WHARFEDALE Delta 9 - specs & X-over help

[brett-ballarat]

WHARFEDALE Delta 9 - specs & X-over help

Hi all,
Hoping for some help with specs on some inherited speakers.
I need to replace blown tweeters and am hoping for some suggestions.

Would also appreciate some help with the X-over frequencies that the factory board is generating to assist in replacing these same tweeters.

The X-over schematic is attached with an equiv (hope I have the right end of the stick) ** note mH is a guess they are simply labelled 47. and 04. (maybe they are milli, maybe they are micro Henry)

My real problem is I don't know the speaker impedence and I'm as green as Kermit with speaker X-overs, speaker design etc..

I have to repair a woofer (split rubber) but obviously if I can't figure out what tweeters to slot in I'll forget about the woofer.

All help appreciated - I will post a pic of the speakers/drivers if anyone thinks it will help

Brett

 

[brett-ballarat]

Just viewed the post on a different computer -- apoligies for the image.. you will need to full at full size to read the values and see the image correctly.

For those that still can't get the image to work...

Tweeter -- signal through 1 ohm resistor into 4microFarad cap
-- Inductor of unknown in parallel

Mid -- signal through 12 microFarad cap into 47. (microHenry?) inductor.
-- 8 microFarad in parallel

Woofer -- signal through inductor 04. (microHenry?) inductor

I think the equivelent X-over would be described as a first order Butterworth
initially -- L1 = 04 low pass
-- C1 = 12 microFarad high pass

the High side is the split with a 2nd order Linkwitz-Riley
-- high pass -- L = unknown
-- C = 6 microFarad
-- series resistor prior to capacitor (1 ohm)

-- low pass -- L = 47 (microHenry?)
-- C = 8 microFarad


Hope this helps those who might be able to help but can't see the picture.

Brett