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my friend wants to sell me a 12" kicker comp vr sub and a rockford fosgate punch 500.2 amp and i was wondering if what hes selling me is good and for the price hes selling me. he's selling for $100 for the sub, and 150 for the amp. let me know if its a good deal. thanks

 
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$150 for the amp is a good price. $100 for the sub is high unless it comes in an enclosure already. You can get 2 of those same subs brand new on ebay for $150. Heres the problem though. The rockford amp 500.2 is rated at 500w x 1@4ohms. This is going to destroy that sub hands down!!. The comp vr's can only handle about 175-225 at the most rms. The only way you could get it to work is if the sub is dual 2 ohm voice coil. Then wire the voice coils in series to create a 4 ohm load. The amp is rated at 125w x 2@4 ohms. You can just use one channel of that and the sub will get about the right amount of power it needs. any more questions just ask!

mike

 
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Hmm...I dunno. 12" Comp VR is going for $150 new from Crutchfield...and their prices are higher than most places. You might actually be able to get a new one for $100. As for the amp, it's an awesome deal. If it's the punch 500.2, it's going for $350 from Crutchfield. If it's the Power 500.2, then it's going for $580. So either way, the amp is worth it...the sub is questionable. It's your call on the sub...but definately buy the amp. I mean, even if you don't use it, you can probably get at least $200 for it...more if you install it for somebody.

 
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Lol...looks like blah beat me to it! [IMG]i/expressions/laugh2.gif[/IMG]

 
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Grab the amp.. get better sub... a Pair of Cerwin Vega HED's can handle that power.. will bump a little harder than the comp VR's.. sound about the same.. can be had for $100 a pair at Best buy right now (so I've heard)

Cheers
Mohawk

BTW the HED's are the BEST sub for the $$$ there is.. it sounds better and bumps harder than most subs that cost over twice as much..pretty durable too.

Cheers
Mohawk

 
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yesterday was the last day. now they have fosgate punch for 100. but ya i'm sure it'll go on sale again.

ey mohawk, what would be louder?(i dont care too much about quality). 2 JL 12w6 or one 12" kicker L7? cause my friend has two jl audio's n i think its loud enough so i was wondering if one kicker L7 would match that or would be even louder than the 2 JL's.

 
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1 12" L7 in a large ported box with 1000 watts of "real power" will destroy 2 12" jl w6's. Guaranteed. Wont be the most accurate or tight bass in the world but will rattle your brains out!!

mike

 
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i have one 12" L7 powered by a Punch 500.... i have i wired for a 2 ohm load, and ITS FRICKIN LOUD!!!!!!!! The only thing is, that sub can take a lot more power, but right now im borrowing my friends 2 12" L7 subs, same wiring, SAME RESULT, FRICKIN LOUDER!!!!!!!!!!

Rattles everything in my car

 
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how does this sound....
1 12" L7, 2ohm dvc
powered by us acoustics usx600D... 200 x 1 @ 4 ohms but wire it at 1 ohm to make 600WRMS
or a JBL bp300.1... 150 @ 4 ohm but 600 @ 1 ohm

other subs i'm thinking about it fosgate punch hx2 or even the kicker L5

 
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I'd go with the JBL BP300.1. That's what I'm gonna get for two S12L7s (dual 4-ohm, all wired parallel for 1-ohm load).

 
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why dont you get the bp600.1? i think the bp300 is too small for two L7's

 
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Well, you see...the BP300.1 puts out 600RMS @ 1-ohm. Perfect for wiring two dual-4-ohm subs in parallel. Since the amp would be putting out 600RMS, and the L7s are 375RMS per coil...that would be more than enough.

 
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ya see thats only 300RMS per sub when they could handle 750.
with the bp600, you'll put out 600RMS per sub

 
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I just bought a L7 12" 4 ohm sub and i'm waiting on the amp.. i'm going to buy the kicker 500.2 2002 model from ebay this week. Sound like a good combination? The amp kicks out 500 watts bridged at 4 ohms.

 
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<< ya see thats only 300RMS per sub when they could handle 750.
with the bp600, you'll put out 600RMS per sub >>



You don't get it, do you? First off, I said that I'm gonna wire all four voice coils in parallel to get a 1-ohm load. Therefore, the amp will be putting out 600W RMS. Now, when you say each sub handles 750, that's for both voice coils combined. Each VC handles 375RMS. Also, I don't know if you know this...you don't divide the power between each sub/VC. If the amp puts out 600RMS, then it's 600RMS to each sub whether you have one sub, two subs, or four subs. It's all the same.

