Hi and thanks for reading,
I have a pair of La Scalas with the Type AL crossover, as pictured. It seems to be pretty hard to find a circuit diagram for this network, including from the thread between Bob Crites and ALK. There are no pictures I can find online and from the few discussions I have read, the general advice is that rather than re-cap it, this network should be replaced with something else - Both Crites and ALK have solutions, but both run into several hundred $AUD with postage and I don't have that sort of budget atm.
La Scala LSBR S/N 8504510
K55-M squawker
K-77M tweeter
In terms of capacitors on the crossover, these are the markings on each part:
3x 2uF [+- 5%] 180 VAC - black rectangular block type
2x 8uF [+- 5%] 250 VAC - black rectangular block type
1x 30uF 250 VAC "CDE Soggy Foil Protected" 60 Hz - large canister type
There is also a resistor marked "5 [Ohm] 10%" - white packaged type.
My questions:
Is it indeed not worth (in terms of financial outlay) replacing these parts with new components of the same values?
What capacitor types are these and what would be suitable replacements (as I am not familiar with the respective uses of the various capacitor package / build types)?
What would be the best bang for buck, if I had to choose between parts to replace - treble, mid or bass? I assume top end?
My understanding is that there would be no benefit updating any of the inductors or transformers. Is this correct?
Are there any other alternatives apart from Crites / ALK ? I would also consider DIY if I had a solid schematic and wiring guide to follow.
I am spurred on to try the re-cap after some significant success replacing the caps on some 1975 Mordaunt Short speakers this week, dramatically uplifting performance!
Any advice, experiences or general comments would be most appreciated. Anyone locally (in Australia anyway) done this before?
Thanks!
IWS