The main power transformer (toroid) part: 150-r1107010in the TSS-SUB4000 is not mounted in the amplifier inside the amp cover, but mounted in the cabinet in a separate location. To replace the power transformer, it is necessary to remove the woofer from the cabinet. The mounting bolt and transformer itself is mounted on an internal brace; both are accessible through the woofer opening.
Troubleshooting:
To keep the circuit “live” while exposing the amplifier components, the amplifier cannot completely be removed and powered up outside the cabinet due to the power connections to the externally mounted transformer. Instead, an alternate method is to leave the amp cover in place and remove the four Phillips screws holding the amp ass’y to the amp cover. Then the amplifier can be partially removed for access, while maintaining the power connections. Unplugging the LED connection (red/black wires) at the PCB plug will allow the amp to be removed even further.
POWER AMP-SCHEMATIC {Click on the Schematic to Zoom In}
Specifications
Frequency Response 28Hz – 150Hz (–3dB) 24Hz – 180Hz (–6dB)
Maximum Amplifier Output 400 watts RMS (20Hz – 150Hz with no more than 0.1% THD)
Crossover Frequency 150Hz, 12dB/octave
Driver 12" (305mm) MMD®
Dimensions (H x W x D) 17-1/2" x 17-1/4" x 11-1/8" (445mm x 438mm x 283mm)
Weight 48 lb (21.8kg)