Additional Setup Information
Firstly, unlike a lot of mic-pre's, the yellow LED is not a warning that the output of the unit is
clipping. It is purely there to indicate +8dB output level.
The DRS units were originally fitted with a Green LED (0dB) and a Red LED (+8dB), but we
found that the Red LED was making users believe that the unit was clipping (Red = danger =
clipping) which was NOT the case, so this was changed to a Yellow LED in later models so
that users tended to not regard it as a "Clipping" LED.
You can turn the output knob all the way up to maximum and still be sure the output of the
unit will not clip. The amount of headroom on both the input AND output stage is HUGE!!!
There will never be a time when you can't get a hot enough output, only occasionally too hot
an input (then you just simply turn down the input gain knob (in Mic mode), or switch to line
mode.
The best thing to do is ignore the Yellow LED if you want a very hot output,
and set the unit up as follows:
When the DRS is switched into DI mode, the Mic/Line Sensitivity switch and
Mic/Line push button become disconnected and are not used in DI mode.
For Microphone Input:
1: Set the output knob to about the 2 'O' Clock position. (or just over half-way)
2: Set the mic input level so that the green LED is just beginning to come on solidly. (this
indicates 0dB OUTPUT level)
3: If the red (or yellow) LED is coming on (+8dB OUTPUT level) and you think the unit is
clipping it is NOT the output stage, just step the input gain knob back one click.
4: Turn the output knob up to the level you would like (If you wanted a very hot output
level, ignore the red (or Yellow) LED).
I'll try to explain a little more.............The LED's on the front panel are there to give you an
indication of output level only (0dB and +8dB, corresponding to 4 and 6 on a PPM Meter),
this is because most semi-pro (and indeed, a lot of Professional!) equipment cannot handle the
full output of the DRS-Q4M mk2, and the LED's give you a good indication of output level so
that you can determine where in the audio chain you may be getting clipping. They do NOT
indicate that the DRS-Q4M mk2 is clipping.
The only place you might get clipping on the DRS-Q4M mk2 is in the INPUT stage (although
the headroom on the INPUT stage is very high!)........ So if you believe the DRS-Q4M mk2 IS
clipping, just turn the INPUT down, but the OUTPUT can be turned up to maximum if you
wanted.
The DRS-Q4M mk2 is capable of handling a huge input range, from -70dB right up to 0dB
(Mic mode), and STILL have 10dB of headroom. The output stage can easily deliver +25dB!!!
Please don't automatically believe the DRS-Q4M mk2 is clipping!
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