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Old 18th March 2007, 03:13 PM   #521
Fuling is offline Fuling  Sweden
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Heres how they look unfolded and in position:
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Old 18th March 2007, 03:15 PM   #522
Fuling is offline Fuling  Sweden
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A view from behind:



Its obvious that these speakers will need a lot of bracing before they start to sing, but the sound is already quite impressive.
No immediate need for subwoofers!
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Old 18th March 2007, 05:28 PM   #523
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Hej Fuling!
Hope you have a table to eat breakfast at tomorrow

Nice 'an' simple!

Cheers
Peter
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Old 18th March 2007, 08:49 PM   #524
Fuling is offline Fuling  Sweden
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Hej Peter!

Look at it this way: now I have two brand new tables to eat breakfast at
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Old 18th March 2007, 10:29 PM   #525
Geoff H is offline Geoff H  Australia
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Don't you dare put food on those!
They look great. Eat on the couch.
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Old 18th March 2007, 10:45 PM   #526
Fuling is offline Fuling  Sweden
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Thanks Geoff!

Dont worry about food, the only thing Ill put on those baffles are a lot of bracings and some oil or lacquer.

Ive been listening to these speakers all day and what I said about not needing subwoofers was perhaps a bit optimistic.
The first impression of the bass response was better than expected, but the lowest notes on a doublebass sounds more like someone slapping a stretched rubberband than playing a bullfiddle.
I definitely want to avoid the "boomy" sound associated with vented boxes, so any extra bass drivers will be put in sealed cavities.
Im thinking something in the lines of two 5,25" or 6,5" drivers in a straight line below the Fostex drivers with a closed cab protruding behing the baffle.
I want useable output down to 40Hz, no deeper.
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Old 18th March 2007, 11:18 PM   #527
Geoff H is offline Geoff H  Australia
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Hi Peter,

This may be worth looking into: http://www.diyaudio.com/forums/showt...32#post1154032

I find the biggest problem with OBs is shutting them down! I have 2 20y/o 6" panasonics still in the original boxes, with the rear panel off, and partly modded.

They have been playing the sound track from Big Blue (French vers) for about 3 days! The plans are done. The timber is there. I guess the Makita does not sound as nice as the sound track.

Geoff
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Old 19th March 2007, 03:39 PM   #528
Fuling is offline Fuling  Sweden
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(Am I perhaps being confused with Peter?)

Anyway, Ive seen those slightly weird looking bass enclosures but I have some doubts about the design.

Ive spent a couple of hours today listening to two different pairs of subwoofers along with my baffles, one pair of small sealed boxes with Peerless 5,25" drivers and one pair of big BR boxes with Scanspeak 8545.
They obviously sounded quite different, but in the end I prefered the sealed systems because of their more defined bass response.
OTOH the Scanspeak drivers are much higher quality than the (cheap) Peerless ones, so Ill probably end up using the Scanspeaks in closed boxes (integrated in the open baffles).

The next step will be to cut holes for the 8545s in the baffles and try them without boxes. Im not expecting them to deliver enough bass in open air, but as long as there is even a small chance Ill try it.
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Old 20th March 2007, 02:27 AM   #529
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Default Pottery speakers

1/4" ceramic enclosure, closed with a 1/4" mdf circle, expoxyed in place. Drivers are the HiVi A2S.

This continues my journey in tiny computer speaker. My first tiny speakers were built out of a 12" transmission line speakers capped with 1" HiVi B1S.

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Old 20th March 2007, 07:50 AM   #530
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I finally finished my BiTonkens.

Here is something i drew up in SketchUp, yes baffles are missing. Its so that it is easier to understand the design. Mine actually has more bracing, but i didn't want to spend too much time in SketchUp. I'll try to take a picture of the actual speakers as soon as i get my hands on a camera.


Josh


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