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i n f o @ m a s t e r p l a n t . c o m
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Attenuator
1) Connect amp speaker out to ATTENUATOR input
2) Make sure your amp is matching your ATTENUATOR
3) Connect ATTENUATOR speaker out to speaker cab
4) Adjust attenuation level
FAQ
Can I use this unit with any amp or speaker?
It supports 4
Ω
-8
Ω
-16
Ω
amplifiers but the speaker out is fixed at 8
Ω
. 4
Ω
and 16
Ω
cabs is usually safe for modern amps.
Can I crank my Marshall Superlead into it?
Yes, but I suggest that you remove a pair of output tubes if you intend to run it at full tilt for an
extended period.
Why not add a fan as other manufactures?
There are several reasons but an added fan will affect impedance and also add noise.
It would also make the unit larger, which had to be taken into consideration.
Is this unit safe to use?
Yes, if you make sure that your amp and speaker is matched to the ATTENUATOR. Modern
amps are much more tolerant to impedance mismatch so a 2-1 mismatch should be safe. If
you own a vintage 60’s amp and intend to crank it, I suggest that you do not mismatch.
Are there any other drawbacks to impedance mismatch?
Yes, even if your amp can handle it the tone and feel of your amp might change.
