One Day Wall... *pics inside*

TWOJZ · 24th November 2007, 08:53 PM

I decided to enter a local SPL competition (first one here in ages) but, they pretty much had no rules...

there were two classes, "novice" and "pro"... novice, is one 12inch sub, two 10inch subs, or less... pro, is anything more than that...

walls are allowed, second batteries are allowed, engine is allowed to be reving to 2000rpm...

so, friday morning, about 11am, a wall was started... the competition was saturday at 11am...

300litres, tuned to 35Hz... (edit, ended up being 330litres, tuned to 37Hz maybe a bit lower)

second battery has been added (bolted to the passenger side floor) DD Z1 is running the subs

TWOJZ · 24th November 2007, 09:03 PM

its 330litres, tuned to about 35Hz...

MadMutt · 24th November 2007, 11:03 PM

And ?????

Suspense is killing..

Also, would it not work better if the 'wall' was up the back ?
Wouldn't that help with some sort of loading effect ?

grjr · 24th November 2007, 11:08 PM

Isn't 35Hz low for SPL? If you had it tuned higher it would probably be more efficient and you'd get more SPL out of it. Good luck with it though and have fun

TWOJZ · 25th November 2007, 12:41 AM

tuning high is no fun!

I want loud music!

adason · 25th November 2007, 12:57 AM

Also, would it not work better if the "wall" had speakers?

Clipped · 25th November 2007, 02:53 AM

cool, i was thinking about doing a similiar setup, but with 3 each side vertical...but may be going with 9 -12's instead...

what kinda subs you got in there? and amps?

get loud?

btw i have the same vacuum cleaner...

ppia600 · 25th November 2007, 03:10 AM

I think you are going to wake the kitten

Are you going to seal the cabin from the box back?

TWOJZ · 25th November 2007, 08:43 AM

did 150.6dB at 40Hz...

I need to seal the box from the cabin...

cat was meant to be my helper!

I measured the amplifiers current draw later, and found out that I was only giving the subs about 1300watts rms...

luka · 25th November 2007, 10:46 AM

Hi

Only 1300w? How did you wired speakers? what was voltage on bat when you measured that current, which was?

24th November 2007, 08:53 PM	#1
TWOJZ Account Disabled Join Date: Sep 2007	One Day Wall... pics inside I decided to enter a local SPL competition (first one here in ages) but, they pretty much had no rules... there were two classes, "novice" and "pro"... novice, is one 12inch sub, two 10inch subs, or less... pro, is anything more than that... walls are allowed, second batteries are allowed, engine is allowed to be reving to 2000rpm... so, friday morning, about 11am, a wall was started... the competition was saturday at 11am... 300litres, tuned to 35Hz... (edit, ended up being 330litres, tuned to 37Hz maybe a bit lower) second battery has been added (bolted to the passenger side floor) DD Z1 is running the subs

25th November 2007, 03:10 AM	#8
ppia600 diyAudio Member Join Date: Jun 2007 Location: Louis y ana	I think you are going to wake the kitten Are you going to seal the cabin from the box back? __________________ Don't worry... you can always turn the gain down!

25th November 2007, 10:46 AM	#10
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	Hi Only 1300w? How did you wired speakers? what was voltage on bat when you measured that current, which was? __________________ home page @ http://www.classdaudio.co.cc @ 24/7 all year long I FEEL SLOVENIA

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24th November 2007, 09:03 PM	#2
TWOJZ Account Disabled Join Date: Sep 2007	its 330litres, tuned to about 35Hz...

24th November 2007, 11:03 PM	#3
MadMutt diyAudio Member Join Date: Nov 2006	And ????? Suspense is killing.. Also, would it not work better if the 'wall' was up the back ? Wouldn't that help with some sort of loading effect ?

24th November 2007, 11:08 PM	#4
grjr diyAudio Member Join Date: Sep 2007	Isn't 35Hz low for SPL? If you had it tuned higher it would probably be more efficient and you'd get more SPL out of it. Good luck with it though and have fun

25th November 2007, 12:41 AM	#5
TWOJZ Account Disabled Join Date: Sep 2007	tuning high is no fun! I want loud music!

25th November 2007, 12:57 AM	#6
adason diyAudio Member Join Date: Nov 2004 Location: home sweet home	Also, would it not work better if the "wall" had speakers?

25th November 2007, 02:53 AM	#7
Clipped diyAudio Member Join Date: Mar 2005 Location: home	cool, i was thinking about doing a similiar setup, but with 3 each side vertical...but may be going with 9 -12's instead... what kinda subs you got in there? and amps? get loud? btw i have the same vacuum cleaner...

25th November 2007, 08:43 AM	#9
TWOJZ Account Disabled Join Date: Sep 2007	did 150.6dB at 40Hz... I need to seal the box from the cabin... cat was meant to be my helper! I measured the amplifiers current draw later, and found out that I was only giving the subs about 1300watts rms...

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