- Operating Instructions DT 250 DT 252 Professional Headphone DT 280 DT 290 DT 290 V.11 DT 291 PV DT 294 PV DT 294 V.11 Headset

Operation

The headphones are fully adjustable and should be

positioned for the best fit over the ears. This will give maximum

long-term comfort and will minimise sound leakage or spill.

Convention states that with the DT 280 / DT 290 / DT 290 V.11 /

DT 291 PV / DT 294 PV / DT 294 V.11 the boom microphone is

placed over the left ear. The microphone can be used from the

right ear, but if true L and R headphone status needs to be

maintained, it will be necessary to make a custom lead with the

headphone connections reversed (swap brown/orange on the

left side and red/blue on the right side). For connections refer

to ”Block Diagram”.

1. Lift cap with

small screwdriver.

2. Loosen screws and

remove microphone holder.

V.11-Version of DT 290 /

DT 294:

Adjustment of the built-in

microphone pre-amplifier.

3. Turn the

microphone holder 90°.

Tighten screws and put

cap on again.