We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green circuit board crossover module with adjustable frequency dials and metal components

Ruth's sister

Ruth's sister 270B4NB402926 speaker crossover 120W 800/1000Hz

SKU CH-RVWM-20Q3G

A 120W speaker crossover board with adjustable 800Hz or 1000Hz frequency points for 4-8 inch drivers

  • 120 W power handling drives demanding speaker systems
  • Adjustable 800 Hz / 1000 Hz crossover points tailor frequency split
  • Third-order 18 dB and second-order 12 dB slopes ensure precise driver integration
  • MKP and MKI capacitors plus inductors deliver low-loss, high-temperature performance
  • Metal resistor with fireproof sheet provides fast heat dissipation and shock protection

Speaker crossover module 120W

The Ruth's sister 270B4NB402926 is a passive crossover board designed for coaxial speaker builds. It handles up to 120W and offers adjustable frequency points at 800Hz and 1000Hz. MKP and MKI capacitors combine with inductors for the low-frequency section. A metal resistor and fireproof sheet improve heat dissipation and safety.

For DIY coaxial speaker projects

This board suits builders assembling 4 to 8 inch coaxial drivers who need third-order filtering at 800Hz and second-order at 1000Hz. It is not for active systems requiring powered DSP or external amplification per band. Buyers needing a full speaker kit with drivers and enclosure should look elsewhere. The module arrives as a bare circuit board only.

Adjustable 800Hz or 1000Hz crossover point

The selectable frequency divider lets you match the network to your specific driver combination. Third-order 18dB slope at 800Hz and second-order 12dB slope at 1000Hz are the only two modes available. Verify your driver specifications against these fixed slopes before purchase. No other crossover frequencies or slope options are provided.

Highlights

  • 120 W power handling drives demanding speaker systems
  • Adjustable 800 Hz / 1000 Hz crossover points tailor frequency split
  • Third-order 18 dB and second-order 12 dB slopes ensure precise driver integration
  • MKP and MKI capacitors plus inductors deliver low-loss, high-temperature performance
  • Metal resistor with fireproof sheet provides fast heat dissipation and shock protection

Specifications

No published specifications for this item yet.

Questions about this item

Will the MKP/MKI capacitors or the metal-film resistor on the 270B4NB402926 board need scheduled replacement?

The film capacitors and metal-film resistor are solid-state parts with no moving elements, so no periodic replacement is required under normal 120 W operation.

What thermal limit appears first when the crossover runs continuously at 120 W?

The metal-film resistor and fireproof rubber sheet are designed to dissipate heat quickly, so the board itself is the first component to reach its temperature ceiling under sustained full-power use.

How hot does the 12.4×17 cm board get and does it make any noise when driven all day?

The passive network has no fan or moving parts, so it runs silently; the resistor and rubber sheet keep surface temperature low enough for continuous 120 W operation without audible noise.

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.