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OTL Asylum OTL, Output Transformerless Amplifier User Group. |
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In Reply to: RE: that is very odd posted by Lew on June 14, 2012 at 08:26:35:
Lew
I started measuring stuff only after my friend complained that my system "had no highs." Measurements confirmed this--measurements that with a different amp revealed a quite linear response. In trying to explain the difference, I ran the impedance curve.
The impedance curve was typical of an ESL. So, if the impedance curve was not wildly off and other OTL's seemed to be able to handle the load, I had to look at my particular amplifier's ability to handle the load.
It was then I discovered that some of the tubes were bad. As you have confirmed, bad tubes in an OTL circuit can really hurt the ability of the OTL to deal with low impedances.
I'll know more after I put in some good tubes.
Cheers,
Chuck
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- RE: that is very odd - throwback 15:04:44 06/14/12 (0)
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