Connect a Dual 2-ohm voice subwoofer
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=75372
Printed Date: April 25, 2024 at 10:15 PM
Topic: Connect a Dual 2-ohm voice subwoofer
Posted By: bigwest4085
Subject: Connect a Dual 2-ohm voice subwoofer
Date Posted: March 30, 2006 at 8:42 AM
Hi i just bought a Power Acoustik Mofo-15 and i have a 2 channel amp and im not sure how to hook it up here is the link of the subwoofer and the amp i bought please help me out thnks subwoofer- https://www.cardomain.com/item/POWMOFO15?ref=bizrdf
Amp- https://www.cardomain.com/item/POWTS19202
thank you..
Replies:
Posted By: haemphyst
Date Posted: March 30, 2006 at 9:05 AM
One channel to each voice coil, OR voice coils wired in series, and bridge the amp. Easy-peasy, lemon-squeezy!
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: Velocity Motors
Date Posted: March 30, 2006 at 9:21 AM
You can wire it only in a 4 ohm load. The amp is not capable of a 1 ohm load. Option 2 (series) = 4 ohm load
Voice coils wired in series
Recommended Amplifier: Stable at 4, 2, or 1 ohm mono | 
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------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: haemphyst
Date Posted: March 30, 2006 at 11:17 AM
Velocity Motors wrote:
You can wire it only in a 4 ohm load. The amp is not capable of a 1 ohm load.
orrrrrr...
haemphyst wrote:
One channel to each voice coil, OR voice coils wired in series, and bridge the amp. Easy-peasy, lemon-squeezy!
Jeff is NOT wrong in his suggestion, let me put that out there first. However, the way I would read his post is that his suggestion is the only way. It can be done either way. It is not mandatory to bridge the amplifier. One channel to each voice coil is the same load as the photo above, (a 2 ohm load per channel - max load for that amplifier) and the wiring will not be as (potentially) confusing for you if you are completely new at this. You WILL NOT damage the woofer or the amp doing it this way, either. You MAY/MIGHT/COULD suffer about a .1dB loss in absolute output, but will you notice? That answer, my friend, is a RESOUNDING "no!"------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: bigwest4085
Date Posted: March 30, 2006 at 5:05 PM
OK thank you soo much....so you are saying that you should connect each voice coil to one channel so the subwoofer have 2 red things and 2 black things..connect one blue&black to one channel on the amp and the other blue&black to the other channel and that way it is using all the amp and all the subwoofer....i have not clue about subwoofer stuff..thank you..
Posted By: forbidden
Date Posted: March 30, 2006 at 5:09 PM
There are two ways to properly wire this sub as both of the guys have described. That said, for ease of wiring, it is best to wire it the way that Jeff posted with his diagram above.
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Top Secret, I can tell you but then my wife will kill me.
Posted By: bigwest4085
Date Posted: March 30, 2006 at 5:13 PM
Ok it just does not seem right to put a wire thorugh a + and a - and then just connect one of the two coils to the amp...would the amp over heat or burn or blow out if i did it the other way??? thank you...
Posted By: stevdart
Date Posted: March 30, 2006 at 5:45 PM
 ^^^^
That's like doubting Shakespeare knows how to write. ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: forbidden
Date Posted: March 30, 2006 at 5:57 PM
Reading your last post to me at least still says that you are looking at things wrong. Your sub has two coils. You are not using one coil but half of one and half of the other. If you look at the diagram that Jeff posted, the + and - on the top of the speaker is one coil, the - and + on the bottom of the speaker is the other coil. Pay close attention to how the coils are wired. This is called a series circuit.
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Top Secret, I can tell you but then my wife will kill me.
Posted By: bigwest4085
Date Posted: March 30, 2006 at 7:23 PM
Ok thank you...But can i put each voice coil to each channel?? like the first guy said? or would that be bad and would it blow out the subwoofer? or overheat the amp? thank you...
Posted By: forbidden
Date Posted: March 30, 2006 at 7:29 PM
Yes you can. No it will not blow out the subwoofer (unless you abuse it). No it will not overheat the amp (unless you have the gain set incorrect).
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Top Secret, I can tell you but then my wife will kill me.
Posted By: bigwest4085
Date Posted: March 30, 2006 at 7:31 PM
And if i do hook it up the way you say how should i but it in the amp just in one channel or like a + in one set and a - in the other?????
Posted By: bigwest4085
Date Posted: March 30, 2006 at 7:33 PM
Well Ok which one do you recommend? The one you told me? if i do it like that can i turn it all the way up, and rattle my car? i just wanna hook it up right and not blow anything...so if i do it ur way i will be connecting one + and one - to the amp how should i connect it to the amp in one set of channels or a + in one set and a - in the 2nd channel set???
Posted By: Velocity Motors
Date Posted: March 30, 2006 at 9:54 PM
Try each scenario and listen to which one you like best. They will both work and we would not be giving you these options if we didn't think it would be safe to do. Why would you think that we give you a wiring hook up if it were going to damge your equipment ?
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: bigwest4085
Date Posted: March 31, 2006 at 8:29 AM
Ok thank you....I think im going to do it the way you said..And that way if i want to hook up another subwoofer i can...thank you very much for all this..i will let you know how it sounds..
Kevin
Posted By: Velocity Motors
Date Posted: March 31, 2006 at 8:52 AM
Post your results and try both scnearios to hear if there's an audible difference and choose the one that you like best.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: bmwpwner
Date Posted: April 03, 2006 at 11:20 PM
the reason it seems wrong to hook a + and a - wire together is because you are still thinking DC and not AC. think about wiring your woofer just like a chain of christmas lights are wired (series) a single wire runs in one side of the light bulb and out of the other side to the next light bulb. voice coils are the same when wiring in series. the diagram is dead on and i agree it is like asking if Shakespeare can write, these guys know their shizzle. great post on wiring woofers up correctly.
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"I cannot teach anybody anything, I can only make them think."
-Socrates-
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