352 replies to this topic

[Pulse-R]

as I said - 142dB off 2x 10's running 800W, in a commodore wagon.
soon we'll see what that gives at 2kW (in theory, 146). and then I'll put the good woofers in - should get another 1 or 2dB from that.

should be able to get 150+ with 10's off a few kW.
if the windscreen doesn't break first.
I need a smaller car for dB stuff...

[Shinanigans]

Interesting! I don't like the idea of a tuned ported box just for the fact that i'll be listening to music daily.

Anyone wanna build me one of these?

[20Hurtz]

yep i just did. I built my wicked one for everyone so that they could give it a go.

Just takes a fair bit of patience, maybe a bit of help from the oldies, i had to get the old boy to help me a couple of times, sometimes you just don't have enough hands lol.

[20Hurtz]

first lab results are in.

139.2 from two 10" sony pentagons in a sedan (n16 pulsar)

My mate is buying two DD1010's and we are building another wicked one for him, this time i will use the approriate bracing and maybe even port the sealed section.

in his s coupe sedan i am hoping for 145+

[VB-]

20 hurtz, how much power were u feeeding the woofers when you made the 139, im assuming it wasnt the 2.5kw mentioned in an earlier post?

have u tried flipping the box around to that the horn/big opening/whatever u call it faces into the cabin? how did it sound?

[20Hurtz]

a sine wave at 139.2 there isn't much to hear lol hmm my ears are still aching a little

I have absolutley no idea how much power i was puting through them mate (but i was using the JBL amp), at a rough guess i would say they were running about 300 true watts a piece, I don't think they could have handled much more power as they seemed to be losing control.

no i didn't try flipping it around was a bit pressed for time and do'nt htink that i would ahve gained.

from what i have read my set up would have qualified for street A.

forgot to mention the 139.2 was at 45Hz which from the quick testing i did before the burp seemed to be the peak frequency.

[VB-]

i was more thinking about SQ when flipping it around, i know most people face it rearwards for bass loading or whatever, but some sound better facin forwards...

[zion187reigneth]

Pulse-R, on Dec 29 2006, 08:01 PM, said:

I need a smaller car for dB stuff...

back fill the rear seats with custom foam blocks?, a bolt on internal roof to lower it 20 mm from the frontseats back ?,.
I am enjoing this thread as i am thinking of ways to build a box for a single 12.....................cors

[Pulse-R]

139.2 - exactly what mine did on its first run (in the commodore again), but at 46Hz. I know they like about 15 inches of space after the opening to 'load' into.
Haven't tried firing forward yet....
bit hard in StA, as the seat needs to be folded down

[20Hurtz]

mine was the 24" version (shortest recomended) and pushing it all the way bakc so its back up agianst the back seats i get about 8cm between the mouth and the bootlid. that would qualify for street a yeh? nothing is above the window line and no sub or sub amps that are not in the boot?

[Pulse-R]

most definitely StA.

[Charger]

Here's the wicked one I constructed last year. It was built on the largest dimensions and held two Kicker Comp VR 10" woofers. I designed it to be used as a coffee table in my house but I still haven't got around to finishing it! The bottom needs more filler + sanding and a finish off with a coat of gloss black.






I have a helluva lot more indepth photos as I built this over like a 3 month period so if anyone has any requests for something that wasn't covered in this great tutorial, don't hesitate to ask!

[mazda626]

have u fired it up??

hwo does it sound

[Charger]

Off 80w total it was kinda loud. However I felt the horn didn't disperse much sound, being loud in only certain parts of the room.

[Pulse-R]

yes, the horn definitely works best loaded off a wall, or something.