Paradigm X-30 High Pass Subwoofer control unit | Reverb
AUDIOCONTROL LC2I 2 CHANNEL LINE-OUTPUT HI-LOW CONVERTER SUBWOOFER CAR CONTROL – ASA College: Florida
Level Controller for the Toyota Switch | OEM Audio Plus
Sub-Woofer Controller
PSB-200 Subwoofer Amplifier with Crossover / Phase Control - 200W – Soundavo
Blue Sky International Star 7.1 Stereo/Subwoofer STAR 7.1 SYSTEM
AudioControl 2-Channel Active Line Output Converter with AccuBASS and Subwoofer Control Black LC2i PRO - Best Buy
Subwoofer Controller Low Pass Filter - Electronic Circuit
Black Series TreVoce12 DSP 12" Active Subwoofer | OSD Audio
Genuine Subwoofer Level Phase Low Pass Frequency Wired Remote Control for AlPINE SWE-815 SWE-1080 PWE-T0800C SWE-1200 Subwoofer _ - AliExpress Mobile
Sony Mobile XS-AW8 8 in. Compact Powered Under Seat Subwoofer with Remote Volume Control | World Wide Stereo
Vintage Carver DPL-33 Surround Sound Processor & Subwoofer Controller for Parts | eBay
PSB-1000DSP Subwoofer Amplifier with RS-232 / IR Remote Control, Dual – Soundavo
JBL Control SB-2 Subwoofer | Sweetwater
Audison SR Series SR 1.500 1000W Mono Amplifier with VCR-S1 Sub Volume Remote Control and a Hertz Dieci Series DBX 30.3 12" Woofer in a Sealed Box - Creative Audio
Pyle Active Down Firing Subwoofer - 10 Inches, Ported Design with High-to-Low Input Level Controller, Invisible Down-Firing Speaker, Color Black, Built-in Convenience - PSUB10A - Walmart.com
Amazon.com: External Bass Volume Level Controller for Amplifier Subwoofer : Electronics
Harman RBC Wired remote subwoofer level control at Crutchfield
Subwoofer Controller Frequency, Phase, Gain - Electronic Circuit
PSW 10 Subwoofer - 10" 100W Powered Woofer | Polk Audio
