|Author:||Greg Robinson (registered user: 147 posts )|
|Date:||Thu, Feb 09th, 2012 @ 03:21 ( . )|
Automap, you mention you measured the output of the amp with a load meter, do you know how it operates and how it actually measures the output? You mention that the amp is clipping at 4 watts. Well, yes, it's supposed to. If 4 watts is the maximum clean output for this amp, I would not be at all surprised.
When you took the measurement, did you have all controls dimed? Or did you just measure at maximum clean output?
The SEL is designed to distort, so the maximum clean output is significantly lower than the maximum distorted output.
Also, some load meters take an RMS reading, which will not give an accurate reading for a distorted waveform (it will read low). The output from a SEL at max settings will be close to a square wave.
As an example, a square wave with output of 12 watts will read as around 8.4 watts RMS, so that could be another problem with your measurement.
The only accurate way to measure the maximum distorted output of a guitar amp is to use a resistive (NOT REACTIVE, like a speaker emulator) load and an oscilloscope.
When you clarify these points we may be able to assist you further.
--* SEL DONE layout check and pics please
2/10/2012 @ 10:51--automap68
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