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Joined: Oct 2002
Posts: 125
CEG\'er
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OP
CEG\'er
Joined: Oct 2002
Posts: 125 |
Hey guys, I am tired of no lows in my car and so I decided to finally buy some subs. I didn't spend much, in fact here is the link to what I bought off ebay: Enclosed Bandpass 12" Subs They may even be crappy subs, but since others that bought the product have said good things and they are already enclosed in a decent box, I decided to buy them. Please note that I'm not going for overkill or even where somebody has to hear my system, I'm just going for something that sounds good and will provide the lows I need in my car. I am currently running 4 Pioneer 3-Way 6x8's powered by my DEH-P7300 Headunit. This headunit provides high-voltage subwoofer output (5V I think) and has both a built-in low-pass filter for my door speakers (which I will use once I install these subs) and a high-pass filter for the subs. I take it I will not need to use this since the amplifier will have a built-in crossover (I think that is what I need, right?). Basically I need recomendations on what brand Amplifier, the wattage I need, if it needs to be 2-channel or 4-channel (I assume 2-channel if I'm just using it to run 2 subs). I have a degree in computer and electrical engineering so I will understand your talk about current, voltage, and anything else, but I have never done an amplifier/sub install (and I'm not, I'm having a trusted source do this for me) so I need tips from you audio geniuses.
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Joined: Oct 2003
Posts: 294
CEG\'er
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CEG\'er
Joined: Oct 2003
Posts: 294 |
well whether or not you want to be heard or not, your probly going to be in a bandpass box. hehe. please not that bandpass boxes get loud, the sound quality on most is below par. but anyway, on to the amp. we need to know how many voice coils each sub has, how many ohms each sub is, and how many watts(make sure its a rms rating, not max) each sub can handle. i'm probly gonna say a jbl mono amp, but i dont know which one, until you give us more specs. you can get either 4 channel 2 channel, or mono channel for your subs. however i would go with mono channel, its just plain eaiser. both subs are going in the same box right? well wire the subs together, the wire the single channel of the amp to the terminals on the box. keep it simple. 
blue 95 se MTX
alpine 9805
2 diamond 12" cm3's tuned to 38 hz
4 pioneer 3-ways(POS)
jbl bp1200.1
pimpin hoes, like the river flows..... constantly!
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Joined: Oct 2002
Posts: 125
CEG\'er
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OP
CEG\'er
Joined: Oct 2002
Posts: 125 |
Alright, it's 350W RMS (700W Peak) for each sub. They are already wired together in an enclosed bandpass box, with two terminals mounted on the box. I am waiting for the seller to tell me how many Ohms the subs are rated for and how many voice coils each sub has.
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Joined: Sep 2003
Posts: 63
CEG\'er
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CEG\'er
Joined: Sep 2003
Posts: 63 |
I have the basically same head unit but the Premier model. I use the crossover on the head unit because it lets you control the volume of the sub from inside the car.
1998.5 CSVT
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Joined: Mar 2003
Posts: 123
CEG\'er
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CEG\'er
Joined: Mar 2003
Posts: 123 |
Some might disagree, but i always run Fosgate amps, ive owned three and they have never let me down.
'00 CSVT silver frost
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Joined: Jan 2002
Posts: 858
Veteran CEG\'er
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Veteran CEG\'er
Joined: Jan 2002
Posts: 858 |
Originally posted by SVT Amateur:
Alright, it's 350W RMS (700W Peak) for each sub. They are already wired together in an enclosed bandpass box, with two terminals mounted on the box. I am waiting for the seller to tell me how many Ohms the subs are rated for and how many voice coils each sub has.
Most likely the subs are both 8 ohms, and wired in parallel, for a 4 ohm load. Majority of pre-fabbed boxes work this way. I would recommend JBL amps.. but i'm not sure if those subs may be overrated.
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Joined: Aug 2002
Posts: 8,281
Captain Impound Boy
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Captain Impound Boy
Joined: Aug 2002
Posts: 8,281 |
if your looking to stay in a budget as the subs seem to point out i would say the jbl's also... i wouldn't waste money on a class a amp as you won't notice the difference since its bandpass...
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Joined: Oct 2003
Posts: 294
CEG\'er
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CEG\'er
Joined: Oct 2003
Posts: 294 |
well, i just had time to actually look at those subs. i didnt even know q-logic made subs, pretty nice looking for under $100, but i doubt the sound quality is very great. but even if they were, you wouldnt hear it in that box. but for the amp, im gonna probly say a jbl 180.2 dont go out and buy it yet, cus we still dont have the ohm or voice coil specs. but i wouldnt give those subs 350 each, i doubt they can handle it. If you just give those subs 180 wrms a piece, they are going to be much louder than you probly think. especially in that box. and i dont think any amp can compare for around $150 shipped. hey dont forget to order a wiring kit as well, hit up knukonceptz.com for that.
blue 95 se MTX
alpine 9805
2 diamond 12" cm3's tuned to 38 hz
4 pioneer 3-ways(POS)
jbl bp1200.1
pimpin hoes, like the river flows..... constantly!
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Joined: Oct 2002
Posts: 125
CEG\'er
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OP
CEG\'er
Joined: Oct 2002
Posts: 125 |
Yeah guys, thanks for the help. This is a very cheap setup in order to get me started in audio. I couldn't find any decent JBL amps for a cheap enough price so I just bought a nice (at least nice for the price) Pioneer Amp that puts out 360W continous power at 4 ohms (oh, I forgot to mention that the subs are wired together for a 4 ohm load with a single voice coil for each sub) and 720W peak power at 4 ohms. I bought the amp off ebay refurbished with 90 day warranty for $78 which I think is a steal, and I won't get an amp kit, I'm going to take care of that with my installer. I'll let you know how the install goes and how it sounds after I get it all setup. Thanks again for your help.
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