On 27/02/2015 5:09 PM, Phil Allison wrote:
Trevor Wilson wrote:
Phil Allison wrote:

Anyway, I fitted some Polyswitches to both tweeters. Just in case.


** I hope you know to fit those Polyswitches in series with the high
pass filter and not the coils of the tweeters.

OTHERWISE, if the device ever trips, the HPF becomes a series tuned
circuit and shorts the amplifier at or near the x-over frequency.


**Thanks for the tip. And yes, I always fit them ahead of the HPF.


** So you saw my letter on the topic in Silicon Chip, back in the 1980s ??

**Very possibly.


BTW One tiny Polyswitch sure is *cheap insurance* for such an expensive driver.


****** yeah. The distributor reckons that the real price was more than a
grand. Still, the thing sounds remarkably good for a moving coil speaker
system. The cabinet is very well damped, with lots of bracing and driver
integration is very well implemented.


--
Trevor Wilson
www.rageaudio.com.au

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