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Old 20th December 2002, 10:28 PM   #1
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Default home made surround sound

Hi there, I hope this is in the right place.

I wanted to set up a surround sound system for my bedroom, which would allow me to connect a multitude of sources to it, namely my PC, DVD, VCR, TV, DAB and the MP3 player which Im currently building out of old PC hardware

I know that I could buy a ready made surround sound system, with the decoder, speakers, and sub all together, but I really like the idea of putting together my own system.

Having a go at building the decoder, building a sub, and even the speakers, some thing that would have brilliant sound quality and not cost a fortune like these (which I was originally going to buy)

I dont really have alot of experience of electronics (apart from a GCSE Electronics course), but I can solder and Im willing to learn.

I cant seem to find any guides to building a decoder, speakers, or sub. Can any one give me any links?

Or perhaps theres some books I could read about this?
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Old 21st December 2002, 12:31 AM   #2
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Location: Vancouver, BC, Canada
I don't want to discourage you, but if you don't have much experience in electronics, a surround digital decoder isn't the best place to start.

However, I think you should definately build the speakers, subs and amps.

There are a lot of problems with building a decoder. It is not as simple as finding a schematic, going to radio shack for parts, etc. There are licensing issues with reguards to the DTS and other surround formats

I know it doesn't sound like exactly the application you were thinking of, but for movies, you might be better off buying a DVD player with analog 5.1 outputs. (just a suggestion)

If you search "decoder" and "surround" on this website, you should be able to find a bit more info on this...
My girlfriend's sub is bigger than mine...
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Old 21st December 2002, 01:11 AM   #3
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With the price of that system from the link that you posted, I do not think you can DIY the whole system with less than the price quoted in that ad.
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Old 21st December 2002, 01:21 AM   #4
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That's the inside of my Citation 7 Home Theatre preamp.

I wouldn't even dream about building something like that myself, when I can buy it used for $600 (and probably even less now). But building set of amps is definitely worth it.
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“Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC
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Old 21st December 2002, 01:58 AM   #5
grataku is offline grataku  United States
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There is a Sony ES decoder, an older though highly praised model that goes for about $200 on audiogon don't remember the model, alternatively you can just buy a DVD with dolby-dts 5.1 decoder built in and to that add volume control pre-amp for your other sources and amplifiers. It would be fun to design the pre-amp for this thing.
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Old 21st December 2002, 03:49 AM   #6
grataku is offline grataku  United States
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Here is the SONY I was talking about.


Or, if you want to spend some more


This is a great mistery of the market. This machine got rave reviews from the maybe 10 people that actually purchased it. I never understood if it was a question of looks or what. Anyway, this baby has balanced outs for those crazy AlephX builders.
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Old 21st December 2002, 11:19 PM   #7
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So you think I should try and build the speakers, sub and amp, but buy a seperate decoder for the surround sound?

Will I be able to connect all of the sources to the amp that I specified though?

Im afraid that Ive only ever owned the 'all in one' Hi-Fi systems, so Ive never really set up loads of seperates.
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Old 22nd December 2002, 06:15 AM   #8
lykkedk is offline lykkedk  Denmark
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Default Creative

You should have a look, at the CREATIVE EXTINGY, which could be used as a standalone decoder....
DCG3 Dual DCSTB, R2R DAC in build (2 ReflectorD's (+5VDC/+3.3VDC) + SSLV1.1 (+/-12VDC))
AlephJ Mimi! http://www.diyaudio.com/forums/pass-...mimi-mini.html
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