7
General
Thank you for purchasing DAS EP series power amplifiers. They have been designed with the lastest and most advanced
Class D technology. As a result, a family of multi channel high power, high efficiency amplifiers has been created for
medium/big sized professional applications.
Features
- 4 channel high power amplifiers
- Class D, switching power supply
- Integrated voltage limiters, adjustable by the user
- Independent Volume controls per channel
- Power On led and dual color Signal/Clip leds per ouput channel
- Thermal protection
- Over current protection
- Built in DC protection
- Short Circuit protection
- Stereo (low impedance) and Bridge (high impedance) modes
- Speakon NL4 connectors
FRONT PANEL
INTRODUCTION
A) Power Switch
Turns the amplifier on (“I” position) and off (“0” position).
When the amplifier is turned on the “power” LED will light
up in green.
B) Channel Gain Controls
Four level potentiometers are located at the front panel
providing individual channel attenuation. Level range
varies from - 50dB to 0dB. The 12 o´clock position equals
to -25dB attenuation.
C) Front Covers with dust filters.
there are two front covers located, each one located on
one side of the front panel. To loose the front cover use the
M3 thumb screws located underneath the amplifier
handles. This allows removal of the dust filters for cleaning
and maintenance.
D) Mute Leds
When the amplifier is turned on, mute leds will appear
active (red) while the amplifier is doing an auto test. After
three seconds the MUTE leds will be deactivated.
E) Bride Mode
When active (rear panel dips), the led will light up in green.
Remember not to use 4ohm loads in Bridge mode.
F) Temperature and Load indicators
G) Channel meters
Each output channel is equipped with a signal meter:
EP series /
User’s Manual
A
B
C
D
E
Temp Warning (Flashing Yellow)
Temp Mute (Permanent Yellow)
Output Muted (Permanent Yellow)
Load fault
F
Hi-Z/open load detected (Yellow)
Amp Peak limiter active (Red)
Current Peak limiter active (flashing Orange)
Very Low impedance / Short circuit (Permanent MUTE)
All EP series models are equipped with protection circuits
that detect continuous very high frequency content in the
input signal. The detection starts from 10 kHz on. If these
type of signals are detected in the amplifier, the output
will be muted for 6 seconds before re-measuring.
Once no continuing very high f requency signal is
detected, the output un-mutes and returns to normal
state.
This feature recognizes that continuous full-scale VHF
signals do not appear in “natural” sources such as music.
Any such signals can therefore be considered as a fault
when present. VHF protection is essential in avoiding
damage to high frequency drivers.
The VHF protection is NOT a limiter and does not alter the
amplifier’s frequency response. It is implemented solely
to detect continuous VHF content. The amplifier will
always pass VHF peaks at full power, with no effect on
musical “transients”.
G