 
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<< If the amp puts out 600RMS, then it's 600RMS to each sub whether you have one sub, two subs, or four subs. It's all the same. >>



so if i have an amp thats 600wrms and i hook it up to 10 kicker L7's, then all ten are gunna be pushing 600WRMS? dont think so... each sub is gunna be pushing 60wrms

 
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<<

<< If the amp puts out 600RMS, then it's 600RMS to each sub whether you have one sub, two subs, or four subs. It's all the same. >>



so if i have an amp thats 600wrms and i hook it up to 10 kicker L7's, then all ten are gunna be pushing 600WRMS? dont think so... each sub is gunna be pushing 60wrms >>



Okay...listen. Yeah, if you hook too many subs to an amp, they are gonna be under-powered. If you hooked 10 L7's to the amp...they would technically still be getting 600RMS...but they would be getting very little current. Besides...don't you think that using 10 subs is a little extreme for your argument? I said 1, 2, or 4 subs...I never even said 5 subs, let alone 10. You can easily power four single-coil or two (maybe four...that might be pushing it) dual-coil subs on a fairly high current amp, such as the JBL Power Series mono sub amps, or Fosgate's Power BD series sub amps. I've had four subs hooked to my Clarion ProAudio (200RMS @ 4-ohms) before...all with 200RMS rating...and all hit very hard, without a hint of distortion. I even had them wired in series/parallel for a 4-ohm load. I mean, if what you are saying were true, then each sub would be getting 50RMS. That wouldn't have worked, obviously, because if you pushed 'em as hard as I did on only 50RMS, then they would be distorting terribly. If you don't agree with what I just said, then please don't reply. I hate arguing with people.

 
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Not to but in, but vnlilman is correct. Wiring 2 dual 4ohm voice coil L7's all in parallel will give you a 1 ohm load which is correct. But the bp300.1 600w x 1@1 ohm will split the power. Each SUB NOT VOICE COIL WILL BE GETTING 300 WATTS. You will be getting 150w per voice coil NOT 300w. Which may not be strong enough for you. I have 2 12" L7's getting 300 watts per sub off an pgzx600ti. And they are fine but that is also because im setup for sq not spl. If really hard hitting bass is what your after than i would definately give each sub AT LEAST 600 watts rms.

mike

 
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Umm...okay...but how do you explain the post directly above yours? I had four 4-ohm subs wired in series/parallel for a 4-ohm load on an amp that puts out 200RMS @ 4-ohms. I had four 12" Punch XLCs (200RMS) pushed to xmax with zero distortion, and very hard hitting bass. Like I said above, according to what you guys are saying, the subs would be recieving 50RMS per sub...but how can you possibly push a Punch XLC to xmax on 50RMS with no distortion?! I also tried (just for the hell of it...I was bored one day) wiring two 12" XLCs in series for an 8-ohm load. At 8-ohms, the amp should be putting out about 100RMS. I did the same exact thing with this setup. I was pushing these subs pretty good...but I noticed some distortion and lowered output due to the 100RMS going to the subs instead of the 200RMS. Now, according you what you are saying, the subs should have been getting 50RMS this way, the same way they did when I had four hooked up. Now, this makes no sense to me, as the subs hit a lot harder when I had four of 'em hooked up for a 4-ohm load, than it did when I had two for an 8-ohm load. That doesn't sound quite right. Four subs with 50RMS (according to you) being pushed to xmax no prob, while two subs with 50RMS (again, according to you) distort and don't put out as much volume?! I dunno...I'm not saying you're wrong...I'm just saying that if you're right, it makes absolutely no sense at all.

 
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dude your not making sense. but alright here's an explanation for the increased volume, that would be more surface area. the more surface area the better. about your other questions I don't know.

But I'm also pretty sure that an amp doesn't put out it's full power to each sub. When you wire in parrallel it allows you to connect to the amp as one sub running in bridged would. so the amp is putting out 200watts total, then the wiring splits that in two.

If you could run 4 subs all getting the full power of an amp don't you think that no one would bother buying a big amp. 250 watts would be more than enough, as that would run 4 JL 12W3s. hell, my 500watt amp would be massive.

