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Cube Conversion

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Trainman View Drop Down
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    Posted: 20 December 2018 at 2:31pm
I came across this old cube type Philips radio/tape player in my garage. It has 4 speakers inside and architecture that might suit a voice practice amplifier that I could use with my acoustic guitar. I sing a bit low and play with a pick so the guitar is quite loud drowning out my voice a bit unless I put a lot of effort in to raise the voice. I stripped everything out that is no longer needed and I am now left with the speaker installation. That is 2No at 4w x 8Ώ's and 2No at 2w x 8Ώ'.  It has 240V mains and battery power to the innards amounts to 12volts.

Would a mini car amp (less than €$50) activate the thing and could I rig a mic to such an amp arrangement?

https://ibb.co/0DyFQDP -


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 3:14pm
For a mic, you´ll need something with a suitable input - and tone control, or a separate mixer.


Earplugs Are For Wimps!
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mini-mad View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 8:20pm
Originally posted by Earplug Earplug wrote:

For a mic, you´ll need something with a suitable input - and tone control, or a separate mixer.


And because of the low power handling of the drivers maybe a 2x10w 12v diy amp board (so it can be run off batteries too) and just run a pair of drivers of each of the channels. That should be a simple solution providing you know a smidge about basic electronics.
If it sounds like a gorilla is trying to escape, turn it down.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Trainman Quote  Post ReplyReply Direct Link To This Post Posted: 20 December 2018 at 10:49pm
Maybe I might not have to throw it in the skip.Would some of these off the shelf minis do the trick if I can use the inputs for the mic?

https://goo.gl/A7Xk5s - DTA-120
https://goo.gl/SfDAIH - DTA3116S 
https://goo.gl/mJ8WnU - Lepai LP
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mini-mad View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Posted: 21 December 2018 at 2:34am
Originally posted by Trainman Trainman wrote:

Maybe I might not have to throw it in the skip.Would some of these off the shelf minis do the trick if I can use the inputs for the mic?

https://goo.gl/SfDAIH - DTA3116S 
Last one would be the cheapest and by the looks of things tone controls. Just will need a separate Mic preamp stage to be added
If it sounds like a gorilla is trying to escape, turn it down.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Trainman Quote  Post ReplyReply Direct Link To This Post Posted: 21 December 2018 at 2:00pm
From the same online source is the

Velleman Microphone Preamp Kit 


https://www.parts-express.com/velleman-microphone-preamp-kit--320-204


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