Finally managed to get my case done. 🙂
TPA3251 (TPA3255) aka ?Model Tiny? in Aluminiumgehäuse ? #360customs
TPA3251 "Model Tiny":
TPA3251 (TPA3255) aka ?Model Tiny? in Aluminiumgehäuse ? #360customs
TPA3251 "Model Tiny":
Attachments
THD+N (1W-P/2) < 0.003% 20Hz-20kHz (AES17)
right channel - amp, left - audiocard only. Load 3.3 Ohm. 20W
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Last edited:
Hi there,
after years I've finished mine, UCD400HG HxR and Hypex SMPS for each, input caps removed (but one input at SE passive pre).
If someone will build one my advise is to add a balanced input, who knows what will come in future...
First version: http://www.diyaudio.com/forums/class-d/87913-class-d-amp-photo-gallery-95.html#post4209011
after years I've finished mine, UCD400HG HxR and Hypex SMPS for each, input caps removed (but one input at SE passive pre).
If someone will build one my advise is to add a balanced input, who knows what will come in future...
First version: http://www.diyaudio.com/forums/class-d/87913-class-d-amp-photo-gallery-95.html#post4209011
Attachments
Another Hypex UCD400
Here's my build with
- 2x Hypex UCD400oem
- SMPS400
- MiniDSP 2x4HD
Choke-filtered power to the UCDs just because my workbench is overflowing with spare Hammond chokes right now.
The MiniDSP implements EQ curves required by the speakers: Bose 901 Series II (1974-ish). And I think the orange/blue color scheme is good for a seventies retread, right?
MiniDSP doesn't currently have hardware volume or input-select, only software and infrared control, so there's a Teensy 3.1 providing these IR functions. It's controlled by two rotary hex encoders. The script is here:
https://gist.github.com/hughpyle/d4013d27f9b426fca082088b99b7288f
Power for the Teensy and the MiniDSP is derived from the SMPS400 "aux power", via 12v and 5v regulators.
Sounds mighty 🙂
Here's my build with
- 2x Hypex UCD400oem
- SMPS400
- MiniDSP 2x4HD
Choke-filtered power to the UCDs just because my workbench is overflowing with spare Hammond chokes right now.
The MiniDSP implements EQ curves required by the speakers: Bose 901 Series II (1974-ish). And I think the orange/blue color scheme is good for a seventies retread, right?
MiniDSP doesn't currently have hardware volume or input-select, only software and infrared control, so there's a Teensy 3.1 providing these IR functions. It's controlled by two rotary hex encoders. The script is here:
https://gist.github.com/hughpyle/d4013d27f9b426fca082088b99b7288f
Power for the Teensy and the MiniDSP is derived from the SMPS400 "aux power", via 12v and 5v regulators.
Sounds mighty 🙂
Attachments
Last edited:
Hello,
A simple integration of :
2x UcD 700HG HxR
1x SMPS 1200
Chassis dimensions : 80x330x230mm
It's a bit compact but work very well !
Regards.
A simple integration of :
2x UcD 700HG HxR
1x SMPS 1200
Chassis dimensions : 80x330x230mm
It's a bit compact but work very well !
Regards.
An externally hosted image should be here but it was not working when we last tested it.
photo libreCramplifier, in progress.
I made a bunch of progress this weekend assembling a small, portable, amp using two white , knockoffs of the Sanwu PBTL TPA3110 boards.
I still have to add PCB terminals for the input, hook up the volume control, and make up pigtail cables for the inputs and outputs. Oh, and I'll probably need to rebuild it. I suspect that my routing choices are going to bite me.
I made a bunch of progress this weekend assembling a small, portable, amp using two white , knockoffs of the Sanwu PBTL TPA3110 boards.
I still have to add PCB terminals for the input, hook up the volume control, and make up pigtail cables for the inputs and outputs. Oh, and I'll probably need to rebuild it. I suspect that my routing choices are going to bite me.
Attachments
My TPA3118D2 case
Here is my case for TPA3118D2 amps, built using a couple of tin candy cans.
More information on “The reverse GainClone” thread ( http://www.diyaudio.com/forums/chip-amps/297538-my-reverse-gainclone-idea-gaincard-like-case.html ) in Chip Amp forum.
Ciao.
Luca
Here is my case for TPA3118D2 amps, built using a couple of tin candy cans.
More information on “The reverse GainClone” thread ( http://www.diyaudio.com/forums/chip-amps/297538-my-reverse-gainclone-idea-gaincard-like-case.html ) in Chip Amp forum.
Ciao.
Luca
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Here is my first try at assembling an amp
Each channel has a 2x50V 300VA toroid transformer, 40000uF providing -72~74V/+72~74V to a L20D from LJM.
There is a soft start for the push-button on the front and to limit the current surge.
works as expected !
Each channel has a 2x50V 300VA toroid transformer, 40000uF providing -72~74V/+72~74V to a L20D from LJM.
There is a soft start for the push-button on the front and to limit the current surge.
works as expected !
Member
Joined 2009
Paid Member
Gribb - a nice looking amp with tidy internal layout. I like the use of speaker cab. receded binding post panels. I don't like the use of self tappers though!
It looks like you drilled the case for a mains fuse holder but have not used one. Why?
What is the mains safety earth connected to? It should be connected to the case as close as possible to the mains input socket.
It looks like you drilled the case for a mains fuse holder but have not used one. Why?
What is the mains safety earth connected to? It should be connected to the case as close as possible to the mains input socket.