Originally Posted by radfonz
I've just bought a second hand Hartke LH1000 amp. I've plugged into my cab(2x15") and it is REALLY quiet and fuzzy. My cab has XLR cable connections and the amp has 1/4" jack.
Make sure you are set for Dual Parallel and _not_ bridging.
Bridging is available _only_ at the Speakon connector.
What is the impedance and power rating on the cab?
The make and model would help too, as someone else (not me...) probably has one...
The LH1000 manual is available online and is pretty helpful about offering setup suggestions...