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spuloo
04-23-2013, 01:43 AM
Hey guys. I have a new pioneer HU running 14 watts RMS per channel. My power budget doesn't really allow me to do a separate amp because I'm running underdrive pulleys that limit me to about what my sub amp puts out plus the HU's max power.

So I have no plans to amp the front and rear ever. Is there a decent low power component set you might recommend for the front? Got a 6-3/4" hole there and a 6x9 spot in the rear deck. I could do up to $200 per pair.

Thanks

mlstrass
04-23-2013, 05:20 AM
Look for the highest db sensitivity rating you can find. I've used JBL's that were 92db and they did well off HU power...

Popwarhomie
04-23-2013, 05:38 AM
Take off the under drive pulleys or get an overdrive alt pulley...

Gonzalez1988
04-23-2013, 10:57 AM
Get the alpine ktp-445u amp its a small amp that connects to your radio and you dont have to run any wires nor even run a power wire to your battery. I have it and it puts out some good power for my interior speakers and best of all it only cost me $100 brand new.

Gonzalez1988
04-23-2013, 11:00 AM
So instead of spending $400 on speakers spend $100 on the Alpine ktp-445u and another $150 on a component set and you will have a nice AMPED front stage for $250 maybe even less. Components are useless if they arent amped, might aswell pay half the price and buy coaxials if you arent gonna send the components atleast 50 watts.

mclerico83
04-23-2013, 11:14 AM
still better off getting a small power amp that puts out 50rms with little amp pull

US Acoustics USX 4065 | eBay (http://www.ebay.com/itm/US-Acoustics-USX-4065-/171022036699?pt=Car_Amplifiers&hash=item27d1b52edb)
amazing little amp with only 20 amp of fuses just like your headunit will sound a million times better than the headunit

US Acoustics USX 2080 | eBay (http://www.ebay.com/itm/US-Acoustics-USX-2080-/181122884003?pt=Car_Amplifiers&hash=item2a2bc3e1a3)
even better off getting a 2 channel run the front off the headunit and get comps for the rears :)

do not waste your time running components off headunit.

if i was you get the 2 channel us acoustic i have one its amazing designed by zed audio

US Acoustics USX 2080 | eBay (http://www.ebay.com/itm/US-Acoustics-USX-2080-/181122884003?pt=Car_Amplifiers&hash=item2a2bc3e1a3)
for the fronts

http://www.caraudio.com/forums/speaker-classifieds/566033-jbl-p660c-power-6-5-components.html
CTX65CS Image Dynamics New 6 5" Pro Component Speakers | eBay (http://www.ebay.com/itm/CTX65CS-IMAGE-DYNAMICS-NEW-6-5-PRO-COMPONENT-SPEAKERS-/120726132232?pt=Car_Speakers&hash=item1c1bd69608)
Powerbass 2XL-60.3C (http://www.carstereogiant.com/Powerbass-2XL-60-3C-p/2xl-60.3c.htm)
or if you want to go 3 way these are amazing for the deal
Amazon.com: I65C Incriminator Audio 6.5" 85W RMS Component Speaker System: Car Electronics (http://www.amazon.com/Incriminator-Audio-Component-Speaker-System/dp/B00B90NN6S)

for the rears get a nice high effeciency coaxil for rear fill to run off headunit

T3 Audio T69C 6" x 9" Coaxial Speaker Pair 269-096 (http://www.parts-express.com/pe/showdetl.cfm?partnumber=269-096)
Cadence CVLS69 6x9 600 Watt Competition 3 Way Speakers Crossovers 70 oz Magnets | eBay (http://www.ebay.com/itm/Cadence-CVLS69-6x9-600-Watt-Competition-3-Way-Speakers-Crossovers-70-OZ-Magnets-/350586613595?pt=Car_Speakers&hash=item51a0972f5b&vxp=mtr)
if you go with the 4 channel amp these speakers are basically unbeatable in midbass. amazing speakers for rear fill

mclerico83
04-23-2013, 11:17 AM
Amazon.com: Incriminator Audio I Series 6x9 Coaxials: Car Electronics (http://www.amazon.com/Incriminator-Audio-Series-6x9-Coaxials/dp/B005FYJB2E)

also nice pair of rear fill coaxils if going with 2 channel

spuloo
04-24-2013, 01:40 PM
Thanks for the suggestions. This should be more than enough for me to sift through.

I won't be taking off the pulleys. This car's primary purpose is a high efficiency eco driver. I get 55 to 60 mpg and it's not a hybrid.

I'm looking for a much better sound than stock by upgrading the HU and to very good low wattage speakers and I figure there should be some out there. I'm sure you guys have set me up for success. I'll let you know what I go with.

