PS-2A is much too loud

The PS-2A no longer controls my Marshall 1987X below 94 decibels. Before, I could play it at room volume without any problems. What could be the problem? The PS-2A is really much too loud.

Hello Tobi and welcome to the community!

Are you using your PS-2A mic-ed in a room? Are these decibel sound pressure levels? I don’t have a good feel for absolute volume level in terms of dB so you will have to help me out.

There are a few things to check:

  1. Have you accidentally pressed the front panel level control? You can get a volume cut by toggling that.
  2. The Depth and Presence controls give a subtle change in volume
  3. So do the reactive load toggle switch.
  4. Could the volume knob moved – try adjusting that (I’m sure you must have done this already!)

That pretty much covers the options on the PS-2A.

It could also be that your amp is sending more power. Might it need a re-bias?

There are some ideas to try. Let me know how you get on.

Hi Dan, thank you very much for your help. I measured the volume of the amplifier (in conjunction with the PS-2A) with a volume meter. In Germany, the volume is measured in Decibel. The 94 decibels I mentioned are far too loud to be in the same room with the amplifier and the PS-2A at the same time.

On your questions:

  1. Have you accidentally pressed the front panel level control? You can get a volume cut by toggling that.
    Answer: The front level panel control is pressed. It is on mode ‘Hi’.

  2. The Depth and Presence controls give a subtle change in volume.
    Answer: The Depth and Presence controls are completely down (turned to the left).

  3. So do the active load toggle switch.
    Answer: Which toggle switch do you mean by this? The switches for Edge and Deep? If so, these two switches are on Brite and Warm (in the middle).

  4. Could the volume knob moved – try adjusting that (I’m sure you must have done this already!)
    Answer: Of course I did. :wink:

  5. It could also be that your amp is sending more power. Might it need a re-bias?
    Answer: I tested my Deluxe Reverb and my 1987X. That would be a big coincidence if both of them were to send more power.

What else could the problem be? As I said, my amplifiers (in conjunction with the PS-2A) are much louder than they were before.