One sub moving slower
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=76521
Printed Date: May 13, 2024 at 6:28 PM
Topic: One sub moving slower
Posted By: smokinsmitty
Subject: One sub moving slower
Date Posted: April 20, 2006 at 2:25 PM
Ok well i got 2 12" Fusion PowerPlants and a Audiobahn A8002T amplifier with a 4gauge amp kit! Subs are in a 2.2cuft (per sub) ported to 37hz box. Well i was looking today and when the bass starts to fade away on a song and the subs start to relax again, the sub on the right takes longer to get back to the relaxed position and it seems to go back in further then come out as far as the other sub? why is this! could this blow the subs? let me know soon
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1 15" Memphis Mojo,
Memphis 16-mc1000D amp,
Audiopipe 4gauge mp kit, Pioneer DEH4700MP head unit.
2002 Yamaha 660R Raptor
Yamaha FZR600 crotch rocket
Sea Doo XP800
Sea Doo Spi
Replies:
Posted By: rottenbelly
Date Posted: April 20, 2006 at 3:38 PM
Are they running in mono or stereo? ------------- rottenbellys 05 crew cab colorado.Pioneer dehp 880prs, kenwood excelon in all 4 doors. Bazooka 500 mono Jl 10w3 in coustom center console box.
Posted By: smokinsmitty
Date Posted: April 20, 2006 at 3:42 PM
what does this mean?
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1 15" Memphis Mojo,
Memphis 16-mc1000D amp,
Audiopipe 4gauge mp kit, Pioneer DEH4700MP head unit.
2002 Yamaha 660R Raptor
Yamaha FZR600 crotch rocket
Sea Doo XP800
Sea Doo Spi
Posted By: smokinsmitty
Date Posted: April 20, 2006 at 3:49 PM
OK i uderstand now! They are in stereo! I am using both channels of the amp!
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1 15" Memphis Mojo,
Memphis 16-mc1000D amp,
Audiopipe 4gauge mp kit, Pioneer DEH4700MP head unit.
2002 Yamaha 660R Raptor
Yamaha FZR600 crotch rocket
Sea Doo XP800
Sea Doo Spi
Posted By: DYohn
Date Posted: April 20, 2006 at 4:15 PM
It could mean the subs are already blown (one of them anyway.) But when you say you are "using both channels of the amp" that does not tell us if they are in mono or in stereo. How are they wired? How is the signal getting to the amp and is it mono (one channel) or stereo (left and right)? ------------- Support the12volt.com
Posted By: smokinsmitty
Date Posted: April 20, 2006 at 5:06 PM
well it has 2 rca's left and right! so i guess that means stereo! they are wired into a 2ohm load! they are wired in parrallel!
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1 15" Memphis Mojo,
Memphis 16-mc1000D amp,
Audiopipe 4gauge mp kit, Pioneer DEH4700MP head unit.
2002 Yamaha 660R Raptor
Yamaha FZR600 crotch rocket
Sea Doo XP800
Sea Doo Spi
Posted By: DYohn
Date Posted: April 20, 2006 at 6:11 PM
My guess is one of your subs or your amp is blown. If you have the speakers in parallel (2-ohms) you have overloaded the amp as it is only stable into a 4-ohm load when bridged. UNLESS you are saying that your speakers are DVC and each is wired for 2-ohms, and they are connected to the amplifier in stereo. In this case, the amp can handle the load but I'll still say either the speaker or the amplifier channel that is "moving slow" is blown. I bet you don't have your gain set properly either. ------------- Support the12volt.com
Posted By: haemphyst
Date Posted: April 20, 2006 at 6:24 PM
In order for the woofers to move independently, meaning completely DIFFERENT motion patterns, not just throw, the amp needs to be wired in stereo, with one woofer on each channel of the amplifier. If this is the case, it seems to me that one channel of the amp is "defective". Huh? Wha...? Audiobahn - defective? NO, SURELY not!
Reverse the wires on the woofers (and by that I mean change the channels they are connected to), and see if the issue follows the wire change. If so, then reverse the RCA's. If the issue follows this as well, then it is likely in a signal processor or source in the chain... (your headunit) If the problem NEVER moves (the SAME woofer always behaves the same way) then it is in the woofer... My guess though? Amp is defective...
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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: smokinsmitty
Date Posted: April 20, 2006 at 7:36 PM
my gain is just a little of half way! ------------- 1 15" Memphis Mojo,
Memphis 16-mc1000D amp,
Audiopipe 4gauge mp kit, Pioneer DEH4700MP head unit.
2002 Yamaha 660R Raptor
Yamaha FZR600 crotch rocket
Sea Doo XP800
Sea Doo Spi
Posted By: smokinsmitty
Date Posted: April 20, 2006 at 8:26 PM
smokinsmitty wrote:
my gain is just a little of half way!
i mean my gain is set just a little past half way! ------------- 1 15" Memphis Mojo,
Memphis 16-mc1000D amp,
Audiopipe 4gauge mp kit, Pioneer DEH4700MP head unit.
2002 Yamaha 660R Raptor
Yamaha FZR600 crotch rocket
Sea Doo XP800
Sea Doo Spi
Posted By: DYohn
Date Posted: April 20, 2006 at 8:35 PM
smokinsmitty wrote:
i mean my gain is set just a little past half way!
