Gday guys had a quick search on this but couldnt find anything so thought id post a tread on it,

now i got a 2 channel 760watt Pioneer amp and a Pioneer sub of some sort (unsure of details)

I went shopping today and looking at up grading to a Dual Sub in one box, now couple questions:
1. Can i run the sub's off my existing amp or do i HAVE to upgrade to a monoblock?
2. What sort of sub's should i look at, eg brand and wattage and what not


thanks for the help guys

If its the pioneer amp I'm thinking of its a GM-5300T which is 380w RMS bridged @ 4ohm, so as long as you can run the 2 subs at 4ohm you'll be fine. Usually you'd run twin subs at 2ohm though, as most setups I know of with twin subs are usually 2 single 4ohm subs running parallel to a 2ohm load, which your amp isn't stable to run when bridged.

What I guess you need is two DVC 4ohm subs so you can run the voice coils on each sub parallel to a 2ohm load, then runs the 2 subs in series back to a 4ohm load. I think that makes sense. That said 380w rms isn't going to be brilliant driving 2 subs so you'll probably find yourself better off getting a mono and using the 2 channel for your front stage.

Edit: The other option is run one sub to one channel and another sub to the 2nd channel, but then your running the subs stereo and they're only getting 125w rms each which is a bit crummy really.

If its the pioneer amp I'm thinking of its a GM-5300T which is 380w RMS bridged @ 4ohm, so as long as you can run the 2 subs at 4ohm you'll be fine. Usually you'd run twin subs at 2ohm though, as most setups I know of with twin subs are usually 2 single 4ohm subs running parallel to a 2ohm load, which your amp isn't stable to run when bridged.

What I guess you need is two DVC 4ohm subs so you can run the voice coils on each sub parallel to a 2ohm load, then runs the 2 subs in series back to a 4ohm load. I think that makes sense. That said 380w rms isn't going to be brilliant driving 2 subs so you'll probably find yourself better off getting a mono and using the 2 channel for your front stage.

Edit: The other option is run one sub to one channel and another sub to the 2nd channel, but then your running the subs stereo and they're only getting 125w rms each which is a bit crummy really.




hmmm thats pretty much another language to me hahaha i think may be better to get a package haha
the sub and amp are couple years old so should probs update anyways

any idea on price of dual sub and new amp brand new? and what brand u recommend?

2x IDMAX and an Audison VRx 500.1 should do the job :D

On a serious note, how much is your budget?

hey man i just got this setup,

pioneer d8400 mono block amp, 600w x 1 and 2 ohm
pioneer 3072d2 dual box, comes with 2x400w subs in its own special pioneer box

sounds really good man. u should look at it. try www.ryda.com.au, also JB hifi seem to be the only shop that will be price beat online stores, i got these 2 items plus a proper sony wiring kit for $785 down from around $1100. check these out dude, u wont be disapointed

Okay well atm my budgets pretty small as i just upgraded exhaust and mobile $$$ haha

Ive recently been offerd a dual sub from Rory Newton they are these pioneer ones :http://i289.photobucket.com/albums/ll240/Imperial0n3/11-05-07_1322.jpg

now atm i have one sub running of this amp

http://images.google.com.au/imgres?imgurl=http://capseyelectronics.com/images/76-large.jpg&imgrefurl=http://capseyelectronics.com/index.php%3FmoduleID%3D1%26firstpage%3D1%26TheItem _ID%3D76&usg=__C8KB1sNTMGxKZkF-OvRtTfh3dSU=&h=400&w=400&sz=61&hl=en&start=6&tbnid=4i6Xc9cdnpk92M:&tbnh=124&tbnw=124&prev=/images%3Fq%3Dpioneer%2Bamp%2B760%2Bwatt%26gbv%3D2% 26hl%3Den%26sa%3DG

hmmm am i going to be able to run those two subs of this one amp?
Also whats the advantages of having a Monoblock? do i need one?

May I suggest if you buy any Pioneer subs in genuine boxes you open the box up and redo all the connections, I blew a $1600 amplifier not long ago because of their poor excuse for wiring.

Well theses one are second hand so they should be right aye because theve been used before?

