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Old 7th March 2008, 05:00 PM   #701
XT8510 is offline XT8510  Netherlands
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Join Date: Dec 2004
Location: Rotterdam

Its bass reflex and turned out quite nice sounding. Vent is located at the rear of the cabinet with a flare to the outside.
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Old 7th March 2008, 05:24 PM   #702
felixx is offline felixx  Romania
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Location: in center
Can you post a pic with the back ?
"I'm glad I can build my own mistakes."
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Old 7th March 2008, 06:08 PM   #703
XT8510 is offline XT8510  Netherlands
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Location: Rotterdam
Unfortunately I have no picture of the back.
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Old 10th March 2008, 10:29 PM   #704
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Join Date: Jan 2002
Location: Tyrone Ga. U.S.A.
Here is a pic of a Sony 133-11 16 ohm. the Radioshack 1197
is there for a size reffference. Anyone know anything about this driver I have never played with it other toys always came first.
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Old 17th March 2008, 10:44 PM   #705
adason is offline adason  United States
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Location: Maryland
my work full range system
spud amp and 4" TB
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Old 22nd March 2008, 05:15 PM   #706
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Join Date: Mar 2008
Default Full Range Line Array

This is my Dipole Line Array,

it needs a subwoofer for full bass performance
below 70 Hz, so it is a FAST system in fact.

On the rear of the open baffle there is a
tweeter panel which adds the highs missing
in the backward radiation of the fullrange drivers.

This is to optimize polar radiation characteristcs
and to ensure enough power above 2 Khz in the
far field.

For listening distances up to 3m you won't miss
(or even notice) the tweeter panel. At higher
distances it is a real improvement.


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Oliver, RFZ believer (?)
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Old 28th March 2008, 04:37 AM   #707
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Join Date: Aug 2004
Location: Finland
Smile 3 cubic ft sealed box and Axiette

These chipboard speaker cabinets are sealed. The inside volume of each is 3 cubic feet. It seems that originally they were meant to be bass reflex subwoofers. Someone removed drivers, reflex tubes and terminals, and abandoned boxes. I don't know who built them or why they were left in the cellar. It would be interesting to know. I installed 8 inch Goodmans Axiette 101 full range drivers into them. I filled the boxes with polyester wadding. I am quite sure that the edges of front baffles cause diffractions and colorate the sound, but I like the speakers anyway.

I did not want any filters. The only electronics in the speakers are the drivers, some wire and terminals.

For those who wonder what is in front of the drivers: It is a stainless steel wire mesh.
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High-order harmonics are more offensive than low.
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Old 2nd April 2008, 05:39 PM   #708
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Join Date: Jan 2006
Location: Hot and Humid
Default Fostex FE206E in Dallas III cabinets

Fostex FE206E in Ronc's Dallas III Cabinets.....
Read about my build in my
diy audio blog

Click the image to open in full size.

diyAudio discussion thread here

Seize the day
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Old 3rd April 2008, 11:21 PM   #709
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Join Date: Sep 2005
Location: the leafy west of Brisbane
Default "Zombies" - Petroff cabinets rise from the dead

I scored a pair of interestingly-shaped cabinets on *Bay. Petroff Labs.
(Some Googling revealed they had never been anything that had set the world on fire.)
The veneer was in virtually perfect condition, though the woofers' and mids' surrounds had rotted. (They were nothing special anyway.) What was a real bonus was they were each fitted with a vintage Foster ribbon tweeter. A quick check confirmed the ribbons were A-OK.

What to do ...

I had seen - on the Planet 10 site (Thanks Dave!) - the plans for the Alegria Rosa TMM:

I also saw the Occam Audio site:
www.occamaudio.com/Products.html (refer to "Occam MTM". See also the box plan.)

I was encouraged to give it a go, and the results are pictured. (Excuse the untidy state, as I've not yet puttied, sprayed, etc.)

Four WR125ST's were obtained from Darcher Audio. (Thanks Dan!)

After a few hours burn-in, the sound is great!

Frugal-philes of the world rise up! :-)

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File Type: jpg petroff zombies 5.jpg (55.0 KB, 3717 views)
A speaker-builder's parable: "That burned down, fell over, then sank into the swamp. But the fourth one stayed up. And that's what you're going to get, Lad, the strongest castle of all."
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Old 5th April 2008, 06:42 AM   #710
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Join Date: Sep 2004
Location: Brisbane, Australia
Default Re: "Zombies" - Petroff cabinets rise from the dead

Originally posted by Brisso57
I scored a pair of interestingly-shaped cabinets on *Bay. Petroff Labs. (Some Googling revealed they .............
Doug - Big box, might be good to explain what volume you reduced the innards to and what dia/length port you used?

Cheers- Phil
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