Flexible pipe subwoofer

krokkie · 11th October 2007, 07:32 PM

Hi all

I remember seeing a design years ago consisting of a smallish speaker and a length of flexible ducting used as a sub.

I need more info on this type of design, or using pvc pipes. How do I calculate the length?

I want to build a sub for my Pajero, but do not want to take away too much space. I am thinking of installing it under the seats, or just behind it.

Any suggestions?

Regards

JinMTVT · 12th October 2007, 03:52 AM

that brings me to think of something ..

what happens to the rear wave ( or any wave )
that would travel through some enclosure
that it would inflate with the pressure or move?
would the wave dissipate using its power ??

sorry for highjackin ur thread

krokkie · 15th October 2007, 12:04 AM

Is there a way I can maybe use a PVC pipe mounted behind the seat?

How do I workout the length of the pipe?

djk · 16th October 2007, 06:27 AM

The large diameter sub was mounted to a board in the trunk (boot), and the flexible tube went up to the narrow rear deck (package shelf).

OzMikeH · 16th October 2007, 11:14 AM

You might be thinking of a transmission line sub. It'll never fit in a Pajero. (apologies to Spanish speakers out there, no profanity intended - they really did name a car that!)

They need to be a quarter wavelength long, HUGE. they are usually close to the diameter of the driver, not sure what will happen with a thinner pipe.

Suggest 8 or 10 inch very high excursion drivers with the highest efficiency you can find in a correctly designed sealed or bass reflex box. Make the footprint the same as an Engel (I think they're called an Ingl over there

) so you can pop it in and out if your get a car fridge and secure both of them safely with one of those slider thingies. If you put a fridge in for a trip you;ll need to remove the sub for the space, two birds and all that...

krokkie · 18th October 2007, 06:35 PM

Thanks Mike

It helps a lot, I think I might just spend more time setting up the 6x9's in the back, they should provide ample bass.

I don't really want to take away any space, especially in the rear, as the Pajero is used over weekends for fishing, etc, and it's a hassle to take out a sub all the time.

Cheers

Jacques

11th October 2007, 07:32 PM	#1
krokkie diyAudio Member Join Date: Oct 2007	Flexible pipe subwoofer Hi all I remember seeing a design years ago consisting of a smallish speaker and a length of flexible ducting used as a sub. I need more info on this type of design, or using pvc pipes. How do I calculate the length? I want to build a sub for my Pajero, but do not want to take away too much space. I am thinking of installing it under the seats, or just behind it. Any suggestions? Regards

16th October 2007, 06:27 AM	#4
djk diyAudio Member Join Date: Feb 2001 Location: USA	The large diameter sub was mounted to a board in the trunk (boot), and the flexible tube went up to the narrow rear deck (package shelf). __________________ Candidates for the Darwin Award should not read this author.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Flexible Cable	Kral57	Everything Else	0	10th September 2008 06:21 PM
Voigt tapered pipe as subwoofer	hahfran	Multi-Way	5	13th February 2008 08:43 PM
El-Pipe-O (El-Pipe-Mino) ???	JDeV	Multi-Way	21	26th October 2005 09:00 AM
flexible wire	johngalt47	Parts	5	10th January 2005 12:35 AM
Flexible plywood....	jonz	Multi-Way	4	5th June 2004 10:11 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

12th October 2007, 03:52 AM	#2
JinMTVT diyAudio Member Join Date: Jul 2004 Location: MTL	that brings me to think of something .. what happens to the rear wave ( or any wave ) that would travel through some enclosure that it would inflate with the pressure or move? would the wave dissipate using its power ?? sorry for highjackin ur thread

15th October 2007, 12:04 AM	#3
krokkie diyAudio Member Join Date: Oct 2007	Is there a way I can maybe use a PVC pipe mounted behind the seat? How do I workout the length of the pipe?

16th October 2007, 11:14 AM	#5
OzMikeH diyAudio Member Join Date: Mar 2007	You might be thinking of a transmission line sub. It'll never fit in a Pajero. (apologies to Spanish speakers out there, no profanity intended - they really did name a car that!) They need to be a quarter wavelength long, HUGE. they are usually close to the diameter of the driver, not sure what will happen with a thinner pipe. Suggest 8 or 10 inch very high excursion drivers with the highest efficiency you can find in a correctly designed sealed or bass reflex box. Make the footprint the same as an Engel (I think they're called an Ingl over there ) so you can pop it in and out if your get a car fridge and secure both of them safely with one of those slider thingies. If you put a fridge in for a trip you;ll need to remove the sub for the space, two birds and all that...

18th October 2007, 06:35 PM	#6
krokkie diyAudio Member Join Date: Oct 2007	Thanks Mike It helps a lot, I think I might just spend more time setting up the 6x9's in the back, they should provide ample bass. I don't really want to take away any space, especially in the rear, as the Pajero is used over weekends for fishing, etc, and it's a hassle to take out a sub all the time. Cheers Jacques

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)