Build your own 2x12" TH (The Kraken 212 TH) - Page 34 - diyAudio
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Old 28th December 2012, 08:08 PM   #331
Forsman is offline Forsman  Sweden
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Location: Gothenbug
Quote:
Originally Posted by Lordgunnar View Post
Is it possible to use thiner plywood than 19mm or mdf 19mm?

What is the best glue for this build, availible in Europe?
I would strongly recomend agains using thiner plywood then Petter has specified. Theoretically you could but you had to compensate with a huge amount af bracing and I am convinced it will not be easier and probably not better.

When it comes to glue i recomend some kind of PU-Glue (polyutherane based glue) It is easy to work with and have the fantastic feture that it expands and fills evry little crack and gap and thus makes the horn path air tight. Dont get it on your finger though, it will stain them and the only way to get rid of it is with a rasper.

kind regards
/Fredrik
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Last edited by Forsman; 28th December 2012 at 08:09 PM. Reason: spelling
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Old 28th December 2012, 08:17 PM   #332
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Quote:
Originally Posted by epa View Post
curius ,what ressistor nw you use?
Quote:
Originally Posted by DrDyna View Post
I'd like to figure out how to do this too, if I can get the hpf running at line level ~15 hz it's one less thing I need the MiniDSP for.
Quote:
Originally Posted by weltersys View Post
In real life, you always hear the sound after you see the event, roughly one millisecond delay for each foot distant from the event.

By adding delay to the video to "fix it correctly" you are making it unreal.
I understand that light is faster than sound, but this a big delay. It's almost like across a football field delay (old science class experiment clapping boards together) when the scene is filmed with you supposed to be right in with the action. Maybe it's my receiver or the way the audio was mixed. I don't have the equipment to check it.
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Old 28th December 2012, 09:15 PM   #333
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Quote:
Originally Posted by epa View Post
curius ,what ressistor nw you use?
Quote:
Originally Posted by DrDyna View Post
I'd like to figure out how to do this too, if I can get the hpf running at line level ~15 hz it's one less thing I need the MiniDSP for.
The secondhand QSC amp came with the SF-1 subwoofer filter.
It's chart is as follows.
hz ohm
20 82000
25 68000
32 56000
35 47000
40 39000
50 33000
63 27000
80 20000
100 18000
135 12000
160 10000
200 8200
250 6800
I originally used linear interpolation. This was incorrect however. It should have been a form of logarithmic interpretation.
Using excel a 100k ohm should give a 15.4 hz highpass filter if you follow the curve generated by the trend line.

Unfortunately I don't have the equipment to test this however.
The forum is not letting me include a picture of the excel unfortunately.

Click the image to open in full size.
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Old 28th December 2012, 09:54 PM   #334
epa is offline epa  Netherlands
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Quote:
Originally Posted by tlivingd View Post
The secondhand QSC amp came with the SF-1 subwoofer filter.
It's chart is as follows.
hz ohm
20 82000
25 68000
32 56000
35 47000
40 39000
50 33000
63 27000
80 20000
100 18000
135 12000
160 10000
200 8200
250 6800
I originally used linear interpolation. This was incorrect however. It should have been a form of logarithmic interpretation.
Using excel a 100k ohm should give a 15.4 hz highpass filter if you follow the curve generated by the trend line.

Unfortunately I don't have the equipment to test this however.
The forum is not letting me include a picture of the excel unfortunately.

Click the image to open in full size.
i use a simular type of filter(uf-2) on my qsc amps
thats why i sugested the 100k here
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Old 10th November 2013, 09:29 PM   #335
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Hey sorry to bump this thread back open, but would anyone still have the plans to build this?
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Old 10th November 2013, 10:13 PM   #336
barco is offline barco  Sweden
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Location: Stockholm area, Sweden
Quote:
Originally Posted by DariusMyszka View Post
Hey sorry to bump this thread back open, but would anyone still have the plans to build this?
Sure, what do you need?

Some is here : http://www.faktiskt.se/modules.php?n...wtopic&t=47472

Anything else needed?
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Old 11th November 2013, 07:36 AM   #337
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Quote:
Originally Posted by barco View Post
Sure, what do you need?

Some is here : http://www.faktiskt.se/modules.php?n...wtopic&t=47472

Anything else needed?
I think thats all i would need to build it, thanks alot!
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Old 14th January 2014, 01:29 AM   #338
jpmst3 is offline jpmst3  United States
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Awesome thread!

All the pictures seem to be broken. Is there any way to fix those?
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Old 14th January 2014, 02:05 AM   #339
jdubs is offline jdubs  United States
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Location: NYC
Great thread indeed!! Is there any measurement data for the 2x12 and / or 2x10?

Trying to figure out how I can shoehorn one of these beasts behind my TV / cabinet....

-Jim
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Old 14th January 2014, 07:03 AM   #340
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I can see all the pictures so I am not sure what is going on.(Mozilla)
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