TDA7492 Pair using master/slave SYNCLCK

[Peterm100]

I'm using a pair of TDA7492s in a bi-amped system with a 24dB/octave electronic crossover crossing over at 300Hz. I'd like to sync the two amps with a master/slave SYNCLK so they are sharing the same clock signal.

Has anyone tried this, and if so does it have a positive impact on the phasing of the signal over the crossover region? I suspect any improvement will be small at best but you never know until you try!

Also, if anyone has done this mod to the TDA7492 board is there a trick to tapping into the SYNCLK pin/trace (I realize the ROSC trace on the slave will have to be cut, but not sure if there's an easy way to tap the SYNCLK somewhere on the board).

Thanks for any insights!

 

[nigelwright7557]

I am a bit confused as the TDA7492 is a bipolar amp not class d.

 

[ICG]

I am a bit confused as the TDA7492 is a bipolar amp not class d.

No, it's class D (PDF).

The TDA7293 (PDF) is class A/B.

 

[Peterm100]

It's definitely a class D, unless there's something else that shares the same designation...

In the meantime I found this link that provides detailed instructions for the mod at Parts Express:

Google Drive -- Page Not Found

However, if anyone has done this for a 2.1 system I'd like to hear your impressions on the effect.

 

[Peterm100]

Oops, find the link at:

TDA7492 Class D amp board... - Techtalk Speaker Building, Audio, Video Discussion Forum

Post #18

 

[nigelwright7557]

It's definitely a class D, unless there's something else that shares the same designation...

Sorry got my numbers mixed up.