 is a reply to message #39182]

Sat, 23 November 2002 11:56

Wayne Parham
Messages: 18791
Registered: January 2001

Illuminati (33rd Degree)

You might consider using the JBL 2405.

The only problem is once you do this, it is no longer a uniform directivity speaker. You'll be able to hear a change as you move around the room, as the super-tweeter and horn tweeter interact differently at different angles. It might be a fun experiment for you. Try the speaker without a super-tweeter and walk around the room. See how it has the same spectral balance. Now conect the super-tweeter and listen. You'll hear the sparkle change as you move about.

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Re: Top octave augmentation? [message #39188 is a reply to message #39182]

Sat, 23 November 2002 12:30

bmar
Messages: 346
Registered: May 2009

Grand Master

You could try an Eminence APT 50. its a small compression driver that is cheap and you can get it already attached to 3 different little horns. check them out at parts express if your inclined. Waynes suggestion about the JBL 2405 would be the ultimate.

Bill

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Question for Wayne [message #39194 is a reply to message #39186]

Sun, 24 November 2002 05:51

Garland
Messages: 269
Registered: May 2009

Grand Master

Wayne,

How would one add the JBL 2405 to the Theater 4's crossover? I'm afraid I need a bit of hand-holding on this. Is there anyway you could draw up a schematic? I recall a while back you spec'ed out a crossover for the Motorola 1038 with a pair o' resistors and pair o' caps. Would this be similar? and if I were to only want the super high freqs, say above 17or 18K could only a high pass filter be used on the 2405? If so what would an appropriate filter be?

Thanks!

Garland

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