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View Full Version : Running 6.5 components off of HU



Cxrazy
02-02-2008, 08:25 PM
Hey guys,

I just got a new HU and it completely rules. Now I need new speakers, and I don't want to buy/mess with an amp to run them.

I'm looking for a 6.5 component set that will run well/loud off of 20W RMS.

Impossible? :rolleyes: I hope not.....:laugh:

ebrunn
02-02-2008, 09:27 PM
Impossible.

FOSGATE JOE
02-02-2008, 09:29 PM
then why get good comps??Get a good amp MAN trust me!!

FOSGATE JOE
02-02-2008, 09:30 PM
Hey guys,

I just got a new HU and it completely rules. Now I need new speakers, and I don't want to buy/mess with an amp to run them.

I'm looking for a 6.5 component set that will run well/loud off of 20W RMS.

Impossible? :rolleyes: I hope not.....:laugh:L.O.L;)

tcguy85
02-02-2008, 09:43 PM
you'll need more power for comps. you'll need more power even for certain coax's. 20 watts it just not enough for anything but possibly tweeters.

Cxrazy
02-03-2008, 12:36 AM
I guess it'll have to wait then.

I built my box for my sub today.

Spent waaay too much money this weekend on that/sub/amp.

if I get a 2x75w amp would that be enough?

Then some Phoenix Gold RSD's? Or whats another decent affordable brand?

tcguy85
02-03-2008, 12:42 AM
2x75 will be okay for the rsd's but i'd recommend a bit more.

Cxrazy
02-03-2008, 12:46 AM
Anyone have a 2 channel amp for sale real cheap like? :)

tcguy85
02-03-2008, 12:58 AM
i have a ZX550.2 for sale but i don't know if you'd consider it cheap. i'm looking to get $200 shipped.

Cxrazy
02-03-2008, 01:11 AM
Maybe $40 shipped is about my budget. :)

I'll look for an A/D/S on ebay.

tcguy85
02-03-2008, 01:12 AM
Maybe $40 shipped is about my budget. :)

I'll look for an A/D/S on ebay.

ok good luck.

skydeaner
02-03-2008, 01:47 AM
This is about the cheapest you will get that will satisfy the rsd's (http://cgi.ebay.com/Profile-AP1040-Car-Audio-Amplifier_W0QQitemZ280196460876QQihZ018QQcategoryZ 39739QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)

CrossFired
02-03-2008, 02:37 AM
Maybe $40 shipped is about my budget. :)

I'll look for an A/D/S on ebay.

I've got a nice Alpine I can ship you for $67. it's 60 watts per ch RMS, 2 channels.:)


If your new HU will run active? You could get the Pioneer Revs, run active using the four channel amp in the hu. It will sound good if you cross it over 80hz.:crazy:


http://farm3.static.flickr.com/2244/2239955963_c2760317fc_o.jpg

http://farm3.static.flickr.com/2194/2239955961_ab0d03cfd5_o.jpg

ebrunn
02-03-2008, 03:13 AM
If your new HU will run active? You could get the Pioneer Revs, run active using the four channel amp in the hu. It will sound good if you cross it over 80hz.:crazy:

Hope your joking about running an active set-up off the head units amp

CrossFired
02-03-2008, 03:53 AM
Hope your joking about running an active set-up off the head units amp

I did it for a guy with a Panasonic HU and it sounded really good. It was a Panasonic with the built in class D amp that puts out like 55 watts rms x4:eek:

I'm just saying it can be done until he gets a nice amp.:p:

ebrunn
02-03-2008, 04:00 AM
I did it for a guy with a Panasonic HU and it sounded really good. It was a Panasonic with the built in class D amp that puts out like 55 watts rms x4:eek:

I'm just saying it can be done until he gets a nice amp.:p:

What deck was that? Never herd of such a thing.

FOSGATE JOE
02-03-2008, 05:51 AM
x2

MisterGrubbs
02-03-2008, 06:04 AM
I've got a nice Alpine I can ship you for $49. it's 50 watts per ch RMS, 2 channels.:)


If your new HU will run active? You could get the Pioneer Revs, run active using the four channel amp in the hu. It will sound good if you cross it over 80hz.:crazy:

Took the words right outta my mouth. Well, kinda

I was going to suggest the cheapest 50+ rms 2chan amp you could find adn the Pioneer Revs. Get pretty **** loud and dont sound half bad, good price as well.

