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Old 15th May 2015, 02:06 AM   #1
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Default School project - teacher's pet might get lucky...

So, I've got this d-class amp and a wireless streaming setup and a pair of Cerwin Vega triaxial car speakers...

What (apart from using them as a boat anchor or to prove Newton was right when he invented gravity) can I do with them?

My wife needs some sort of speaker setup for her classroom (third world country, no budget, no AV) but she teaches at two rural schools about 10km apart - she alternates mornings and afternoons at each school.

So, she wants something reasonably portable.

Of course I could just go down the market and buy her a cheap ghetto and be done with it... but that is no fun.

I was thinking something like a 'party speaker' - one box, built in amp, psu, receiver/streaming server/CD player (I have a TON of old PC CD players... who knew we would stop using them?) but haven't got a clue where to start with a box to house the speakers.

Now, if I get it right, the wee little impoverished kiddies might get to listen to some hard-core sing-along toons and there's a chance I might get lucky with teacher, so there's two very good reasons to make something work.

Any help or lewd comments gratefully received - but sorry, no pics of said teach will be provided.
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Old 15th May 2015, 07:10 AM   #2
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For those car speakers and because you want it to be as portable as possible just a small open backed box just big enough on the front to house the driver; loosely filled with batting and screened with wire mesh at the back. A bracket on each speaker box that attaches to the amp part but that allows speaker separation when playing.
Quite a few party boom box projects documented here if you search
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Old 15th May 2015, 07:11 AM   #3
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P:S I don't do lewd [ well not in public anyway] I do "LOUD"
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Old 15th May 2015, 07:17 AM   #4
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That's cos your from Geelong - Go Cats!

Thanks. So no need for anything tuned, then?
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Old 15th May 2015, 10:00 AM   #5
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Brilliant thread, I applaud you.
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Old 15th May 2015, 10:25 AM   #6
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Quote:
Originally Posted by Zootalaws View Post
That's cos your from Geelong - Go Cats!

Thanks. So no need for anything tuned, then?
Not doing well this year are they?
Car speakers usually don't really need a box; fitting as they normally do in the doors. But without the specific model that was just an informed guess. Usually they are high Qts drivers so open baffle/no box is OK
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Old 15th May 2015, 10:47 AM   #7
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They are these: Cerwin-Vega Stealth SS-2683 Stealth Series 5"x7"/6"x8" Speakers at Crutchfield.com
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Old 15th May 2015, 11:36 AM   #8
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I'm building something very similar for my sons room for playing audio books at night.

I bought a sheet of mdf and got them to cut it into 420mm x 180mm sections, which I will cut out 2 mounting holes for the speakers on one of the sheets.

I will be using a raspberry pi for content as I have one spare anyway and runeaudio to play it (content comes from my NAS).

I bought a cheap t class amp off ebay.

I will be using this to power it: LEICKE ULL ITX Pico PSU Power Supply 120W 12V 10A 5.5*2.5 mm | Compatible with LED Strips, TFTs & LDC Displays: Amazon.co.uk: Computers & Accessories

Using DC/DC Converter Module 12V To 5V 3A With USB Output Power Adapter 15W Regulator | eBay to step down the power for the pi

Got one of these HDMI to VGA + 3.5mm Jack Audio Cable Video Converter Adapter PC Laptop Xbox DVD | eBay to see if the sound with that is any better than the on board audio, probably not but it was cheap so thought I'd give it a go.

Last edited by Kode; 15th May 2015 at 11:38 AM. Reason: spelling
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Old 15th May 2015, 12:50 PM   #9
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Yep Open back box
Cheap and cheerful speakers
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Old 15th May 2015, 12:55 PM   #10
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Quote:
Originally Posted by Moondog55 View Post
Yep Open back box
Does it matter if the back is enclosed, don't really want my son to mess about with the insides?
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