2 15" Rockford Fosgate Subs

[WagonMafia]

Ok I just got my hands on to 15" Rockford Fosgates and I have no clue what would be able to power them so i was hoping you guys would be able to help me out here. Thanks.

[vibe007]

what is the model?

[WagonMafia]

There P1's

[vibe007]

ouch if you want to have all the power needed for those sub, it will cost alot so could you give me how much you're willing to pay.

[WagonMafia]

Somewhere around 800 bucks but for more than that i might as well just sell these and get new ones. Also do you think putting these in a vibe would be a smart idea. Now thinking about it might be to much for the vibe.What do you think

[vibe007]

Oh if you ask me then yes I think that two 15 inch sub is to much for the vibe, because of the place it'll take. The vibe would become kind of useless. Now if you sell those 2 subs, that mean that you have like 1000$ to send on a sound system, so I would buy a good quality 10 or 12 inch sub and a good quality amp that can drive the sub well, and this way i'm sure you'll be satisfied and it wont take all your trunk space.And if you decide to sell does subs, maybe I could consider buying one for a project.

[Sublimewind]

Quote, originally posted by WagonMafia »There P1'sThey are an SVC sub, so wired in parallel you'll get a 2ohm loadP1's are the "low end" line of RF subs, which also means they don't require HUGE amounts of power.... If this is any indicatorhttp: http://www.rockfordfosgate.com...tatus= , it just so happens I got an amp for ya in the sale section... I have 5 amps in the sale section ( http://forums.genvibe.com/zerothread?id=30937 ) and from the specs I see the Directed 600d would be a perfect match... if you want more the 1100d would work wonderfully as well... Being both Class D amps they are rather efficient and won't tax your charging system all that bad. I used both of them in my Subie and it was a non-issue, even with the weak charging system in the subie.. Yes, the box for them will take up most all of the trunk, and YES, they will be sickening loud, but if you like that sort of thing, who are we to judge?? Do you have any other plans for a system in the Vibe? I can't help on MANY different fronts, just let me know, I've been doing this for a LONG time.. I'm not a working installer, I've passed that part of my life, but did for a few years and have always had/have a system in my cars (look at my sound deadener thread i got going right now) With the money you outlined and with the possibility of using my amps (which i'm not pushing on, they would just be a good match, at a VERY nice price point) you could EASILY complete a whole system... Including a new head unit and most all of the wireing, and possibly even components for the front...!!!!!!Let me know if you are interested in anything in my sale post to... Directed is a good product, and DEI, their parent company owns MOST of the car audio/alarm world now...

[Sublimewind]

Quote, originally posted by vibe007 »ouch if you want to have all the power needed for those sub, it will cost alot so could you give me how much you're willing to pay.Very not true, see my post above.... not dissin either...

[vibe007]

sorry sublimewind but a good amp like the 1100d to power these subs is like 700$ new. That is alot of money for me(I'm really not rich:( ), but I didn't thought of going into use amp , and for the price of 300$ for an amp that comes from a guy that knows how to wire it (not damaged), I think that this is a really good deal. And sublimewind did you ever saw the forum diyaudio.com, it's crazy!

[Sublimewind]

Quote, originally posted by vibe007 »sorry sublimewind but a good amp like the 1100d to power these subs is like 700$ new. That is alot of money for me(I'm really not rich:( ), but I didn't thought of going into use amp , and for the price of 300$ for an amp that comes from a guy that knows how to wire it (not damaged), I think that this is a really good deal. And sublimewind did you ever saw the forum diyaudio.com, it's crazy!No need to be sorry, you are correct, they are quite expensive, but not when you buy USED...lol.... !!I've not been to DIYA.com, because i'm more of a mobile audio guy, but i'm a member of DIYMA.com (DIY Mobile Audio) and learning ALLLL the time..!!

[DA1ANDONLY]

whoa bro no 15's for the vibe its alot of weight with the box.. stick with 10 or 12 inch subs thats the way to go...my car has all rockford and it bumps

[Sublimewind]

Quote, originally posted by DA1ANDONLY »whoa bro no 15's for the vibe its alot of weight with the box.. stick with 10 or 12 inch subs thats the way to go...my car has all rockford and it bumps P1 aren't that heavy(~16lbs each), they are stamped steel baskets, not like the T3 cast frames.. the box will be big, but overall, it prolly won't be over 75lbs total..

[vibe007]

hum I just download the specsheet of the subs and there is model 15 inch model, one of 8ohm and the other 4ohm. It doesn't really mather except that you'll have a little less power if you have the 8ohm, because if you put them in parallel you'll need an amp that can drive 400watt rms at 4ohm and if you have two 4 ohm subs in parallel, you'll need an amp that can drive 400watt rms at 2ohm. So in the first case, you would need the directed 1100d amp of sublimewind and in the second case, you would need the directed 600d amp of sublimewind Secondly, if you put two 15 inch sub, the ideal volume of the box should be 12.16 cubic feet Sublimewind correct me if I'm away from the track!and there's the specs:http://www.rockfordfosgate.com...13882

[Sublimewind]

Quote, originally posted by vibe007 »hum I just download the specsheet of the subs and there is model 15 inch model, one of 8ohm and the other 4ohm. It doesn't really mather except that you'll have a little less power if you have the 8ohm, because if you put them in parallel you'll need an amp that can drive 400watt rms at 4ohm and if you have two 4 ohm subs in parallel, you'll need an amp that can drive 400watt rms at 2ohm. So in the first case, you would need the directed 1100d amp of sublimewind and in the second case, you would need the directed 600d amp of sublimewind Secondly, if you put two 15 inch sub, the ideal volume of the box should be 12.16 cubic feet Sublimewind correct me if I'm away from the track!and there's the specs:http://www.rockfordfosgate.com...13882You are close, but not quite... I believe you were looking at the "Vas" of the woofer, which Is part of the Thiel Small parameters and a big factor in "blueprinting" a driver, blueprinting woulf be taking all of the Thiel Small parameters and doing ALL of the math involved in comming to a FINAL volume for a enclosure... All to often, it's very difficult to get that "exact" in elcosure building... If you follow this link to the specs on the woofer (and we REALLY don't know exactly WHAT RF P1 he has) http://www.rockfordfosgate.com...tatusIt shows that each woofer, using the "recomended" box size would only need 1.58 cu. ft. (44.74 liters) BUT and this is a big one, they also give a RANGE in terms of box volume of Range: 1.30 cu. ft. - 3.50 cu. ft. (36.81 liters - 99.10 liters)On the low end of that "range" you would have a VERY tight sounding sub, with lots of control, but, little in terms of low end extension. While on the high end of that range you would have a sub that would go very low, but, but would sound VERY muddy and have little control.... The BOX makes the SUB, in MANY cases, what I described above would also be condiered the Q factor of the driver, Q being it's ability or inability to have control...I say the box is so important, because it is WHAT controls the sub overall.... A sub or really almost any piston driver is nothing without an elcosure. Even the mid in the door of your car act as as an "infinit baffle" application. Because of this, and in it's application, as a woofer moves outward, it creats a vacuum inside the box to physicly pull the woofer cone back into the box, and as the cone travles inward a pressure is formed to push the cone back out and this is another reasion WHY a sealed box NEEDs to be sealed, if it leaks, you lose this effect... Ported boxes do the same thing but in a different manner, one that I don't care to write a book about right now...lolI hope this makes sence to you, I know we are woring with somewhat of a language barrier vibe007..