Polk Audio Powered 8” Subwoofer PSW111 Turns On but For Parts or Repair. Powers on, but no sound. Only a “heartbeat sound”. Link to more specifics about model: https://www.crutchfield.com/S-9F78bu27cTN/p_107PSW111B/Polk-Audio-PSW111.html Here is a link to a similar issue and possible fix. https://forum.polkaudio.com/discussion/175654/polk-psw111-sub-woofer-heartbeat I am not an audio technician and not comfortable replacing capacitors.

Polk Audio 300W PSW505 Subwoofer Amplifier/ Plate Amp *For Parts Or Repair Only*.

martin audio subwoofer. Features: Compact self-powered, portable two-way system • 1300W of Class D amplification • Global power supply with PFC (Power Factor Correction) • Onboard DSP with rotary control interface • Multi-function display for metering, control and function selection • Three-channel mixer • Three-band channel EQ, plus HPF (Ch1/2) • Independent LF and HF peak and RMS limiters • Three speaker mode and voicing presets • Bluetooth® control and streaming option • Durable plywood enclosure • User-rotatable 80° x 50° HF horn • Vertical and horizontal mounting options • Symmetrical multi-angle enclosure for PA or stage monitor use • Screw-free, cloth-backed steel grille • Integral ergonomic handles • Mounting options include pole-mount, wall bracket and flying inserts Every Martin Audio product is built to the highest manufacturing standards and rigorously tested to ensure that it meets the performance criteria specified in the design.ACOUSTICSTYPE Compact self-powered two-way systemFREQUENCY RESPONSE (5) 62Hz – 20kHz ±3dB, -10dB @ 50HzDRIVERSLF: 12” (300mm)/2.5” (63.5mm) voice coil, ferrite motor systemHF: 1” (25mm) exit/1.7” (44mm) voice coil, polyimide dome compression driverMAXIMUM SPL (9) 122dB continuous, 128dB peakDISPERSION (-6DB) 80° H x 50° V (user-rotatable)CROSSOVER 2.3kHz passiveMODULEAUDIO IN/OUTINPUT CONNECTORS 2 x female XLR/ 1/4” jack comboMIC/LINE INPUT IMPEDANCE 8 kO balanced1/4” JACK TS INPUT IMPEDANCE 1 MO unbalancedMIX OUTPUT CONNECTOR 1 x male XLRMIX OUTPUT IMPEDANCE 600O balancedINTERNAL PROCESSINGINPUT CHANNEL EQ 3-band on each channel plus HPF (Ch1/2)SPEAKER EQ 3 speaker mode/voicing presetsPROTECTION LF and HF Peak and RMS limiting, amplifier thermal protectionAMPLIFIER MODULETYPE 2 channel switch-mode, class DPEAK OUTPUT POWER 1300W total1000W LF, 300W HFAVERAGE EFFICIENCY 89%COOLING External convection cooledMAXIMUM AMBIENT TEMPERATURE 35°C (95°F) for full outputPOWER SUPPLYTYPE Switch-mode, fixed frequency with PFCAC INPUT OPERATING RANGE 100-240V ~ AC, 50 - 60HzPOWER FACTOR > 0.98NOMINAL POWER CONSUMPTION 550W MaxMAINS CONNECTOR 3-pin IECMECHANICALENCLOSURE Multi-angle birch/poplar plyFINISH Black textured paintPROTECTIVE GRILLE Black perforated steel with scrim cloth backingFITTINGS 17 x M8 inserts, pole-mount socket, 2 x pocket handleDIMENSIONS (W) 358mm x (H) 574mm x (D) 318mm(W) 14.1in x (H) 22.6in x (D) 12.5inWEIGHT 18kg (40lbs)

Polk Audio 300W PSW505 Subwoofer Amplifier/ Plate Amp *For Parts Or Repair Only*.

FOR PARTS - Polk Audio PSW110 PSW-110 Powered Subwoofer Amplifier Board FOR PARTS Could not test the unit, Removed the Board and selling it ASIS FOR PARTS OR NOT WORKING Assume it needs repair Comes with mounting Screws

-DOES NOT POWER ON -INCLUDES POWER CORD -IS ALSO MISSING ONE OF ITS LITTLE LEGS -PARTS OR REPAIR ONLY -FREE FEDEX SHIPPING -THANK YOU!