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General| Type | Powered Subwoofer |
|---|---|
| Power Output | 250 Watts RMS |
| Frequency Response | 30Hz - 150Hz |
| Impedance | 8 Ohms |
| Sensitivity | 90dB |
| Enclosure Type | Bass Reflex |
| Driver Size | 12 inches |
Safety precautions for servicing the amplifier, including potential hazardous voltage.
Key technical specifications including power, frequency, phase, driver size, inputs/outputs, and dimensions.
Gain, Phase, Crossover controls for audio adjustment and tuning.
LED indicator and the main power switch.
Low Level Inputs, AC Plug, High Level Inputs, and Fuse.
Diagram illustrating the signal path through the subwoofer's internal stages.
Identifies major components like Input Buffer, Gain Stage, Overdrive Management, and Output stages.
Lists and visually identifies all parts of the subwoofer cabinet assembly.
Details part numbers and quantities for cabinet components.
Step-by-step instructions for safely removing the amplifier assembly.
Step-by-step instructions for safely removing the woofer from the cabinet.
Procedures for bias and audio performance tests.
Critical safety measures to follow when working on the amplifier.
Lists required equipment and shows connection diagram for testing.
Steps for testing basic operational functions of the unit.
Procedure for testing frequency response using a sweep generator.
Steps to test the driver's mechanical and electrical integrity.
Capacitors, diodes, transistors, resistors, and ICs for the power supply.
Components for the linear board, including capacitors, diodes, resistors, and ICs.
List of components for the high-level input board.
List of components for the line filter board.
Lists components for the LED board and general miscellaneous parts.
Lists components found exclusively on the 230V model.
Details the main carton and protective foam inserts for shipping.
Lists survey card, warranty card, owner's manual, and AC power cords.
Diagrams for TL084 Quad Op Amp and LM324N Quad Op Amp.
Diagram for the MOC3012 Optocoupler.
Diagram for the UC3842N PWM Controller.
Layout of components on the Power Supply PCB's component side.
Layout of components on the Power Supply PCB's solder side.
Layout of components on the Main PCB's component side.
Layout of components on the Main PCB's solder side.
Component and solder side views of the AC Power PCB.
Component side view of the Shield/LED PCB.
Component and solder side views of the HL Shield PCB.
Schematic for the Line Filter Board.
Schematic for the Low Level Input Board.
Schematic for the Shield/LED Board.
Schematic section covering Pre-Amp, Compressor, Gain, Limit Detect, Limiter.
Schematic section covering Bias, Rect Signal, Buck Regulators.
Schematic section covering Mute, OVP, Buckreg.
Part 1 of the power supply schematic, covering pulse width modulation and voltage regulation.
Part 2 of the power supply schematic, covering low-level regulators and voltage monitoring.
Schematic diagram for the High Level Input Board.
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