Dx Blame MKIII-Hx - Builder's thread - Page 47 - diyAudio
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Old 18th November 2011, 02:17 PM   #461
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Default Have not made yet?

Let's go Juan... we want to listen your test videos with better audio.

Come on man...hold your solder pump and remove the 1K2 and install the 680 and you will adjust and gonna be happy.

You're having your output switching on and off...noisy audio at high frequencies...you gonna have a much better audio after you adjust and switch your output transistors on.

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg

Last edited by destroyer X; 18th November 2011 at 02:21 PM.
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Old 18th November 2011, 03:04 PM   #462
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Thumbs up Now the resistor is 680 ohms and the idle is set to 1mV

I replace the 1.2k resistor to 680 ohms but before all that I check the pot to make sure is set to 500 ohms, then I replaced the 1.2K to 680, after that I apply power to the board no woofer off, and no signal to it and I got 1.3mV so I adjusted to 1mV as you can see on the video, I know probably you guys done it 1000 times lol, is cool here is the link:Dx Blame MKIII adjusting trimppot in Puerto Rico - YouTube

Last edited by vargasmongo3435; 18th November 2011 at 03:12 PM.
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Old 18th November 2011, 03:17 PM   #463
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Oh I'm on it yes I did it already...!!!!!!!!!!!!!!!!!!!!!! I got to teste it right away!!!!!
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Old 18th November 2011, 03:40 PM   #464
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Default Sound is now better at low volumes

Well, sound is a crescent thing...passes from low levels to high levels..not having switching noises audio becomes better.

But with all that voltage you should be carefull about your power level as your heatsinks are not big enough.... i would love to see a test with some bass..but keep power low.

Nice logo.... try to change to Dx Corporation only..not Blame and without the final S please.... i like it...nice...very nice.

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 18th November 2011, 04:58 PM   #465
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Ok cool I will changed I still have it around the video logo
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Old 18th November 2011, 06:10 PM   #466
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Default I love your videos...make more!

They are nice.... lovely.

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 18th November 2011, 06:16 PM   #467
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Talking Adjusting amp idle

I just change the logo now is Dx Corporation here is the same video but with a different logo

Dx Blame MKIII adjusting trimpot in Puerto Rico - YouTube

regards
vargasmongo
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Old 18th November 2011, 06:37 PM   #468
a.wayne is offline a.wayne  United States
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My board has that resistor listed as an 680 not 1.2 K ...
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Old 18th November 2011, 06:37 PM   #469
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Default I love your videos...make even more...now with

the correct logo.

Dx Corporation is the Union of the good world audiophiles.

Each one that build a Dx Amplifier enters to the legion of honor and have their name and picture into the hall of fame.... and they gonna be there from now to the eternity.

regards,

Carlos
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Power supply; ripple, filter, noise, stability and the use of capacitance multiplier... Portuguese and English; https://www.youtube.com/watch?v=sSm0ku1eIgg
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Old 18th November 2011, 10:29 PM   #470
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Quote:
Originally Posted by meanman1964 View Post
Byron,
What a nice case, can you tell me the dimensions of the heatsinks?
Case and heatsinks are from Par Metal. Par-Metal It's the HS-11XX-x. Case is here: Par-Metal It's #12-19125-x. Heatsinks are exactly 4 7/8" tall.
Actually, I planned the whole thing out in MS Powerpoint, and knew it would be a really tight fit. But then I decided to add a soft start after I ordered the case, and my bridge rectifier ended up larger than I expected.
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