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Mesa Boogie Bass 400+ Repair Final.wmv
essoterric
76 views
First and most important - My many thanks to all who responded to my request for help. Each of you were a part of this solution. As I mentioned in my video, I cannot recomm...
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Mesa Boogie Bass 400+ Problems - Need Help.MOV
essoterric
142 views
Been working on this for over a week and can't get a handle on it. Any help would be appreciated. I can't even find a real schematic for it.
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Ampeg VT-40 7027A to KT88 Mod.wmv
essoterric
104 views
One more documentation of the venerable Ampeg amplifiers. I got the basic update information from the Internet. I set cathode current at 60 mA for the pair of KT88's. Hope ...
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Ampeg SVT 6x6550 Repair and Testing.wmv
essoterric
89 views
The combination of two plate resistors were reading about 12 ohms (instead of 20 as the schematic indicated) because the plate equalizing resistors were all 5.6 ohm resist...
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Mesa Boogie Bass 400 + Being Repaired and Under Test.wmv
essoterric
142 views
A short video on the Mesa Boogie Bass 400+ amplifier. Has an intermittent crackling sound I am trying to resolve.
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Vintage Tektronix, General Radio Equipment.MOV
essoterric
71 views
Playing with different vintage equipment trying to decide what to make a YouTube video of next.
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Tube Plate Temperature vs Performance In Audio Power Output Tubes.wmv
essoterric
139 views
In working on vacuum tube amplifiers, just for fun, I started measuring the temperature of the output tubes with an IR (infra red) thermometer with a laser pointer. Much to...
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Pioneer M-22 Class A Power Amplifier.MOV
essoterric
148 views
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Comparing The Tektronix 130 L/C Meter With A New Chinese Made L/C Meter
essoterric
464 views
Comparison of a vintage analog (50 year old) Tektronix Type 130 L/C meter with a new Chinese made digital meter purchased recently. Love the Tektronix but the new one perfo...
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McIntosh MC 2100 Undergoing THD and Output Power Tests.MOV
essoterric
442 views
Making THD and output power measurements on the McIntosh MC 2100. A beautiful and well performing solid state amplifier from the '70's.
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