| Originally posted by SoComSurfing |
I recently acquired a Trace GP7 SM300, and have had a difficult time finding any info on this model over the past two weeks. Is there anyone here who is familiar with this amp, and has any suggestions on it?
Also, on the back, it's got two outputs, each labeled for an 8ohm load. Is there a way to run a 4ohm cab from it? I plan on running an 8ohm 2x10 from one output, and an 8ohm 1x15 from the other, but if the event came up that I wanted to use a single 4ohm cab, would I be able to?
Cut and pasted from the Trace Elliot downloadable manual :-
The 7-BAND range consists of two amplifier heads, AH150 and AH300, and three
combos, the 7210H, 7215 and 715. All have the same 7-BAND pre-amplifier.
AH150-7 and AH300-7.
The AH150-7 produces a minimum of 150Watts RMS power into a 4-Ohm load and the
AH300-7 produces a minimum of 300Watts RMS power into a 4-Ohm load. On both
amplifier heads there are two speaker output jack sockets provided, allowing two speaker
cabinets to be connected. The combined impedance of these speaker cabinets must not
be less than 4 Ohms. Two 8-Ohm cabinets is the ideal load for these amplifiers. It is good
practice to use both outputs for two cabinets rather than ‘daisy-chaining’ them as it
minimises the current required at the jacks and by the cable used.
If you are using one 4-Ohm cabinet, then no further speakers can be connected to
the amplifier or the combined impedance will fall below 4 Ohms. If this occurs you will
just be wasting power in heat generated by the output stage and no more volume will be
available than with the single 4 Ohm cabinet.
Hope this helps!