HELP- Titanic MKIII 12"+Plate Dayton 500W

lascur · 13th November 2008, 09:23 PM

Hello.

I need help to design a enclosure for a Titanic 12"MKIII using a 500W Dayton plate.
My use will be 50% music and 50% movies.
I project at bassbox a vented enclosure with 3.1cf Fb in 25.05hz.
What about?

Someone can helpme on enclosure design?

THX,

Luis Scur

GM · 14th November 2008, 03:13 PM

Greets!

To cover most of the music including pipe organ and movie LFE requires either a low Qtc sealed alignment and enough room gain to keep from over driving it or an EBS alignment of ~4.64 ft^3 net tuned to ~16 Hz. The latter requires such a large/long vent to keep vent mach low that either a PR (preferably two) or a damped ducted port be used. WRT the latter, cab Vb needs to at least double (>9.28 ft^3) to offset the gain BW loss.

The better solution if you don't want the expense of PRs or such a large cab is to make the whole cab a damped vent of sorts, so a damped to suit TQWT (reverse tapered TL) is my recommendation and can be calc'd using MJK's Classic TL Alignment tables: http://www.quarter-wave.com/TLs/Alignment_Tables.pdf

GM

Renron · 1st December 2008, 04:28 PM

link to my build........sorry forgot it in the email ..............DOH..........!

sub build

Ron

lascur · 1st December 2008, 05:01 PM

Did you finish it?

auplater · 1st December 2008, 05:31 PM

You could always build a sonosub... saves having to build an enclosure (just the end caps)... and there are build threads all over the internet...

Titanic 12" f(b) ~18 Hz

John L

Renron · 1st December 2008, 06:01 PM

And if wrapped in carpet, the kitty could always use it for a scratching post!

Sonotube subs work awesome, but IMO they look like a water heater painted black.

LOL........my sub looks like a cardboard box painted black.....:O

Make sure to post pictures!

Ron

Renron · 1st December 2008, 06:06 PM

Quote:

Originally posted by GM
Greets!

The better solution if you don't want the expense of PRs or such a large cab is to make the whole cab a damped vent of sorts, so a damped to suit TQWT (reverse tapered TL) is my recommendation and can be calc'd using MJK's Classic TL Alignment tables: http://www.quarter-wave.com/TLs/Alignment_Tables.pdf

GM

WOW, Great idea a transmission line sub!
That would be a fun (and productive) project!

Ron

auplater · 2nd December 2008, 12:51 PM

Quote:

Originally posted by Renron
And if wrapped in carpet, the kitty could always use it for a scratching post!

Sonotube subs work awesome, but IMO they look like a water heater painted black.

LOL........my sub looks like a cardboard box painted black.....:O

Make sure to post pictures!

Ron

If you make them big enough, the sound pressure keeps the cat away..

Plus, ours doesn't have any front claws...

This one's EBS alignment, with -3dB @ 20 Hz, 108 dB... cost maybe $90 total using cheapo car sub driver..

John L.

Renron · 2nd December 2008, 03:53 PM

Auplater,
You've got a great wifee, treat her well......

Ron

13th November 2008, 09:23 PM	#1
lascur diyAudio Member Join Date: Nov 2008	HELP- Titanic MKIII 12"+Plate Dayton 500W Hello. I need help to design a enclosure for a Titanic 12"MKIII using a 500W Dayton plate. My use will be 50% music and 50% movies. I project at bassbox a vented enclosure with 3.1cf Fb in 25.05hz. What about? Someone can helpme on enclosure design? THX, Luis Scur

14th November 2008, 03:13 PM	#2
GM diyAudio Member Join Date: Jun 2003 Location: Chamblee, Ga.	Greets! To cover most of the music including pipe organ and movie LFE requires either a low Qtc sealed alignment and enough room gain to keep from over driving it or an EBS alignment of ~4.64 ft^3 net tuned to ~16 Hz. The latter requires such a large/long vent to keep vent mach low that either a PR (preferably two) or a damped ducted port be used. WRT the latter, cab Vb needs to at least double (>9.28 ft^3) to offset the gain BW loss. The better solution if you don't want the expense of PRs or such a large cab is to make the whole cab a damped vent of sorts, so a damped to suit TQWT (reverse tapered TL) is my recommendation and can be calc'd using MJK's Classic TL Alignment tables: http://www.quarter-wave.com/TLs/Alignment_Tables.pdf GM __________________ Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.

1st December 2008, 04:28 PM	#3
Renron diyAudio Member Join Date: Jan 2007 Location: Sacramento	link to my build........sorry forgot it in the email ..............DOH..........! sub build Ron __________________ "If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3 "I fired up the prototype. Literally." The Prophet Pass.

1st December 2008, 05:31 PM	#5
auplater diyAudio Member Join Date: Apr 2005 Location: KyOhWVa tristate	maybe one of these? You could always build a sonosub... saves having to build an enclosure (just the end caps)... and there are build threads all over the internet... Titanic 12" f(b) ~18 Hz John L __________________ "...His brain is squirming like a toad..." Jim Morrison

1st December 2008, 06:01 PM	#6
Renron diyAudio Member Join Date: Jan 2007 Location: Sacramento	And if wrapped in carpet, the kitty could always use it for a scratching post! Sonotube subs work awesome, but IMO they look like a water heater painted black. LOL........my sub looks like a cardboard box painted black.....:O Make sure to post pictures! Ron __________________ "If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3 "I fired up the prototype. Literally." The Prophet Pass.


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1st December 2008, 05:01 PM	#4
lascur diyAudio Member Join Date: Nov 2008	Did you finish it?

2nd December 2008, 03:53 PM	#9
Renron diyAudio Member Join Date: Jan 2007 Location: Sacramento	Auplater, You've got a great wifee, treat her well...... Ron __________________ "If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3 "I fired up the prototype. Literally." The Prophet Pass.

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