Pac Audio BB-1PR Bass Blocker 133uF Capacitor - 300 Hz at 4 ohm or 150 Hz at 8 ohm 6dB High-Pass Crossover
Amazon.com: Skar Audio SK600HZBB-PR Elite Frequency Filters - Eliminates Frequencies 0-600 Hz at 4 Ohms - Pair : Electronics
First Order Passive Crossovers, 6 dB per Octave
350W 750HZ 5KHZ 3 Way Crossover Board Treble Midrange Bass Frequency Divider 4Ohm-8Ohm Speaker Filter Bookshelf Home Audio 1PC - AliExpress
Best Buy: Fusion FM-504 Marine Amplifier 4 x 65 W @ 4 Ohm 4 x 95 W @ 2 Ohm 500 W PMPO 4 Channel FM-504
DOWN4SOUND JP284 - BLUE | 2000W 4 Channel Amplifier - Down4Sound Shop
Crutchfield Bass Blockers (600 Hz cut-off) Pair of inline frequency filters at Crutchfield
Passive Crossovers
800-5 Khz Band Pass 8 Ohm Crossover
4 ohm high pass filter resulting in too much HF sound
First Order Passive Crossovers, 6 dB per Octave
600 Hz High Pass 4 Ohm Crossover
5 Khz High Pass 4 Ohm Crossover
Dayton Audio - 6k-HPF-4 High Pass Speaker Crossover 6,000 Hz 12 dB/Octave
Errata, SRPP, and More Crossovers
PS Shallow-Mount Water Resistant 12" Subwoofer 600 Watts Rms DVC 4-Ohm
Crutchfield Bass Blockers Pair of inline high-pass filters (5000 Hz cut-off) for tweeters at Crutchfield
Parts Express Speaker Protector Inline High Pass Filter 2.8 kHz/1.4 kHz - Walmart.com
Pac Audio BB-2PR Bass Blocker 66uF Capacitor - 600 Hz at 4 ohm or 300 Hz at 8 ohm 6dB High-Pass Crossover
500 hz, 12db/oct High Powered Low Pass Filter (Crossover) for Subwoofer Enclosures | Reverb
Dayton Audio High Pass Speaker Crossover 12 dB/Octave - 4 ...
Low Pass Filter Question | DIYMobileAudio.com Car Stereo Forum
350W 750HZ 5KHZ 3 Way Crossover Board Treble Midrange Bass Frequency Divider 4Ohm-8Ohm Speaker Filter Bookshelf Home Audio 1PC - AliExpress
Pac Audio BB-3PR Bass Blocker 49.69uF Capacitor - 800 Hz at 4 ohm or 400 Hz at 8 ohm 6dB High-Pass Crossover