Well theses one are second hand so they should be right aye because theve been used before?
Thats what I thought with mine, wasn't the case lol

Its not hard to redo, just resolder their connections, the wiring itself is ok.

Thats what I thought with mine, wasn't the case lol

Its not hard to redo, just resolder their connections, the wiring itself is ok.

ahha righto then my 760 watt amp shoudl be able to power them to i can afford to upgrade yea?

ahha righto then my 760 watt amp shoudl be able to power them to i can afford to upgrade yea?

it'll work yeah but would really be under powered
i would wait until you buy a decent enough amp to run the two

it'll work yeah but would really be under powered
i would wait until you buy a decent enough amp to run the two
I would actually say it won't. That amp is 2ohm Stable in stereo, so the lowest it'll play at bridged is 4ohm, now those subs will much more than likely be SVC subs @ 4ohm, so they can be wired to either a 2ohm or 8ohm load. If they're wired to 2ohm (which is the most likely option) the amp will cut out as it can't handle a 2ohm load bridged. If they're wired in series to 8ohm, it'll work, but it'll be completely gutless, maybe 200w rms @ 8ohm.

I would actually say it won't. That amp is 2ohm Stable in stereo, so the lowest it'll play at bridged is 4ohm, now those subs will much more than likely be SVC subs @ 4ohm, so they can be wired to either a 2ohm or 8ohm load. If they're wired to 2ohm (which is the most likely option) the amp will cut out as it can't handle a 2ohm load bridged. If they're wired in series to 8ohm, it'll work, but it'll be completely gutless, maybe 200w rms @ 8ohm.

Well it depends how you wire them. As its a 2 channel amp it gives out 2xpower at 4ohms. If you hook this up to the subs (pos to pos, neg to neg, Like you would if you had 1 sub) they will get that power at 4 ohms each.

Well it depends how you wire them. As its a 2 channel amp it gives out 2xpower at 4ohms. If you hook this up to the subs (pos to pos, neg to neg, Like you would if you had 1 sub) they will get that power at 4 ohms each.
But you'll be then running the subs in stereo. They'll end up sounding out of sync and horrible. That and like I said before if you do that you'll be giving them all of 125w each, which is gutless.

But you'll be then running the subs in stereo. They'll end up sounding out of sync and horrible. That and like I said before if you do that you'll be giving them all of 125w each, which is gutless.

Yeah your right- It is gutless, but the op just wants to know if he could run them until he got a new amp...

okay so i may be not the best option any of you guys and an idea of a good amp which is resembly priced? haha

But you'll be then running the subs in stereo. They'll end up sounding out of sync and horrible. That and like I said before if you do that you'll be giving them all of 125w each, which is gutless.

Wouldn't make a difference.... think about what signal the amp will receive from the RCA's. It is certainly not a stereo full range signal.

Out of Sync has to do with phase.

okay so i may be not the best option any of you guys and an idea of a good amp which is resembly priced? haha

You can get 600WRMS @ 2ohm for around $260-$300. Do it right the first time.

Wouldn't make a difference.... think about what signal the amp will receive from the RCA's. It is certainly not a stereo full range signal.

Out of Sync has to do with phase.

Bingo.

Wouldn't make a difference.... think about what signal the amp will receive from the RCA's. It is certainly not a stereo full range signal.
That depends on the headunit as well. Some decks support stereo sub pre-outs and can output a stereo low frequency channel.

GM-D8400M will give you 600w rms @ 2ohm for $350 or so its a brilliant buy for the subs you have.

That depends on the headunit as well. Some decks support stereo sub pre-outs and can output a stereo low frequency channel.

GM-D8400M will give you 600w rms @ 2ohm for $350 or so its a brilliant buy for the subs you have.


ahh righto so were could i pick one of them up? strathfield or something?

ahh righto so were could i pick one of them up? strathfield or something?

JB Hifi or Audiocom would probably be your best bet. But you might find it at strathfield..

