im a noob wen it comes to all this kind of suff. i was wondering wat is theworst case scenario if i run a sub which has a nominal power rating of 300 rms to an amp which produces produces the same amount of power. also are there any issues wif underpowering subs.


also what is the cheapest amp i can get to power a 500rms sub, (not some el cheapo brand amp)

im a noob wen it comes to all this kind of suff. i was wondering wat is theworst case scenario if i run a sub which has a nominal power rating of 300 rms to an amp which produces produces the same amount of power. also are there any issues wif underpowering subs.

Do you mean the amp produces 300w max? or rms?

If rms then i really cant see any problem... :confused:

the amp produces 300 rms

if your amp puts out 300watts rms then you wont have a problem
tho it is better to have slightly more power so you dont over work the sub by turning the gain down abit

one question

Precision Response Car Amp 2x150WRMS


The AA-0424 supercedes the popular AA-0434 2 x 150WRMS amplifier, but offers even more power output with a massive 500WRMS x 1 when bridged into a 4ohm load – making this ideal for powering two of the new Precision Response dual 4ohm subwoofers in series/parallel wiring. Variable bass EQ of up to 18dB is included, as is a remote level controller to mount on your dash or centre console, while the fully variable high and low pass filters make this amp equally useful for powering subwoofers or full range speaker systems. At $249 this is easily one of the best value 2-channel amplifiers on the market today.



Specifications:
Power / channel @ 4ohm 14.4V: 150WRMS x 2
Power / channel @ 2ohm 14.4V: 255WRMS x 2
Power / bridged @ 4ohm 14.4V: 500WRMS x 1
Signal/Noise ratio: >90dB
Input sensitivity: 200mV to 5V
Low pass filter: 50 - 500Hz @ 12dB/octave
High pass filter: 50 - 500Hz @ 12dB/octave
Bass boost: 0 -18dB @ 50Hz
Pass thru RCA: Yes
Remote level controller: Yes
Dimensions: 340(L) x 258(W) x 50mm(D)
QTY
1+ $249.95
2+ $225.00
5+ $199.95


im assuming that this amp will be capable of power a 500rms sub

i would say thats a good price for that amp
it can power a 500watt rms sub but only if the sub can be wired up as 4ohms

this is the sub that i will be getting

Car Speaker Type Component
Elements 1-Way
Car Speaker Function Subwoofer
Size 12"
Nominal Power Handling 500 Watt RMS
Powered Non-Powered
Technical Features
Peak Power Handling 1000 Watt
Frequency Response 20 Hz - 1.8 kHz
Sensitivity 89 dB
Impedance 4 ohm (Dual Coil)
Components
Woofer Material Poly / Plastic
Magnet Material Strontium Ferrite
Surround Material Rubber
Mounting
Enclosure Non-Enclosed
Top Mounting Depth 6.61 In.
Mounting Diameter / Length 11.58 In.
Miscellaneous
MPN xw1200
Product ID 22036772



will that jaycar amp be ble to power this

that amp wont work with that sub because the subs a 4ohm and theres no way that you can wire it up as a 4ohm
the only way is to have two of them
you best bet would to have a look at the monoblocks or find a 2ohm sub

bummer thanks for that. any recommendation on amps to run the sub, around price range of the jaycar. so wat is the exact type of amp i need to run this sub

you'll need to find an amp that does 500watts rms at 2ohms
and thats gonna be pricey
your better off seeing if that sub comes in 2ohm which it should or find one similar in 2ohm

im assuming that this amp will be capable of power a 500rms sub

Remember you'll never get the full 500w... because its quoted at the 14.4v benchmark; & theres no feasible way to run a full 14.4v to the amp in a street car environment.

Thats why its always best to get an overpower amp. ;)

jbl GTO1202D


Product Features

12" 1200W peak subwoofer
Dual Voice coil design (dual 2-ohm, pre-wired as a 4-ohm sub)
Power Handling, RMS: 300 Watts
Power Handling, Peak: 1200 Watts
Frequency Response (±3dB): 28Hz - 450Hz
Sensitivity: 93dB
Mounting Depth: 5-1/16"
Cut-Out Diameter: 11-3/16"



these are another sub i was looking at picking up.

what amp do you guys recommend me pick for this sub in the 250 mark. wat exactly does Power / bridged @ 4ohm 14.4V: 500WRMS x 1 mean

jbl are good subs worth there money
some members have got them
that sub will be good with that 2ch amp
as for your other question about 500watts at 4ohm bridge 14.4volts is normally when you car is running thats how many volts is running to the amp but you'll get voltage drop depending on where the amp is
there would be another power figure at 12 volts, this is when the car is off

jbl GTO1202D


Product Features

12" 1200W peak subwoofer
Dual Voice coil design (dual 2-ohm, pre-wired as a 4-ohm sub)
Power Handling, RMS: 300 Watts
Power Handling, Peak: 1200 Watts
Frequency Response (±3dB): 28Hz - 450Hz
Sensitivity: 93dB
Mounting Depth: 5-1/16"
Cut-Out Diameter: 11-3/16"



these are another sub i was looking at picking up.

what amp do you guys recommend me pick for this sub in the 250 mark. wat exactly does Power / bridged @ 4ohm 14.4V: 500WRMS x 1 mean

Thats what i have x 2
Great subs
Can be wired in 1, 2, or 4 ohm configuration.
Ive even convinced 2 mates to buy them with the factory boxes...And they love them too.

