TDA7294 2.1-channel Subwoofer Amplifier Board DIY (Upgraded Version With Protection Circuit) | Электроника

TDA7294 2.1-channel Subwoofer Amplifier Board DIY (Upgraded Version With Protection Circuit) | Электроника

TDA7294 2.1-channel Subwoofer Amplifier Board DIY Board (Upgraded Version With Protection Circuit)

The price does not include heat sinks and transformers (the buyer has purchased it separately)

Subwoofer output is BTL connection, so the subwoofer can not use 4 ohms, to use more than 8 ohms, the supply voltage can not be as normal connection of the power amplifier board with the high voltage, the maximum can only double 26V, the safety voltage is Double 24V, otherwise it will burn out.

Must not be self-righteous, that I used to how much with the 7293 how much voltage, impedance 4 ohms are not bad, different design, usage will be different.

Product Name: TDA7294 2.1 channel subwoofer amplifier board

Input voltage: AC24V-0-AC24V (voltage range of 22-26V) Transformer requirements in the foot power of 300W or more, be careful not to use what virtual transformer.

Output power: Subwoofer 160W + left 80W + left 80W

Board Size: 236 X 98 X 50MM Length X Width X Height (without potentiometer)

Function: The power amplifier board can output, all the way subwoofer, left and right track all the way output, composed of 2.1 channels, can replace the various types of 2.1 power amplifier system

The power amplifier board features: all components are carefully selected

1: 25A rectifier bridge with 10000UF X 6 NOVER gold AUDIO fever-level supplements, enough to cope with a variety of large dynamic output

2: with output protection circuit, delay protection, midpoint voltage protection, switching machine yuan impact, perfect protection speaker system, protection relay with imported Omron silver contacts, durable, first class quality

3: use the original dark TDA7294 IC quality assured

4: op amp with the original Texas factory 5532, although the long history of the op amp, but it is undeniable, the sound is very good, is the king of the op amp, with gold-plated transport seat, you can also replace a variety of more High-level op amp without welding

5: coupling capacitor, the choice of Italy AV audio coupling, this coupling is a low loss fever level, the board is unique for each channel coupling is two parallel use, one for aUF one is 3UF, the advantage of doing so is to make The treble is brighter, the lower frequency is more full, but it increases the cost.