Great tip on the date to get the correct pot. I have an RNX 2450 and the pots are shot, so bad they really peak the speaker like crazy
@ericlopez4615
Жыл бұрын
Did I miss something? When did you replace the pots?
@tommelle9497
2 жыл бұрын
Great video! I have one of these and the gain POTs were removed and resistors tied together. I suppose that means the amp is at unity gain and will go full blast if I power it up. Is there anything that can be done?
@deepblueharp
2 жыл бұрын
Either replace the pots or control the gain to the amp. You could feed the signal to a small mixer to control the signal gain to the amp. It would be still be easier to replace the pots.
@johnmiller4641
Жыл бұрын
I have the same amplifier and if adjusting the gain the subwoofer made a strange sound. The subwoofer did not seem to play correctly after that. Is it possible the subwoofer was ruined due to bad pots?
@deepblueharp
Жыл бұрын
No, bad pots will not cause the subwoofer or speakers to fail. However, to determine what is going wrong, the amplifier would need to be checked out by a technician. There may be some other failure inside the unit: thermal/mute circuit, op-amps, transistors, etc. It would be unlikely if any failure inside the amp caused damage any connected speakers. Solid State units are highly susceptible to voltage spikes that come in from the AC plug. If this amp suffered a voltage spike, chances are that the sub did also. This means the sub failed from the same type of event (voltage spike) but independently from the amplifier. Unpowered speakers are less prone to voltage spikes because the amp will fail first and the coil in an unpowered speaker is tolerant of voltage spikes. Voltage spikes kill powered speakers because they have solid state circuits.
@johncuria
Жыл бұрын
I have constant problems with the gain pots on multiple QSC amplifiers. Sound cuts out during adjustment.
@deepblueharp
Жыл бұрын
I work on older vintage amps and the pots are rarely an issue. However, the QSC pots are a chronic repair problem. Modifying the QSC for a better quality pot may be worth the effort. You''ll need to buy 16mm diameter pots. Good luck
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