Diamond D1 250.2 Installation Manual page 10

Installing the Remote Level Controller
The D1 400.1 comes packaged with a remote level control. This allows you to control the level by attenu-
ating the amplitude or increasing (up to the maximum set-point) of the amplifier's input gain control. This
control does not add additional bass boost, it simply allows you to control the level to suit your tastes.
1)
Locate a position in the front of the vehicle where this will be easy to
reach. Common locations are on, in, or under the dash, in the center
console, or in the glove box.
2)
If you will "surface mount" the unit, attach the bracket using the sup-
plied hardware to your chosen location (See illustration). Proceed to
step 4
3)
If you will be "flush mounting" the unit, you must remove the knob
and fascia assembly from the housing first. Then proceed to cut an
opening measuring 2" wide (5cm) x 5/8" high (2.2cm). You will need
to allow about 1 inch (2.5 cm) of clearance behind the opening for
installation and cable access. (See illustration)
4)
Route the telephone style data cable back to the amplifier location and
connect into the remote level port. Test to make sure the operation
is functioning.
Get Ready to Listen!
Perform a final check of the completed system wiring to ensure that all
connections are accurate. Check all power and ground connections for
frayed wires and loose connections which could cause problems. Install
in-line fuse near battery connection at this time. Prepare to make some
adjustments to fine tune your audio system for optimum performance.
Adjustment of Input Gain
To adjust the gain setting, turn the amplifier gains all the way down (counterclockwise). Turn the source
unit volume up until distortion is audible and then turn it down a bit until the distortion is inaudible. This
will be NEARLY full volume on most source units, perhaps one
or two "clicks" down from maximum volume. Next, increase
the amplifier gain setting until adequate volume is achieved.
NOTE: Ideal signal to noise and dynamic range are achieved
with the gain at minimum. Most users find adequate gain
and volume is achieved at about halfway in the adjustment
range. Avoid setting the amplifier gain very high as noise and
distortion will increase significantly. For a more in depth level
setting (gain adjustment) procedure, visit the DAT website at
www.diamondaudio.com
10
For more wiring options, see the support section at www.diamondaudio.com
Connection to Amplifier
Adjusting the Input Gain
In-dash Mount