3 subs off 1 amp?

[Xibalba 0]

Is it ok to run 3 subs off 1 amp without any major worries. I was thinkin 3 15" BL's off 1 RF4000.1. What do you think?

Or maybe I should just shut up and run 3 SAE-1000D's.

Edited March 29, 2008 by Xibalba

[Acidburn 10]

3 subs on 1 amp is ok as long as the total impedance is in the amp's safe range

[johnecon2001 82]

Get the DVC 2 ohm versions and wire like this:

[Xibalba 0]

hmmm, i wonder if in the long run it will be safer to just run 3 amps total, 1 per sub. it will def be cheaper buyin 3 sundown 1k watt amps compared to one RF 4000.1 watt amp, even though that amp has 1k more watts.

[johnecon2001 82]

How would it be safer? That Rockford is rated at 1 ohm, and you're running above that in impedance. If you're careful with your gains, those subs will do fine off that power.

[Xibalba 0]

true. Thanks for the help.

[ronrico418 0]

Personally I am a Sundown fan but in your application the RF at 1.33ohms mono should work best!

[Xibalba 0]

Yeah. Now I get the fun part of designing a enclosure. not to sure how I wanna do the ports, lol. Is it okay to have a slot port betweem each sub. IE>>>> O || O || O >>>>something like that where obviously O is a sub and || is a port.

Edited April 6, 2008 by Xibalba

[ronrico418 0]

Yeah. Now I get the fun part of designing a enclosure. not to sure how I wanna do the ports, lol. Is it okay to have a slot port betweem each sub. IE>>>> O || O || O >>>>something like that where obviously O is a sub and || is a port.

IMO I would put subs as close together as possible so they may act as one. You can go all subs up and then one port back.....Just an idea

[Xibalba 0]

I can't do subs up unfort. My subs and port have to face the same direction because it is going in a blow through. I would love that idea if I had a camper shell or something on the truck, but I only have a fiberglass lid. Maybe I should just suck it up and put 2 15" BTLs back there instead of 3 15" BLs.

I was originally going to do 4 12" BLs but I fear between all the ports and the width I may not have enough room to fit them going across.

SIDE NOTE: almost forgot, if I do the 2 15" BTLs, I will be adding a second RF4000 to the equation withing a couple months.

Edited April 7, 2008 by Xibalba

[JimJ 11]

Why not put the woofers on top and the port going across the bottom, or vice versa?

[Xibalba 0]

Hmmm, how stupid of me....that actually didn't even cross my mind, and it is such an easy answer, lol. I will probably end up doing 4 12's now. Do you think it would make a difference if I put the port on the top as opposed to the bottom? Wouldn't the box show more "strength" if I put the port on top cause the weight will not all be resting on the open section of it...if that makes sense.

Edited April 7, 2008 by Xibalba

[NDMstang65 403]

I would put the port along the bottom of the enclosure if i were you. Definitely need to brace the port well so it does not flap/vibrate. There really is no strength advantage either way...you'll have to brace it the same on the top as you would the bottom.

Thanks!

-Nick