high res PWM module for HI-FI amplifiers (DIY)

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#21
Hi,
this is bock diagram of TRW-Modulator.
Is probable at time,I develop professional amp with this modulator for DIY.

Regards
 

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#24
Hi,
This is a preview of the stereo modulator. Unlike the mono has a self-balancing
compensated in temperature (usually the output of the amplifier is dc to + / - 2 mV at + /-68V.

Regards
 

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#26
fb said:
AP2, do you have an output noise voltage measurement for the SDA-300?

🙂
Click to expand...

Hi,
SN/R on SDA-300 is -98/100dB (weight-A) at +/-58V.
carrier residual =400mV vP at 367Khz.
This module is usefull for driving 100-150w(8R) HF-unit on biamp system because have very high resolution (compared with A-B class in high frequency band) instead of use class A-B module.
2002 to 2005 printed 10.000 unit.🙂

Regards
 
#28
TCx said:
Hi AP2,
are you going to sell only the modulator module on eBay, or complete amp module? I am looking for a high quality class d stereo amp module to build my own hifi amp for home listening...
Thanks
Click to expand...

Hi TCx,
Only both models of modulator on ebay.
SDA is on audiopower.it. But for you hi-fi amplifier high quality for home
I will recommend a couple of DXA-400 or other models in the market with great sound.
 
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