Description:	Two-channel (stereo) three-way (including single mixed subwoofer output) active crossover  filter.
Manufacturer:	KMTech Design (UK).
Configuration:	Fully assembled and tested.
Noise-Cancelling  Method:	n/a
Crossover  Frequencies:	User-definable by changing resistor values.
Filter Gradient:	12dB/octave.
Operation  Amplifiers:	6 x NE5532 dual audio-grade op-amps
Power Supply  Filtering:	Ceramic/electrolytic noise bypass capacitors.
Power Supply Type:	Dual 5V-0V-5V DC to 12V-0V-12V DC (see our shop  for suitable PSU).
Transformer Type:	Recommended 6VA dual-voltage toroidal.
Filtering caps:	39nF polyester, 3.3nF polyester.
Port configuration:	Two inputs, five outputs.
Power Connector:	3 Way 5mm terminal block.
Input Signal  Connector:	2 x RCA phono connector.
Output Signal  Connector:	5 x RCA phono connector.
Physical  Dimensions:	100mm x 100mm x 1.6mm.
PCB Mounting:	4mm mounting hole each corner.
	A high performance active crossover filter by  KMTech Design. This is a 2-channel (stereo)board. Each channel has a 3-way frequency split, but the subwoofer output is mixed (mixed by summing, not simply hardwired together) and combined into a single output, giving five outputs in total. The default crossover frequencies are 67 Hz and 1.7 kHz. You could also use this board as a standard stereo 3-way by bypassing the LF mixer (take the bass outputs from the LH side of R17 and R18).
	Let us know what crossover frequencies you need  and we will get as close as possible by changing resistor values.
	For your information, the formula for  calculating the filtering resistor values is: R = 1 / (8.89 x C x f) Where R = resistor value in Ohms f = Desired crossover frequency in Hertz C = 0.000000039 for the lower crossover frequency. C = 0.0000000033 for the higher crossover frequency. ***You don't need to worry about the maths! We will do all the  calculations for you!
	Please note there is no enclosure included with  this product, it is as shown in the first listing photo.