so i put in a new sub and i can barely hear it..

[oboytroyman]

I bought a kicker compvt 6.5 inch 150rms 300w maz 4ohm subwoofer online and it's working...but for some reason i can't even tell i have a sub back there...sounded same with no sub. the old one i figured was blown so i replace it...and when the old one was in you could tell it had a lot of power when it wasn't blown. What am i doing wrong..this sub should be sounding way better..? new amp? my neighbor bought a cheap sub and hooked it up to his stock sho amp and it sounds awesome...what's going on with mine?

 

[kevinspann]

The amp certainly could be dead too. It was in my Explorer after I changed the sub. If your neighbor has the same amp in his car, swap them out and see if it works. Its the silver one.

 

[93rev2sev]

You've got a 400w 4 ohm sub running off of a 25-35w 6ohm amp. The only sound I would expect out of that setup would be faint laughter.

Is everything stock but the sub?

 

[jmpSHO]

Just what 93rev2sev said, with a stock amp you won't even notice it's there.

 

[SuperHO]

dammit, he beat me to it. another thing to consider is enclosure volume. if the box has too much air space for the sub, output's gonna suffer. also make sure the polarity on the sub's correct. if you wired it up reverse, it'll cancel out the bass from the rear deck speakers and you won't hear a damn thing.

 

[the4biddendonut]

Box volume shouldn't be an issue. Get a bigger amp.

Model- Kicker CVT65

Size (IN.,CM)- 6-1/2, 16.5
Impedance (OHMS)- 2 or 4
Max Rec Amplifier Power (WATTS PEAK/RMS)- 300/150
Frequency Response (Hz)- 25-350
Mounting Depth (IN.,CM)- 2-7/8, 7.3
Mounting Cutout (IN.,CM)- 5-9/16, 14
Min Rec Sealed Box Volume (CU. FT., Liters)- .2, 5.7
Max Rec Sealed Box Volume (CU. FT., Liters)- 3, 85
Min Rec Vented Box Volume (CU. Ft., Liters)- Not Recommended
Max Rec Vented Box Volume (CU. Ft., Liters)- Not Recommended

 

[oboytroyman]

kicker sub

actually it sounds pretty sweet in the trunk but cant hear alot in the car haha. any amp recommendation. ive seen a 110 dolalr rockford fosgate amp that's 150rms 300max at 4ohms..perfect for this sub. also i didn't put the top part on my new sub...will that make performance suffer?

 

[oboytroyman]

also, it's the right size sub for the box so i figure box volume shouldn't be an issue

 

[the4biddendonut]

The rule of thumb is that you should size your amp a bit bigger than the sub is rated for. So, a 200 watt (RMS) amp would work great. Don't even look at the max power ratings, they're just there to make the equipment look good on the box.

Rockford makes decent equipment. So does Alpine, Memphis, JBL (aftermarket JBL is actually very nice), Crossfire, Eclipse, and MTX. Those are all middle of the line brands that I would recommend. There are plenty of good brands out there, just stay away from brands like Legacy, Pyramid and Polk.

actually it sounds pretty sweet in the trunk but cant hear alot in the car haha. any amp recommendation. ive seen a 110 dolalr rockford fosgate amp that's 150rms 300max at 4ohms..perfect for this sub. also i didn't put the top part on my new sub...will that make performance suffer?

Are you talking about the grill cover? If you're talking about the grill, that won't matter one bit. It's just there to protect it from physical damage if you so choose to install it.

 

[SuperHO]

by top part, are you referring to the seal thingy between the box and the rear deck? if so, that'll make a difference. you see, sub-bass frequencies are like high-schoolers. unless given some direction, they'll just scatter when it's time to perform. that's why subs sound best when mounted all the way to the back of the trunk. it deflects the frequencies before they have a chance to cancel ou and pushes them into the car's cabin. put that snout back on and see if you can tell a difference.

 

[Eric VerValin]

Faint laughter... lolz

 

[Racer X]

You've got a 400w 4 ohm sub running off of a 25-35w 6ohm amp. The only sound I would expect out of that setup would be faint laughter.

Is everything stock but the sub?

This made me laugh.

 

[Eric VerValin]

Tom's a keeper... good comedy is hard to find.

 

[NP SHO]

dammit, he beat me to it. another thing to consider is enclosure volume. if the box has too much air space for the sub, output's gonna suffer. also make sure the polarity on the sub's correct. if you wired it up reverse, it'll cancel out the bass from the rear deck speakers and you won't hear a damn thing.

This shouldn't matter. If the sub is wired backwards (polarity reversed) it will "pull" instead of "push" when the bass hits, but the sound itself should not be affected. x100 for the new amp though. Definitely need more power.

The rule of thumb is that you should size your amp a bit bigger than the sub is rated for. So, a 200 watt (RMS) amp would work great. Don't even look at the max power ratings, they're just there to make the equipment look good on the box.

^^x2. You want to get an amp with a higher power rating than the sub, otherwise you're gonna be running the amp at max power all the time. Always go bigger because you can turn the gain down. You'll get better sound and you won't **** your amp from running it maxed out all the time.

 

[FastAndFurious]

Your neighbor might have a subwoofer that has pretty high sensitivity. CompVT 6.5 sub has 84.6 dB @1W, 1m.

 

[oboytroyman]

anyone know where to find a good 200w rms mono amp? crutchfield has some for like 300 bucks. no way im spending any more than 200 out the door for this amp.

 

[oboytroyman]

how about this amp...paired with a 6 inch kciker sub 150 rms watts @4ohms

http://www.crutchfield.com/p_777M1350/Sound-Ordnance-M-1350.html

 

[the4biddendonut]

Never heard of the brand. Try this one. http://www.crutchfield.com/p_500MRPM500/Alpine-MRP-M500.html?tp=35834

A cheaper amp could be found if you had the 2 ohm version of that sub.

 

[FastAndFurious]

I bought my amp at millionbuy.com.

http://lib.store.yahoo.net/lib/millionbuy/amplifier.htm

It's the cheapest online store I could find that time.

There are some never heard of brands, but there are nice brand amps as well.