Description
Pre-owned Weber MiniMASS Attenuator, in very good condition, attenuator, no box included.
This attenuator has a main volume knob and 3-position treble compensation switch which affect the signal to the speaker. The line out signal is dependent on your amplifier settings.
DO NOT USE THE MINIMASS WITH A SUPER REVERB.
If you have a Tweed Bassman or Super Reverb, you should get the Mass 100 (The Mass 100 has the proper power handling as well as the 2Ω setting you need)
Impedance selector for 4, 8, 16 ohms, 3-position treble compensation switch, MASS bypass switch, unbalanced line out. The MiniMASS employs an actual speaker motor for realistic interaction between the attenuator and the output circuit of the amplifier. The attenuation is continuously adjustable from about -3dB to over -50dB.
By turning the speaker control to minimum (maximum attenuation), the unit may be used as a dummy load for testing or for DI use.
5.5” x 5.5” footprint (add 1” in front for knob). 3.75” tall. 3.35 lbs basic.
Line Out jack has no volume control and is dependent on your amp volume setting, but we do offer a Line Level Volume Control.
There is an option to add a headphone output, and this adds an extra jack with an independent volume control. For the footswitch option, we install a relay which requires 7.5V external power. This only powers the relay – the attenuator itself is still passive. We include the power plug but the footswitch itself is not included. You can use any latching footswitch, including one incorporated in a multi-effect floor unit.
IMPORTANT NOTE ABOUT HIGH GAIN AMPS*: *if you have a Fender or similar amp, and play with cleaner tones, this part does not apply to you. High gain amps such as Marshall or clones (with heavy distortion) are hard on attenuators. Unfortunately, an amp’s volume dial is not a good indicator of how much power is being produced. Many amps can reach full power at 3 or 4 on the volume dial, so it is a good suggestion to get an attenuator with 4x the power handling. For example, if you have a 50w high gain amp, you should opt for the MASS 200. If you have a 100w amp, you should still go with the MASS 200 but you should not crank the amp.
1) do not attenuate too far down. this puts a lot of power through a very small section of the volume rheostat which can cause it to fail
2) also do not turn your amp all the way up. even if you’re just knocking a little off the top with the attenuator, it’s a good idea to keep the amp somewhere in the middle at most. it’s best to find the lowest volume on the amp that is the acceptable tone to you, and then use the attenuator to bring it the rest of the way.