Building a Small Stereo Boombox. Does this wiring layout look OK? - diyAudio
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Old 3rd June 2013, 10:29 PM   #1
LBKosmo is offline LBKosmo  United States
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Default Building a Small Stereo Boombox. Does this wiring layout look OK?

Greetings to all!

This is my first DIY audio build and I decided to make a small stereo boombox that I can sit on a desk or table. It's going to use a Sure Electronics 2x8w @ 4Ω Amplifier board with a 50K Stereo potentiometer to control the volume, and two Visation FRS7-4 2.5" Full-Range speakers.

I just wanted to post up the wiring layout I drew up to make sure it all looks alright seeing as this is my first project and would like to do my best to not screw it up.

Thanks in advance!

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Old 5th June 2013, 12:37 PM   #2
spwalek is offline spwalek  United States
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It looks OK to me. You may just have to increase the LED resistor depending on it's type/current rating.
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Old 5th June 2013, 03:28 PM   #3
LBKosmo is offline LBKosmo  United States
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Thanks for the reply! I appreciate it. The LED will be a 5mm Green LED with a forward voltage of 2.2VDC/20mA, so 560Ω seemed right on the money according to the online calculators I queried.
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Old 5th June 2013, 03:31 PM   #4
Mooly is offline Mooly  United Kingdom
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Many modern high brightness LED's can be too bright for comfortable viewing at only 1ma or so. Trial and error is the only way I'm afraid.
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Old 5th June 2013, 04:03 PM   #5
LBKosmo is offline LBKosmo  United States
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Thanks for the tip. Much appreciated.
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Old 9th June 2013, 05:10 PM   #6
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You need to use a fairly large switch . Or a Relay . A smaill .5 amp switch will never hold up running the main power rail of the amp. you also need to add a fuse.
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Old 9th June 2013, 07:53 PM   #7
LBKosmo is offline LBKosmo  United States
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I planned on using the following switch:

SPST Miniature Rocker Switch 060-670

It's rated at 6 amps @ 125VAC. What size fuse would you recommend?
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Old 11th June 2013, 03:05 AM   #8
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anyone else concerned about not having a star ground?
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Old 11th June 2013, 03:13 AM   #9
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Quote:
Originally Posted by LBKosmo View Post
What size fuse would you recommend?
3A SB
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Old 11th June 2013, 03:20 AM   #10
LBKosmo is offline LBKosmo  United States
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Thanks!

How would you recommend implementing a star ground into this wiring? It will be powered by a 12V AC/DC Power Adapter and will only have a two-wire circuit.
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