Front Stage Amp

[DejaWiz 5,000+ posts]

All the amps you have listed there would do the job great, imo.

Although if they were all sitting in front of me and I could only choose one, I'd probably lean towards the US Amps. That's just my opinion, however.

 

[dvrmstrng 5,000+ posts]

usamps....thats what ill be running with my first ever set of components

 

[BoondockSaints 10+ year member]

Rule #1 in car audio.
Consider the power/size ratio of the Massive amp. The form factor on that amp is impressive. Form factor meaning how much power per square foot or square inch you get out of it.

There's no way any of the amps listed is too much power for your speakers. In fact, you could take any of them and bridge them to your speakers and the results will be clearer, more dynamic and LOUDER (which you want, right?) music. Power doesn't kill speakers, people do. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

That makes sense... but if the DIY speaker Im getting is 8 ohms and they say it should get about 70 watts... the 100.4 probablly wont be enough will it? But could I use this amp as my amp for my subs? Or possibly 800.1 if they have one?

The subs should get 700 watts together from what I gather... So possible 2 of these one for the FS one for sub stage. But I would prefer a class D for the sub so its more efficient... but eitherway is there enough wattage in the 400.4 for the 8 ohm speaker craving 70 watts

 

[FoxPro5 5,000+ posts]

That makes sense... but if the DIY speaker Im getting is 8 ohms and they say it should get about 70 watts... the 100.4 probablly wont be enough will it? But could I use this amp as my amp for my subs? Or possibly 800.1 if they have one?
The subs should get 700 watts together from what I gather... So possible 2 of these one for the FS one for sub stage. But I would prefer a class D for the sub so its more efficient... but eitherway is there enough wattage in the 400.4 for the 8 ohm speaker craving 70 watts

True, if you double the resistance you halve the power. But the efficiency of the driver typically makes up for it. Those mids have a 88.5 db (2.8v/1m) sensitivty so I really don't think you'll notice a huge difference. http://seas.no/Prestige%20Basser%20PDF/ER18RNX-H1456-08.pdf

The power your subs get depends on the final impedance you present the amp. If you need 700 total than you need to find an amp that reaches full power at that final load. Without knowing in the voice coil configuration on the subs, we can't recommend an amp for them.

Yes, there is ENOUGH wattage for those Seas mids. Keep in mind that when you double the power, you'll get +3dB increase in loudness.

If the final load from yoiur subs is 4 ohms, than a great sub amp to look at is the Rockford Fosgate 25 to Life Punch75. That will throw down around 700w at greater than 60% efficiency. I have one on my sub and the birth sheet reads 688 watts at 4 ohm bridged (14.4v) at 65% efficiency. Not bad for $160. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[BoondockSaints 10+ year member]

Sorry forgot bout that they are single 4 ohms so 2 ohms? I think I will pick up the 400.4 if its gonna work for that... the 50 watts into it rather then the 70 or 80... Fox Im gonna trust you because most posts I have seen from you you know what your talking about. Thank you.

If you can suggest an amp for my subs that would be amazing as well.

And if anyone can point me in the direction of what wires I need that would be great because I want to order those along with my amps either tonight or tomorrow.

 

[FoxPro5 5,000+ posts]

Sorry forgot bout that they are single 4 ohms so 2 ohms? I think I will pick up the 400.4 if its gonna work for that... the 50 watts into it rather then the 70 or 80... Fox Im gonna trust you because most posts I have seen from you you know what your talking about. Thank you.
If you can suggest an amp for my subs that would be amazing as well.

And if anyone can point me in the direction of what wires I need that would be great because I want to order those along with my amps either tonight or tomorrow.

Oh, I feel so honored! //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif

And since you're such a nice guy, I'll reveal one of my secret sources:

http://www.millionbuy.com/roct5001bd.html

^^^ for your subs.

Oh hell, maybe another one too:

http://www.millionbuy.com/roct4004.html

^^^For your fronts. Might as well get matching amps and get a full factory warranty to boot, eh?

Expect the following real world power out of those amps:

http://www.rockfordfosgate.com/products/amp_power_output.asp

http://electronics.search.ebay.com/_Cables-Wiring-Kits_W0QQcatrefZC12QQsacatZ32807QQsassZbagQ2dboy

^^^ Install accessories.

How'd I do? //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

 

[BoondockSaints 10+ year member]

Oh, I feel so honored! //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif
And since you're such a nice guy, I'll reveal one of my secret sources:

http://www.millionbuy.com/roct5001bd.html

^^^ for your subs.

Oh hell, maybe another one too:

http://www.millionbuy.com/roct4004.html

^^^For your fronts. Might as well get matching amps and get a full factory warranty to boot, eh?

Expect the following real world power out of those amps:

http://www.rockfordfosgate.com/products/amp_power_output.asp

http://electronics.search.ebay.com/_Cables-Wiring-Kits_W0QQcatrefZC12QQsacatZ32807QQsassZbagQ2dboy

^^^ Install accessories.

How'd I do? //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

Kinda confused on how the sub one works, my understanding was the amp needed 700 watts at 2 ohms... I get that these are supposed to under rated big time but I didnt see the 5001 on there to compare to...

 

[FoxPro5 5,000+ posts]

http://www.rockfordfosgate.com/forum/topic.asp?TOPIC_ID=28516&SearchTerms=5001bd

 

[FoxPro5 5,000+ posts]

http://www.rockfordfosgate.com/forum/topic.asp?TOPIC_ID=28516&SearchTerms=5001bd

 

[BoondockSaints 10+ year member]

Alright so you would say that those amps are my best bets and will do enough? The one for the front stage will provide me with plenty of power right? Maybe more then the cadence would?

In a sec Ill look to see if I can figure out the wiring ....

 

[FoxPro5 5,000+ posts]

Alright so you would say that those amps are my best bets and will do enough? The one for the front stage will provide me with plenty of power right? Maybe more then the cadence would?
In a sec I'll look to see if I can figure out the wiring ....

If you want matching amps and to deal with the same company, yes. MB offers free shipping over $200....but you'd have to check the total weight as it must be below 30# IIRC.

Enough power? Yes.

No, the Cadence will put out more power. The Rockford does around 90 x 4. In terms of power/$$$ the Cadence wins. However, think of the space it takes up! That amp is freakin' huge. If you can fit it and power is your only concern, then buy it. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif In fact, buy a pair of them and get 150 x 4 + 600 x 2 = 1800 watts for $358 delivered. That a shitload of cheap power at

I'm not here to tell you what to do, only share possibilities. You need to set your budget and lay out exactly what you want. Then, the decision is pretty easy.

 

[BoondockSaints 10+ year member]

90x4 @ 4 ohms or at 8 ohms?

My budget is gonna be 350-400 for the sub and front stage amp.

I have 3 spaces to put amps unless I can figure out a way to get it behind my seat, which I dont think I can... but 2 spaces that are 23x11 (under front seats_ and one thats 10 by 30 (under rear seat)... It would be convient if I could get both amps in the 10 by 30... or at least the sub amp because the space where the amp goes is right in between the 2 subs.

 

[BoondockSaints 10+ year member]

The middle compartment is the space under the seat im talking about.

 

[BoondockSaints 10+ year member]

Bump.

And as far as the DIY components I think Im gonna go Peerless HDS for tweets and Seas ER18RNX for my mids. Those are both 8 ohm speakers... but is 50 watts enough for the ER18s? They reccomend 80...

 

[BoondockSaints 10+ year member]

Can anyone suggest a better choice for an amp for the above comps? Or is 50 watts gonna be enough for the mids to get what they deserve?