about dummy loads

C

cheeseface

New member
Let's say I have a tube powered guitar combo amplifier that has a monitor output. Let's say that I wish to disable the amp's built in speaker and only use the lineout. An appropriate resistor or "dummy load" is needed in place of the speaker.
Will this minor surgery change the way the amp works and thus the signal coming through the monitor out?
 
Re: about dummy loads

I don't think it would change the signal coming through the monitor out in terms of the amount of signal etc, but it would likely change the tone of the amp in a negative way. You would need a reactive dummy load of some sort to not change the tone such as a purpose built one instead of a plain-jane resistor.
 
Re: about dummy loads

What drpietrzak said.....

Those Weber Mass doo-hickies are the dogs testicle (or jolly good, what!).
They have a speaker coil in a magnet and give a lot of the impedance/frequency changes that a full blown speaker would do. This means the power tubes are behaving almost exactly as they would into a speaker - end result, quiet but good sound.

Plain resistive loads sound..... weirdly flat to the point of being dull at anything more than about a 50% loudness cut (ie: 12dB. or 50W to 3W), even driving a speaker.....
 
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