[Hammarlund] Re 600ohms audio output

[Glen Zook]

Use a filament transformer.  The 120 VAC primary is wired to the 600 ohm source and the low voltage is used for the speaker connection.  Radio Shack has filament transformers with a 12.6 VAC center tapped secondary.  Using half of the secondary works very well with 3.2 ohm speakers and using the entire 12.6 volt winding works very well with 8 ohm speakers.  However, using either a 6.3 volt or 12.6 volt secondary without a center tap will work as well.  The impedance "matching" is not that critical.

Frankly, 99.99% of the population cannot tell the difference in audio quality between a "real" audio transformer and a filament transformer.

Glen, K9STH

Website:  http://k9sth.com


--- On Tue, 2/2/10, Rick Gouge <rickgouge at shaw.ca> 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.