Re: Leslie noise

[bpb@bpbsn.cca.rockwell.com (Brad Baker)]

>>>>> "Colin" == Spence, Colin <cspence@nelson.env.gov.bc.ca> writes:

    Colin> Sounds like the same noise I get from my 145, but I think
    Colin> mine comes over the audio.  There another, quieter click as
    Colin> I switch to slow speed but that noise is strictly
    Colin> mechanical in the motors and is much more tolerable.

My 145 randomly pops when switching from fast to slow and vice versa.
A conversion to the balanced amplifier type of hi-Z relay switching
*should* fix this. The replacement relay kit for the balanced
amplifier lists for $44.82. It does not require the use of the 12AU7A
relay tube. Those relays haven't been available for some time now and
this kit implements a replacement that doesn't require this tube. Thus
to convert an un-balanced amplifier to a balanced amplifier will
require one of these relays kits and other small parts.

Has anyone actually done this conversion?

Regards,

Bradley Baker
bpb@mlb.cca.rockwell.com