 
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I meant increase volume per sub. Not total. I'll argue more with you guys tommorrow evening...I'm going to bed. [IMG]i/expressions/moon.gif[/IMG]

 
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Im done arguing. I know what im talking about, you dont install for 6 years and have a first class mecp certification and not know something as simple as this. The only last thing i will add is this. lets just say amp x has a rating of 1000w x 1@2ohms mono. Okay if i wire up a single sub at 2 ohms to this amp the sub will get 1000w. now lets say that you wire up 3 subs to get a 2 ohm load. see how the amp is rated at 1000x1. The one stands for 1 channel. Now you have 3 subs which would be 3 channels in an essence. hence you divide the amps output by 1/3 for each sub which would be 333 watts per sub. If your theory is correct then this is how amps would be rated.

1000w x as many as you want@2 ohms.

mike

 
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all i gotta say is, your trippin. i'm not hating or anything, just trying to help you out. i mean the bp300.1 would work fine but most people would go with bp600.1 to get the most out of each sub.

 
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When a charge moves at the rate of 6.25 x 10^18 electrons flowing past a given point per second, the value of the current is one ampere (A). This is the same as one coulomb of charge per second. If twice as many electrons moved past a given point per second, then the current would be 2 A. Where I is the current in amperes, 1I or one ampere of current develops .24 calorie (ohm) of heat or one ohm of opposition. So, the resistance-wire heating element in a 600-W toaster has a resistance of 24 ohms, with a 120-V source. 12V=2Ohms and 6 Amperes. Now, to determin the power in watts you use this formula. Power in watts=volts x amperes. So, 72 watts comes out of a 12 volt battery (12 x 6 = 72). For every 2 volts you go up, you go up 1 ampere. Here is a chart

Volts Amperes
2 1
4 2
6 3
8 4
10 5
12 6

I think you get the picture.. So if you want to find the amperes just divide the Volts by 2. 48 Volts/2=24 Amperes. So if you want 512 watts going to a sub, you need 32 Volts or 16I of current. I'm sure this will answer some of your questions. More paths means more resistance which means less watts. Don't think you are going to get 600watts for each sub from one amp.

 
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<< When a charge moves at the rate of 6.25 x 10^18 electrons flowing past a given point per second, the value of the current is one ampere (A). This is the same as one coulomb of charge per second. If twice as many electrons moved past a given point per second, then the current would be 2 A. Where I is the current in amperes, 1I or one ampere of current develops .24 calorie (ohm) of heat or one ohm of opposition. So, the resistance-wire heating element in a 600-W toaster has a resistance of 24 ohms, with a 120-V source. 12V=2Ohms and 6 Amperes. Now, to determin the power in watts you use this formula. Power in watts=volts x amperes. So, 72 watts comes out of a 12 volt battery (12 x 6 = 72). For every 2 volts you go up, you go up 1 ampere. Here is a chart

Volts Amperes
2 1
4 2
6 3
8 4
10 5
12 6

I think you get the picture.. So if you want to find the amperes just divide the Volts by 2. 48 Volts/2=24 Amperes. So if you want 512 watts going to a sub, you need 32 Volts or 16I of current. I'm sure this will answer some of your questions. More paths means more resistance which means less watts. Don't think you are going to get 600watts for each sub from one amp. >>



what the hell did he just say? i only understood the last part "Don't think you are going to get 600watts for each sub from one amp"

 
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<< When a charge moves at the rate of 6.25 x 10^18 electrons flowing past a given point per second, the value of the current is one ampere (A). This is the same as one coulomb of charge per second. If twice as many electrons moved past a given point per second, then the current would be 2 A. Where I is the current in amperes, 1I or one ampere of current develops .24 calorie (ohm) of heat or one ohm of opposition. So, the resistance-wire heating element in a 600-W toaster has a resistance of 24 ohms, with a 120-V source. 12V=2Ohms and 6 Amperes. Now, to determin the power in watts you use this formula. Power in watts=volts x amperes. So, 72 watts comes out of a 12 volt battery (12 x 6 = 72). For every 2 volts you go up, you go up 1 ampere. Here is a chart

Volts Amperes
2 1
4 2
6 3
8 4
10 5
12 6

I think you get the picture.. So if you want to find the amperes just divide the Volts by 2. 48 Volts/2=24 Amperes. So if you want 512 watts going to a sub, you need 32 Volts or 16I of current. I'm sure this will answer some of your questions. More paths means more resistance which means less watts. Don't think you are going to get 600watts for each sub from one amp. >>




DAMN IT MAN....... English!!!![IMG]i/expressions/face-icon-small-confused.gif[/IMG]

 
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yea, i can kind of follow that. lol.

 
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Damn it... i thought i did a good job.. sorry the chart didn't add in the spaces..