Custom BNC FMOD ™ Inline Crossovers (Low Pass Filters)
$350.00
NEW PRODUCT
Low Pass Frequency Range Options
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⚠️ Please allow 1 week lead time on this item. All sales are final. Custom BNC FMOD units cannot be returned, exchanged, or refunded. Please double-check your system specifications and crossover frequency requirements before placing your order.
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Custom BNC FMOD ™ Inline Crossovers (Low Pass Filters)
Product Details
🇺🇸 MADE IN THE USA 🇺🇸
Standardized at 22K ohms and a -3db frequency point.
Protect your speakers and eliminate distortion with precision. With a 12 dB per octave slope, these plug-and-play Harrison Labs (Black Label) FMOD’s (sold in pairs for two channel systems) are professional passive BNC line level crossovers that filter out unwanted high frequencies before they reach your amplifier. By removing unnecessary high-end content, these inline filters ensure your audio system plays cleaner and more efficiently. These high-end units are housed in a rugged die-cast aluminum Pomona enclosure with male and female BNC connectors, delivering the same high-performance engineering in a durable, professional-grade build.
Choosing the Right Low Pass Frequency
For optimal performance, technical precision is essential. If you are undecided between two frequency values, the professional recommendation is to err on the side of the lower value.
Selecting the lower frequency provides a greater safety margin, keeping high-frequency content out of drivers not designed to handle it. This ensures a cleaner, more efficient output and superior protection for your professional or car audio system.
Harrison Labs · XLR Series
Crossover Spec Guide
Every XLR inline crossover filter is available at the same standard crossover frequencies as the FMOD series, with no color-band coding. Tap a frequency to see its exact −3dB spec at 10K and 47K ohm loads.
20Hz crossover
high pass only
Low Pass
Not offered at this frequency
High Pass
25Hz @ 10K Ω
17Hz @ 47K Ω
30Hz crossover
high pass only
Low Pass
Not offered at this frequency
High Pass
37Hz @ 10K Ω
26Hz @ 47K Ω
50Hz crossover
Low Pass
54Hz @ 10K Ω
46Hz @ 47K Ω
High Pass
62Hz @ 10K Ω
43Hz @ 47K Ω
70Hz crossover
Low Pass
76Hz @ 10K Ω
64Hz @ 47K Ω
High Pass
87Hz @ 10K Ω
60Hz @ 47K Ω
80Hz crossover
Low Pass
86Hz @ 10K Ω
74Hz @ 47K Ω
High Pass
100Hz @ 10K Ω
68Hz @ 47K Ω
100Hz crossover
Low Pass
108Hz @ 10K Ω
92Hz @ 47K Ω
High Pass
125Hz @ 10K Ω
85Hz @ 47K Ω
150Hz crossover
Low Pass
162Hz @ 10K Ω
138Hz @ 47K Ω
High Pass
187Hz @ 10K Ω
128Hz @ 47K Ω
200Hz crossover
Low Pass
216Hz @ 10K Ω
184Hz @ 47K Ω
High Pass
250Hz @ 10K Ω
170Hz @ 47K Ω
300Hz crossover
high pass only
Low Pass
Not offered at this frequency
High Pass
375Hz @ 10K Ω
255Hz @ 47K Ω
500Hz crossover
Low Pass
540Hz @ 10K Ω
460Hz @ 47K Ω
High Pass
625Hz @ 10K Ω
425Hz @ 47K Ω
1kHz crossover
Low Pass
1.1kHz @ 10K Ω
920Hz @ 47K Ω
High Pass
1.25kHz @ 10K Ω
850Hz @ 47K Ω
2.5kHz crossover
Low Pass
2.7kHz @ 10K Ω
2.3kHz @ 47K Ω
High Pass
3.13kHz @ 10K Ω
2.13kHz @ 47K Ω
3.5kHz crossover
Low Pass
3.78kHz @ 10K Ω
3.22kHz @ 47K Ω
High Pass
4.37kHz @ 10K Ω
2.98kHz @ 47K Ω
6.5kHz crossover
Low Pass
7kHz @ 10K Ω
5.98kHz @ 47K Ω
High Pass
8.12kHz @ 10K Ω
5.5kHz @ 47K Ω
How to read this: the standard crossover frequency shown is the −3dB point, standardized at 22K ohms. Expect an 8% (LP) / 25% (HP) increase at 10K ohms, and an 8% (LP) / 15% (HP) decrease at 47K ohms.
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