BK Electronics Pear Drop DA 180 User manual

Stereo Amplifier
DA 180
Pear Drop

Contents
(1) Cautions
(2) Introduction and Features
(3) Wiring Configurations
(4) Controls and functions
(5) Specifications

To avoid the risk of electric shock do not remove lid from the amplifier. If
this unit fails or has a serious deterioration in performance then refer
repair to the dealer where you purchased the unit.
1)Please read these instructions carefully and keep them for future reference.
2) Please heed all warnings.
3) Please follow these instructions.
4) Do not use this apparatus near water or allow to get wet.
5) Keep well ventilated.
6) Do not install near heat sources such as radiators, stoves etc.
7) Protect the power cord from damage.
8) Disconnect from the power supply during lightning storms or extended periods of
inactivity.
9) Refer all servicing to qualified service personnel. If the unit develops a fault of any
sort please refer repair back to your dealer.
10) Do not force the controls or switches further than their normal stops.
11) Clean with a dry soft cloth. If you do use polish, then apply polish to cloth not
directly to the unit.
Caution:
(1)

Introduction
The Pear Drop DA 180 is a state of the art digital amplifier that offer
exceptional audio quality and power in an extremely small footprint.
The built in over current protection has two modes. During transients into
the current limit threshold it allows constant output current but if this
condition persists it goes into burst mode. This guarantees that the
amplifier does not create audio holes during heavy listening but still
effectively protects it during short circuiting. The thermal protection sensor
is connected to the tab of one of the output devices giving a very fast
detection and shut down should over-load occur.
The amplifier technology in the DA 180 is a globally modulated self
oscillating topology which controls the signal directly at the output. The
flat, load independent frequency response, high bandwidth, low distortion,
low noise and perfect transient response makes it suitable for the most
demanding applications. This state of the art amplifier design is combined
with a robust, low EMI, ultra efficient power supply giving the total system
an efficiency of around 85% at full power.
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2x90Wrms/4ohm @ 1% THD
1x180W/8ohm bridged mode @ 1% THD
2x50Wrms/8ohm @ 1% THD
Residual noise <40uVrms unweighted
20Hz – 35kHz +/- 0.5dB ( -3dB @ 60kHz )
Cross Talk 80dB @ 1kHz and 1W
THD+N <0,05% up to 75Wrms/4ohm @ 6,67kHz
<1W stand by mode when delivering 150mW to signal sensing circuitry
Over current protection
Over temperature protection
Over voltage protection
Features
(2)

LEFT
RIGHT
LOUDSPEAKERS INPUTS
+VE
+VE
-VE
-VE
To Source
+VE -VE +VE -VE +VE -VE
Stereo Configuration
LEFT
RIGHT
RIGHT
LEFT
LOUDSPEAKERS INPUTS
+VE
-VE
+VE -VE +VE -VE
LEFT
RIGHT
LEFT
OR
RIGHT
To Source
LEFT
OR
RIGHT
Monoblock Configuration (Bridged)
(3)
“Y” Connector

LOUDSPEAKERS INPUTS
+VE
+VE
-VE
-VE LEFT
RIGHT
PowerVolume
DA 180 On Protect
1 2 3
456
7810
9
1) Power Inlet
2) Right Speaker Terminals
3) Right Input RCA Socket
4) Fuse tray with spare fuse
5) Right Speaker Terminals
6) Left Input RCA Socket
7) Volume Control
8) On indicator
8) Protect indicator illuminates when there is a fault present
10) Manins Powr On / Off Switch
Controls and Functions
(4)
Stereo Amplifier
Pear Drop

This product is subject to Directive 2002/96/EC of the European Parliament and the Council of the European
Union on Waste of Electrical and Electronic Equipment (WEEE) and, in jurisdictions adopting that Directive, is
marked as being put on the market after August 13, 2005, and should not be disposed of as unsorted
municipal/public waste. Please utilise your local WEEE collection facilities in the disposition and otherwise
observe all applicable requirements.
WEEE Consumer Notice
Specifications
Power
Switching Freq.
Idle Power
Bandwidth
Efficiency
Input Volts
Input Impedance
Dimensions
Weight
Mains Input
50W RMS into 8 Ohms
90W RMS into 4 Ohms
180W RMS into 8 Ohms (Bridged)
460kHz Typ.
8W
60kHz Typ.
84%
200mV
10K Ohms
255L x 131W x 50H mm
750g
220 - 240V 50Hz
(5)