Quote from: Roly on January 22, 2015, 03:28:24 AM

Well it sure ain't "Class-D"; and from the same font of wisdom, Davelectro, "It has a built-in soft limiter".  Sorry Dave, wrong on both counts.

OK.

Back then no one knew for sure what was going on inside the microterror. It was rumored to be class D because of its small size.  So I guess I got carried away by those rumors. Gut shots revealing the (now obvious) TDA started to show up later.

I misunderstood what the datasheet says about the gain compression feature. I'm sorry.

Look no further. This is what you need:



Try to use fets with Vp ~-2V for best performance.

You're absolutely right. LEDs will clip sooner and in fact that's the nice breakup you hear. Besides, they are probably there to keep the power amp from clipping.

Series I= discrete (JFET/BJT) preamp circuitry.
Series II, III= op amp-based.

Hope it helps!

While this TDA7293-based power amp may sound very good, you won't get the original amp's response with it. The RG100 uses mixed-mode feedback to raise its output impedance.

Great! One question: Is this any better than chip amps in terms of clipping?

Quote from: Joe on February 01, 2011, 03:11:37 PM
Been a while since I've been on...

Never finished my build, mainly couldn't get the preamp right.

Hi Joe,

What was the problem with your preamp?

As far as I know, MG amps suffered quite a lot from bad solder joints. Look for one of those especially on the gain/volume pots.

Here it is. MG15 CDR.

IMO, Distortion Channel is good for metal (and nothing else, actually). Clean channel is awfully dull.

I had a similar issue with a Microstack MG15. The volume pot on the overdrive channel was poorly soldered.