Blaupunkt BQX 300 - Product Description; Range of Application and Switching Possibilities; Fitting Instructions; Car Radios with RCA Socket

Technische Daten
Max. Power: 4 x 75 W, gebrückt 2 x 150 W
oder 2 x 75 W + 1 x 150 W
Sinus bei 0,01% Klirr (20-20 000 Hz) : 4x 50 W, gebrückt 2 x 100 W
oder 2 x 50 W + 1 x 100 W
S/R - Abstand: > 100 dB
Frequenzbereich: 10 - 80 000 Hz ( -3 dB )
Übersprechdämpfung: >= 60 dB
Bordnetz - Störunterdrückung: typ.70 dB
Schutzschaltung gegen Kurzschluß und Übertemperatur
Eingänge: DIN (8 pol.) und Chinch
Ausgänge: 5 Lautsprecher 4 Ohm und
Aux - Out ( 8 pol. DIN ) zur
Bildung von Amplifierketten
US
Product description
Switchable 4- /3- /2- channel power pack amplifier (class A/B) with
integrated crossover.
Range of application and switching possibilities
Full Range Max. power 4 x 75 watts, bridged 2 x 150 watts
Low Pass 2 x 150 watts Subwoofer cutoff frequency 80 or 120Hz,
switchable.
Slope 18 dB per octave
High Pass 4 x 75 watts Initial incoming frequency 120 Hz fixed
Slope 12 dB per octave
High Pass 2 x 75 watts
+ Low Pass 1 x 150 watts
Low Boost +6 dB switchable, center frequency 45 Hz
Fitting instructions
The amplifier BQX 300 can be connected to car radios with PREAMP
OUTPUT in accordance with DIN 45 326 or with RCA socket.
To form amplifier chains and/or subwoofing, several amplifiers can be
connected via Aux Out.
80 120
f/Hz
dB
0
-10
-20
-30
120
f/Hz
dB
0
-10
-20
-30
on
off
f/Hz
45
dB
+6
0
Notes on Safety
Installation and connection instructions
The negative terminal of the battery must be disconnected during
installation.
Select a suitable mounting place in the car for the BQX 300 (dimensions:
305 x 75 x 175 mm), e. g. at the splashboard, below the dashboard, below
the seats or in the boot. Make sure the selected mounting place provides
for sufficient heat dissipation. Prior to drilling the mounting holes, make
sure that no cables and parts of the vehicle will be damaged. Fig. 1
Route the enclosed positive cable to the battery and connect it. Use cable
ducts at sharp-edged holes.
Screw the enclosed negative cable to an interference-free ground spot
(chassis screw or plate). Do not connect it to the negative terminal of the
battery. The contact area of the ground source must be blank and
lubricated with graphite grease.
Leave ample clearance between loudspeaker cables and other cables
harnesses to ensure interference-free operation.
Use only louspeakers having an impedance of 4 ohms. Observe the
minimum nominal capacity of the selected loudspeakers.
Use loudspeaker cables of between 0,75 mm and 4 mm. Do not connect
the loudspeakers to ground, use only the marked terminals.
Connection with 1 x BQX 300
Full range 4 x 75 watts Fig. 2
2 x 150 watts Fig. 3
Connection with 1 x BQX 300
High Pass 2 x 75 watts + Low Pass 1 x 150 watts Fig. 4
Connection with 2 x BQX 300
High Pass 4 x 75 watts, Low Pass 1 x 150 watts Fig. 5
The setting of the switches CROSSOVER and LOW BOOST depends on
the type of loudspeaker used, the accoustic properties of the car interior
and on personal preferences.
Car radios with RCA socket Fig. 6
When connecting via Cinch sockets, the switching line must be connected.
GAIN ADJ
When connecting Blaupunkt car radios adjust the control button to 2 V.
The Gain Adjust control button can be adjusted in the range of 0.3 V to
2 V. Each mark corresponds to 0.33 V approx. When connecting a car
radio of another manufacturer via AUX-Input, adjust the input sensitivity
according to the details of the manufacturer.
Technical data
Max. Power : 4 x 75 watts, bridged 2 x 150 watts
or 2 x 75 watts + 1 x 150 watts
RMS power at 0,01 %
distortion (20-20 000 Hz) : 4 x 50 watts bridged 2 x 100 watts
or 2 x 50 watts + 1 x 100 watts
Signal- to-noise ratio: >100 dB
Frequency response : 10 - 80 000 Hz (- 3 dB)
Common - mode rejection : > = 60 dB
Noise suppression of on- board
power supply : 70 dB typ.
Circuit breakers for short- circuit and overtemerature protection
Inputs : DIN (8- pin) plus RCA
Outputs : 5 loudspakers 4 ohms as well as
Aux- Out (8- pin DIN) for building up
amplifier chains