Kenwood L 07 C Owners Manual 2

Page 2

7 Electronic Technology and Audio
. Techniques

Recent amplifier design techniques have made remarkable progress
in line with the development of superior audio parts and elements.

Distortion and Signal to Noise (S/N) ratio ratings, considered
to be the basic criteria of amplifier performance. have shown impressive
measurement gains of one and even two digits in the past two or three
years. Dedicated sound engineers, however. have been looking beyond
such technical measurement data in their challenging work to uncover
audio techniques that may further improve what is actually heard
(aural sound).

This has focused attention on the dynamic characteristics of am-
plifiers, and is resulting in certain new concepts of theory, as well as new
audio products.

Here at Keriwood, we have attached great importance to aural
sound and we have maintained for years a group of sound engineers
who specialize in wide ranging R & D work, completely separate from
our design and engineering staff.

This separate task force first discovered the relation between the
dynamic characteristics of an amplifiers power supply and its reproduc-
ed sound, and advanced the epoch-making Dynamic Crosstalk theory
in the fall of 1975. Our introduction of the popular KA-73OO In-
tegrated Amplifier followed, with its independent left and right channel
power supplies for its power amplifier section which solved the problem
of Dynamic Crosstalk distortion. Its clear, powerful, distortion-free
sound, thanks to the dual power supply system, confirmed their theory
and caused much favorable comment in the audio world.

Another breakthrough was the Model 600 Integrated Amplifier
introduced in the spring of 1976 with its greatly improved characteristics
for phase distortion and transient response, and which featured DC
power amplifiers that significantly upgraded sound quality.

In this way we have been developing and adapting new techniques
in amplifier design. This is done only after very careful consideration,
and not merely because they are new. The decisive factor is always
whether the new technique will improve the basic function of an
amplifier as a part of an audio system.