Why does my new 6.5" sub have two sets of connectors instead of one?

agw_01 said:
http://www.caraudiodirect.co.uk/diamond-audio-2502-p-6018.html

http://www.caraudiodirect.co.uk/dynamics-s2002-p-5528.html

Here are a couple of 2 channel amps, I know the 2nd is a little out of your budget but it can supply decent power. You'll probably be best running one set of cables to one voice coil on each sub and then having a short cable run from the 1st voice coil to the 2nd.

That'll show the amp a 2 ohm load on each channel.
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Surely they still wont supply enough power given that my subs need a total of 500 watts (2x 250watts).

The Diamond one is:
# RMS @ 4 Ohm: 75 Watts x 2 = 150 Watts total
# RMS @ 2 Ohm: 125 Watts x 2 = 250 Watts total

and the SPL one is:
# RMS Power 4 Ohm: 2 x 100W = 200 Watts total
# RMS Power 2 Ohm: 2 x 160W = 320 Watts total
 
Ideally you'd run two, two channel amps in bridged mode for each sub. I don't think there's much of a cheaper option. It's not clear of any of the similar budgeted mono amps will power two subs atthat rated power.

Have you asked over at http://www.talkaudio.co.uk/ ?
 
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Yeah I asked them but didn't get much response at all.
It's a pain in the arse to be honest, I've got these two subs and boxes sat ready to go in to the car and nothing to power them!
 
daz said:
As far as I know, for best performance you do.

I still think a 1 ohm stable monoblock is the way to go with these... :o
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Sure if you want to wring every list drop of power from that amplifier. if your a bass head go for it!

MrSix said:
Surely they still wont supply enough power given that my subs need a total of 500 watts (2x 250watts).

The Diamond one is:
# RMS @ 4 Ohm: 75 Watts x 2 = 150 Watts total
# RMS @ 2 Ohm: 125 Watts x 2 = 250 Watts total

and the SPL one is:
# RMS Power 4 Ohm: 2 x 100W = 200 Watts total
# RMS Power 2 Ohm: 2 x 160W = 320 Watts total
Click to expand...
they dont NEED that amount of power, thats a maximum input of the drivers, be it thermally limited (voice coils) or travel limited (xmax of the drivers). in reality, you'd get away with half of that but YYMV
 
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You don't NEED to give the subs their full power. As long as you're careful with the gain on the amp, you shouldn't run into any issues.

I doubt you'd find an amp capable of giving them full power for your budget unless you went 2nd hand :)
 
Second hand isn't an issue really, I bought the amp for my last sub second hand and it's still going strong.
 
agw_01 said:
You don't NEED to give the subs their full power. As long as you're careful with the gain on the amp, you shouldn't run into any issues.

I doubt you'd find an amp capable of giving them full power for your budget unless you went 2nd hand :)
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Ive found by experience that giving a subwoofer atleast double its rated power they really come to life. Also a smaller speaker is less efficient than a larger one.

ED have an amp themselves you could use.

And i wasnt joking about the genesis amp, you can pick them up second hand. A Genesis Profile Sub amp went for £90 on ebay last week, I know this as i got the Second Chance offer on it. that does 550w into a 2 ohm load and would sound AWESOME provided you have the right box for the subwoofer.
 
Not on one channel, no.

If you think, each voice coil is 4 ohms. If you've got two voice coils, that's putting a 2 ohm load on the amp (4ohms/2vcs = 2ohms). If you then add another dual voice coil 4 ohm sub to that, you're doubling the amount of resistance on the channel, showing the amp 1 ohm (4ohms/4vcs = 1ohm).

Hope that makes sense. I am the sux0rz at explaining these things.
 
mejinks said:
Yes, but you only use one voice coil on each
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About that, as I've seen it mentioned a few times... running one voicecoil on a dual VC sub... doesn't that only use half the potential of the sub therefore making it a bit pointless?

I've got a DVC sub in my car, but I've only ever ran it with both voice coils connected. I might try it with one coil and see what difference it makes.
 
Out of the fusion and the pioneer, which would you go for?
Even though it's cheaper, I'm drawn towards pioneer over fusion purely because of the stigma attached to both companies.
 
Definitely Pioneer out of those two. Preferably neither though :)

Spend a bit more and get something of 'decent' quality.

The THD (Total Harmonic Distortion) is something to look at too.

The Pionner states a 'distortion' figure (doesn't state THD so could be anything) of 0,015 %, the Diamond is THD: <0.2% and the SPL is THD (A-weight): < 0,08%.

Don't underspec an amp, you'll pay for it in the long run.

edit... £80 for two? They're £55 each aren't they? How'd you get them for that price?
 
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