80 over or 80 under??

mirra540ryder

k well just orderd my mm2154 svc subwoofer today 400 watts rms. and im debating on what amp to get considering when i get the money im getting another mm2154

first choice is a profile ap1000 putting out 480 watts rms X 1 at 4 ohm and will get another after i get the second sub

or

profile ap2000 pumping 320 watts X 2 at 4 ohm and will just get another sub later and add to the amp.

and if i get the ap1000 will i also need to get another amp kit to go with it as well or is there any way i could hook up two amps to my four gauge amp kit. amp kit says it handles 2500 watts


thxxx

sub is going in a 2.0 cubic foot speaker box if that matters any. the sub calls for a 1.5 but im dumb and built it to deep:(

F1nut

Try the "On The Move" section...below.

Dennis Gardner

The 160 watts will only make a couple of db difference, but I always try to buy the most I can afford the first time around to give me a sense of a nice stopping place and it helps to avoid losing $$$ in the upgrade path. Every piece you buy new and sell used costs $$$ that can be used later.

Buy the best you can afford, each time you purchase even if you have to wait awhile.

mirra540ryder

well i know that. to buy the best i can. but what would do better. go with the ap2000??

then when i upgrade i could get a second one and run the bridged at 960 watts rms and have 2 3000 watt max subs??

Dennis Gardner

It is your choice, I don't think you'll notice much difference.

For comparison, lets say you get 90dbs from 1 watt in your car. It takes twice the power to move the sound up each 3 decibels (db).

93 db = 2 watts
96 db = 4 watts
99 db = 8 watts
102 db = 16 watts
105 db = 32 watts
108 db = 64 watts
111 db = 128 watts
114 db = 256 watts
(Your 320 watt or 480 watt choices)
117 db = 512 watts

Somewhere between 114 & 117 dbs lands both of your amp choices, so I doubt that your ears can hear the difference in the 1.5 dbs between the amps.

The same is true of doubling of speakers. It only adds 3 db of spl.

The cars tight environment and box design have way more to do with how much spl you get than amp power, so choose the one you want, there really isn't a best choice. A great 100 watt amp matched with the right woofer and box placed properly will yield more spl than a high powered amp with a poorly designed box. Simply turning a box around in a trunk to face the rear, adds as much spl as 4 times the power.

Basically, what I am trying to say is that you won't go wrong with either choice, so choose what fits your car/budget best.

mirra540ryder

k thanks that helped me out alot. i learn new stuff every day on this. so you are saying an extra speaker wont really be that much lounder??

mirra540ryder

oh. and my sub box is .5 cube's to big supose to be 1.5 but is around 2

bad?? or will it really matter. some 15's need 2.0 and some say from 1.5-4.0 in a seald..