View Full Version : Need help

05-04-2005, 08:32 PM
Is there anyway I could add home amps through my computer?
I want to have a real nice dorm room system, and have lots of songs on my hd, so I was hoping I could run everything through that.

05-04-2005, 10:08 PM
Get a regular integrated amp, and a 1/8" mini stereo phone plug to RCA's cables.

Plug the phone end into your computer's sound card output, and the RCA's into your integrated amp. There ya go :)

05-05-2005, 01:21 PM
I am a total noob when it comes to home audio.

Could you give me links to what you are talking about?

Do I need a special sound card too?

05-05-2005, 01:53 PM
Go to any Radioshack...


That's the Monster Cable version, but you need a cable with those ends. One has the 1/8" stereo phone "headphone" plug to go into your soundcard's line output, the other end has the standard RCA left/right to go into your integrated amp.

05-05-2005, 01:55 PM

That's the one I used. Eight bucks.

05-05-2005, 03:43 PM

Could I put that into a receiver than add amplifiers off of that?

05-05-2005, 04:20 PM
You mean a preamp...you need a preamplifier or an external processor to do that.

05-05-2005, 05:12 PM
Whats that?
And how would I do it?

Like a line driver for home?

05-05-2005, 05:15 PM
Sort of...but a preamp also allows you to control the volume level.

I think you need to take a trip down Google-lane :D

What exactly are you trying to do? You sound like you want a 5.1 or 7.1 channel system with seperate amplifiers for each channel, something that's pretty complex for a newbie to set up :)

What do you have in mind...a system diagram would be helpful.

05-05-2005, 05:21 PM
Well it will be in dorm first then home later

An seperate amp definatley for a subwoofer, maybe a PE plate amp, or one from acoustic visions.

Maybe one for the speakers, Id like a 5.1 setup. And if they can run off the receiver that would be good too.

Basically I want an insanely loud system for my dorm, but if I want to turn it down it can sound real good as well. I was looking at the kits that are already made on acoustic visions but I have no idea what to look for in terms of speakers, or any of that crossover graph stuff.

05-05-2005, 05:27 PM
As someone who's had some experience with dorm systems, I'll share some of my experiences :)

You don't need 5.1 in a dorm. The biggest problem is going to be getting the staging right...it's simply too small. A good 2-channel is all you need, plus a subwoofer.

Use one of those cables I showed you for the integrated amp or receiver input. You don't need an external preamplifier unless you really want to go seperates - not something I'd suggest for a dorm system or anything tight on space/budget. A good 5.1 or 2 channel receiver, like a NAD or Denon, would be my suggestion. I use a 20-year-old NAD 3020 integrated amp, and for a solid-state amp, it's pretty good. I've got that amp running a pair of big JBL 3-way bookshelf speakers.

You don't need a lot of sub for a small dorm - about 1 12" is as big as I'd go. I have an Adire Audio Rava in my room, and it gets plenty loud. You'd run into major trouble with your RA and neighbors if you went much over that, I'd imagine.

05-05-2005, 05:37 PM
Okay then.

How about 2 speakers or components or cabinets or whatever they are called and a subwoofer

What would you suggest? Links please if you can, or exact terms to search for, or good places to buy home audio stuff from.

05-05-2005, 05:42 PM
Infinity Primus series...they are affordable and sound good.

Denon AVR-1705 or 1905 would both be great.

Onkyo has some good recievers, too.

05-05-2005, 05:48 PM
Do those have options to add on external amps later in case I want to expand?

05-05-2005, 05:51 PM
No...but if you get a good 5.1 channel receiver, you don't really need seperate amps.

05-05-2005, 05:55 PM

Is that a good receiver?

Is 75w enough? I dont know how home audio compares to car audio in terms of the environments and power needed.

05-05-2005, 05:56 PM
That reciever looked OK, as long as you dont buy from Crutchfield..



05-05-2005, 05:58 PM
Is 75w enough? I dont know how home audio compares to car audio in terms of the environments and power needed.

75 watts is plenty, even to your generic-standard-common as dirt 87dB/w speakers that are everywhere. Generally, you need a whole lot less power at home than what you're used to in vehicle - but you need efficient speakers to take advantage of that. For example, I'm using 2 watts for my bedroom/office system, but I've got very efficient speakers for it.

05-05-2005, 06:04 PM

Can someone give me other home audio sites to buy from then? And is that a quilty receiver, like is onkyo a good brand?

That receiver also has 1 subwoofer and 1 preamp output, so I could amps later at home if I wanted to correct? Its the same principle as a headunit right?

05-05-2005, 06:12 PM
And is that a quilty receiver, like is onkyo a good brand?

Onkyo's good.

I bought most of my stuff off Ebay...at least the "mainstream" home audio stuff I have.

05-05-2005, 06:54 PM
Silly me. How could I forget?

Am I correct about the preouts though?

05-05-2005, 09:10 PM
Not quite...not all receivers have preouts for every surround channel.

05-06-2005, 01:01 AM
But the preouts for the sub would be sub amplifier preouts?

And what would the other preouts be?

05-06-2005, 01:29 AM
that is the same reciever i have except i have the black one.
it doesnt have any pre outs except for the subwoofer.
but you might look at the onkyo tx-nr801.
it is a 7.1 with every option you could every want.
100 watts per channel at 8 ohms, close to 200 at 4 ohms
has an ethernet link so you can stream files directly into it from your computer and it has pre outs for all 7.1 channels but i would think that is enough power to run anything you could throw at it.
they go on ebay for 575 ish refurbished so that is a pretty good deal (since the msrp is $999.99)
now that may be more than you were wanting to spend but if not then that one would serve you very well.


05-06-2005, 01:32 AM
^^^Thanks a lot. Ill look into it.

05-06-2005, 01:59 AM
I don't know why you want to run external amplifiers so much...unless you have a few grand to throw into amplification, and it's really only worth it if you're running 200+wpc :)

05-06-2005, 05:59 PM
Im just trying to understand what they are for :(

I guess I thought of it like a car, where you can use the crappy hu power, or add a nice amp. It seems I am wrong.

05-06-2005, 06:24 PM
It's slightly different, at least for 5.1 channel audio - you see a lot more integrated setups.

Now, for 2 channel stuff, external preamps and power amps are common as dirt.

05-07-2005, 01:52 AM
For a 2 channel setup, theres 2 speakers and an amp, or just 2 speakers?

05-07-2005, 10:13 AM
theres 2 speakers and an amp


You need an amp to power the speakers, the laws of physics still hold true at home ;)

05-07-2005, 06:10 PM
Okay then.

What are some good bookshelf speakers to go with that onkyo receiver or one similar?

Should I look for a 2 way component?

PV Audio
05-07-2005, 06:53 PM
make ur own

05-07-2005, 07:02 PM


Or buy a good kit and assemble them yourself.

Check out the Exodus Audio kits on http://www.diycable.com

PV Audio
05-07-2005, 11:08 PM


Or buy a good kit and assemble them yourself.

Check out the Exodus Audio kits on http://www.diycable.com
have you FINALLY gotten the full ranges done?

05-08-2005, 03:40 PM
Whats all this stuff with crossover networks?
How would I go about making my own?

Are those exodus audio kits good from acoutic visions?