bluebird
Well-known member
for reference:
http://www.waltzingbear.com/Schematics/UTC.html
the A-21 is 50-200-500 ohms primary AND secondary.
the O-12 is 50-200 ohms primary and 50-200-500 ohms secondary.
the O-12 is used in the 1176 backwards as input. 500 ohms to 200 ohms.
I installed an A-21 with the same configuration except I used it normaly with the primary being 500 and using the 200 ohm tap on the secondary. same thing 500:200 step down.
The Problem:
with T-attenuator installed I start getting distortion when going into medium compression. I can only get about -3 or -4 db reduction before distortion. this is feeding it with numourous types of sources.
So what gives? I would think the A-21 would be able to handle more than the smaller O-12?
should I filp the A-21 around and use the secondary as input? I don't see how that would make a difference though.
the good news is the distortion actually sounds really good... I just wouldn't want it on everything.
Ideas?
http://www.waltzingbear.com/Schematics/UTC.html
the A-21 is 50-200-500 ohms primary AND secondary.
the O-12 is 50-200 ohms primary and 50-200-500 ohms secondary.
the O-12 is used in the 1176 backwards as input. 500 ohms to 200 ohms.
I installed an A-21 with the same configuration except I used it normaly with the primary being 500 and using the 200 ohm tap on the secondary. same thing 500:200 step down.
The Problem:
with T-attenuator installed I start getting distortion when going into medium compression. I can only get about -3 or -4 db reduction before distortion. this is feeding it with numourous types of sources.
So what gives? I would think the A-21 would be able to handle more than the smaller O-12?
should I filp the A-21 around and use the secondary as input? I don't see how that would make a difference though.
the good news is the distortion actually sounds really good... I just wouldn't want it on everything.
Ideas?