Leslie stuff

[David Halliday (Volt Computer)]

Sounds good!

The reason I quoted 40 watt is that this is what Goff is using in their
setup.

Since your slip ring was handling an incandescent light, it is probably
perfect for the task.  I was worried because I have seen some
instrumentation sliprings that are gorgeous - low resistance and low
friction but are only designed to carry a couple milliamps.  To be used for
taking a measurement, not for any kind of power.

Yours should be fine and as you say, the power will only be a couple watts
for most of the time.

-----Original Message-----
From: Doug Tymofichuk [mailto:dougt at cancerboard.AB.ca]
Sent: Thursday, August 05, 1999 1:26 PM
To: David Halliday (Volt Computer)
Cc: synth-diy at mailhost.bpa.nl
Subject: RE: Leslie stuff



On Thu, 5 Aug 1999 12:56:20 -0700  "David Halliday (Volt 
Computer)" <a-davidh at microsoft.com> wrote:

> I was looking at that web site and they say that the speaker is driven by
a
> 40 watt amplifier.  
> 
> Is your slip-ring assembly able to handle this kind of power?  This can
> amount to as much as ten amps - enough to spot-weld a small brush to the
> ring...
> 
> Maybe this is why the Leslie's that I have seen use a fixed speaker and
> rotating baffle / horn.
> 
The two ring slip-ring that I have (3 of them, actually) is 
probably good for at least 8 amps per ring, as that was the 
current flow through it in it's original use. As well, it 
was powering an incandescent bulb, so the peak current draw 
would have been much greater than that. So I would not be 
worried about forty watts, which should never be continuous 
power anyways.

Actually, I was planning on something closer to ten or 
fifteen watts anyways, as I wouldn't think much power would 
be needed in a small box with microphone pick-ups. I am not 
trying to build something with audible acoustic output, 
just line level signal from the mic preamp.

----------------------
Doug Tymofichuk
dougt at cancerboard.ab.ca