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β24: A discrete, cascoded, fully-differential power amplifier

post #1 of 309
1/21/08 at 11:46am
Thread Starter 
I just posted my latest project, basically a β22 on steroids, as a dedicated speaker amp, with a few new twists thrown in:

HeadWize: DIY Workshop > β24: A discrete, cascoded, fully-differential power amplifier

Have a look!

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post #2 of 309
1/21/08 at 1:20pm
nice, but way out of my depth

nice looking graphs though
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post #3 of 309
1/21/08 at 1:32pm
Interesting, as I JUST had the thought last night of building a speaker amp for downstairs.

Come on, d-cee, where's the fun in life if you don't involve yourself in projects that are way over your head?

Colour me hooked. I'll be following along closely.
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post #4 of 309
1/21/08 at 1:40pm
Very nice amp.

How much power is dissipated at iddle in the output stage ? (I couldn't find any figure in your text)
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post #5 of 309
1/21/08 at 1:48pm
Thanks for the exciting news amb !
I will sit back with a fresh cup of coffee and have a close look at the schematic and the circuit descriptions.
Starting from the already excellent β22, it should undoubtly resulted in a great amp.
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post #6 of 309
1/21/08 at 2:06pm
Ti, thanks for another outstanding amp! This is what I've been looking for
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post #7 of 309
1/21/08 at 3:14pm
Ti, this is great! I am early in my DIY career (but well into my mechanical engineer career...). My goal is to work my way up to the Beta22 and then find a nice speaker amp to build. By the time I'm ready, your Beta24 will likely be well tested and built. I'm stoked!
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post #8 of 309
1/21/08 at 3:54pm
WOW!!! I'm very excited about this project...and I think it'll be a great first foray into loudspeaker power amps (no one offers the quality of documentation and real-time support that AMB Audio does).

Guess I'll have to make some loudspeakers to go with it...δ24 anyone??? :P
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post #9 of 309
1/21/08 at 5:49pm
Sorry about my wallet. Looks like I know what I am doing when I get these B22s finished
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post #10 of 309
1/21/08 at 6:57pm
Wheeeee! Another tasty treat, looks good amb!
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post #11 of 309
1/21/08 at 7:21pm
WOW!!!!! Great graphs! Ok this is officially my next DIY project, finally a top-notch DIY 100w speaker amp to build.
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post #12 of 309
1/21/08 at 10:17pm
Extremely impressive figures. I really like the slew rate of 290V/us. I'll be looking into this in the future for sure.
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post #13 of 309
1/22/08 at 8:02am
Wow. Cooool. That is also true balanced amplifer for headphones from input to output. But volume control must be elsewhere and gain should be lower. AMB roules.
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post #14 of 309
1/22/08 at 8:09am
I need to graduate and get a job so I can spend money on stuff like this.
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post #15 of 309
1/22/08 at 5:55pm
Just realized that I had saved this bookmark for another possible DIY speaker amp candidate, also 100w into 8 ohms. I wonder Amb if you might know about it, and might want to share some assessment or comparison with the Beta24. Is this a worthy competitor of the Beta24?

Would like to know your thoughts on differences in maybe ease/difficulty of build, ease/difficulty in finding components, sensitivity to component matching, differences in features, measurements, even differences in size, heatsinking needed, things like that.

In any case I'll most likely try to build two Beta 24 monoblocks, but would highly appreciate your comments on this one anyway.
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