Popwarhomie
04-24-2013, 02:09 PM
Ahhh. Gotcha. What car? I

BrownVanMan
04-24-2013, 02:15 PM
yeah what car and even a low power 4 ch will help with SQ i know directed had a 4 ch that did like 25 watts per ch and was fused at 25 amps, you should see much if any pull at that point. plus then you have much better sounding equipment while saving power draw and weight

spuloo
04-24-2013, 02:45 PM
It's an 04 corolla I had to rebuild, and I put in some 12:1 pistons for better overall efficiency, lightwieght pulleys flywheel and crank, and one of those AEM water/methanol kits which lowers overalltemps (among other things) allowing you to tune to the most efficient fuel levels, where all of it is burned.

Most cars run rich. The cooling of the excess liquid fuel (even "atomized") keeps temps low enough to stop detonation. There are other mods. I took off the side views and mounted little convex ones on the frame internal, full underpan, lowered to reduce drag, wiper removal, higher top drive gear... Basically everything I can do to it so far.

I've got a welder friend who wants to help me chop the top to get it lower for aerodynamics. Seems a little overboard because of how expensive it normally is, but I'm not off to the idea of a friend being like "let me see what I can do." He's not an amateur, and it's not my primary vehicle, so it could be out of service for a little bit.

spuloo
04-24-2013, 04:57 PM
I'll have to start getting technical. I think a 100Watt (25Wx4 or 50Wx2 for front components) amp would work. I wouldn't count on anything more than that though unless I whipped out the old multimeter and figured out exactly how far I can go somehow. I don't want to start getting into an area where my battery is at its limits.

Subie
04-28-2013, 05:53 AM
I would get a pair of high efficiency above 90db coax speakers and all it a day.

zako
04-28-2013, 06:59 AM
Look for the highest db sensitivity rating you can find.

These are gamed a lot, and can't be verified without a formal test. At best, they should be ignored.

zako
04-28-2013, 07:04 AM
Hey guys. I have a new pioneer HU running 14 watts RMS per channel. My power budget doesn't really allow me to do a separate amp because I'm running underdrive pulleys that limit me to about what my sub amp puts out plus the HU's max power.

I honestly didn't get this part.. a speaker amplifier will use a fraction of what a subwoofer amplifier will use (when driven hard), so I don't see how your pulleys are a limitation of any kind. In any case, you will probably find that almost _any_ speaker will get loud on head unit power. The issue is with distortion. With a dedicated amplifier you know you shouldn't hear any amplifier generated distortion. With head unit power, the signal can easily get distorted before it is converted into a mechanical wave. A discerning ear will identify that something is off. In any case, if you want speaker with good sensitivity, consider Morel Maximo. A lot of people said they take very little power. Of course, they would still benefit from a good amplifier.

spuloo
04-28-2013, 06:05 PM
I honestly didn't get this part.. a speaker amplifier will use a fraction of what a subwoofer amplifier will use (when driven hard), so I don't see how your pulleys are a limitation of any kind. In any case, you will probably find that almost _any_ speaker will get loud on head unit power. The issue is with distortion. With a dedicated amplifier you know you shouldn't hear any amplifier generated distortion. With head unit power, the signal can easily get distorted before it is converted into a mechanical wave. A discerning ear will identify that something is off. In any case, if you want speaker with good sensitivity, consider Morel Maximo. A lot of people said they take very little power. Of course, they would still benefit from a good amplifier.

The underdrive pulleys turn the alternator slower and you get a lower charge. That means less power than before. Sub amp is 350W rms, and the head unit uses as much as 150W drawing as much as 1 amp (or so says the tech specs). I guess that's not all the time, so we'll see. I might pick up an amp that runs 50W x 4 used or something, and if it doesn't work out electrically, I could do something smaller for the fronts, I suppose. I do like what I'm reading about those maximos.

zako
04-28-2013, 10:39 PM
The underdrive pulleys turn the alternator slower and you get a lower charge. That means less power than before. Sub amp is 350W rms, and the head unit uses as much as 150W drawing as much as 1 amp (or so says the tech specs). I guess that's not all the time, so we'll see. I might pick up an amp that runs 50W x 4 used or something, and if it doesn't work out electrically, I could do something smaller for the fronts, I suppose. I do like what I'm reading about those maximos.


If you need to run 350watts to a sub stage, you could get away with an efficient 5-channel Class D amplifier, such as Alpine MRX-V70 or Polk D5000.5. Most of the time, they won't need to see even 50amps of current. Class D amplification is fairly efficient, and don't need that much current to play loud. A lot of alternators give you easily +100amps of current. Even with slower pulleys, what you lose due to slower pulley speed is not a big deal. Don't also forget the batteries. They're a great and still the most important source of current you have.