DIY mosfet amp and preamp

[hydrovac]

On going Mosfet power amp and preamp build.

 

[kanwar]

Hi Hydrovac,


Nice build.

Which Mosfet you are using in the amplifier ?

 

[spirovious]

Nice work,can you let me know details?Even price?

 

[hydrovac]

Hi Hydrovac,


Nice build.

Which Mosfet you are using in the amplifier ?

Thanks ?????R,

I am using TDA7293 Mosfet. It's a really clean and crisp sounding chip amp, I'm actually pretty impressed with the sound quality.

 

[hydrovac]

Nice work,can you let me know details?Even price?

Thanks spirovious,

I am using TDA7293 chip manufactured by ST Microelectronics for the amplifier.
Preamp is based on OPA2134 op amp.
I can give you the costing, once the project is finished.

 

[sachu888]

Nice work,thanks for posting.Keep us posted.

Regards,
Sachin

 

[hydrovac]

Thanks Sachin,

Soon I will be posting my earlier DIY projects also. I have yet to take photos of the same.

 

[kanwar]

Thanks ?????R,

I am using TDA7293 Mosfet. It's a really clean and crisp sounding chip amp, I'm actually pretty impressed with the sound quality.

Yes, its a nice DMOS chip amp.

 

[captrajesh]

Interesting project. Wonder how good the Sq would be.

 

[sidvee]

Nice work Hydrovac, the amp. looks formidable. What are the specs?
Cheers,
Sid

 

[magma]

Excellent work

the Akai cab was a dvdp ?

 

[hydrovac]

Interesting project. Wonder how good the Sq would be.

The sound quality of the TDA7293 is very good, even hi-fi grade, and you need very few components to build it. I dont have a resistive dummy load so I havent been able to measure the RMS personally.

 

[hydrovac]

Nice work Hydrovac, the amp. looks formidable. What are the specs?
Cheers,
Sid

Basic parameters:

TDA7293 output power: 70W +70 W power without distortion

Total harmonic distortion: 0.003% @ 1kHz ref 1W

Output Impedance : 8 ohms

20,000 UF capacitor filter per ch, to ensure high dynamic rise to the occasion

Input voltage: 25-0-25v Dual Rail AC @ 4 Amps

 

[hydrovac]

excellent work

the akai cab was a dvdp ?

quartz timer count audio akai dt-110, Used to turn on your audio equipment, lights or Displays as a clock.

 

[hydrovac]

Posting some pictures of completed amp and preamp cabs with top cover, aluminum front plate, knobs in place. Not yet decided on the finish though. Might go for brushed anodized finish for Al face plate and powder coating for CR sheets.

 

[GeorgeO]

Job well done!

 

[gopib]

Excellent work!!

 

[captrajesh]

Hope to listen when I visit my mom next.

 

[denom]

:thumbsup:

Meticulous attention has being paid, but to be expected from you going by earlier B1 build.

Looking forward to pics of finished amps!

 

[hydrovac]

Hope to listen when I visit my mom next.

Sure captrajesh!