Hello fellow ’Goners,
For the past eighteen months and until last week, I had been running a pair of Golden Lion KT88’s in my Dennis Had Inspire Firebottle KT88 SEP. Over the months of reading various sources on tubes, I discovered many kind reviews of the GL KT77 and so I bought a pair a few weeks ago. Installed about seven days ago, I was immediately impressed with the KT77’s enhanced bass, both more full and more nuanced, not to mention the improvement in instrument separation throughout the sound field. Soundstage is also more palpable and some instrument sounds have finally found their "place," if that makes sense.
So, moments ago, I decided to review the spec sheet for the recommended tubes, provided by Mr. Had. Therein I discovered Dennis has sorted his recommended tubes into 8ohm and 4ohm categories. The KT88 is recommended for 4 ohm speakers. I have Tekton Moabs, running at 4ohms, so the KT88 is a good fit. I also noted that the KT77’s are listed in the category for 8ohm speakers. Wow. Not good? I’m not sure. Is this simply a recommendation or are there technical limitations that I’m running through that will damage amplifier, preamplifier (by referential impacts?), or speaker parts in the near or long term?
I’m not sure if I can post a link here, but there is a datasheet download available for the Golden Lion KT77 at the tube store dot com. I will see if I can post the link herein, but I figured one of your techies might have some useful comments and insights into this matter of concern. https://www.thetubestore.com/lib/thetubestore/genalex-kt77.pdf
Thanks for your time.