Enclosure for 2x Sundown Audio SA-12's

[LosIsATool 5,000+ posts]

Or get a longer ground and mount it on the seat.. Its not the best option but better then the box

 

[Ninesvnsicks 10+ year member]

Its deffinently not the best thing for any electronic. What about a peice of MDF on the side wall? And do you have that box bolted down, you want to when those sundowns get moving!

Right now I don't but eventually I'm going to try to. I could fit it on the side but I didn't want to screw into any of the stock plastic walls. I'd like to at least put it in front of the box towards the rear hatch if i could find a grounding point around there but there's just carpet mostly.

 

[jtomsic 5,000+ posts]

bet you theres metal under that carpet!

 

[Ninesvnsicks 10+ year member]

bet you theres metal under that carpet!

I was trying to stay away from screwing thru anything if i could that and a screw is less secure then a bolt. I'd love to find a better stock point to ground to. I hate mounting to seats because of the way they lean back and I really would like it to be behind the box hidden. Trying to think of what to do. Thinking of maybe under the rear seat if it will fit but idk how ventilation would be then.

 

[LosIsATool 5,000+ posts]

as long as you have a inch open air space around the amp it will be fine

 

[hispls 5,000+ posts]

I was trying to stay away from screwing thru anything if i could that and a screw is less secure then a bolt. I'd love to find a better stock point to ground to. I hate mounting to seats because of the way they lean back and I really would like it to be behind the box hidden. Trying to think of what to do.

Mounting to the back of the seat is good. There's a few spots with some good steel in them so get some self tappers and go for it. If you flip up the rear seat and un-bolt a seatbelt, clean the paint off, those bolts make for good ground spots.

Box looks good. Hope you have some bracing in there. I have had good luck with subs and ports back in my jeep. 35hz tuning sounds nice, but I find 40-42 gives a little more punch.

 

[Ninesvnsicks 10+ year member]

Mounting to the back of the seat is good. There's a few spots with some good steel in them so get some self tappers and go for it. If you flip up the rear seat and un-bolt a seatbelt, clean the paint off, those bolts make for good ground spots.
Box looks good. Hope you have some bracing in there. I have had good luck with subs and ports back in my jeep. 35hz tuning sounds nice, but I find 40-42 gives a little more punch.

I tried the seat belt bolts first but they were on so tight I couldn't loosen them right now its next to them on that metal piece seems to be working good. The onyl thing I am worried about on the rear of the seat is the fact that they tilt so the amp would be upside down a little and wouldn't it over heat because of that?

 

[LosIsATool 5,000+ posts]

I tried the seat belt bolts first but they were on so tight I couldn't loosen them right now its next to them on that metal piece seems to be working good. The onyl thing I am worried about on the rear of the seat is the fact that they tilt so the amp would be upside down a little and wouldn't it over heat because of that?

No it will not overheat being upside down.

 

[hispls 5,000+ posts]

I tried the seat belt bolts first but they were on so tight I couldn't loosen them right now its next to them on that metal piece seems to be working good. The onyl thing I am worried about on the rear of the seat is the fact that they tilt so the amp would be upside down a little and wouldn't it over heat because of that?

I have ran a few different amps in that location without issue. it's closer to vertical than upside-down anyway and you should have a few inches between the amp and the box if you mount it low on the seat.

Playing around with some new stuff myself, got a temp box in now that I'm throwing away this week (since the dump up here will let me unload anything), then will be rebuilding when I get back home. I'd like to put the smaller amp along the side wall too, but I agree it doesn't seem like there's really anything solid to mount it to and there's really no large flat surface to make it work.

Going to try to cram a pair of 18's and another Fusion 4K in mine somehow.

 

[Ninesvnsicks 10+ year member]

Ok I took it off the box and mounted it on on the passenger side rear seat the larger one seems to be pretty sturdy there.

 

[Ninesvnsicks 10+ year member]

I have ran a few different amps in that location without issue. it's closer to vertical than upside-down anyway and you should have a few inches between the amp and the box if you mount it low on the seat.
Playing around with some new stuff myself, got a temp box in now that I'm throwing away this week (since the dump up here will let me unload anything), then will be rebuilding when I get back home. I'd like to put the smaller amp along the side wall too, but I agree it doesn't seem like there's really anything solid to mount it to and there's really no large flat surface to make it work.

Going to try to cram a pair of 18's and another Fusion 4K in mine somehow.

Wow that amp looks like a beast, also I love the fire extinguisher lol. I went with around 35hz for sound quality but I gave the ports an extra .5 inches so its technically prolly around 34hz does hit some nice lows tho but I really need to play around with settings more. I was wondering under the carpet in the hatch is there places i can bolt the box down?

 

[LosIsATool 5,000+ posts]

Ok I took it off the box and mounted it on on the passenger side rear seat the larger one seems to be pretty sturdy there.

It should last longer. Its just a precaution!

 

[Ninesvnsicks 10+ year member]

It should last longer. Its just a precaution!

Yea I was thinking about it the whole time it's funny tho we really were told to mount the amps to the backs of boxes at circuit city lol. I was weighing over heating vs vibration. It doesn't tilt that much but I know your not suppose to mount an amp upside down because the heat will not rise to the heatsinks.

It's still right next to the box tho but at least its not screwed touching it.

 

[LosIsATool 5,000+ posts]

Yea I was thinking about it the whole time it's funny tho we really were told to mount the amps to the backs of boxes at circuit city lol. I was weighing over heating vs vibration. It doesn't tilt that much but I know your not suppose to mount an amp upside down because the heat will not rise to the heatsinks.

They might of told you guys that because its faster and does not require muth thought.

 

[hispls 5,000+ posts]

Yea I was thinking about it the whole time it's funny tho we really were told to mount the amps to the backs of boxes at circuit city lol. I was weighing over heating vs vibration. It doesn't tilt that much but I know your not suppose to mount an amp upside down because the heat will not rise to the heatsinks.

True, upside down is bad. For most big-box store installs mounting an amp to a box is safe (assuming 300-500W low end subs). Getting into high power/high performance, a lot of amps fail from vibration damage, also makes it much easier for thieves to grab the whole thing and go real quick.

That amp is a monster, does easily rated 4K at real world voltage and impedence and they have been clamped at around 10KW on 18V. Broke one of my subs day 1 testing, which is cool since I want to build them up with some different coils and go up to 18".... I wasn't really going easy on them.

I actually haven't checked what's under the carpet in the back. I had considered using some liquid nails and mounting a piece of ply right to whatever it is that I could screw things down into, but I can't afford the space and whatever I put in should be snug enough to not move around much. If you investigate under the carpet LMK what you find. My big fear with drilling into that area of any car is going into the gas tank or something else dangerous or important.