tpa3116 class-D amp bridging

[soundnovice]

have anybody tried bridging tpa3116 class-D amp?
(many low cost 2.0 and 2.1 boards are available on ebay)

 

[Saturnus]

It's already bridged.

 

[soundnovice]

It's already bridged.

you mean the 2.0 board that gives out 50W/ch is already bridged?
i saw 2.1 board which is 2x50W + 100W. how is this 100W achieved?

 

[Saturnus]

you mean the 2.0 board that gives out 50W/ch is already bridged?
i saw 2.1 board which is 2x50W + 100W. how is this 100W achieved?

Easy, it's at half the impedance. The 2x50W is at 4 ohm, the 1x100W is at 2 ohm. If all speakers are 8 ohm, each channel will give 25W.

All the above is with a 24V supply. If you have 12V supply, divide all power output numbers by 4.

 

[soundnovice]

Easy, it's at half the impedance. The 2x50W is at 4 ohm, the 1x100W is at 2 ohm. If all speakers are 8 ohm, each channel will give 25W.

All the above is with a 24V supply. If you have 12V supply, divide all power output numbers by 4.

thanks 🙂
2ohms is very low impedence, might work for car subs though

 

[Saturnus]

I wouldn't recommend to run a 2 ohm woofer on it though. The specification shows what the chip is capable of. Not what will be useful or sound good.