Great Sub IMO

']Thats what i have x 2
Great subs
Can be wired in 1, 2, or 4 ohm configuration.
Ive even convinced 2 mates to buy them with the factory boxes...And they love them too.

Great Sub IMO


what amp r u using to run the puppies

what amp r u using to run the puppies

Response Monoblock 1000WRMS
Running them at 2ohm atm at 350WRMS per sub

']Response Monoblock 1000WRMS
Running them at 2ohm atm at 350WRMS per sub


damso how much did the amps and subs set u back

dam so how much did the amps and subs set u back
Amp $290
Subs $125 Each.
Wiring...ALOT

']Amp $290
Subs $125 Each.
Wiring...ALOT


was that 290 brand new, cant seem see the amp on the jaycar website

Dont think they stock that model anymore... instead, grab the 4x100WRMS one. Thats what i'll be grabbing for my setup next week hopefully.

$299
Power / bridged @ 4ohm 14.4V: 380WRMS x 2

Perfect for the JBL's. :D

does the x2 mean i can run 2 subs at 350 rms. so how exactly do u tune subs neway. can i run two of those subs off this amp. would the 8 gauge wiring be suffiecient for this amp

does the x2 mean i can run 2 subs at 350 rms. so how exactly do u tune subs neway. can i run two of those subs off this amp. would the 8 gauge wiring be suffiecient for this amp
1) Yep
2) you adjust the settings on the amp to let the sub/s play below a certain frequency and so on
3) Yep
4) And yep, but would always go 4 gauge becuase it saves you upgrading later on down the track

you need to make sure that the settings for each channel are all the same
you dont want to do any damage to the subs
and yeah as TUFFTR said run 4ga incase you wanna add another amp for your speakers cause then all you need in a distrobusion block and some 8ga wire

just picked up my two pre loved puppies 2 12inch jbl gt01202d for 107 for the pair. the guy gave me a reciept just incase somefing wif dem goes wrong. comes 12 moth extended warranty at strathfield. i noe nuffin amount wiring the actual amp and setting all that kind of stuff out. ill prolly grab the amp on the weekend r soemfing and do the wiring tomorrow to the head unit and the battery. can any1 here help me with the wiring wen i get my amp.

$107 FOR THE PAIR!!
F**K YOU!
Nice buy!

']$107 FOR THE PAIR!!
F**K YOU!
Nice buy!
hahahah yeah bargain from ebay just trying to figure out how to wire an amp. i thought it was easy. u might be able to help me tuff, whats the 4 plugs in the sub for. i though it was simply a plus and a neg. but there are 2 + and 2 -

hahahah yeah bargain from ebay just trying to figure out how to wire an amp. i thought it was easy. u might be able to help me tuff, whats the 4 plugs in the sub for. i though it was simply a plus and a neg. but there are 2 + and 2 -

Yeah they are Dual voice coil
So if you wire both +'s to the + on the amp and both -'s to the - on the amp you will get one resistance
but if you link them + to - to + to - (Bold being what you connect to the amp)
you will get another resistance, again it depnds on your amp.
Im pretty sure with the response 4channel it can go down to 2ohm.
So doing it the last way will be better.

Can help you wire them in if need be

']Yeah they are Dual voice coil
So if you wire both +'s to the + on the amp and both -'s to the - on the amp you will get one resistance
but if you link them + to - to + to - (Bold being what you connect to the amp)
you will get another resistance, again it depnds on your amp.
Im pretty sure with the response 4channel it can go down to 2ohm.
So doing it the last way will be better.

Can help you wire them in if need be


thanks that would be awesome, ill wire everything up tomorrow and ill leave the amp last till i get it sometime this week maybe next week. ill let u noe cheers

just double check that the jaycar response amp 4 x 100rms

Specifications:
Power / channel @ 4ohm 14.4V: 130WRMS x 4
Power / channel @ 2ohm 14.4V: 190WRMS x 4
Power / bridged @ 4ohm 14.4V: 380WRMS x 2
Signal/Noise ratio: >90dB
Input sensitivity: 200mV to 5V
Low pass filter: 50 - 500Hz @ 12dB/octave
High pass filter: 50 - 500Hz @ 12dB/octave
Pass thru RCA: Yes
Dimensions: 400(L) x 258(W) x 50mm(D)

will be sufficient to power my 2x 12 inch jbl gt01202d. they ahve peak power of 1200watt and nominal power of 300 rms, also would like to wonder if anyone out there on the forum i using this amp to power 2 subs and are they having any porblems wats so ever and how does it sound.

Good amp.. only problem is its a big bastard. Looks like i wont be able to use it because of its dimensions.

bummer, where were u gonna mount it. im assuming, you wont want to buy the amp anymore. what amp are you thinking of using now