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LINN keilidh Tweeter Upgrade

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Rob Cox

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May 10, 1997, 3:00:00 AM5/10/97
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Can anyone who has upgraded their keilidh's with new tweeter let me
know how they sound? I have an all LINN active system. Thanks

--

Rontoolsie

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May 13, 1997, 3:00:00 AM5/13/97
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>>Can anyone who has upgraded their keilidh's with new tweeter let me
know how they sound? I have an all LINN active system. Thanks<<

There is an easy and inexpensive way of doing so. I have passed this
recommendation to folks with Kabers, Keilidhs and done it myself on a
pair of Tukans.

Get a mousepad. Make circular cut-outs that are the the diameter of
the tweeters and have the surrounding mouspad cut circular to the size
of the front plate of the tweeter baffle. These cuts should be
bevelled outwards (i.e. not made perpendicular to the plane of the
mousepad, but at about 45 degrees into it), so when you look at them
face on, the hole appears to slightly flare outwards in the direction
from the tweeter to the listener.

This does at least two different things....

1. it prevents reflections from bouncing off (out of phase no less)
the metal tweeter baffle. This alone allows considerable better
imaging becuase of less destructive inteference.

2. It minimises the effects of diffraction by sundry corners of the
cabinet.

The three of us who have done it each report very similiar
findings. There is a loss of 'hash' and 'grain' in the sound, allowing
a whole new wealth of underlying detail to shine through. Wonderful.

Soundstaging becomes rather impressive.

The overall spectral balance is smoother, but paradoxically not any
less detailed (see above).

The down side is that the sweet spot narrows slightly- but hey...no
free lunches here.

You can affix the mouspad cutoff to the tweeter baffle with silicone
sealant, but for the intitial trials try double sided sticky tape. If
the original sound is too dark, you will have to remove them and
*very* sligthly increase the diameter of the cut-out.

This can be done for a cost of (maybe) $2 with 15-20 minutes of
labour. The results can be the equivalent of a 500$ upgrade. I am not
jesting. Try it... you will LOVE it.

Regards,

Ron Toolsie

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