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Post pics of your builds.... - Page 255

post #3811 of 9586
Quote:
Originally Posted by Arkku View Post
My first DIY amp; the SOHA II and (slightly modified) power supply, and optional crossfeed filter. The four toggles on the right are for controlling the crossfeed (a true bypass, perspective control, treble compensation and bass compensation). The other toggles are for input/output selection and active/passive mode (the box can be used as a passive volume control and optional crossfeed filter when unpowered).




Rear panel has two selectable inputs, using switched jacks so that the left can be used alone for stereo or together with the right for mono, and also an alternative miniplug input for convenience on the other input. There are also outputs for pre-amp use (selectable with a front-panel toggle, the headphone output is on the front), and a heater voltage toggle. The power supply case also has a ground lift switch for connecting the audio ground to the mains ground (not at all, through a ground lift circuit or directly—note that the power supply case is always connected to mains ground for safety reasons).




Before case perforations:



The large toggle on the power supply is the on/off switch, the first small one toggles power to the tubes (B+ and heaters, for testing and possible future use as a ±15 V supply for something else), and the second small toggle enables operation with higher current tube heaters by eliminating a resistor in the circuit (normally installed to keep the heater regulator from running quite as hot).

The text on the case is still handwritten, I don't know if I'll do something about that or just leave it.
Very impressive! The panel work looks great and well thought of!

How does it sound? :P
post #3812 of 9586
Naked Cmoy...




Searching for a case...


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DIY Gainclone Amplifier Blog
post #3813 of 9586
Quote:
Originally Posted by kuldeep1 View Post
Naked Cmoy...

Searching for a case...
Dude, great job. We do not see very many home etched PCBs around here. Exceptional first post
post #3814 of 9586
Quote:
Originally Posted by kuldeep1 View Post
Nice work!
Find a suitable case and it will be even nicer.

Welcome to Head-Fi!
post #3815 of 9586
arkku,
beautiful! hope you enjoy the tunes.
post #3816 of 9586
My last build with help from some friends
A Staving Sudent Headphone Amp.











post #3817 of 9586
Looking good Rui!
post #3818 of 9586
Quote:
Originally Posted by mb3k View Post
Looking good Rui!
ThankS Mb3k
It works really good! And it can drive my AKG K701 quite well!
post #3819 of 9586
where did you get those socket covers?

BTW: Nicely done.
post #3820 of 9586
Quote:
Originally Posted by -=Germania=- View Post
where did you get those socket covers?

BTW: Nicely done.
Those came from here Tube Socket 7-pin, w/shield :: Other Sockets :: Sockets - Tubes :: Interconnects :: Electronic Parts :: Banzai Music GmbH

But one came a bit like Pizza Tower!

Cumps
Rui
post #3821 of 9586
If your tubes run hot be VERY careful with tube shields. They can hold heat in.

For preamp tubes, no worries (generally) but using them with power tubes (or small tubes used to power headphones...) can get sketchy quickly.
post #3822 of 9586
Yes, but I never use them, just for transportation.
post #3823 of 9586
Some pictures of my Starving Student. Sounds great, first every DIY/audio project too.









Compulsory dark shot:

post #3824 of 9586
Quote:
Originally Posted by -=Germania=- View Post
where did you get those socket covers?

BTW: Nicely done.
When I was ordering parts for mine back in July, sockets with covers were easy to find. I had a hard time finding ones without covers.
post #3825 of 9586
my first every DIY: a cmoy!







Case work being done atm.
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