Old Sub new and imporved cabinet! *PIC*

[dougg]

Provided Link: More Photos


Been having the itch to build another speaker, but my speaker building budget is busted. (Baby on the way!) I took a look in the garage, I had 1 4x8 sheet 3/4” MDF, and a sheet of Formica left over from my new kitchen. Ok I’ll build a new cabinet for my sub.

12” Titanic MKII w/250w PE plate amp, I had it in a 2cf sealed ¾’ mdf. It sounded great, but I did get a lot of noise from the cabinet.

So I built a 2cf 1.5” thick cabinet. (two layers of ¾” mdf). This thing is heavy. Bass is *much* tighter and I don’t hear any noise from the cabinet. It doesn’t move around the floor like it use to. Plus I covered it with the nice granite like Formica so it look just as good as it sounds. I am very happy with this change. If you can afford the bigger cabinet with the thicker walls it is well worth it!!!

I wish everyone has a safe and Happy New Year!

Doug

[scp53]

Well done Doug! Nice pics.

So do you need to use the bass boost on that amp or is it just flat? scp53

[dougg]

> Well done Doug! Nice pics.

> So do you need to use the bass boost on that
> amp or is it just flat? scp53

Thanks!

No bass boost. At the levels I like to listen the 250w amp clips way too much when running
boost.

Room gain seems to fill in the low end enough.

Doug

[scp53]

Thats exactly why I took the boost off! PE really needs to get a bigger amp on the 10in titanic mk3 kit OR use the 240 wt plate amp. First day I got the sub I clipped it really easy. Modded it and that fixed it some but still can clip easy without pushing the driver much. scp53

[dougg]

> Thats exactly why I took the boost off! PE
> really needs to get a bigger amp on the 10in
> titanic mk3 kit OR use the 240 wt plate amp.
> First day I got the sub I clipped it really
> easy. Modded it and that fixed it some but
> still can clip easy without pushing the
> driver much. scp53

It is just 4ohm load and boost it too much for it. 8 ohm load and boost is fine..

All in all the 250 is not a bad amp for the money.
Doug

[scp53]

> It is just 4ohm load and boost it too much
> for it. 8 ohm load and boost is fine..

> All in all the 250 is not a bad amp for the
> money.
> Doug

Why would it be better on a 8 ohm load? At 8 ohms, the amp obviously has less power.

My whole point about the 250wt is that its a poor sub for my 10in titanic mk3 in a sealed box. Even with out the boost, it still clips easy on all but the deepest freq. IMHO, a nice 500 watt is needed to drive my titanic to its potential(especially on music).

scp53

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