Finished desktop tl (henkjan/juoiga) alpair 5 - Page 2 - diyAudio
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Old 8th April 2010, 02:36 PM   #11
Henkjan is offline Henkjan  Netherlands
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in theory lenght can be shortened by increasing the taper, but since it is already a strong taper I doubt if you'd gain much.

I was thinking more of a fold like this:
Click the image to open in full size.

you could "play around" with MJK's allignment tables to see if you can make it fit somehow TL alignment tables in excel, maybe with a bit higher tune of the line you can make it fit.
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Old 8th April 2010, 11:57 PM   #12
_henry_ is offline _henry_  Australia
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Henkjan,
that is interesting.

i do not have Martin's mathcad worksheet yet, i think he limits to give the worksheet (potentially commercial use?).

i saw the whitepaper, didnt understand much of this yet , need to get back to u on that

regards
henry
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Old 20th December 2010, 12:48 AM   #13
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Might have got this wrong, but isnt the Alpair 5 spiderless? I'm just wondering how it works in a TL.
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Old 20th December 2010, 09:38 PM   #14
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Quote:
Originally Posted by _henry_ View Post
well, its kind a embarrassing, no finish, just plain plywood and the alpair 5 not yet recessed mounted

but it still great sounding little beast
My speakers are plain particle board. Looks like sh*t but sounds very well
I think you should post a picture of them
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Old 27th December 2010, 08:41 PM   #15
Henkjan is offline Henkjan  Netherlands
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Quote:
Originally Posted by Bill poster View Post
Might have got this wrong, but isnt the Alpair 5 spiderless? I'm just wondering how it works in a TL.
just use the volume knob with care...
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Old 29th December 2010, 03:20 PM   #16
hassome is offline hassome  Germany
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Default No DC please

Quote:
just use the volume knob with care...
.. and don't act as silly as I did. While I was evaluating my preamp ( DIYHiFi.org • View topic - Preamp for BSC and fs notch filtering ) for these speakers, I wanted to know how it sounds on a NAD 306. I had bad luck and ripped off one power supply rail of my breadboard. The resulting DC offset went directly into a power amp fed by +- 70 volts... ... a little bit too much for the poor alpairs.. how long half a second can last...
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Old 29th December 2010, 04:07 PM   #17
_henry_ is offline _henry_  Australia
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well, i've used it for quite some time, and sometimes when my DAC didnt lock the signal properly will create full blown noise, and several excessive plop.

they survive all of the above

i guess they are quite resillient.

cheers
henry
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Old 29th December 2010, 05:33 PM   #18
hassome is offline hassome  Germany
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but mine did not pass this unfair stress test. While the right one still seems quite happy, the other suffered heavily. Voice coil is still alive, but the cone now rests in a position that allows you to get an idea of xmax as well as of the polarity of the evil DC bump. Music is reproduced with 9db loss.

Interestingly I can still use it at very low volumes enjoying its typical sound, but anything louder than a heavy mouse click will cause distortions...
A new pair has been ordered. I never believed that DIY is cost effective
Of course I will put the NAD. Only my low power tube amp will be allowed to feed them...
Cheers,
hassan
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Old 18th May 2014, 09:40 PM   #19
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Does anyone have the article or a link to it? I'm referring to the desktop tl....
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