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Old 12th February 2013, 10:46 PM   #11
Jsixis is offline Jsixis  United States
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Originally Posted by Jsixis View Post
Got an email from Deep Singh email is audioampdiy@gmail.com.
I found him reading some older posts on here.
hmm, no reply back so I guess I'll be buying some from ebay after all
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Old 22nd March 2013, 04:05 AM   #12
Jsixis is offline Jsixis  United States
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I bought 1 each of these boards

LM1875 Dual Channel DC Output 5532PRE Amplif PCB DIY | eBay power supply filtering, pre amp and stereo amp

Amplifier PCB TDA2030 LM1875 Low Cost Chip Amp Board | eBay one of these and another almost identical board from china but didn't save the link due to this one is from the US and price difference is miniscule

2 1 TDA2030A NE5532 18WX2 36W Stereo Pre Amplifier Amp Board Kit Magic Sound 12V | eBay 2 of these, Had one working but pushed the sub side too hard with a 4 ohm woofer and burnt a chip, I have other 2030's and 2050's
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Old 22nd March 2013, 05:11 AM   #13
prezden is offline prezden  Canada
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Please let us know how they work out for you.
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Old 22nd March 2013, 12:33 PM   #14
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I think this would work ? I have used them for other 5 pin power op amps .
Buy Audio Amplifier Printed Circuit Boards TDA2030 PCB audioamplifier,10W 79x63.5mm One Way Circuits M12653 online from RS for next day delivery.
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Old 22nd March 2013, 01:59 PM   #15
Jsixis is offline Jsixis  United States
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thanks for the link, I'm waiting on some warmer weather since I work in my garage. I did order all of my capacitors and resistors and bought 3 good size heat sinks.
Just need some 50 degree days.
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Old 22nd March 2013, 02:10 PM   #16
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Celsius and Fahrenheit .

16 C = 61 F
28 C = 82 F
To a good approximation .

451F = burning point of paper ( it is said ) .

16 to 28 C is a typical British summer .
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Old 24th March 2013, 01:22 PM   #17
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Hi jxisix , its deep from audioamp. I am going open source, I can share the pcb file with you and you can get them made in your place. Sending them by courier may not be cost effective.
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Old 24th March 2013, 02:44 PM   #18
picbuck is offline picbuck  United States
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Well...er...I know I'm going to get myself into a fistfight here, but how about the perfboard that Radio Shack sells? Others sell perfboard also, but the shack's is about the least expensive--surprising as that might be.

In my experience the wire lead length on components is more than long enough for connecting things up. I've never had to use any additional wire except for off-board connections.
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Old 26th March 2013, 01:16 AM   #19
Jsixis is offline Jsixis  United States
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Actually I prefer the pcb's, it is easier on my memory since the right parts are silk screened there.

I am almost finished with the 2.1 board I bought, it already had the components on it just had to find a decent enclosure. I am using an old A/B Parallel Port box. (btw the inside was shielded with something that measured 10 ohms with the meter so I had to paint the insides too)

Saturday I lined everything up, (after several nights of try it this way)
made a new faceplate out of 16 gauge aluminum, drilled all my holes then painted everything.
Only thing left to do is drill and tap the holes in the heat sink for the chips.

Since this is a garage amp the RCA jacks will be on the front panel, I get tired of having to turn my present amp around to change the inputs.
I would also like to include a 1/4" guitar jack, just haven't figured out what type of switch I should use so that the guitar works on both L & R channels.
I am using a radio shack 12.6-0-12.6 2 amp transformer, which from everything I have read is under power voltage and amperage wise, it will have to do till I buy a 18-0-18 4 amp.
Speakers will be a pair of 4" voigt pipes I made (89db@1 watt) and a 15" 8 ohm eminence woofer for the sub. Not a true sub but it should be passable.

I think the other 2 boards I would like to try to bridge them using 2050 chips, I don't really need a sub in my garage.

Sorry about the lack of pictures, I'll take one when finished and upload it here. My garage computer is not finished yet and when I'm working I forget to use a camera.

Last edited by Jsixis; 26th March 2013 at 01:23 AM. Reason: added more information.
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Old 26th March 2013, 01:20 AM   #20
JMFahey is offline JMFahey  Argentina
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Post the schematic here, and I'll suggest an answer
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