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Chip Amps Amplifiers based on integrated circuits

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Old 16th November 2009, 05:19 PM   #1251
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very professional
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Old 19th November 2009, 07:44 PM   #1252
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Default My first chip amp

8 LM3886 200W per channel. 600VA 27V and 240,000 uF. I think I overdid it with the caps, but oh well, the more the merrier. Overall, very nice sound, no hum and very very small hiss at the tweeter at about .5 inch.
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Old 20th November 2009, 12:48 AM   #1253
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Originally Posted by lhowing884 View Post
8 LM3886 200W per channel. 600VA 27V and 240,000 uF. I think I overdid it with the caps, but oh well, the more the merrier. Overall, very nice sound, no hum and very very small hiss at the tweeter at about .5 inch.
Wow, That power supply will never run out of juice for sure!.Very nice done.
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Old 20th November 2009, 06:56 PM   #1254
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Wow, That power supply will never run out of juice for sure!.Very nice done.
Thanks. I had extra caps laying around so I didnt want want waste them.
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Old 20th November 2009, 10:59 PM   #1255
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Thanks. I had extra caps laying around so I didnt want want waste them.
I bet you spent a lot of time with your toy there.it looks really a professional job.
I do not see hefty power supply like these to often. Hats off buddy!
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Old 21st November 2009, 01:34 PM   #1256
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Quote:
Originally Posted by lhowing884 View Post
8 LM3886 200W per channel. 600VA 27V and 240,000 uF. I think I overdid it with the caps, but oh well, the more the merrier. Overall, very nice sound, no hum and very very small hiss at the tweeter at about .5 inch.
Really nice!

If I may ask, did you base your design in the National application notes?
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Old 21st November 2009, 10:37 PM   #1257
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Really nice!

If I may ask, did you base your design in the National application notes?
It is similar. Some things i changed are taking out the buffer and my own method to adjust the offset voltages. I also have some output inductors in there.
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Old 21st November 2009, 11:36 PM   #1258
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Folks:

When I made the offer, my 13 year old daughter jumped at the chance to help me build a small integrated amplifier for her bedroom. She did about half the work (including assembling the BrianGT boards and most of the other soldering). We used an extra HiFi2000 chassis and Front Panel Express cut, engraved and colored the front and rear panels. The amp sounds great, she's happy and we had a little bonding time (very important, for reasons all parents of young teenagers will appreciate). All in all, a great father-daughter project.

Regards,
Scott
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Old 21st November 2009, 11:58 PM   #1259
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Scott,

Absolutely splendid work. FPE is awesome isn't it? I use them all the time. Please give a huge pat on the back for your daughter. Its nice to see more females get into a hobby that is very male dominated

Best,
Anand.
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Old 22nd November 2009, 01:08 AM   #1260
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Originally Posted by SRMcGee View Post
Folks:

When I made the offer, my 13 year old daughter jumped at the chance to help me build a small integrated amplifier for her bedroom. She did about half the work (including assembling the BrianGT boards and most of the other soldering). We used an extra HiFi2000 chassis and Front Panel Express cut, engraved and colored the front and rear panels. The amp sounds great, she's happy and we had a little bonding time (very important, for reasons all parents of young teenagers will appreciate). All in all, a great father-daughter project.

Regards,
Scott
I have to say, it is very nice amp and even better when you know you got help from your daughter. my congratulations for you and your daughter!
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