Q" about Amp power and Sub

[k2tsui]

My amp is rated at Power 4ohm Bridged: 450 x 1 .my Sub require 350RMS@4ohm. Does my amp give enough power to run??

plz help to answer this.

[amurray]

hey mate... with powering subs what u have to look at is the 2 max / peak powers... if ur sub is 350rms. its peak is probly around 700... if the amps peak is less then this u can pretty much have the gain on full and it will be sweet.. if it is more.. just have the gain down a bit... u will know if there is to much power because u will start smelling voice coil...

In your case if its 450w max.. it should be fine, just the sub will not perform to its maximum

[k2tsui]

I just find that it's all bit confusing for my amp power.
It's spec is Power 190@4ohm, 320@2ohm and 450@1.5ohm when bridged @4ohm.
Cos i worry that my amp is only providing only 190RMS to my sub.
anyone can explan the bridged power more to me??

thz!!

[amurray]

bridged is when u join 2 channels togeher into one... if your sub is a single 4 ohm then u can only run it at 4ohm... if it is dual 4Ohm u can run it at 4 or 2 ohm depends if u run in parrael or series.... what sub and amp man? ill be able to tell u strate away

[Fr3aKi3]

hey mate... with powering subs what u have to look at is the 2 max / peak powers... if ur sub is 350rms. its peak is probly around 700... if the amps peak is less then this u can pretty much have the gain on full and it will be sweet.. if it is more.. just have the gain down a bit... u will know if there is to much power because u will start smelling voice coil...

In your case if its 450w max.. it should be fine, just the sub will not perform to its maximum

I read this a couple times and it still doesn't seem right to me. I've always preferred to have the amp more powerful than the sub where possible, this way you'll know that you'll be providing enough 'clean' power to the sub rather than having an amp struggle to provide a distorted signal because it isn't powerful enough.

Regardlessly of whether the amp has more or less power the gain has to be set correctly and not just "pretty much on full" on makes less power than what the sub can handle. Sending a clipped signal to a sub is bad for both sub and amp.

I'd say look at RMS figures and not PEAK/MAX power figures. RMS is a much better power indicator as it shows how much power being produce or can be handled (in case of speakers and subs) continuously rather than the split second of PEAK ratings.

[amurray]

RMS is Deffinatly not a safe indicater of what can be handled... If u want " safty " then match the PEAKS.. try and get the RMS's to line up but peak is what is maximum can put out.. not always a Split second...

now with the gains being on full i was talking about.. ur not going to blow the sub... about the clipping you are rite

[k2tsui]

bridged is when u join 2 channels togeher into one... if your sub is a single 4 ohm then u can only run it at 4ohm... if it is dual 4Ohm u can run it at 4 or 2 ohm depends if u run in parrael or series.... what sub and amp man? ill be able to tell u strate away

My Amp is soundstream LW1.350 and the sub is soundstream 15" picasso sub. any idea will it match?

[aka_NSX]

if it is dual 4Ohm u can run it at 4 or 2 ohm depends if u run in parrael or series.... what sub and amp man? ill be able to tell u strate away

how can you run it @ 4ohms with 4ohms DVC sub :confused:

you only can run it either 8ohms or 2ohms

[arverson]

with the LW1.350, how can you bridge a monoblock??

what voice coils does the picasso have??

aka_nsx, maybe he meant if he had 2 4ohm dvc subs. i dont know

[k2tsui]

my sub's voice coil is dual 4ohm
The amp 's manual said it can be produced 450RMS @1.5ohm when bridged.
is it mean that the power is stable at 1ohm when it produced 450RMS
is that mean it's ok to run my sub with the amp?

[arverson]

you'd preferably like to run your sub @ 2 to get the most out of both so dont worry bout the rating @ 1ohm.

depending on your expectations, itll be fine to run that amp with your sub. it should be enough - just dont run it into clipping as mentioned.

[amurray]

haha my bad.. lol i typed 4 instead of 8 lol.. but yea 2 or 8

[k2tsui]

thz guys

[ekdez]

your amp...
power 4 Ohms (Watts) 190x1
power 2 Ohms (Watts) 320x1
power Bridged 1 Ohms (Watts) 450x1

your sub needs 350 rms..

(ASSUMING) that the above spec's on your amp from the website.. is in RMS readings.. then....

if u bridge your amp to run at 1ohm u will have ample amounts of power to run your sub.. but u will run the risk of ruining your amp if u run it at 1 ohm.. cos u screw the dampening factor the amp can give out..

but to be honest with you.. i would run it at 2 ohms... and turn the gain down a little bit.. cos running it at 1 ohm is stupid is stupid.. + u dont know if your amp is stable at 1 ohm.. and at 2 ohms u will still enjoy the sounds a sub can give to your music..

just turn your gain knobs all the way to the bottom ("0").. decide what frequency u are going to run your amp at.... 50hertz..? " try match it with the sub requirements" and then turn your music up to how loud you normally listen to it.. then get a screwdriver while listening to your music and twist the gain knobs till u get a decent sound out of your sub.. but not a farty one.. and then turn the gain like one click to the left.. "towards 0" and then u shouldn't have a problem.. but dont go crazy with the gain.. cos u will run the risk of ruining the sub or the amp if one of them is underpowered :)

[Vinnie]

no speaker/sub 'needs' to be fed their rms rating to operate, it just maxismises their performance if you feed them more power :)