How do you like that amp? It sounds like you need an O-scope to debug. What are approx costs of all parts and PCB?
It is the most challenging build I did, also the most precise I did. It is a very good amp. Logic solved the only problem I had. Cost, well you can make them as expensive as you like, but around $125 per channel gives good idea I think, make 10 and price per board could drop, (pick a couple 0.01% resistors that each cost more than complete chinese ampboard and price will rise obviously)
why don't you build IRAUDAMP7 it can be scaled for output as per your requirement.
Isn't the $20 IRS2092 amp based on IRAUDAMP7? I think that means one just needs to swap out parts per table 5 of Ref Design? That would save quite a bit of work.
http://www.irf.com/technical-info/refdesigns/iraudamp7d.pdf
But the reason I want to build the Modulus 386 is that I have heard it is the best amp at any price - better than some $25k commercial amps. Ultra low distortion and very quiet ground floor noise. Blacker blacks.
http://www.irf.com/technical-info/refdesigns/iraudamp7d.pdf
But the reason I want to build the Modulus 386 is that I have heard it is the best amp at any price - better than some $25k commercial amps. Ultra low distortion and very quiet ground floor noise. Blacker blacks.
yes you are correct. . you just need to change components. it also have very low noise problems. just give it a shot it won't let you down
Noise iraudamp7 is 5 times LiteAmp, irs2092 is noisy. Modulus needs lowered psu voltage for 4 ohm, Parallel-86 is designed for 4 ohm. Lower powersupply for Parallel-86 and some MartinLogans can be driven with low distortion and without switching off, ask Tom how to parallel lm4780 on Parallel-86 with another lm4780 and your Dparallel86 should be able to drive harder MartinLogans, using low psu voltages. But you can read that thread yourselves.
in my prototype i had no issues with noise. i use 55-0-55 VDC supply rails and drive 4ohms load very conveniently.
I don't know if it is one of the best sounding, I just find - and it is my opinion - there are not a lot of measurements & positive feedbacks. Maybe I am wrong as it took time to read every posts.
The XY LM 386 looks good as well, less expensive and mods.
I agree. If you read the specifications of a lot commercially available "HiFi" amps, their measurements (THD, cross talk, noise level, IMD) are impeccable. However, whether one like its sound is another matter. Of course, from a designer's point of view, good measurement is the basic goal of the design. Again, I would like to use tube amps as example - most of them do not measure well (as compare to SS amps) but a lot of people like how they sound.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.