What kind of subwoofer does Panasonic sa-ht870 have?

On these systems you can use each of the 5.1 channels seperately and the sub sounds fantastic when driven by an external source. For reference and search engines the whole system is the SA-HT870 with the SB-WA870 subwoofer.

How to turn on a Panasonic SA-HT sub?

So ……. you need to join the D_GND with the normal GND at the 25 pin system plug. You can then turn on/off the sub by bridging the +6v and P_CONT lines. Once the sub is on, you can then feed the 5.1 channels directly through the 25 pin plug on the back of the sub.

Is the fan on my ht-870 controlled by the sub?

Ok – this information is used at your own risk. On my HT-870 it appears the subwoofer fan is controlled by the sub itself rather than the FAN line on the system cable – this may vary between different model subwoofers. On the WA-870 subwoofer, there is a constant 6v system supply when it is plugged in and on standby.

Is there a way to hack a Panasonic sub?

I’ve opened the sub and its all pretty simple in there with a large transformer and audio amps bolted to a huge heatsink. There appears to be no “intelligence” in the sub (i.e. microcontrollers) so in theory should be relatively simple to get the sub/speakers working on a standalone basis.

On these systems you can use each of the 5.1 channels seperately and the sub sounds fantastic when driven by an external source. For reference and search engines the whole system is the SA-HT870 with the SB-WA870 subwoofer.

So ……. you need to join the D_GND with the normal GND at the 25 pin system plug. You can then turn on/off the sub by bridging the +6v and P_CONT lines. Once the sub is on, you can then feed the 5.1 channels directly through the 25 pin plug on the back of the sub.

Ok – this information is used at your own risk. On my HT-870 it appears the subwoofer fan is controlled by the sub itself rather than the FAN line on the system cable – this may vary between different model subwoofers. On the WA-870 subwoofer, there is a constant 6v system supply when it is plugged in and on standby.

I’ve opened the sub and its all pretty simple in there with a large transformer and audio amps bolted to a huge heatsink. There appears to be no “intelligence” in the sub (i.e. microcontrollers) so in theory should be relatively simple to get the sub/speakers working on a standalone basis.