Another Sub and amp combination , wiring doubt ? - Team-BHP

929RON · 30th July 2006, 15:27

One of my friends is fitting a pair of dual 4 Ohms Kicker L5s with a 2 Channel Audiobahn A8002T , the bridged power @ 4 Ohms is 800 RMS, now how should we wire this to get the final Impedance as 4 Ohms, as If we wire S1(C1=C2)||S2(C1=C2) the impedance is 4||4 = 2 Ohms, how do we achieve 4 Ohms, any Ideas ? Can the two subs be wired in series to other ?
Experts, If my calculations were wrong tell me what is right ?

Sam Kapasi · 30th July 2006, 16:10

If it were a mono amp - What I would suggest is that you wire each coil in series with each other, thereby giving you 2 woofers of 8 ohms each. Together in parallel they will give you 4 ohms.

Otherwise, you can wire them in parallel so giving you 2 subs of 2 ohms each and you connect them to the amp, non-bridged. One sub on the left and one on the right. That is easier to do and should sound the same.

Bass&Trouble · 30th July 2006, 19:01

Wrong sub-amp combination. Get another sub, or get another amp. Right now, the only option you have is to drive just one coil of the sub with the amp.

The Audiobahn amp in concern is a Class AB mono amp and is not stable below 4 ohms. For the budget and the configuration, I think you would be better off using the Audiobahn A12005DN which is a Class D monoblock with 600W rms output at 2 ohms. See if you can get the amp changed.

929RON · 30th July 2006, 19:34

Can we do something like this ? each sub here is a single coil sub , so we can consider each coil to represent a sub in the below diagrams.

What will be the final Impedance for this setup ?

Bass&Trouble · 30th July 2006, 19:45

The diagram says 4 ohm at the amp, so each of those single coice coil subs is a 4ohm sub. Each of 2 pairs is paralleled to achieve 2 ohms and then serialled at the amp to get 4 ohms again. This is similar to 2 x 4ohm DVC subs in all impedance matters. And so, if you buy another one of those dual 4ohm subs,you can also achieve exactly this.

929RON · 30th July 2006, 19:49

Yeah we have it, it is not 1 L5, its a pair of L5s

Bass&Trouble · 30th July 2006, 19:56

Quote:

Originally Posted by 929RON

Yeah we have it, it is not 1 L5, its a pair of L5s

I didn't notice the word 'pair' in your first post. I thought you were referring to the voice coils. Sorry!

No troubles, just hook it up the way it's shown in that diagram.

low_bass_makker · 31st July 2006, 15:12

Quote:

Originally Posted by Bass&Trouble

I didn't notice the word 'pair' in your first post.

Man ur forgetting ur pair what will happen if i go away for too long........

Bass&Trouble · 31st July 2006, 16:22

Quote:

Originally Posted by low_bass_makker

Man ur forgetting ur pair what will happen if i go away for too long........

I shudder to think, thank you for the support, and please perish the thought of going away again.

929RON · 2nd August 2006, 02:04

This is one of the setups we are trying for a Skoda RS , it was running on a RF T10001bd which is 1 Ohm Stable
Now plan is to fit a T20001bd which we just got down in the same car which is 1 Ohm stable again with 3 Audiobahn ALUM12N subs, they are 1000 RMS Dual 6 Ohm subs,

Now, how do we wire this ?

S1(C1||C2)||S2(C1||C2)||S3(C1||C2)

=> 3Ohms||3Ohms||3Ohms

=> ????

Is it 1 Ohm or something else, Experts ???

low_bass_makker · 2nd August 2006, 03:36

it will be 1 ohms and u can connect them like this...

but one thing u have to see that the output of both the amps are equal.....

And yaar why always make a new thread when u can continue in the older thread mods plz do the necssary changes....

navin · 2nd August 2006, 11:23

the only other option wold require strapping amplifiers this was discussed on this forum some time back. a seach might help.

If strapping can be done i'd suggest using these subs wired to 9 ohms.

http://www.cartel.fr/IMG/pdf/JackHam...ers-manual.pdf

or page 10 of this manual
http://www.kicker.com/06/tech-suppor...DAmpMANUAL.PDF

Autophile · 2nd August 2006, 12:21

Quote:

Originally Posted by 929RON

Is it 1 Ohm or something else, Experts ???

It is 1 Ohms Exact !!!

929RON · 2nd August 2006, 12:25

Thanks for all the replies, but , the installation will not have 2 amps, its just one RF T20001bd, so according to Autophile its exact 1 Ohm,
cool, then We will get it setup , this is going to be ONE LOUD Setup,

low_bass_makker · 2nd August 2006, 12:40

ron the T20001bd is 2000 watts rms in 1 ohms so the amp will be under powered in ur case if u go for a single amp. In this way u will be getting the full juice out of the amp but the woofers can take more.....so think again when going for this setup.

OT which type of enclousre ur going to use......sealed , ported , band pass, or a single box with all the subs in it with no partitions

30th July 2006, 15:27	#1 (permalink)
929RON BHPian Join Date: Jul 2006 Location: KS CITY Posts: 114 View My Garage	Another Sub and amp combination , wiring doubt ? One of my friends is fitting a pair of dual 4 Ohms Kicker L5s with a 2 Channel Audiobahn A8002T , the bridged power @ 4 Ohms is 800 RMS, now how should we wire this to get the final Impedance as 4 Ohms, as If we wire S1(C1=C2)\|\|S2(C1=C2) the impedance is 4\|\|4 = 2 Ohms, how do we achieve 4 Ohms, any Ideas ? Can the two subs be wired in series to other ? Experts, If my calculations were wrong tell me what is right ?

