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Enclosure for Icepower 250ASX2 Amplifier board

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Enclosure / Box for Icepower 250ASX2 Amplifier board
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$5
2
0
78
updated July 30, 2024

Description

Note: The enclosure is 243mm long which fits Bambulab P1P/P1S/X1C and should fit Prusa MK3S+/MK4 or similar but not smaller printers such as Bambulab A1 or Prusa Mini.  I made it a single (long) print to simplify the design. 

 

Printing Tips

The enclosure and lid are printed separately (2 plates).

Use the 3mf file, or see the descriptions below to get the correct orientation for printing.

The components and lid might be a tight fit, depending on the tolerances your printer is capable of.  I've adjusted the lid for 0.2mm tolerance, which most printers should handle.

I printed with 3 walls thickness, and the enclosure is very sturdy.

I printed with matt PLA for a nice finish.

You can glue on any feet you wish.  I printed these simple feet out in TPU, scaled to 25mm*25mm in the slicer: https://www.printables.com/model/161604-tpu-feet

 

Components used 

(note: I get a small provision if you order via the links):

ICEpower 250ASX2 board

  • ICEpower board can accept both 110 or 220V mains power, just make sure the jumper is set correctly (see board manual).
 
Cable kit for 250ASX2https://shop.icepoweraudio.com/product/250asx2-cablekit

Power button, sufficient for 250ASX2 power output

  • I ran the built-in LED off the AUX power from the ICEpower board. 
    The AUX gives +24V which is too bright so I used a simple 1kOhm resistor divider to get 12V and ~20mA to the LED. 
    I used 1W resistors to dissipate the heat. 
https://amzn.to/3zSFKLh
Banana contactshttps://amzn.to/4fiC9GL
RCA jackshttps://amzn.to/3Ykin7w

AC power inlet

  • I glued it to the back instead of screwing it. 
https://amzn.to/3WDN4Dr

Power cable

  • Use a plug that suits your local region.
https://amzn.to/3LHrgAA

Brass thread inserts, 11 M3x5x5.

  • Shorter will also work. Model has 6mm deep holes.
https://amzn.to/3WPEDFv

Screws, 11 M3

  • Lid has 90 degree tapered recesses for screw heads. I chose black screws to match the lid color.
  • Lid is 3mm thick, and ICEpower board is 2mm thick. The screws need to be at least this long to reach the thread in the brass inserts.
https://amzn.to/3WIrQog

 

Should an amplifier enclosure be made of PLA plastic? 
According to the datasheet, the module gives off 40W at continuous maximum power output.  The passive airflow through the enclosure is enough to cool the module.  Just make sure to raise it by attaching feet (see TPU feet model), and avoid covering it with anything that would block the air flow. 

Tags

box enclosure amplifier audio icepower

Model origin

The author marked this model as their own original creation.

License