Mono Tone Control Pre Amplifier FC-28 Rev.2 with Vol. Bass Treble 12-24VDC 
Rockford Fosgate 9100-9400 Original Faceplate Assembly Flat Cable Electronic Crossover
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M-FLT1 Rumble & Scratch 12db/Octave filter For audio use
Price range: $15.00 through $18.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-2BI or MCRS-2BI3 2Way Bi-Amp Active Stereo Electronic Crossover 24db Low/High Filters
$33.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-2M 2Way Mono Active Crossover for HI End Amplification
Price range: $28.00 through $33.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-3M 3Way Mono Active Crossover for HI End Amplification
Price range: $35.00 through $40.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-3ST 3Way Stereo 3rd order State variable filter Active Electronic Crossover
Price range: $45.00 through $55.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-3WN/DR 3Way Active System Stereo Electronic Crossover with 24db Low/Mid/High Filters
$45.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-4WS High Quality 4 Way Active Electronic Crossover Low/Low Mid/High Mid/High
Price range: $6.00 through $50.00 Select options This product has multiple variants. The options may be chosen on the product page -
MHL-2 Stereo Variable Low/High Pass Crossover. LP 45-150Hz/Full/HP 60-460Hz
$25.00 Select options This product has multiple variants. The options may be chosen on the product page -
MSS-1 Subsonic High Pass Stereo Active Filter 3rd order 18db
Price range: $8.00 through $12.00 Select options This product has multiple variants. The options may be chosen on the product page -
MSS-1TR Subsonic High Pass Low Noise Discrete Active Filter 3rd order 18db
Price range: $12.00 through $15.00 Select options This product has multiple variants. The options may be chosen on the product page -
MSS-2 Subsonic High Pass Active Filter 3rd order 18db Model WV Single 9-15 or 15-30Vdc
Price range: $7.00 through $8.00 Select options This product has multiple variants. The options may be chosen on the product page -
MSS-3B/CTS Subsonic High Quality Stereo 24db 4th order 15/20/25/30 Hz Active Filter
Price range: $10.00 through $12.00 Select options This product has multiple variants. The options may be chosen on the product page -
MSS-4LP Low Pass 6/12/18/24 db Stereo Active Filter module
Price range: $10.00 through $17.00 Select options This product has multiple variants. The options may be chosen on the product page -
SUB-1STR Single DC 12-24V Active Low Pass Filter Crossover Subwoofer DIY KIT
Price range: $10.00 through $12.00 Select options This product has multiple variants. The options may be chosen on the product page
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M-FLT1 Rumble & Scratch 12db/Octave filter For audio use
Price range: $15.00 through $18.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-2BI or MCRS-2BI3 2Way Bi-Amp Active Stereo Electronic Crossover 24db Low/High Filters
$33.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-2M 2Way Mono Active Crossover for HI End Amplification
Price range: $28.00 through $33.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-3M 3Way Mono Active Crossover for HI End Amplification
Price range: $35.00 through $40.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-3ST 3Way Stereo 3rd order State variable filter Active Electronic Crossover
Price range: $45.00 through $55.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-3WN/DR 3Way Active System Stereo Electronic Crossover with 24db Low/Mid/High Filters
$45.00 Select options This product has multiple variants. The options may be chosen on the product page -
MCRS-4WS High Quality 4 Way Active Electronic Crossover Low/Low Mid/High Mid/High
Price range: $6.00 through $50.00 Select options This product has multiple variants. The options may be chosen on the product page -
MHL-2 Stereo Variable Low/High Pass Crossover. LP 45-150Hz/Full/HP 60-460Hz
$25.00 Select options This product has multiple variants. The options may be chosen on the product page -
MSS-1 Subsonic High Pass Stereo Active Filter 3rd order 18db
Price range: $8.00 through $12.00 Select options This product has multiple variants. The options may be chosen on the product page -
MSS-1TR Subsonic High Pass Low Noise Discrete Active Filter 3rd order 18db
Price range: $12.00 through $15.00 Select options This product has multiple variants. The options may be chosen on the product page -
MSS-2 Subsonic High Pass Active Filter 3rd order 18db Model WV Single 9-15 or 15-30Vdc
Price range: $7.00 through $8.00 Select options This product has multiple variants. The options may be chosen on the product page -
MSS-3B/CTS Subsonic High Quality Stereo 24db 4th order 15/20/25/30 Hz Active Filter
Price range: $10.00 through $12.00 Select options This product has multiple variants. The options may be chosen on the product page -
MSS-4LP Low Pass 6/12/18/24 db Stereo Active Filter module
Price range: $10.00 through $17.00 Select options This product has multiple variants. The options may be chosen on the product page -
SUB-1STR Single DC 12-24V Active Low Pass Filter Crossover Subwoofer DIY KIT
Price range: $10.00 through $12.00 Select options This product has multiple variants. The options may be chosen on the product page