[Hammarlund] Re 600ohms audio output

kirklandb at sympatico.ca kirklandb at sympatico.ca
Tue Feb 2 15:53:07 EST 2010


I believe it is a 70V (or 70.7V) line matching transformer.
They generally indicate an input wattage, and an output impedance, e.g. 4, 8 ohms.

> Date: Tue, 2 Feb 2010 14:19:20 -0600
> From: n0jmy at hayseedhamfest.com
> To: hammarlund at mailman.qth.net; Glowbugs at piobaire.mines.uidaho.edu
> Subject: Re: [Hammarlund] Re 600ohms audio output
> 
> I had a SP-600 years ago and I remember you could easily match (within 
> reason) its 600 ohm output to to a 8 ohm speaker.  You just used a 
> cheap-o Radio Shack or whatever filament transformer.  One of those 
> about an inch and a half square jobs.
> 
> It was either 6.3 or 12.6 on the secondary but I can't remember which... 
> and I can't remember the formula.
> 
> Anybody out there lend a hand?
> 
> 73,
> Tom
> 
> On 2/2/2010 1:16 PM, Rick Gouge wrote:
> > Sorry. I was not very clear on what i was looking for. What i need is a 600 ohms trans to 8 ohms. Anybody have one of these forsale. Not much into the Ebay thing here. Rick VE7RiK
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