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Jerry Jerry is offline
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Default AR3a/AS103a speakers and the Heathkit AR1500 receiver

Peter Wieck wrote on 8/7/2006:

John Stone wrote:

I thought all your bi-amping adventures were done with the purpose of

not
altering the original design of your AR3a's.


John, the various mod sites noted emphasize the need for a fixed
resistor in place of the pot, simply bypassing the adjustable function.
Yes, *maybe* get them out of the circuit, no, do not alter the overall
function of the circuit.

http://layneaudio.hypermart.net/AR3aXorig.gif shows the OEM crossover
arrangement. One may either bypass the wiper directly to the 0-ohms
position, or remove the pot inserting a 16-ohm resistor and tying the
correct leads at the 0-ohm position.


Peter, if I were going to do this, I'd just solder the lead going to the
driver to the top of the pot. This by passes the wiper (which by now is
heavily corroded), but it leaves that 16 ohm wire resistor encased in
ceramic in the circuit. Current is still flowing through that resistor and
I like the fact that while it's inside the box surrounded by all that
insulation, that it's encased in ceramic.

That's NOT what I did, however. Pots are completely out of my xovers. All
I really did was move the function of the pots back to the volume controls
on the individual amps.

Under a single amp, I don't think "soldering to the top of the pot" would
actually work, Peter. I mean that balance would be way off ... far too
bright!

Regards,
Jerry