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Old 7th July 2013, 02:35 PM   #11
tigrine is offline tigrine  Canada
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For those who would like to build the triangle cab , here's the plan.
Dimensions are in mm. Divide the size by 25.4 (25,4 mm = 1")
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Old 7th July 2013, 08:44 PM   #12
DrBoar is offline DrBoar  Sweden
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The Lowther Accousta 115 at least is a terrible choise that I did with the 9710. The horn does not work with that driver and facing forward the drivers sound shrill. The 9710 is intended to face upwards or away from the listener. It predates stereo.
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Old 7th July 2013, 09:35 PM   #13
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i build a TQWT with the 9710/M8 as driver and i just love it and it is just 26.4 (cm) wide.
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Old 8th July 2013, 06:09 PM   #14
bjorno is offline bjorno  Sweden
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Quote:
Originally Posted by Xerxes75 View Post
i build a TQWT with the 9710/M8 as driver and i just love it and it is just 26.4 (cm) wide.
Hi Xerxes,

Your design is IMO the way to go,way better than the suggested 'German' box proposed here-above:
The design is IMO a Lemon Design...

Luckily the opinion what's an acceptable FR is very varied but if ignoring to present an acoustic load in the vicinity of fs is a method I never have encountered before..

I've used 9710M in more than 50 build since 1968 and all were survivors ...over time.

b
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Old 9th July 2013, 01:11 PM   #15
PET-240 is offline PET-240  Australia
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Gday Xerxes,

Could you please add more detail regards measurements, material and thickness and stuffing etc.
Please email me the info if that works?
Thanks,
Drew
I dont know how I just changed font size.....
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Old 9th July 2013, 01:30 PM   #16
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hi Pet-240

well i don't have al kinds or measurements like Bjorno but i have off course the dimensions etc. I will send you a PM when i have them.
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Old 9th July 2013, 02:14 PM   #17
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Default dimensions etc.

Well i wrote that i would sent a PM but maybe there are more people who want something like this. so in the attachment there is a quick drawing i made just now.

I filled the bottom with fine sand for stability and all the sides (except the baffle backside) with under carpet. There is no filter or BSC.

all the panels except the baffle are 22mm MDF the front is 24mm (or 2x12mm) plywood.

but if you are limited with space you could build a small Briggs cabinet (see attachment) this is simple, small and sounds great.
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File Type: jpg IMG_0074.jpg (415.1 KB, 197 views)
File Type: jpg IMG_0223.jpg (110.5 KB, 193 views)
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File Type: pdf tqwt.pdf (264.6 KB, 45 views)
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Old 18th July 2013, 06:46 AM   #18
GM is offline GM  United States
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Quote:
Originally Posted by IG81 View Post
Just how large would you make it for a "no-compromise" (I know - there always are, but still...) reflex or TQWT?

IG
Well, for a T/S max flat alignment tuned to ~35 Hz, a MLTL is around 60" high and ~18" square or ~8.733 ft^3 net.

A TQWT is similar sized, just shaped differently.

GM
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Old 18th July 2013, 11:13 AM   #19
PET-240 is offline PET-240  Australia
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Hey GM,

Can you advise any differences between the two regards sound, speed, decay etc please?
Also what size diffrrence are you thinking for the TQWT?

Thanks,
Drew
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Old 18th July 2013, 01:28 PM   #20
IG81 is offline IG81  Canada
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Quote:
Originally Posted by GM View Post
Well, for a T/S max flat alignment tuned to ~35 Hz, a MLTL is around 60" high and ~18" square or ~8.733 ft^3 net.

A TQWT is similar sized, just shaped differently.

GM
Thanks GM!

My "accidental MLTL" estimation is pretty much in line with this. Such a box might put out some pretty good bass, though GD may be about as high as tolerable (I don't know what my threshold is here though). I do not own my pair of 9710 anymore, but still keep an interest in these special drivers.

IG
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