JB Hifi or Audiocom would probably be your best bet. But you might find it at strathfield..

i hope they have it at straithfeild coz i can get stuff cheaper

i hope they have it at straithfeild coz i can get stuff cheaper

Strathfield should. Theres 2 models, the cheaper one is 400w rms @ 2ohm, thats about $200 but it's a tad underpowered for 2 12"s, so I'd go the 8400 if you can, the cheaper one is a 7400 i think.

Strathfield should. Theres 2 models, the cheaper one is 400w rms @ 2ohm, thats about $200 but it's a tad underpowered for 2 12"s, so I'd go the 8400 if you can, the cheaper one is a 7400 i think.


ohh okay might drop in after school 2mora then and have a looksie thanks for all your help guys muchly appreciated

well im in a similar situation i might get subs from my mate 2x 1000watt JBL and was also looking at the D8400M pioneer amp... from what iv read it seem that 600w @ 2ohms should be aight for the subs i mean i don't want my car shaking from bass but i want to have a nice deep bass sound

well im in a similar situation i might get subs from my mate 2x 1000watt JBL and was also looking at the D8400M pioneer amp... from what iv read it seem that 600w @ 2ohms should be aight for the subs i mean i don't want my car shaking from bass but i want to have a nice deep bass sound

yeah thats pretty much what im after atm i have one sub and its not tuned right so it sounds like absoulute CRAP! haha

well im in a similar situation i might get subs from my mate 2x 1000watt JBL and was also looking at the D8400M pioneer amp... from what iv read it seem that 600w @ 2ohms should be aight for the subs i mean i don't want my car shaking from bass but i want to have a nice deep bass sound

What's the rms of the subs? The max power doesn't really mean anything..you have to match the rms of the subs to the amp..

yeah dont know i just had a quike look at them last time was there ill post it up when i get em ill chek if i can find out now be right back hehe

OK the subs are 250rms each would that be ok with the pioneer amp?

yeah dont know i just had a quike look at them last time was there ill post it up when i get em ill chek if i can find out now be right back hehe

OK the subs are 250rms each would that be ok with the pioneer amp?

rory what is the details of the subs im getting off you?

rory what is the details of the subs im getting off you?

2x12" of these http://www.pioneer.co.uk/uk/products/archive/TS-W306C/index.html

1000w, 400wrms each

2x12" of these http://www.pioneer.co.uk/uk/products/archive/TS-W306C/index.html

1000w, 400wrms each

so woudl that pioneer 8400 amp power them well, i know shyt all about ohms and all that stuffs

running parallel you only need 400w rms for the both.

running parallel you only need 400w rms for the both.

whats running parrallel?

whats running parrallel?

Running positive to positive and negative to negative on the 2 subs to have a single positive and negative for the amp. That makes a 2ohm load with two 4ohm subs. You only need 400w rms to drive them both in this setup if you want to follow the sub spec's, but I'd always go an amp with a bit more power for tuning and efficiency.

Edit:

This is simpler:
http://webpages.charter.net/drspike694/pix/Sub_wiring_serial_parallel_2x4ohm.jpg

ahhh righto but wouldnt Dual subs have one (+) and (-) not two?

ahhh righto but wouldnt Dual subs have one (+) and (-) not two?

Nah they have a pair of '+ and -' on both sides of the box

ahhh righto but wouldnt Dual subs have one (+) and (-) not two?

They'll have one (+) and one (-) each. You need to connect the (+) and (-) of one sub to the (+) and (-) of the other, so your left with a single (+) and (-) to connect to the amp terminals. Doesn't matter where you connect them as long as they connect so the positive of the amp is connected to both (+) of the subs and same for negative.

Edit: When I say doesn't matter, that means they can be connected together (ie. soldered) so a single postive and negative run from the subs, or they can come out of the box seperately and both connect to the same terminal on the amp etc etc. As long as (+) AMP connects to (+) SUB 1 and (+) SUB 2, and (-) AMP connects to (-) SUB 1 and (-) SUB 2. In your case if theres only 1 (-) and 1 (+) coming out of the box its wired for parallel inside the box, so just connect your amp thats 2ohm stable and away you go. If you want to use your current 2 channel amp you'll have to rewire them for series, or run them separately.

