The Densenclone

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
 

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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
 

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JRKO

Member
2003-12-26 11:20 pm
U.K.
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!
 
... 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
 

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... 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
 

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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 ...

[IMGDEAD]http://i67.tinypic.com/103saqo.jpg[/IMGDEAD]

[IMGDEAD]http://i64.tinypic.com/ao9k2.jpg[/IMGDEAD]

[IMGDEAD]http://i68.tinypic.com/1z1b41c.jpg[/IMGDEAD]

Here in use with IKEA Lack full range speakers ( http://www.diyaudio.com/forums/full-range/292314-ikea-lack-full-range-speakers.html ):

[IMGDEAD]http://i65.tinypic.com/2b1b0g.jpg[/IMGDEAD]

Ciao.
Luca