Interestingly, my Beveridge amplifiers are signed inside by the initials "RM", using magic marker, and dated 1979. Or maybe only one of them is. RM worked with Harold Beveridge back then. I knew that RM had an all-tube mod for my amps (which have a solid state input stage), but I did not know that he is making a complete direct-drive speaker system.
I built my TL cabinets more than 45 years ago, using the famous article by Bailey, published in Wireless World, as a guide. I was also copying the IMF Monitor speaker, which I had heard many times at Lyric Hi-Fi on Lexington Ave in NYC. To me, the Monitor had the lowest distortion and most extended bass of any speaker available at that time. And of course, I could not possibly afford them, because they cost something like a THOUSAND DOLLARS!!! (Can you imagine?) So I bought the IMF Studios from Lyric and soon realized I wanted more. In construction, I used 1.25-inch MDF with a formica covering. Thus each cabinet weighs near to 100 lbs. I was a medical intern at that time. So my schedule was stay up all night one night in the hospital, sleep the next night, work on the speakers the night after that, then stay up all night in the hospital, etc.
Audiofun, I don't know that I have the ART7 set up "perfectly", but for now I will give it more time. Not a bad idea about playing with VTA, but keep in mind, I am not talking about tonal balance, which in my experiece is most affected by VTA. I am talking about an over all quality.
I built my TL cabinets more than 45 years ago, using the famous article by Bailey, published in Wireless World, as a guide. I was also copying the IMF Monitor speaker, which I had heard many times at Lyric Hi-Fi on Lexington Ave in NYC. To me, the Monitor had the lowest distortion and most extended bass of any speaker available at that time. And of course, I could not possibly afford them, because they cost something like a THOUSAND DOLLARS!!! (Can you imagine?) So I bought the IMF Studios from Lyric and soon realized I wanted more. In construction, I used 1.25-inch MDF with a formica covering. Thus each cabinet weighs near to 100 lbs. I was a medical intern at that time. So my schedule was stay up all night one night in the hospital, sleep the next night, work on the speakers the night after that, then stay up all night in the hospital, etc.
Audiofun, I don't know that I have the ART7 set up "perfectly", but for now I will give it more time. Not a bad idea about playing with VTA, but keep in mind, I am not talking about tonal balance, which in my experiece is most affected by VTA. I am talking about an over all quality.