Ruth's sister
Ruth's sister WEAH-338 120W 4-8Ω 45Hz-20KHz crossover filter
Three-way passive crossover divides audio into low, mid and high bands for speakers up to 120 W and 4–8 Ω impedance
- Three-way frequency division covers 45 Hz to 20 kHz
- 120 W power handling suits demanding loudspeaker builds
- Overcurrent protection device extends service life
- Polypropylene film capacitors and high-temperature inductors ensure clear sound
- Compact 11 x 6.7 x 2.4 cm PCB fits tight enclosures
WEAH-338 Three-Way Crossover Filter
The Ruth's sister WEAH-338 is a three-way passive crossover network rated for 120 W maximum power. It divides the audio signal into low, mid and high bands for speaker systems using 4–8 Ω drivers. The board measures 11 x 6.7 x 2.4 cm and uses a fire-retardant PCB with thick copper traces. Components include polypropylene film capacitors and high-temperature inductors for durability.
For DIY Speaker Builders and Repair Jobs
This filter suits hobbyists building or repairing three-way loudspeakers with drivers up to eight inches. It provides a low-frequency corner at 45 Hz and extends the high band to 20 kHz. Builders needing a two-way design, active electronics, or different crossover frequencies should look at other circuit types. The kit includes only the frequency divider board.
120 W Power Handling at 4–8 Ω
The single specification that decides fit is the 120 W maximum power rating combined with the 4–8 Ω impedance range. Your amplifier output and driver impedance must stay within these limits to avoid overheating or distortion. Verify both figures against your system before purchasing.
Highlights
- Three-way frequency division covers 45 Hz to 20 kHz
- 120 W power handling suits demanding loudspeaker builds
- Overcurrent protection device extends service life
- Polypropylene film capacitors and high-temperature inductors ensure clear sound
- Compact 11 x 6.7 x 2.4 cm PCB fits tight enclosures
Specifications
No published specifications for this item yet.
Questions about this item
How loud can a 120W crossover actually play in a real speaker?
It handles up to 120W of amplifier power, so the practical limit is the speaker drivers you connect rather than the board itself.
What does the 4-8Ω rating mean for my amplifier connection?
The filter is designed for speakers rated between 4 and 8 ohms; connect it to an amp that is stable into that same impedance range.
Will the 11×6.7×2.4 cm board fit inside my cabinet?
The PCB measures 11 cm long, 6.7 cm wide and 2.4 cm high, so check your internal clearance against those dimensions.
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