Totally Tubular: The Tube Thread
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Jbraswell
Well-Known Member
Picking up these GE 6550 tubes to see how they sound in place of the KT120 in the Rogue.
The guy ran them in his Conrad Johnson amp and sold the amp sans tubes.
He was not entirely sure exact vintage. Thought was late 60’s early 70’s as these came out of an early 70’s Ampeg SVT amplifier.. the lettering is mostly worn off but the two that still have numbers appear are KY 88-5 on one and KY 18-5.
His test data:
Tested my TV 7/U tube tester
46,46,48,46 where 44 is good.
For me there is nothing wrong with the KT120 but since I am powering the LF woofers with the Denon amp, I thought I could maybe squeeze some more tubey magic out of the mids and highs. If it's not a more favorable sound, I can probably get my $200 back selling these.
The guy ran them in his Conrad Johnson amp and sold the amp sans tubes.
He was not entirely sure exact vintage. Thought was late 60’s early 70’s as these came out of an early 70’s Ampeg SVT amplifier.. the lettering is mostly worn off but the two that still have numbers appear are KY 88-5 on one and KY 18-5.
His test data:
Tested my TV 7/U tube tester
46,46,48,46 where 44 is good.
For me there is nothing wrong with the KT120 but since I am powering the LF woofers with the Denon amp, I thought I could maybe squeeze some more tubey magic out of the mids and highs. If it's not a more favorable sound, I can probably get my $200 back selling these.