30th July 2006, 16:10	#2 (permalink)
Sam Kapasi Distinguished - BHPian Join Date: Jul 2005 Location: Bombay (but watch this space) Posts: 7,211 View My Garage	If it were a mono amp - What I would suggest is that you wire each coil in series with each other, thereby giving you 2 woofers of 8 ohms each. Together in parallel they will give you 4 ohms. Otherwise, you can wire them in parallel so giving you 2 subs of 2 ohms each and you connect them to the amp, non-bridged. One sub on the left and one on the right. That is easier to do and should sound the same. __________________ Live the YetiLife®

30th July 2006, 19:01	#3 (permalink)
Bass&Trouble Senior - BHPian Join Date: Mar 2006 Location: Bombay Posts: 2,296	Wrong sub-amp combination. Get another sub, or get another amp. Right now, the only option you have is to drive just one coil of the sub with the amp. The Audiobahn amp in concern is a Class AB mono amp and is not stable below 4 ohms. For the budget and the configuration, I think you would be better off using the Audiobahn A12005DN which is a Class D monoblock with 600W rms output at 2 ohms. See if you can get the amp changed. __________________ Operator! Give me the number for 911!

30th July 2006, 19:45	#5 (permalink)
Bass&Trouble Senior - BHPian Join Date: Mar 2006 Location: Bombay Posts: 2,296	The diagram says 4 ohm at the amp, so each of those single coice coil subs is a 4ohm sub. Each of 2 pairs is paralleled to achieve 2 ohms and then serialled at the amp to get 4 ohms again. This is similar to 2 x 4ohm DVC subs in all impedance matters. And so, if you buy another one of those dual 4ohm subs,you can also achieve exactly this. __________________ Operator! Give me the number for 911!

2nd August 2006, 02:04	#10 (permalink)
929RON BHPian Join Date: Jul 2006 Location: KS CITY Posts: 114 View My Garage	Subwoofer wiring again This is one of the setups we are trying for a Skoda RS , it was running on a RF T10001bd which is 1 Ohm Stable Now plan is to fit a T20001bd which we just got down in the same car which is 1 Ohm stable again with 3 Audiobahn ALUM12N subs, they are 1000 RMS Dual 6 Ohm subs, Now, how do we wire this ? S1(C1\|\|C2)\|\|S2(C1\|\|C2)\|\|S3(C1\|\|C2) => 3Ohms\|\|3Ohms\|\|3Ohms => ???? Is it 1 Ohm or something else, Experts ???

30th July 2006, 19:34	#4 (permalink)
929RON BHPian Join Date: Jul 2006 Location: KS CITY Posts: 114 View My Garage	Can we do something like this ? each sub here is a single coil sub , so we can consider each coil to represent a sub in the below diagrams. What will be the final Impedance for this setup ?

30th July 2006, 19:49	#6 (permalink)
929RON BHPian Join Date: Jul 2006 Location: KS CITY Posts: 114 View My Garage	Yeah we have it, it is not 1 L5, its a pair of L5s

2nd August 2006, 03:36	#11 (permalink)
low_bass_makker Senior - BHPian Join Date: Mar 2006 Location: Faridabad Posts: 6,042 View My Garage	it will be 1 ohms and u can connect them like this... but one thing u have to see that the output of both the amps are equal..... And yaar why always make a new thread when u can continue in the older thread mods plz do the necssary changes....

2nd August 2006, 11:23	#12 (permalink)
navin Team-BHP Support Join Date: Mar 2004 Location: mumbai Posts: 12,576	the only other option wold require strapping amplifiers this was discussed on this forum some time back. a seach might help. If strapping can be done i'd suggest using these subs wired to 9 ohms. http://www.cartel.fr/IMG/pdf/JackHam...ers-manual.pdf or page 10 of this manual http://www.kicker.com/06/tech-suppor...DAmpMANUAL.PDF __________________ Scixelsyd Etinu Last edited by navin : 2nd August 2006 at 11:41.

2nd August 2006, 12:25	#14 (permalink)
929RON BHPian Join Date: Jul 2006 Location: KS CITY Posts: 114 View My Garage	Thanks for all the replies, but , the installation will not have 2 amps, its just one RF T20001bd, so according to Autophile its exact 1 Ohm, cool, then We will get it setup , this is going to be ONE LOUD Setup,

2nd August 2006, 12:40	#15 (permalink)
low_bass_makker Senior - BHPian Join Date: Mar 2006 Location: Faridabad Posts: 6,042 View My Garage	ron the T20001bd is 2000 watts rms in 1 ohms so the amp will be under powered in ur case if u go for a single amp. In this way u will be getting the full juice out of the amp but the woofers can take more.....so think again when going for this setup. OT which type of enclousre ur going to use......sealed , ported , band pass, or a single box with all the subs in it with no partitions Last edited by low_bass_makker : 2nd August 2006 at 12:56.

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