dynakit st70
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| Condition | |
| Payment methods |      |
| Ships from | Goleta, CA, 93117 |
| Ships to | United States |
| Package dimensions | 14.0" × 10.0" × 8.0" (35.0 lbs.) |
| Shipping carriers | USPS, UPS or FedEx |
| Shipping cost | Log in to see price |
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Dyna ST70
working well
modified:
one side set up for
6L6 (higher bias voltage).
both pairs output
tubes wired in triode mode, less power and distortion.
7199 replaced with
6GH8A which is more available and sounds better.
Replaced 4 coupling
caps with better.
replaced rectifier
tube with diodes giving a bit more voltage and therefore power.
Added volume
controls.
has one pair of
6L6GC and one pair EL34 tubes.
Tested for clean
power, see scope shot.
6L6 14W into 9.4 Ω
(what I had)
El34 20W into 9.6 Ω
(what I had)
I
had built this to bi-amp a single set of speakers as |I am deaf in
one ear. I have since gotten a simpler system.
Will entertain offers. Will modify for a price, ask.
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