combatprojex
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Registered: 12th Oct 03
Location: Wellingborough Drives: Corsa 1.2 16v & proud of it
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just bought a mono block amp to run my 2 alpine swr 1021 subs but i dont think i have wired them up correctly
can someone please help me find out what i have done wrong
on the sub it has 2 -ve's and 2 +ve's think they're 2ohm subs.
have read some previous posts but not really understanding the theory
thank you
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combatprojex
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Registered: 12th Oct 03
Location: Wellingborough Drives: Corsa 1.2 16v & proud of it
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btt
[Edited on 08-09-2004 by Richie]
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
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whats the model of the monoblock?
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CopyWrite
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Registered: 16th Apr 02
Location: South Walez
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so the sub is a DVC? (Dual Voice Coil)
If The subs are 2ohm u cud have problems. because both of these will give u less than a 1ohm impedance.
look at the wiring diagrams at the top of this forum.
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combatprojex
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Registered: 12th Oct 03
Location: Wellingborough Drives: Corsa 1.2 16v & proud of it
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it's a legacy LA3090D
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combatprojex
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Location: Wellingborough Drives: Corsa 1.2 16v & proud of it
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quote: Originally posted by CopyWrite
so the sub is a DVC? (Dual Voice Coil)
If The subs are 2ohm u cud have problems. because both of these will give u less than a 1ohm impedance.
look at the wiring diagrams at the top of this forum.
did look at them but didnt understand which one i should go for?
im a bit shit with audio gear
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CopyWrite
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Registered: 16th Apr 02
Location: South Walez
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"2 DVC Driver
Series/Parallel
When using a 4 Ohm Dual Voice Coil (DVC) subwoofer, the total impedance of this system is 4 Ohms."
this one....
I think it would be exactly the same except ur using 2ohm subs..but I've looked at ur amp & it's stable down to a 1ohm load.
Çheck with someone else first because I might be wrong.
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combatprojex
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Location: Wellingborough Drives: Corsa 1.2 16v & proud of it
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is the amp i got any good for the job or have i wasted my dosh?
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combatprojex
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Location: Wellingborough Drives: Corsa 1.2 16v & proud of it
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yeh thats similar to what i did
i did this
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Rob H
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Registered: 28th Oct 00
Location: Staffordshire Drives: Astra SRi
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quote: Originally posted by combatprojex
yeh thats similar to what i did
i did this
It might just be my misunderstanding of amps thats wrong, but if you bought a mono block amp, you only have one set of terminals (one +'ve, One -'ve). You've shown two sets .
You should have had a wiring diagram showing you how to wire them up when you had the subs. If you didnt there's one on alpines site under support in PDF format .
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
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what makes u think uve wired it wrong?
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CopyWrite
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Registered: 16th Apr 02
Location: South Walez
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some Monoblocks come with 2 sets of terminals though.
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combatprojex
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Registered: 12th Oct 03
Location: Wellingborough Drives: Corsa 1.2 16v & proud of it
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yeh mine has 2 sets?
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combatprojex
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Location: Wellingborough Drives: Corsa 1.2 16v & proud of it
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quote: Originally posted by Richie
what makes u think uve wired it wrong?
not loud!!!
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Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
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Ok just got my head around all this now. The reason why its not as loud is because you are only running the amp at 2 ohms, so it wont give its full power output.
Connecting up the subs voice coils in series will give you 4 ohm per sub. Then connecting both subs in parallel will only give you 2 ohms.
The lowest you could get your system down to is 1.25 ohms, which is better than nothing.
You will however have to wire the subs like this:
[Edited on 08-09-2004 by Richie]
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