41HZ AMP 6B POWER SUPPLY

[bull041161]

Hi all i have been useing a 41hz amp 6 for a while now but i have noticed the transformer in the 13.8 v power supply is geting noisy huming. Would this nois from the transformer impair the sound. I would allso like to know if droping the voltage from 13.8v to 12v would make the amp lose much power im useing tannoy dc 3000s which i built my self and are 91db so fairly sensative

[bull041161]

ANY HELP PLEASE

[bull041161]

Must be a very difficult question seen as no one can answer

[Pano]

I don't think the transformer buzzing would get into the electrical signal, but I've never had this problem. You should still figure out why the buzz, it could indicate a problem.

You will lose a little headroom running at 12V, but it will run cooler. That said, I never had trouble running the AMP 6 at 13.5V if the amp case is used as a heat sink. I've built many of these.

[bull041161]

Thanks very much for reply pano. Thay are fantastic little amps im useing a 13.5 bench supply and its the transformer that is buzzing it doesn.t seem to get hot i just wondered if there is a better power supply for the money. As i dont think im getting the best out of it i did use one of the brick type power supplys a while ago the ones thay use for lcd tv it did seem ok but like i said there only 12v

[Pano]

I was lucky in that I got to buy a lot of wall transformers at a good price. They were designed for a subwoofer but worked perfectly for the AMP 6.

Do you have the AMP6 with the power supply on board so that you need just ~12V AC?

[bull041161]

Originally Posted by Pano

I was lucky in that I got to buy a lot of wall transformers at a good price. They were designed for a subwoofer but worked perfectly for the AMP 6.

Do you have the AMP6 with the power supply on board so that you need just ~12V AC?

Hi pano no mine is one of those that needs a dc power supply its theamp 6 sneaky

[Pano]

OK, I see. In that case a good, solid SMPS at 12-13V or a linear supply will be fine. The linear can be regulated or not. I assume that's what you have with the buzzing transfo?

[bull041161]

Originally Posted by Pano

OK, I see. In that case a good, solid SMPS at 12-13V or a linear supply will be fine. The linear can be regulated or not. I assume that's what you have with the buzzing transfo?

Yes pano the one im useing now has 2 screw things in the front were you conect the amp to. If i wont loos too much power i might just get one of the smps power supplys that thay use for lcd tv. The problem with them is the voltage is 12v and then thay jump to 18v i cant find any at 13v or 14v so 12v will have to do