The Fourier, like all OTL tube amps, should only be used with autoformers. They are stressed when driving loads below 8 ohms. I have three Futterman amps. Autoformers let OTL amps see a constant higher-impedance load.
Fourier Amplifiers What Is The History and How Reliable
Happen to be considering a pair of Fourier Panthere amplifiers and am wondering what the history is on them. Supposedly these are some of the last production models and are more reliable than previous versions.
I have never been an OTL owner and would use them with a pair of JBL 4365 speakers. I know the earlier version of OTL amps such as the Futterman were not the most reliable of designs, and they tended to fail catastrophically. Or at least that is what I had heard of.
How reliable are the Fourier? I understand the company is out of production, how would one get them serviced?
I see they use a closed case and forced air fan, what are ventilation requirements?
Are they worth spending money on? Or is it more akin to own a vintage English roadster or Italian sportscar?
I have never been an OTL owner and would use them with a pair of JBL 4365 speakers. I know the earlier version of OTL amps such as the Futterman were not the most reliable of designs, and they tended to fail catastrophically. Or at least that is what I had heard of.
How reliable are the Fourier? I understand the company is out of production, how would one get them serviced?
I see they use a closed case and forced air fan, what are ventilation requirements?
Are they worth spending money on? Or is it more akin to own a vintage English roadster or Italian sportscar?