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View Full Version : setting up a hometheater with power supply questions?



sue bee
10-23-2006, 03:46 PM
does anyone have any feedback on power supplies, specifically the pyramid ones?
im thinking about getting one and running a system that will look like this:

1 sub, 300 watts rms
2, maybe 4 speakers, 100 watts rms each
maybe 2 midbass instead of 2 speakers, 150 watts each.

if i want to be able to hook up a tv to this, and a dvd player and all that, would i be able to do it with a hu?
if not, what are my options for a ht reciever?

should i go with a 5 chan amp?

how many watts rms amp can the power supply take?

any help is appreciated and suggestions are too.:naughty:

JimJ
10-23-2006, 03:47 PM
Don't ghetto it, please...


should i go with a 5 chan amp?

Ideally, you could go with a 5 channel amp and preamp/processor combo, but I'm not sure you're ready for that sort of thing yet...

Oh, and post in the right sections please :)

sue bee
10-23-2006, 03:47 PM
preamp? we're not on the same page.

i'm in college, you're out of control.

JimJ
10-23-2006, 03:49 PM
i'm in college, you're out of control.

I'm in college and out of control :D

How much are you looking to spend? That'll pretty much determine what you end up with...

ballstothewall
10-23-2006, 03:51 PM
I'm in college and out of control :D




:uhoh:

sue bee
10-23-2006, 07:29 PM
the less i spend the better.

i already have the sub and enclosure.

i need amp, processer, speaksm, + other stuff i havent accounted for

JimJ
10-23-2006, 07:32 PM
the less i spend the better.

Give me a number to work with :)

$500? $700?

sue bee
10-23-2006, 07:57 PM
$100. im not that concerned with the equipment as far as i am what type of equipment. i dont need recomendations for equip, but ill take them. i want to know the cheapest way to get a ht with a car subwoofer.

JimJ
10-23-2006, 08:00 PM
Go to Walmart and get a home theater kit in a box.

As for the sub, maybe you can take apart the sub that comes with it and find a way to hook your sub up to it.

sue bee
10-23-2006, 08:01 PM
no but really

JimJ
10-23-2006, 08:03 PM
no but really

That's really.

What do you expect for $100? :) It's hard to find decent 12VDC subwoofer amps for that price, much less 120VAC ones...

reneeb7363
10-23-2006, 08:04 PM
lawl... noob doesnt know who he is chattin with I 'spose...

respect the Jim, respect tha numbers! LOL! :laughing:

sue bee
10-23-2006, 08:28 PM
gesys. anybody got info?
i need a cheap system, 100 is arbitrary.

JimJ
10-23-2006, 08:41 PM
What do you want me to tell you?

If $100 is arbitrary, tell me what you can spend. Anything less than $150, and you're stuck with HTIB's. Sorry, but this stuff doesn't come free.

sue bee
10-23-2006, 08:51 PM
ok fine, $150-250. work in that range and give me options.

sue bee
10-23-2006, 08:52 PM
and ghetto is aok with me

JimJ
10-23-2006, 08:56 PM
ok fine, $150-250. work in that range and give me options.

OK.

Go with a couple 5.25" or 4" full range drivers from PE. Build small ported enclosures for them.

You can find a 5.1 capable receiver on Ebay for $50-75, you might need to do some digging though. A plate amplifier for the sub will run you in the $60-70 range for a small one, 200W at the most.

$200 is doable for what you're looking to do, but you're going to have to watch auctions like a hawk :)

sue bee
10-23-2006, 09:00 PM
but that means that the speaks are getting receiver power. here's what i want to do:

use car amp.
use pyramid power supply
incorporate my sub + enclosure.

i don't know how to do the speakers and i'm not building any enclosures.

??

JimJ
10-23-2006, 09:07 PM
but that means that the speaks are getting receiver power.

What's the problem with that?


i don't know how to do the speakers and i'm not building any enclosures.

So you're either going to have to learn or go the HTIB route like I mentioned before.

ballstothewall
10-23-2006, 09:08 PM
Receivers aren't that expensive, you'll have more of a headache with a gettto rigged setup. Spend a little extra cash, use full range drivers, a receiver, and buy a used plate amp.

lilmaniac2
10-23-2006, 09:11 PM
dude if u want home theater park your car in your garage and get a flip out tv...

sue bee
10-23-2006, 09:12 PM
so i gotta get all my **** off ebay?
i think i need 300 watts rms for my sub. how many watts for speakers? and what do i do about the enclosure for speakers?

JimJ
10-23-2006, 09:20 PM
so i gotta get all my **** off ebay?

Ebay, or specialty sites like Audiogon. You sure aren't getting anything new for that price.


how many watts for speakers?

Most 5.1 channel receivers will be between 40 and 100W, which is plenty.


and what do i do about the enclosure for speakers?

Build them. Think sub enclosures, only much smaller.

sue bee
10-23-2006, 09:21 PM
im in college, but i don't go to rets or anything.

can i just buy the enclosures for speakers they have at walmart?

sue bee
10-23-2006, 09:22 PM
also, do plate amps run at impedences? dumb question, i know

JimJ
10-23-2006, 09:31 PM
also, do plate amps run at impedences?

Yes.

Lowjacker
10-23-2006, 09:34 PM
Go to WWW.diyAudio.com and search for budget systems........and ask questions on specifics.......tons upon tons of information there.....

Flipx99
10-23-2006, 11:20 PM
I know it's a thread jack, but inline with the OP.

1) What are some good plate amps? My HTIB reciever only has one output for sub whereas most plate amps I see have a configuration more similar to car audio (R and L)

2) Why is plate amp reccomended over the power supply? because it does both? What if he already had an amp lying around? (or two?)

JimJ
10-23-2006, 11:25 PM
1) What are some good plate amps?

Parts Express has probably the best lineup.


My HTIB reciever only has one output for sub whereas most plate amps I see have a configuration more similar to car audio (R and L)

There are Y-adapters to split a single LFE connection to two RCA jacks.


Why is plate amp reccomended over the power supply? because it does both? What if he already had an amp lying around? (or two?)

Using an undersized bench power supply to run 12VDC amplifiers for home use is ghettofied at best...laughable and dangerous at worst. Maybe for temporary testing, OK...but for a real setup, it pays to do it right.

Flipx99
10-23-2006, 11:52 PM
Using an undersized bench power supply to run 12VDC amplifiers for home use is ghettofied at best...laughable and dangerous at worst. Maybe for temporary testing, OK...but for a real setup, it pays to do it right.

Which is a plate amp or a rack amp ( I think that is what it is called, like the Beringer)



gotcha!

JimJ
10-23-2006, 11:55 PM
Which is a plate amp or a rack amp ( I think that is what it is called, like the Beringer)

Yup. Rack amps have their own little quirks, like needing a seperate crossover as most of them don't come with one built in, and they may need mods to the fans to quiet them down. But once you get in the 600W range at low impedances, you can't beat them for value.