New TL subs

bigwill · 20th September 2005, 06:04 PM

After being a general nuisance with lots of questions on the forums for the past few months, I finally have something to contribute

Behold, my new stereo transmission line subs!

More pics coming shortly

bigwill · 20th September 2005, 06:12 PM

Closeup...

Side view

Back view

hooha · 20th September 2005, 08:30 PM

Nice and clean looking - just the way I like it. My hats off to you, building decent TLs have always been a challenge.

What driver is that?

Mark

bigwill · 20th September 2005, 08:38 PM

Quote:

Originally posted by hooha

What driver is that?

Mark

MCM 55-1480 ...about $30 (£18)

Despite being a cheapo, it works well

Bass is fast and deep. One song hit about 20Hz at one point. Very impressive performance for such a cheap driver

Things I need to do

1. Figure out why one sub sounds slightly different to the other (probably a placement issue, or a difference between the drivers)

2. Put stuffing in the TL. At the moment there's nothing, despite this it isn't boomy at all.

3. Finish my active XO to integrate them properly. They're running full range at the moment, with just the tweeters of the bookshelf speakers wired up in parallel! As horrific as it sounds, it doesn't sound too bad

hooha · 20th September 2005, 08:52 PM

Quote:

Originally posted by bigwill

1. Figure out why one sub sounds slightly different to the other (probably a placement issue, or a difference between the drivers)

Easy way to check at this early stage would be to swap them around - this will determine if its a placement issue.

Quote:

2. Put stuffing in the TL. At the moment there's nothing, despite this it isn't boomy at all.

No surprise there...

Quote:

3. Finish my active XO to integrate them properly. They're running full range at the moment, with just the tweeters of the bookshelf speakers wired up in parallel! As horrific as it sounds, it doesn't sound too bad

FULL RANGE??!! OMG!!

Mark

bigwill · 20th September 2005, 08:58 PM

The clean look of the woodworking is due to the fact that I didn't do much of it, my good friend helped

bigwill · 22nd September 2005, 07:03 PM

UPDATE

I'm now running them properly crossed over and they sound fantastic

They're very musical and go nice and deep

zobsky · 22nd September 2005, 07:18 PM

plans ?

bigwill · 22nd September 2005, 07:24 PM

Quote:

Originally posted by zobsky
plans ?

They're very simple to make

So simple that I didn't need any plans, but I can quickly draw some on the computer if you want

It may well be worth putting the plans on a website, it's such a simple design and so far seems to be a very effective

bigwill · 22nd September 2005, 08:13 PM

Here are the plans in all their MS Paint glory

Things I forgot on the diagram:

The gap behind the driver is 8" long, and the other gap at the other fold is 6" long

I like the way all the lengths in this design are either 10", 8", 6" or 4"

20th September 2005, 06:04 PM	#1
bigwill diyAudio Member Join Date: Dec 2004 Location: UK	New TL subs After being a general nuisance with lots of questions on the forums for the past few months, I finally have something to contribute Behold, my new stereo transmission line subs! More pics coming shortly

20th September 2005, 08:30 PM	#3
hooha diyAudio Member Join Date: Apr 2005 Location: Winnipeg, Manitoba	Nice and clean looking - just the way I like it. My hats off to you, building decent TLs have always been a challenge. What driver is that? Mark __________________ Breaking speed records - http://www.mach5audio.com

22nd September 2005, 07:18 PM	#8
zobsky diyAudio Member Join Date: Mar 2002 Location: Dallas, Tx, USA	plans ? __________________ "Any fool can know. The point is to understand" - Albert Einstein

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20th September 2005, 06:12 PM	#2
bigwill diyAudio Member Join Date: Dec 2004 Location: UK	Closeup... Side view Back view

20th September 2005, 08:58 PM	#6
bigwill diyAudio Member Join Date: Dec 2004 Location: UK	The clean look of the woodworking is due to the fact that I didn't do much of it, my good friend helped

22nd September 2005, 07:03 PM	#7
bigwill diyAudio Member Join Date: Dec 2004 Location: UK	UPDATE I'm now running them properly crossed over and they sound fantastic They're very musical and go nice and deep

22nd September 2005, 08:13 PM	#10
bigwill diyAudio Member Join Date: Dec 2004 Location: UK	Here are the plans in all their MS Paint glory Things I forgot on the diagram: The gap behind the driver is 8" long, and the other gap at the other fold is 6" long I like the way all the lengths in this design are either 10", 8", 6" or 4"

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