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Best Build For a Novice
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Old 12th July 2018, 04:44 PM   #1
outfoxhyperion is offline outfoxhyperion
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Hi All,
I've never built an amp before, but I'm an avid DIYer and I'd like to give it a shot. The range of high-quality sound amplifiers I've listened to is exactly 0, so I don't imagine I'll find myself particularly picky when it comes to sound quality. Ideally I'd like to build something with <0.1% THD at 50W with at least 105 dB SNR, and I'd like to build something that beats the Dayton APA150 in price for parts, ignoring time engagement, since that's part of the fun, after all!

Hit me with your best suggestions, I'm all ears
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Old 12th July 2018, 05:14 PM   #2
jacques antoine is offline jacques antoine  France
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Best Build For a Novice
Rod Elliott's P3A:
60-80W Power Amplifier
Keep in mind that DIY amps will not save you any money.

Last edited by jacques antoine; 12th July 2018 at 05:16 PM.
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Old 12th July 2018, 06:57 PM   #3
Fabian85 is offline Fabian85  Germany
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Best Build For a Novice
Quote:
Keep in mind that DIY amps will not save you any money.
Especially because if you get into DIY you can't stop build new projects :-)

Want to add Symasym to the list.
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Old 12th July 2018, 07:48 PM   #4
outfoxhyperion is offline outfoxhyperion
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Oh believe me, I understand the can't stop with new projects part, that's how I am with speakers...
Fabian, if that was meant to be a link, it isn't working properly for me.
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Old 12th July 2018, 10:48 PM   #5
EssB is offline EssB  United Kingdom
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Quote:
Originally Posted by outfoxhyperion View Post
if that was meant to be a link, it isn't working properly for me.
It works just fine for me when I click on it
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Old 13th July 2018, 12:10 AM   #6
xrk971 is offline xrk971  United States
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Best Build For a Novice
Apex FH9 is easy peasy and sounds great. At least a dozen people have made it and all love the sound and parts count is very low.

100W Ultimate Fidelity Amplifier

BOM are in this directory thread:
A Directory of Apex Audio Amplifiers

Gerbers:
100W Ultimate Fidelity Amplifier

Click the image to open in full size.

You will need a dual rail PSU and that’s the hardest part of a DIY amp. Fortunately, you don’t have to use a big transformer and rectifier with mains anymore. Use two 5amp 24v smps bricks and some DC step up boards to create +/-35v. Connect the outputs of the two DC-DC step ups in series and you have it without touching 120vAC.
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Last edited by xrk971; 13th July 2018 at 12:17 AM.
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Old 13th July 2018, 10:08 AM   #7
arranzj is offline arranzj
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If you want to try something different:

How to Build a Class-D Power Amp

But you won´t have the THD yo want
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Old 13th July 2018, 02:50 PM   #8
outfoxhyperion is offline outfoxhyperion
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XRK, I was wondering about that amp as I had come across it while reading through your KaZba thread, that's actually what made me think about building my own in the first place. Is there a bill of materials available for it so that I can see exactly what's involved? And also, where do you recommend sourcing components? I'm sure that's information in the thread, but forgive me for not wanting to dig through 1000 pages to find it...
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Old 13th July 2018, 03:13 PM   #9
xrk971 is offline xrk971  United States
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The BOM is linked in above post. You can get all the parts from Mouser.com. They charge for shipping about $7 but you get it right away and parts are good quality. You can order from Aliexpress and have enough parts to make 10 more amps for same price but will take 3 weeks or more for delivery and some parts are questionable quality. However, I have built many good sounding amps with cheap Aliexpress parts.
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Old 13th July 2018, 03:50 PM   #10
outfoxhyperion is offline outfoxhyperion
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I had a D'oh moment, didn't see that you had already listed the BOM. I was thinking about doing a monoblock setup as well, what are your thoughts on bridging this particular amp?
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