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Old 10th May 2013, 08:39 AM   #701
Baldin is online now Baldin  Denmark
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Ayre MX-R mono blocks come to mind ...... and your amps probably sound even better
Stunning look Kraemerkid
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Old 13th May 2013, 06:39 PM   #702
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I know it just a cheap little Lepai Lp2020a+ but, for my first amp mod, I didn't want to spend much only to have it release it's Magic Smoke due to my ignorance. I wiped about 75% of the factory SMDs off the PCB and replaced with Audyn input caps, Wima caps and Wurth inductors on the output side, omited the factory "bass" and treble" controls, removed the lettering on top of the case and took it down to bare aluminum as well as fabricating new end plates. Machined a new aluminum volume knob and reused one of the LED "ON" lights. Shoved it all back into the small case and it still works.

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Last edited by THUMP LUMP; 13th May 2013 at 06:43 PM.
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Old 13th May 2013, 06:57 PM   #703
redjr is offline redjr  United States
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Originally Posted by THUMP LUMP View Post
I know it just a cheap little Lepai Lp2020a+ but, for my first amp mod, I didn't want to spend much only to have it release it's Magic Smoke due to my ignorance. I wiped about 75% of the factory SMDs off the PCB and replaced with Audyn input caps, Wima caps and Wurth inductors on the output side, omited the factory "bass" and treble" controls, removed the lettering on top of the case and took it down to bare aluminum as well as fabricating new end plates. Machined a new aluminum volume knob and reused one of the LED "ON" lights. Shoved it all back into the small case and it still works.

Click the image to open in full size.

Click the image to open in full size.
But how 'much' better does it sound over the original parts? IOW, was the additional cost worth the payoff in terms of sonic improvements?
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Old 13th May 2013, 07:47 PM   #704
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Better? Yes. Worth it? That would be subjective. For me, it was, from the stand point of learning something new. I viewed it as more of a learning process than looking for any big gains in performance. I think my next step will be to scratch build a LM3886 amp instead of modifying and existing one.

All together, I added about $30.00 in parts to a base price of about $20.00 for the amp. Add in the shipping and it totals around $65.00

Last edited by THUMP LUMP; 13th May 2013 at 07:51 PM.
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Old 13th May 2013, 08:11 PM   #705
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My latest prototype, based on a patent by Anaview/Abletec:
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File Type: jpg SEfDNxn.jpg (487.8 KB, 1416 views)
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Old 13th May 2013, 10:20 PM   #706
redjr is offline redjr  United States
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Better? Yes. Worth it? That would be subjective. For me, it was, from the stand point of learning something new. I viewed it as more of a learning process than looking for any big gains in performance. I think my next step will be to scratch build a LM3886 amp instead of modifying and existing one.

All together, I added about $30.00 in parts to a base price of about $20.00 for the amp. Add in the shipping and it totals around $65.00
Any learning is a good thing! Show us some pictures?
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Old 13th May 2013, 10:43 PM   #707
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Here are a couple more of the insides...

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Old 13th May 2013, 10:52 PM   #708
redjr is offline redjr  United States
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Here are a couple more of the insides...

Click the image to open in full size.

Click the image to open in full size.
They/links are not showing up properly. Try attaching them.
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Old 13th May 2013, 11:32 PM   #709
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I can see them fine but, here they are attached....
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File Type: jpg Front Assembled.JPG (113.4 KB, 31 views)
File Type: jpg Rear Assembled.JPG (144.8 KB, 33 views)
File Type: jpg Wired Front.JPG (258.1 KB, 77 views)
File Type: jpg Wired rear.JPG (216.4 KB, 77 views)
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Old 14th May 2013, 03:54 AM   #710
redjr is offline redjr  United States
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I can see them fine but, here they are attached....
Great pictures Thump. I guess you did gut the amp and start over. It was my firewall at work that didn't allow the pictures to be displayed. I see them fine now that I'm home. Not sure what the difference is, because images come thru fine.
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