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Go Back   Head-Fi: Covering Headphones, Earphones and Portable Audio > Misc.-Category Forums > DIY (Do-It-Yourself) Discussions

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Old 03-08-2005, 03:07 AM   #371 (permalink)
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Default First DIY headphone amp

Here's a modified cmoy amp I built like 2-3 years ago. Not the neatest thing on the inside, but hey, it's the first thing I ever built, and it works. I think I did a pretty good job with the case, though.

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Old 03-08-2005, 02:02 PM   #372 (permalink)
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Originally Posted by BrokenEnglish
i'd definitely like to hear one of those peranders-amps. they look neat. but you seem to be one of the few people who ever built them. so please comment on some auditive attributes.
That's right! If I want to get popular, stop immediately with all this SMD stuff. This design isn't particulary hard to solder so why don't you try it?

BTW: Good job Tobias!
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Old 03-08-2005, 02:10 PM   #373 (permalink)
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Originally Posted by peranders
This design isn't particulary hard to solder so why don't you try it?
believe me... i'd love to do so, peranders. be patient... i'm a bloody beginner, who uses a 15w-solder iron with quite average results (s. above), even with simple "through hole" soldering. i'd need to get more eperience and buy some equipment (solder station, tweezers"...) for smd.
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Old 03-08-2005, 07:28 PM   #374 (permalink)
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The iron i was using was way to big (the tip) but it was easy anyway, and if you would have a friend that could push down the smd pieces down so that they wont move so easy then the smd soldering would be like twice as easy/fast as normal soldering.
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Old 03-12-2005, 03:11 PM   #375 (permalink)
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Just a little something:







STEPS set at 24V
C7: 330µF/50V Panasonic FM
C4/5: 100µF/50V Panasonic FM
Op amps: AD8065
Heatsinks: 1.5"
Mosfet bias: 120mA
Bunch of Wima and BC caps, unfortunately the colors clash...what I really need is some green one's to bridge the gap
NKK illuminated pushbutton
DACT CT2 50K Stepped Attenuator
ALPS "Blue Velvet" on the variable bass boost
0.33µF caps for Bass Boost
One non-dinky champagne colored knob courtesy of strohmie (from THL Audio I think)
Par-Metals case (12"W X 8"D X 3"H)
The knob for the bass boost is temporary...I've got another champagne knob on the way.
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Old 03-12-2005, 06:13 PM   #376 (permalink)
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Made another Hammond MINT based on the (imo better sounding) OPA2132 chip.




(AD8620 opamp above OPA2132)
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Old 03-13-2005, 07:20 AM   #377 (permalink)
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Well, I got that urge to build again, so here is my Pimeta for your viewing (my listening) pleasure. This is my second amp, first was a Cmoy, and I have a mint in the works.


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Old 03-13-2005, 07:31 PM   #378 (permalink)
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Default my lunchbox M³

I pronounce it Mmmmm



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Old 03-13-2005, 07:54 PM   #379 (permalink)
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Aww cool I like it
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Old 03-13-2005, 07:59 PM   #380 (permalink)
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Originally Posted by phobus
I pronounce it Mmmmm
We're starting a club http://www6.head-fi.org/forums/showthread.php?t=104700 I think a whole lunchbox stereo system is in order.
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