My vote is this guys little Alpine 50x2 rms and a set of Pioneer Revs ftw.

Come out just at like 175 shipped for that amp and the comps, IIRC

Ken448
02-03-2008, 09:19 AM
I run a set of Quart comps off a head unit, they sound ok, get loud eough for my wife backed by 2 12's.. They CAN be run off a HU but will perform much better off an amp.

Hell, come to think of it, my other truck (one I never drive) has Kicker Resolution components ran off a OEM unit and it rocks pretty good. Also backed by a single 12.....

Hook it up, give it a shot, and see if YOU like it. Not a bunch of strangers on a message board!

skydeaner
02-03-2008, 09:58 AM
I run a set of Quart comps off a head unit, they sound ok, get loud eough for my wife backed by 2 12's.. They CAN be run off a HU but will perform much better off an amp.

Hell, come to think of it, my other truck (one I never drive) has Kicker Resolution components ran off a OEM unit and it rocks pretty good. Also backed by a single 12.....

Hook it up, give it a shot, and see if YOU like it. Not a bunch of strangers on a message board!

very good post, because that is all that matters.

CrossFired
02-03-2008, 02:53 PM
What deck was that? Never herd of such a thing.

I dont know the model, it was top of the line about three to five years ago.

Panasonic had two HU's with this class d amp built in.:confused:

BrianChia
02-03-2008, 04:48 PM
Of course it's possible to run components off a head unit amp. Not everyone needs 200W per channel on their components.

BEAVER.989
02-03-2008, 05:01 PM
Of course it's possible to run components off a head unit amp.

Its possible to start a fire with a magnifying glass, but that doesn't mean it's the best tool for the job.

I appreciate where you're coming from, though. Anything is possible.

Cxrazy
02-03-2008, 05:13 PM
I might pick up some good components and if they're not getting loud enough for me I can always plug em into an amp.

I bet I'll need the midbass when my soundsplinter RP-L 12 gets in. :)

BrianChia
02-03-2008, 05:37 PM
Definitely not the best tool for the job. But there's no reason why it can't work if you are on a budget. Even when you are running off a 200W rated amp, most people are never running 200W into their speakers anyways. If it's turned up half way you might only be running 40W into your speakers. Just try to run off head unit power and turn it up a little louder.

99% of drivers run fine off of HU power with their stock speakers and their cars can still get pretty loud.

Unless you are trying to win a wattage contest (compensating?), or your car has extreme road/wind noise, or your speakers are terribly inefficient, then head unit power off a decent unit will probably work for the average listener just looking to improve their car's sound quality.

CrossFired
02-03-2008, 07:47 PM
Update on that amp! its 60 per side. I just hooked it up and it sound really nice!

http://farm3.static.flickr.com/2194/2239955961_ab0d03cfd5_o.jpg

njaykaplan
02-03-2008, 10:26 PM
I did it for a guy with a Panasonic HU and it sounded really good. It was a Panasonic with the built in class D amp that puts out like 55 watts rms x4:eek:

I'm just saying it can be done until he gets a nice amp.:p:


Closest i could find would be http://www.onlinecarstereo.com/CarAudio/ProductDetail.aspx?ProductID=18732
31 Rms x 4.. 75x4 max power.. I'm interested in doing it, but i have a bose system and i wont believe the bose amp puts out less than that.

CrossFired
02-03-2008, 11:29 PM
Ya, one of them was an 8803 with 70x4(31 RMS x 4). its not 55 like I thought but its better than the standard of 45x4(14 rms x 4).

Cxrazy
03-30-2008, 05:28 PM
Alright guys,

So I got an old yamaha amp(YPA-700) off or Craigslist for $30 bucks (woohoo!)

it does 70x2 for my front 2 speakers. I spent today wiring it all up, and I can DEFINately hear much more in the music, its much clearer, but when I turn it up I can hear how crappy the stock speakers are too.

Whats a good pair that will run excellently off of 70RMS and is around $120 MAX.

Try not to say the RSD's... ;) I'm looking for more variety.