Model 19 Ground Bypass Mods Revisted !

[mac24]

Hi Mike,

All the info you need are in these threads.All the info you need should be here, but of course if you have any other questions. I would be happy to answer them..

I would use Solen Fast Caps 250v or 400v are fine..Leave the coils ! They very rarely ever go bad, and is a waste of money IMHO.. The parts you may have to source from 2 different places to get the correct values.. Like for the 3.9 Ohm resistors I had to get them at Madisound as Parts Express don't carry them.You may also have to use 2 different caps to reach a value like using 2 8 uF caps to reach a 16uF value..The hardest cap to find will be the 21uf so paralleling a 10 and an 11 uf cap maybe required.

New Member here..

New Model 19 owner - xover/foam questions

Okay, thanks.

A couple other questions for you then...............is there any benefit / disadvantage to using a 10 and an 11 cap for 21uF, versus using a 20 and a 1 together?

Also, I think I've identified everything I need, but I'm a little stumped as to the L-Pad. The Altec schematic I have lists R1, R3 = 8 ohm L-Pad, but on the drawing it shows
R1=8 ohm and R3 = 35 ohm? Plus, I can't physically find them on the crossover board.
Sorry, probably silly questions but remember..........non-tech here

One more question. I'd like to use Mills resistors but they only seem available in a 12w as opposed to the 10w specified by Altec. Is it even possible to use the 12w instead, and if so what would the main difference be ( HF volume etc. ) ?

Thanks for the help and patience,
Mike