That means nothing. It should be set to match the output levels from your head unit (use the SEARCH function above for "gain" in the topic title for some good tutorials on how to set it.) Regardless, you should first follow the troubleshooting advice given by haemphyst above and isolate the problem. ------------- Support the12volt.com
Posted By: the Installater
Date Posted: April 21, 2006 at 5:18 AM
I ran into a problem like this one the other day. One sub was hitting harder than the other one. SO I thought of everything, when I switched the rca's around the other sub would hit harder than the other one. The subs were dual P'3s and was all wired in paralel. So I bridged the amp and ran it in series along with the subs, and that fixed everything.
Posted By: smokinsmitty
Date Posted: April 21, 2006 at 4:42 PM
well guys did the test and it is the left channel on my amp! getting a brand new one for free next week!
-------------
1 15" Memphis Mojo,
Memphis 16-mc1000D amp,
Audiopipe 4gauge mp kit, Pioneer DEH4700MP head unit.
2002 Yamaha 660R Raptor
Yamaha FZR600 crotch rocket
Sea Doo XP800
Sea Doo Spi
Posted By: haemphyst
Date Posted: April 21, 2006 at 4:51 PM
the Installater wrote:
I ran into a problem like this one the other day. One sub was hitting harder than the other one. SO I thought of everything, when I switched the rca's around the other sub would hit harder than the other one. The subs were dual P'3s and was all wired in paralel. So I bridged the amp and ran it in series along with the subs, and that fixed everything.
Actually, what you have done is applied a band-aid. If an issue like described occurs, you should find out what the cause of the problem IS, by isolating the offending component, as described. SOME device is still not working correctly in your system, you have just "painted over the hole in the wall". Your problem still exists, you just don't see it anymore! ------------- 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: smokinsmitty
Date Posted: April 21, 2006 at 10:41 PM
i totally agree with u there haemphyst! do u know how to set the gain on that amp?
-------------
1 15" Memphis Mojo,
Memphis 16-mc1000D amp,
Audiopipe 4gauge mp kit, Pioneer DEH4700MP head unit.
2002 Yamaha 660R Raptor
Yamaha FZR600 crotch rocket
Sea Doo XP800
Sea Doo Spi
Posted By: smokinsmitty
Date Posted: April 25, 2006 at 8:05 PM
oK NOW WTF! I got a new amp! my First one was the Audiobahn A8002T, well warranty gave me the new Audiobahn A8002V well my one sub is still moving slower! i flipped the wires and it follows the left channel! whatever sub is hooked up to it when the sub starts to relax it pushes in and takes longer to move back! i put new speaker wire in praying this could be it! no luck! im so mad! so finally i called a buddy and we took out his amp and hooked mine up and it did it to his subs also! so that eliminates my HU and subs and box and wiring! well now tommrow a buddy is letting me test it with his Fusion 1402 amp in my car! do you think it is my Audiobahn amp again! i just got it today and as soon as i hooked it up it did it again! o and now i got the stupid ground loop noise! GRRR! haha!
-------------
1 15" Memphis Mojo,
Memphis 16-mc1000D amp,
Audiopipe 4gauge mp kit, Pioneer DEH4700MP head unit.
2002 Yamaha 660R Raptor
Yamaha FZR600 crotch rocket
Sea Doo XP800
Sea Doo Spi
Posted By: geepherder
Date Posted: April 25, 2006 at 8:20 PM
Well, it seems reasonable to assume there's a problem with your new amp.
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My ex once told me I have a perfect face for radio.
Posted By: dwarren
Date Posted: April 25, 2006 at 8:21 PM
Maybe it's just your eyes...I've heard of other people telling similar stories and all that it turns out to be is an optical illusion.
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Posted By: smokinsmitty
Date Posted: April 25, 2006 at 8:22 PM
well i have had other people look at it to! they see the same thing! but the subs do not do it until my HU is turned up past like 40. then it starts to do it! ------------- 1 15" Memphis Mojo,
Memphis 16-mc1000D amp,
Audiopipe 4gauge mp kit, Pioneer DEH4700MP head unit.
2002 Yamaha 660R Raptor
Yamaha FZR600 crotch rocket
Sea Doo XP800
Sea Doo Spi
Posted By: DYohn
Date Posted: April 25, 2006 at 8:35 PM
I bet your head unit is clipping at that volume level and what you're "seeing" is an artifact of that. How does it sound? And didn't we go through this with you before? Did you try all the suggestions in the earlier thread? ------------- Support the12volt.com
Posted By: stevdart
Date Posted: April 25, 2006 at 9:54 PM
I've got this thing about me and it drives me nuts. Maybe it's normal, I don't know. But when I see a ! at the end of a sentence, even though I'm silently reading, the last word in the sentence gets emphasized! When every sentence ends in ! I get jittery! Then I lose control! I go nuts! AARRRR!
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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: smokinsmitty
Date Posted: April 26, 2006 at 5:39 AM
yup we did have this problem but this is a new amp! well i switched the rca's like you guys told me to and that did not change what sub was doing it but if i change the speaker wire from the amp then it starts to do it. whichever sub is hooked up to the left channel does this! they sound great! they are hitting hard just whatever sub is hooked up to the left channel acts up! ok well how do i get my HU to stop clipping?
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1 15" Memphis Mojo,
Memphis 16-mc1000D amp,
Audiopipe 4gauge mp kit, Pioneer DEH4700MP head unit.
2002 Yamaha 660R Raptor
Yamaha FZR600 crotch rocket
Sea Doo XP800
Sea Doo Spi
Posted By: stevdart
Date Posted: April 26, 2006 at 8:05 AM
You will find that answer within this search for gain setting. ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
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