They'll have one (+) and one (-) each. You need to connect the (+) and (-) of one sub to the (+) and (-) of the other, so your left with a single (+) and (-) to connect to the amp terminals. Doesn't matter where you connect them as long as they connect so the positive of the amp is connected to both (+) of the subs and same for negative.

so if i run 2 wires from (+) and (-) from the amp and one go to left sub and one to the right should be good then yea?

sorry im a complete noob about all this stuff haha


EDIT: oh right so these duals in box should have ONE input yea?

so if i run 2 wires from (+) and (-) from the amp and one go to left sub and one to the right should be good then yea?

sorry im a complete noob about all this stuff haha
Not from that current Pioneer 2 chanel you can't. You'll bust something trying to run subs at 2ohm from an amp that isn't 2ohm stable. But if you mean the 8400M mono, then yes, that will work.



EDIT: oh right so these duals in box should have ONE input yea?
More than likely it'll be like that, but you'll need the 2ohm stable mono bloc amp to run them how the box has them wired.

Not from that current Pioneer 2 chanel you can't. You'll bust something trying to run subs at 2ohm from an amp that isn't 2ohm stable. But if you mean the 8400M mono, then yes, that will work.



More than likely it'll be like that, but you'll need the 2ohm stable mono bloc amp to run them how the box has them wired.

ohhh okay starting to get it now so until i get a monoblock amp i cant use these subs

EDIT: Sorry, this is for if you get the mono..

no no. You have 2 wires coming out of your monoblock amp (Pos and neg). You wire these to one of the subs. You then wire the positive of that sub to the pos of the other sub. Then you do the same for the negative.
Just go here http://www.termpro.com/articles/spkrz.html
And check out 'figure 2' in "Speakers in Parallel" .

Or there are some pretty good wiring diagrams here: http://www.crutchfield.com/learn/learningcenter/car/subwoofers_wiring.html (You will want the 'Two Subwoofers,
Mono Amp ', "2 SVC 4-ohm sub" one i thinks)

no no. You have 2 wires coming out of your monoblock amp (Pos and neg). You wire these to one of the subs. You then wire the positive of that sub to the pos of the other sub. Then you do the same for the negative.
Just go here http://www.termpro.com/articles/spkrz.html
And check out 'figure 2' in "Speakers in Parallel" .
EDIT: Or there are some pretty good wiring diagrams here: http://www.crutchfield.com/learn/learningcenter/car/subwoofers_wiring.html
Thats what I just got through saying he can't do because his 2 channel amp isn't 2ohm stable bridged and if you wire them up parallel like you just said you'll have them running at a 2ohm load which will most likely blow the amp.

To make it simple, if you don't want to fiddle with the wires for a temp job until you get the mono bloc, don't use them until you get the mono. Just stick to your single sub for now. That's the easiest way to put it.

Thats what I just got through saying he can't do because his 2 channel amp isn't 2ohm stable bridged and if you wire them up parallel like you just said you'll have them running at a 2ohm load which will most likely blow the amp.

To make it simple, if you don't want to fiddle with the wires for a temp job until you get the mono bloc, don't use them until you get the mono. Just stick to your single sub for now. That's the easiest way to put it.

Oh yeah sorry, I thought he was asking how he would wire it up if he got the Mono amp, My bad.
I probably should have read better. Sorry.

Oh yeah sorry, I thought he was asking how he would wire it up if he got the Mono amp, My bad.
I probably should have read better. Sorry.
You did post the website I was looking for earlier though, cheers :P

Using those diagrams, if you want to use them right away you'll need to rewire them as below, though with the amp you have, they'll be rather quiet. I wouldn't bother.
http://akamaipix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/2SVC_4-ohm_2ch.jpg

Ideally the setup your going for is this once you get your mono amp.
http://akamaipix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/2SVC_4-ohm_mono.jpg

Just a QQ, didnt want to start a new thread.
im running dual subs and 2-Channel Amp, Im pretty sure that each sub is rated at 300WRMS at 2ohms. am i better off keeping it wired in series or would i get better sound from runing 1 sub per channel?
Subs: Kicker DC12
Amp : Kicker ZX300.2

