Group pre-power electronic circuit boards divide Description:
Frequent reference to the US sub-plate ESP design company， is set to four-channel stereo output structure， left and right channel stereo input signal， output 4-channel signal into left treble， bass left and right treble， bass right， you can directly promote 4 channel amplifier circuits.
Frequency sub-board of the highlights:
Excellent divider circuit
Crossover frequency peaks gluten-free
Crossover easy setup
4-channel output independently adjustable
Design enthusiast
The perfect soundtrack to reproduce sounds
Op-amp power supply Class A sampling of the best， than LM317 337 78XX series power more delicate， the circuit comes with four times the previous level gain. If you want to change the pre-amplification， please let us know.
Depending on the crossover point we calculate the resistance and capacitance parameters， capacitance specification will and pictures will vary at different frequencies Note
The main technical parameters:
1， the filter type: Linkwitz-Riley filters
2. Crossover: 2200HZ (ie 20-2200HZ bass output 2200-20000HZ for treble output) can be ordered other frequency crossover point (free custom) different speaker crossover point is not the best as you can give me Crossover I can help you calculate the circuit parameters on sale again
3， the attenuation slope: -24dB / Oct
4， plate-type structure: four-channel stereo output， treble， bass
5， the op-amp chip: imported JRC\'s double NE5532 (of course according to customer needs to replace other op amp such as: OPA2604AU OP275G TL072， etc.)
7， Plate Dimensions: 173 * 69mm， installation pitch: 133 * 75mm
8， AC adapter power supply range 14 to dual 19V Dual
9 connectors: audio input / output divider ---- 2-up Cinch * 3
package included :Assembled preamp two-level electronic crossover board x1