845 SINGLE ENDED AMPLIFIERS
After 2 year of developing
300B Single Ended amplifiers with DEEP bass,
we have come to the conclusion that
it is IMPOSSIBLE to build
a 845 Single Ended amplifier with DEEP bass,
WITHOUT resorting to negative feedback,
WITHOUT losing the treble.
There will be a few people,
who wrongly claim that
their 845 Single Ended amplifiers have DEEP bass,
but when you talk to them, you realize that
they are using SMALL 6 inch woofers !
When we say DEEP bass, we mean 12 inch woofers, in a MASSIVE transmission
( Try one of the USD 25,000 MONSTER SIZED transmission lines from PMC ! )
Try reproducing a "Church Organ" using 845 Single Ended Amplifiers
( WITHOUT "negative feedback" )
before you tell us that 845 Single Ended Amplifiers has DEEP bass !
Try reproducing a "Church Organ" using our EL34 Push Pull Valve amplifier
and 12 inch woofer, in a MASSIVE transmission line,
and you will be shocked by what we mean by DEEP bass !
Unfortunately, 90% of Hi-Fi enthusiast are DEEP bass virgins !
90% of Hi-Fi enthusiast have never heard DEEP bass from
from a MODERN 12 inch or even 15 inch HIGH FIDELITY woofer,
because the most Hi-Fi shops only sell 5 inch or 6 inch woofer !
are designed for UPPER bass,
and do NOT have any DEEP bass.
Designing PA/Disco speakers for DEEP bass,
THAT MOST PEOPLE CAN IGNORE
The 845 valve has TWICE the output impedance of the 300B valves,
You can use negative feedback to flatten the frequency response curve,
Nothing in life is easy !
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