Just a QQ, didnt want to start a new thread.
im running dual subs and 2-Channel Amp, Im pretty sure that each sub is rated at 300WRMS at 2ohms. am i better off keeping it wired in series or would i get better sound from runing 1 sub per channel?
Subs: Kicker DC12
Amp : Kicker ZX300.2

Does the 'D' in dc12 stand for dual? Coz im pretty sure the kicker c12's are only 150wrms each.
First off, you probably dont want it wires in series, This will just up the ohms and lower the power.
You will want the subs wired in parallel if you want the amp to give out its 300wrms at 2ohms. This way the subs will be getting the most power they can. Just make sure you dont blow them giving em 300wrms each....

You could wire each sub to its own channel, but then they would only be getting 150wrms as that is what the amp puts out at 4ohms...

Just a QQ, didnt want to start a new thread.
im running dual subs and 2-Channel Amp, Im pretty sure that each sub is rated at 300WRMS at 2ohms. am i better off keeping it wired in series or would i get better sound from runing 1 sub per channel?
Subs: Kicker DC12
Amp : Kicker ZX300.2
Your Kickers are the black cone yeah? They're 150w RMS each, with a 4ohm coil. Theres no listed of ratings at ohm levels for subs, theres the voice coil impendance, in your case 4ohm, and a power rating, in your case 150w rms. If your running yours in parallel they run in a 2ohm load from the amp. If in series they're running an 8ohm load, and if seperate to each channel they're 4ohm each. Your in the same position as the OP, you can't run them parallel off your amp bridged because the amp isn't 2ohm stable bridged, which is the ideal way to run the subs you have.

P.S I think DC12 simply means dual C12's, because theres 2 in the enclosure. Thats all.

The only way I could see you running 2 subs off an amp bridged at 4ohm is if the C12's you have are the 8ohm variety as appose to the mainstream 4ohm model.

Your Kickers are the black cone yeah? They're 150w RMS each, with a 4ohm coil. Theres no listed of ratings at ohm levels for subs, theres the voice coil impendance, in your case 4ohm, and a power rating, in your case 150w rms. If your running yours in parallel they run in a 2ohm load from the amp. If in series they're running an 8ohm load, and if seperate to each channel they're 4ohm each. Your in the same position as the OP, you can't run them parallel off your amp bridged because the amp isn't 2ohm stable bridged, which is the ideal way to run the subs you have.

P.S I think DC12 simply means dual C12's, because theres 2 in the enclosure. Thats all.

The only way I could see you running 2 subs off an amp bridged at 4ohm is if the C12's you have are the 8ohm variety as appose to the mainstream 4ohm model.

What makes you think the kicker amp isnt 2ohm stable? On here "http://www.crutchfield.ca/Kicker_ZX300_1_300_watts_RMS_x_1_at_2_ohms_p/206zx3001.htm" (Sorry my link button isnt working for some reason)
It says "150 watts RMS x 1 at 4 ohms (300 watts x 1 at 2 ohms)" So I think it should be fine with 2ohms!

What makes you think the kicker amp isnt 2ohm stable? On here "http://www.crutchfield.ca/Kicker_ZX300_1_300_watts_RMS_x_1_at_2_ohms_p/206zx3001.htm" (Sorry my link button isnt working for some reason)
It says "150 watts RMS x 1 at 4 ohms (300 watts x 1 at 2 ohms)" So I think it should be fine with 2ohms!
Because I know its not 1ohm stable in stereo, so it can't be 2ohm stable bridged because that would require each channel to run at 1ohm.

You've also linked to a 300.1 which is a mono, Scott has a 300.2 which is a 2 channel amp.

Because I know its not 1ohm stable in stereo, so it can't be 2ohm stable bridged because that would require each channel to run at 1ohm.

You've also linked to a 300.1 which is a mono, Scott has a 300.2 which is a 2 channel amp.

I cant fid info for the 300.2 anywhere?!? Not even on the kicker site. All I can find is zx350.2 or zx350.4....

Ah okay then ill drop into some place today and see if i can get an amp to power there bad boys

so sorry, its actually a ZX350.2