Any benefit to firing a sub INTO the box?

[Sturge 10+ year member]

I currently have the following setup in my 97 Tahoe:

Alpine CDA-7998

Diamond Hex S600s in the front

M361 in the rear

Diamond D5 600.2 for the front and rear

Diamond TDX 12D4 (dual 4 ohm)

Diamond D5 1200.1 for the sub

Okey dokey...I had this professionally installed, and although I have complete faith in the guys who did it, I don't think they're used to working with Diamond Audio equipment.

I've always run 2 12" subs in my systems (previously Kicker CompVRs run at 2ohm off of a HiFonics Series VII Thor), and it always resulted in FAR more bass than I needed. I figured I'd lose some of the bass stepping down to just one sub, but honestly I think something is missing from my current system bass wise. So...I'm trying to figure out if there's something I can do to improve the output of my sub before I drop more $ and make it a dual sub system.

That being said (and quite long winded), is there any benefit to firing the sub INTO the box (ie mounting it backwards) rather than the standard mouting style facing outward? I know it would open up more space inside the box...but not sure what effect it would have on the sound.

Click to read more...

 

[Shugarra 10+ year member]

As far as I know firing the sub into the box acts the exact same as having it mounted normally. Well, beyond the fact that you have to switch the wire around.

If you're looking for a little more bass, and you currently have a sealed box you might consider going ported. You wont lose much sound quality if you tune low but it should be noticably louder.

 

[mtech2 10+ year member]

That is about the only benefit that this set-up would provide...more ft^3. If you did this with your current sub and box combo (assuming it is close to being the correct size) it would lower your freq response curve (low freq cutoff) but also lower total power handling of the sub (xmax limit). The confiquration you mentioned is mostly used for push-pull set-ups (two subs face to face with reversed polarity) where the space required (box volume) is cut in half but the power requirements for the same spl are doubled. Also to look cool!!

The first thing I would check is to make sure your subs are wired correctly....make sure your NOT running 8ohms. If you are run the DVC in parallel instead of series. Are your crossovers and gains set properly? You'd really have to be more specific for anyone to know what's going on.

 

[Sturge 10+ year member]

The first thing I would check is to make sure your subs are wired correctly....make sure your NOT running 8ohms. If you are run the DVC in parallel instead of series. Are your crossovers and gains set properly? You'd really have to be more specific for anyone to know what's going on.

Come to think of it...the D5 1200.1 is a one channel amp, but has two sets outputs (split internally for easy DVC wiring) and my sub box only has one speaker lead going into it. Hmm....I guess I get to tear out my back seat to see what in the hell they did with the wiring.

I wonder if those fools tried to bridge the 2 outputs...argh.

I'll take a closer look and post again if I can't figure it out.

Thanks for the reply.