DS1625 FRONT PANEL
On Indicator:
This green LED remains lit when AC power is applied to the unit.
Signal / Peak Indicator:
This 2-color LED indicates the signal level for the amplifier. When the LED is green, the amplifier has signal
(above -30dB).
When the LED is red, the amplifier signal is clipping
(maximum power).
CAUTION:
Signal levels should be adjusted
to avoid clipping. Clipping can cause severe distortion, over-temperature conditions, and even loudspeaker damage.
NOTE:
Signal /
Peak indicators will turn off during Temp / Fault conditions (see Temp / Fault Indicators below).
This indicator also appears on the rear
panel.
Temp / Fault Indicator:
This red LED indicates over-temperature and output fault conditions for the amplifier. When the LED
remains lit, the amplifier has an over-temperature condition. When the LED is flashing, the amplifier has an output fault condition.
Either condition will temporarily de-activate the amplifier, causing the Signal / Peak LED to turn off as well. The amplifier will attempt
to self-reset once the over-temperature or output fault condition is resolved. This indicator also appears on the rear panel.
CAUTION:
The DS1625 is cooled by a variable speed fan, which exhausts warm air from the left side panel. To allow proper
ventilation, an un-obstructed clearance of at least 0.75" must be maintained along the left side panel of the DS1625.
REAR PANEL
Input:
This plug-in barrier strip provides the line-level input to the amplifier. For unbalanced input, wire high (+) and ground
(
)
. For
balanced input, wire high (+), low (-), and ground
(
)
.
NOTE:
The UNBAL / BAL switch must be in the appropriate position (see below).
Level:
This screw-driver adjustable control determines the level of input signals allowed into the amplifier. Level provides a gain range
from 'off'
(min.)
to 'unity'
(max.).
The Level control is factory set for -20dB of gain, which will produce maximum output power with input
signal peaks of +20dBu. For best performance, first adjust the source signals for optimum (maximum) levels, then adjust the amplifier
Level control for the desired volume.
