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Chip Amps Amplifiers based on integrated circuits

Is this a good LM3886 Kit?
Is this a good LM3886 Kit?
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Old 12th August 2017, 03:42 AM   #11
Richidoo is offline Richidoo  United States
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Quote:
Originally Posted by fructose View Post
Audiosector? I don't agree with the "expensive" part if they are indeed "excellent".
He's referring to member tomchr, his business name is Neurochrome.com. His line of LM3886 based amps are the "Modulus-86" composite amplifier, "Modulus-286" composite parallel 3886 amp, and the "LM3886 Done Right" a straight up plain 3886 with no composite opamp babysitter. They are all excellent designs, with excellent sound quality and he provides excellent instructions and support. You get what you pay for.
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Old 20th August 2017, 02:00 AM   #12
fructose is offline fructose  United States
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Quote:
Originally Posted by miro1360 View Post
fructose, dont build LM3886, rather build or find something with LM4702 ...
Cool. Got suggestions for a LM4702 build?
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Old 20th August 2017, 04:39 AM   #13
Tromperie is offline Tromperie  Australia
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Originally Posted by AndrewT View Post
Nover capacitors are not British.
Nover is part of the Anglia Group, a British company, according to their website.
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Old 20th August 2017, 04:55 AM   #14
miro1360 is offline miro1360  Europe
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Quote:
Originally Posted by fructose View Post
Cool. Got suggestions for a LM4702 build?
amazon, ebay
I sent you PM with links ...
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Old 21st August 2017, 06:55 PM   #15
TerryO is offline TerryO  United States
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Quote:
Originally Posted by fructose View Post
Cool. Got suggestions for a LM4702 build?
National Semiconductor used to have designs of amplifier circuits that their engineers designed around their chips. Any of their designs were very hard to beat and worked like a dream. My LM4702 amp has been absolutely reliable and will give nearly any Solid State amp a fair run for the money. I've had it for about 15 years with absolutely zero problems. I wish all audio equipment was as reliable!

BTW, I've brought that amp to many audio meets and have experienced no complaints about the sound and it's been left in play for hours...

Best Regards,
TerryO
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Old 24th August 2017, 08:33 AM   #16
dotneck335 is offline dotneck335  United States
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Quote:
Originally Posted by fructose View Post
Cool. Got suggestions for a LM4702 build?
http://www.ti.com/lit/an/snaa031a/snaa031a.pdf
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Old 5th September 2017, 12:37 AM   #17
tomchr is offline tomchr  Canada
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Beware that TI discontinued a wide range of audio ICs about two years ago. Sadly, the LM4702, LM4780, LM3875, LM3876, LME498xx, and some other LME family members were all among them. The LM3886 is still in current production. The LM1875 is as well.

That aside, I second Terry's suggestion to go through the National Semiconductor (now TI) application notes for your chip of choice. If you haven't already, I also suggest reading through my Taming the LM3886 article series. While some of the content is specific to the LM3886, most of it applies to any chip amp.

Quote:
Originally Posted by Richidoo View Post
He's referring to member tomchr, his business name is Neurochrome.com. His line of LM3886 based amps are the "Modulus-86" composite amplifier, "Modulus-286" composite parallel 3886 amp, and the "LM3886 Done Right" a straight up plain 3886 with no composite opamp babysitter. They are all excellent designs, with excellent sound quality and he provides excellent instructions and support. You get what you pay for.
Thank you for your vote of confidence and your review. I really appreciate it.

Tom
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Last edited by tomchr; 5th September 2017 at 12:40 AM.
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Old 14th September 2017, 06:18 PM   #18
dotneck335 is offline dotneck335  United States
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Quote:
Originally Posted by fructose View Post
Has anybody done this exact one from China? How does it sound?
LM3886 Power Amplifier Board Kit DC SERVO 5534 Independent op amp DIY Amplifier | eBay
Any other suggestions for best possible sound? Open to any kind of chip.
I've written to the seller, asking for a schematic. No reply yet. Anyone else get one?
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Old 14th September 2017, 09:39 PM   #19
miro1360 is offline miro1360  Europe
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Originally Posted by dotneck335 View Post
I've written to the seller, asking for a schematic. No reply yet. Anyone else get one?
not good, additional opamps in signal way (servo and another one probably before LM4702 input) ... if you avoid these opamps, it can be good ... avoid I mean servo not used and another one jumpered if it is in signal way for LM4702
before you avoid servo, be sure your source have small DC offset ..

Last edited by miro1360; 14th September 2017 at 09:41 PM.
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Old 14th September 2017, 09:57 PM   #20
Aatto is offline Aatto  United States
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I got this and i m happy with it, upgraded the coupling caps tho,huge different :

Audio LM3886 Amplifier Board DIY Kit for HiFi (With Speaker Protection)
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