Ampeg SVT Pro tested out fine on the Hartke 300W 4×10 cabinet after a service of the sockets and connectors.
Came in with a report of bad sound & unacceptable output level. Owner thought he had damaged it powering on without a cabinet connected but this amp only has a tube front end, having a twin solid state power section so a no load on power up shouldn’t have mattered.
There were no signs of component failure in the power section & all preamp tubes were heating so began cleaning up the effect loop send returns for each channel of the output. Left, right & bridged outputs all outputting acceptably into my 300w 4×10 cabinet.
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