[Amps] K3 Drive Levels and the SPE 1.3K-FA
John Simmons
jasimmons at pinewooddata.com
Sat Nov 16 13:55:50 EST 2019
Sounds like you have had some expensive learning experiences. The
easiest solution is to put a 2-3 dB pad between the output of the K3 and
the input of your amp. Look on eBay; you can find various combinations
of connectors and loss ratings. They are not expensive.
-de John NI0K
dgb wrote on 11/16/2019 12:46 PM:
> I run a lot of rtty and digital with my K3. I always set the amp to
> the mid range getting 8-900w out. It takes only 8-11 w drive from the
> K3 to accomplish that.
>
> Note: SPE recommends to run the amp in Mid Range for digital
> operation. When I first got the amp I made the mistake of running it
> in the high range and melted the copper heat sink, which was not
> considered a warranty repair, and was an expensive lesson learned.
>
> Over the course of the 3 yrs. that I've owned the amp, I have blown
> 4 LPA's in the K3 running it at 8-11w. With latest repair the tech
> informed me that the "LPA is not rated for continuous duty at upper
> power levels (like the digital Modes)" They suggested running 13w vs
> 11w so the LPA wouldn't be used. If I do that it over-drives the SPE
> in the mid-range.
>
> What is my suggested recourse?
>
> thanks 73 Dwight NS9I
>
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