Wiring; Powering Up; Input Trim Values - Wharfedale Pro DW-Series Operating Manual And User Manual

WIRING

Connecting sources with unbalanced outputs requires bridging PIN1 and PIN3 of the power amps
input connectors or removing PIN3, if this is not done hum and HF interference may occur.
Use of high quality balanced cables (with 2 conductors for audio signal plus separate shielding)
is recommended as most mixing consoles have balanced outputs. This type of interconnect will
greatly reduce the chance of interference, noise or hum.
Observe the table above the Speakon™ outputs that shows the correct terminal connection for the
respective output modes. When connecting Speakon™ cables ensure that they are securely locked
into place by turning clockwise, and ensure that the cables are fully unlocked before you attempt to
remove them.

POWERING UP

The DW Series is simple to install and operate.
When powering up your DW-Series amplifier make sure that the input trim controls for both
channels are at the lowest possible setting. Always ensure that you establish a safe routine to
power up all of the stages in your rig, starting from source through to amplifier.
Transient voltages from powering up source equipment can damage your speakers and hearing
if your amplifiers are already turned on. Always ensure that the system amplifiers are powered up
last.

INPUT TRIM VALUES

With input trim settings below 4 you will not be able to achieve full output power without clipping the
input stages.
Input Level (dBu)
Volume Full rated power
THD+N=0.5%
10 +1 dBu
9 +4 dBu
8 +8 dBu
7 +12 dBu
6 +16 dBu
5 +19 dBu
4 +21 dBu
3 > +22 dBu
2 > +22 dBu
1 > +22 dBu
0 -----
Full rated power
THD+N=1%
+4 dBu
+6 dBu
+10 dBu
+15 dBu
+20 dBu
+22 dBu
> +22 dBu
> +22 dBu
> +22 dBu
> +22 dBu
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DW
Series
6