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A�enua�on Fine Adjustment

Instruc�ons:

You are able to fine tune the amount of a�entua�on between posi�ons 1 and 2,  posi�ons 2 and 3, 

and posi�ons 3 and 4 by opening the Air Brake up.* A�enua�on levels between 0 and 1 and 4 and 

Bedroom are fixed se�ngs and can not be adjusted. 

1. Unplug amplifier from the AC outlet.

2. Unplug Air Brake from speaker cab and amplifier.

3. Use a 1/4” nut driver or ratchet to remove the back panel.

4. Make note of where the a�enuator clamps are for posi�on 2, 3, and 4 (Figure A). 

Use a fine marker 

or pencil to mark both sides of the clamp for easy adjustment back to stock values.

Figure A

5. Using a phillips head screwdriver, loosen the clamps so that they may freely move from le� and right 

on the resistor (Figure A).

*Dr. Z Amplification is not responsible for any damage to your equipment by disassembling your Air 

Brake. It is the doctor’s opinion that these adjustments are subtle and stock values were picked for a 

reason, so if you have any concern with your ability to follow these instructions then it’s best to leave 

your equipment alone.

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