peavey classic 50 50 channel 1 resonance and presence not working
peavey classic 50 50 channel 1 resonance and presence not working
I recently bought a 50 50 power amp to use with my bass rig , it sounds amazing running my sans amp into it , I use it in 100w mono mode, my problem is the resonance and presence controls on channel one whether in mono or stereo mode seems to have no effect when turning them , where on channel 2 it makes a big difference, any help would be appreciated on what could be the cause of this, I have a bit of knowledge on tube amps , any advice would help, thanx I'm advance
-
- Member
- Posts: 31315
- Joined: Fri Sep 12, 2008 3:10 pm
- Location: The Mountain Retreat [Cincinnati Ohio]
Re: peavey classic 50 50 channel 1 resonance and presence not working
1) De-Oxit on controls
OR......
2) Replace controls
OR......
2) Replace controls
PAF Classic Series Tube Kit.......Created By Classic30inCincy
Majic Mojo Tradename..........Created By Classic30inCincy
Graduate Of Joe Friday / Dragnet School Of Correspondence
Doctorate Degree Diplomacy From Royal Order Possum Lodge
Re: peavey classic 50 50 channel 1 resonance and presence not working
so I spray the pots with switch cleaner aerosol ?, the pots are not scratchy at all though
-
- New Member
- Posts: 5
- Joined: Tue Apr 04, 2017 2:44 pm
Re: peavey classic 50 50 channel 1 resonance and presence not working
according to the manual (found here: https://assets.peavey.com/literature/ma ... 301636.pdf), when the amp is run in Mono mode, only one set of controls will work.
"CHANNEL 2 LEVEL CONTROL (10)
Controls the output level of channel 2 when in stereo mode. Maximum output level is obtained with the level
control rotated fully in a clockwise direction.
NOTE: Not operational when in mono mode.
RESONANCE CHANNEL 2 (11)
Used to fine tune speaker enclosure low frequency response by varying the damping factor of channel 2 at
low frequencies.
NOTE: Not operational in mono mode.
PRESENCE CHANNEL 2 (12)
Used to fine tune speaker enclosure high frequency response by varying the damping factor of channel 2 at
high frequencies.
NOTE: Not operational in mono mode.
MONO/STEREO SWITCH (17)
Used to select mono or stereo operation of the amplifier.
NOTE: When in mono mode, only channel 1 inputs, outputs, and controls will function. Use channel 1 impedance selector, level, presence, resonance, and line out controls. Make sure BOTH standby switches are on (both green LED’s are illuminated)."
Hope that helps!
"CHANNEL 2 LEVEL CONTROL (10)
Controls the output level of channel 2 when in stereo mode. Maximum output level is obtained with the level
control rotated fully in a clockwise direction.
NOTE: Not operational when in mono mode.
RESONANCE CHANNEL 2 (11)
Used to fine tune speaker enclosure low frequency response by varying the damping factor of channel 2 at
low frequencies.
NOTE: Not operational in mono mode.
PRESENCE CHANNEL 2 (12)
Used to fine tune speaker enclosure high frequency response by varying the damping factor of channel 2 at
high frequencies.
NOTE: Not operational in mono mode.
MONO/STEREO SWITCH (17)
Used to select mono or stereo operation of the amplifier.
NOTE: When in mono mode, only channel 1 inputs, outputs, and controls will function. Use channel 1 impedance selector, level, presence, resonance, and line out controls. Make sure BOTH standby switches are on (both green LED’s are illuminated)."
Hope that helps!
Re: peavey classic 50 50 channel 1 resonance and presence not working
So try also cleaning the stereo/mono switch contacts.