The Densenclone: a cheap, easy, fine looking power amp
As it seems, what I posted on Class D photogallery tickeled someone's curiosity.
Left picture: the original Final Amplifier Densen B-3xx +
Other pictures: my Densenclone
Made with:
- an IKEA LACK shelf
- amplifier board TA2024 ( Ebay )
- Switching Power Supply 12 V – 5A ( Ebay )
- blue LED and connectors
More information in next post.
Ciao.
Luca
P.S.: latest evolution at page 2
As it seems, what I posted on Class D photogallery tickeled someone's curiosity.
Left picture: the original Final Amplifier Densen B-3xx +
Other pictures: my Densenclone
Made with:
- an IKEA LACK shelf
- amplifier board TA2024 ( Ebay )
- Switching Power Supply 12 V – 5A ( Ebay )
- blue LED and connectors
More information in next post.
Ciao.
Luca
P.S.: latest evolution at page 2
Attachments
Last edited:
And here is the building information:
1) dig the shelf. It’s enough to take off the first piece of plywood ( less than 1 inch ) by making 4 holes with a drill at the corners of the rectangle you want to take off, then cut from one hole to the other with a handsaw
2) Take out the folded paper that fills the inside, it’s easy using the handsaw
3) Connect by screws the PSU and amp to a wooden board, with some holes on bottom to let cooling air to go around . If you are interested in using more powerful stuffs, then it’s better to use an aluminum sheet, better for cooling and thinner than wood, so the useful space is larger
4) Connect the base and the connector strip using a piece of L aluminum profile
5) Put wires and a LED with a R ( 820 ohm if with 12V PSU )
Tips:
1) While working, protect the edges of the shelf with paper tape ( see picture ), to avoid hurts and dents
2) Mind the height: the base board + the components must be less than 4.3 cm ( 1.7 “ )
Components:
You can use more powerful PSU, external also if you like, and more performing amps than TA2024 ( e.g. the TK2050 board ) of course.
The only limits are the space, specially the height, and the cooling.
You can put a potentiometer, too, to have an integrated amp, but in my opinion it would be less “charming”. Much better put that in an other case, the same of the amp, of course, as a passive preamp.
Thanks for your kind attention and ciao.
Luca
1) dig the shelf. It’s enough to take off the first piece of plywood ( less than 1 inch ) by making 4 holes with a drill at the corners of the rectangle you want to take off, then cut from one hole to the other with a handsaw
2) Take out the folded paper that fills the inside, it’s easy using the handsaw
3) Connect by screws the PSU and amp to a wooden board, with some holes on bottom to let cooling air to go around . If you are interested in using more powerful stuffs, then it’s better to use an aluminum sheet, better for cooling and thinner than wood, so the useful space is larger
4) Connect the base and the connector strip using a piece of L aluminum profile
5) Put wires and a LED with a R ( 820 ohm if with 12V PSU )
Tips:
1) While working, protect the edges of the shelf with paper tape ( see picture ), to avoid hurts and dents
2) Mind the height: the base board + the components must be less than 4.3 cm ( 1.7 “ )
Components:
You can use more powerful PSU, external also if you like, and more performing amps than TA2024 ( e.g. the TK2050 board ) of course.
The only limits are the space, specially the height, and the cooling.
You can put a potentiometer, too, to have an integrated amp, but in my opinion it would be less “charming”. Much better put that in an other case, the same of the amp, of course, as a passive preamp.
Thanks for your kind attention and ciao.
Luca
Attachments
brilliant!! very good looking
Is there any ventilation for the PSU? I know its not used hard for that amp board but it must get warm
Is there any ventilation for the PSU? I know its not used hard for that amp board but it must get warm
No ventilation at the moment.
After a 4 hour straight use, the case over the PSU is only slightly warm.
But in order to be sure, I'm going to drill some holes under the PSU, in the wood base and the case.
Ciao.
Luca
After a 4 hour straight use, the case over the PSU is only slightly warm.
But in order to be sure, I'm going to drill some holes under the PSU, in the wood base and the case.
Ciao.
Luca
flip the board with the amp, power supply and rear connections upside down.
Then drill big (2cm) holes where the psu fan is and around the empty spaces in the case. Add some small stick on rubber feet of for about 5mm clearance and it should be fine
All in all a great looking little amp - great thinking!
Then drill big (2cm) holes where the psu fan is and around the empty spaces in the case. Add some small stick on rubber feet of for about 5mm clearance and it should be fine
All in all a great looking little amp - great thinking!
Nice idea. Proper cheap DIY.
Lack shelf just £5 in the UK, and also available in black or green. Apparently.🙂
Lack shelf just £5 in the UK, and also available in black or green. Apparently.🙂
... and now the Pre - Densenclone
As I wrote, here is the passive preamp to be connected to the power amp.
The potentiometer is the very good DACT Type stepped attenuator 2 x 20 Kohm; the case follows the same minimalist philosophy of the project.
I think the pictures are quite self explaining.
Ciao a tutti.
Luca
As I wrote, here is the passive preamp to be connected to the power amp.
The potentiometer is the very good DACT Type stepped attenuator 2 x 20 Kohm; the case follows the same minimalist philosophy of the project.
I think the pictures are quite self explaining.
Ciao a tutti.
Luca
Attachments
... and now the Densenclone 3.0
Hi everybody,
just some pictures to record some modification I made:
• shelves shortened from 26 to 15 cm, in order to spare room
• pot and amp in the same shelf, power supply in the other
Now it’s more practical and ready to work with different power supplies.
Ciao.
Luca
Hi everybody,
just some pictures to record some modification I made:
• shelves shortened from 26 to 15 cm, in order to spare room
• pot and amp in the same shelf, power supply in the other
Now it’s more practical and ready to work with different power supplies.
Ciao.
Luca
Attachments
Densenclone evolution 4.0
Here is my latest release: new boards positioning and volume knob on the rear.
I know that this could be a bit uncomfortable, but I like flat surfaces, with no knobs or switches ...
Here in use with IKEA Lack full range speakers ( http://www.diyaudio.com/forums/full-range/292314-ikea-lack-full-range-speakers.html ):
Ciao.
Luca
Here is my latest release: new boards positioning and volume knob on the rear.
I know that this could be a bit uncomfortable, but I like flat surfaces, with no knobs or switches ...
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 in use with IKEA Lack full range speakers ( http://www.diyaudio.com/forums/full-range/292314-ikea-lack-full-range-speakers.html ):
An externally hosted image should be here but it was not working when we last tested it.
Ciao.
Luca
I was going to suggest a retractable volume knob or a rotary encoder board but I can't seem to find retractable potentiometer knobs or simialr. 🙁
This volume knob could be cool
$7.99 - Circular Touch Sensor - Rotary Soft Potentiometer - Tinkersphere
$7.99 - Circular Touch Sensor - Rotary Soft Potentiometer - Tinkersphere
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