The Blaupunkt BQA 120 Quadro amplifier is a compact car audio amplifier designed to power small-to-medium car speaker systems with clean, reliable output. It’s commonly used for upgrading factory stereos, driving full-range speakers or small subwoofers in single-vehicle installations, and for quad-channel setups where four outputs are needed from a small footprint.
| Terminal | Function | |----------|----------| | B+ | +12V battery (4–8 AWG wire) | | GND | Chassis ground (short, same gauge as B+) | | REM | Remote turn-on from head unit (blue/white wire) | | CH1/2 Input | RCA from HU front output | | CH3/4 Input | RCA from HU rear/sub output | | CH1+ / CH1- | Front left speaker (+) / (-) | | CH2+ / CH2- | Front right speaker | | CH3+ / CH3- | Rear left speaker | | CH4+ / CH4- | Rear right speaker | blaupunkt quadro amplifier bqa 120 manual new
To get the most out of your Blaupunkt Quadro Amplifier BQA 120, here are some tips and tricks to keep in mind: Blaupunkt Quadro Amplifier BQA 120 — Detailed Guide
This amp is compact, bridgeable, and suitable for: One channel not working: 4
The Blaupunkt BQA 120 Quadro Amplifier is a classic four-channel car audio component known for its reliable performance and "vintage" German engineering. Whether you have recently acquired a New Old Stock (NOS) unit or are maintaining a legacy system, this guide provides essential specifications and installation details based on the original operating manual. Technical Specifications
Blaupunkt BQA 120 Quadro Amplifier is a vintage 4-channel Class A/B powerhouse, famously used in premium audio setups for 90s-era German vehicles like BMW and Volkswagen. Known for its compact footprint and reliable "Quadro" output, this amplifier is a sought-after piece for retro car restoration enthusiasts. Technical Specifications Amplifier Class : Class A / B for high-fidelity sound reproduction. Power Output : 4 x 30 Watts. RMS (Sinus) Power : 4 x 24 Watts at 10% harmonic distortion (20–20,000 Hz). Total Harmonic Distortion (THD) : 0.05% at 1 kHz / 1 Watt into 4 Ohms. Frequency Response : Ultra-wide range from 10 Hz to 90,000 Hz at 3 dB. Signal-to-Noise Ratio : > 90 dB for clear, low-noise performance. Connectivity