Collaborative Tapped horn project - Page 286 - diyAudio
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Old 29th January 2009, 01:22 PM   #2851
tinitus is offline tinitus  Europe
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Sorry Cowan, maybe I shouldnt have quoted you like that


Heres a longer one
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Old 29th January 2009, 01:23 PM   #2852
tinitus is offline tinitus  Europe
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And heres a VERY long one...Volvotreter show a smilar one on his site
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Old 29th January 2009, 02:11 PM   #2853
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Quote:
Originally posted by cowanaudio

Thanks in advance for the effort. So few people are actually making saw dust, most are just speculating.

Cheers

William Cowan [/B]
Please don't be impatient sir. Haste makes waste. My measurement equipment is no more fancy than aceinc but you will have measurements from me too.

I'm still searching for answers to some of the questions I've asked, but in the meantime I'm pushing forward.

I've built a sealed box and got preliminary t/s measurements using LIMP. The results are consistant (the same every time) but don't make much sense so far and are way off manufacturer's specs. I think some of that has to do with their factory SD spec that I was using. They say 140 cm but if you calculate the cone area and 1/3 of the surround (as specified by LIMP) the actual cone area is almost 1/3 less than specified. Anyway, I'm hoping to sort this out within a day or 2, and then it's all systems go on the tapped horn.

This is the first time trying to measure driver parameters accurately, so I'm not going to rush it. Also, I don't have a heated workspace and I draw the line at -5 degrees C or thereabouts, so no estimate on completion date on the tapped horn build.
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Old 29th January 2009, 02:39 PM   #2854
tinitus is offline tinitus  Europe
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Quote:
Originally posted by just a guy


so no estimate on completion date on the tapped horn build.

Its solely up to you, and you only
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Old 29th January 2009, 02:47 PM   #2855
tb46 is offline tb46  United States
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Default Driver ? Post #2853

Hi just a guy (Post #2853),

I think aceinc (Post #2848) and cowanaudio (Post #2849) were talking about the CSS TRIO-8 8" driver, its Sd=213cm^2.

If the Sd=140cm^2 you may be talking about the TangBand W6-1139SI.

It would be nice if you could include a reference as to which driver you are talking about.

Regards,
Oliver.
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Old 29th January 2009, 03:00 PM   #2856
tb46 is offline tb46  United States
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Default Posts #2847 and #2852

Hi tinitus,

I liked your idea in Post #2847. The one in Post #2852 has been around for a while, take a look Don Snyder's post at Page #90, Post #2233.

Regards,
Oliver.
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Old 29th January 2009, 03:25 PM   #2857
tinitus is offline tinitus  Europe
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Default Re: Posts #2847 and #2852

Quote:
Originally posted by tb46
Hi tinitus,

I liked your idea in Post #2847.
Oliver.

Thanks


Me too...its funny, but its almost like its relaxing to look at this folding

in my files I have named it "Tapped Spiral Duo"

And heres the one I might do with a single SS XXLS 10"(alucone) ... I call it "Tapped Spiral Solo"
High SPL is not my goal, so with a quality driver I see no need fore pushpull

In case you missed it ... the TRIO8 in PP doesnt seem to need any special arrangements fore its magnet to fit in the throath


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Old 29th January 2009, 04:17 PM   #2858
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I'm always talking about the tang band w6-1139 unless specifically stated otherwise. Those are the drivers I bought, those are the ones that need boxes.

Point taken though, I'll include driver info with my posts.
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Old 29th January 2009, 05:25 PM   #2859
aceinc is offline aceinc  United States
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tinitus, I realize that I don't need to put in the 60 degree angle piece in order to accomadte the magnet. But, do I need the additional space, or the angle, to provide better sound?

If I don't need the angle then there I wouldn't need the side access panel, and generally it would make it a simpler build.

The actual depth is 90 mm + 5mm when the bezel is taken into consideration. Addiditonally if the wood is continued it would shrink from 100mm to about 97mm where it meets the wall. Is 3-5 mm to close for proper cooling?

Paul
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Old 29th January 2009, 06:16 PM   #2860
tinitus is offline tinitus  Europe
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Quote:
Originally posted by aceinc

The actual depth is 90 mm + 5mm when the bezel is taken into consideration. Addiditonally if the wood is continued it would shrink from 100mm to about 97mm where it meets the wall. Is 3-5 mm to close for proper cooling?

Paul
Three easy options

1. Lift the driver with additional material under chassis

2. Mount the driver as the top one, more space further up the line

3. Route away material where the magnet is located

Or combine 1. + 2.
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