TAD M700 Mode D'emploi page 6

INTRODUCTION
Inspiring the joy of listening
Technical Audio Devices Laboratories, Inc. (TADL) grew from the spirit to discover technologies to perfectly recreate
the pure sound of live performances with uncompromising craftsmanship. We have inherited our philosophy from Bart
Locanthi—recognized across the globe as the ultimate sound technologist—who believed that genuine technology is
true to the basics and that genuine technology places greater importance on sound quality than on technology for its
own sake.
At TADL, we are honing our technology to create equipment that reproduces musical sounds that evoke both the energy
and impact of live music.
Features
Symmetry: Duallogic-Circuit Technology
The path of positive and negative current flowing through the voice coil must be completely symmetrical to accurately
drive the loudspeaker diaphragm.
Symmetry was of a particular concern for this product, with a complete balance pursued in amplifier circuit, power
source circuit and structural aspects.
Vibration control: Vibration-Absorber Technology
A new aluminum cast chassis that features a high degree of both high internal loss and low impedance was developed.
The arrangement of parts and components installed inside the chassis was reviewed and further optimized. Furthermore,
unwanted vibration is controlled and sound quality has been improved through the use of newly structured, adjustable
point support spikes.
Low center of gravity: Lower Weight-Balanced Frame
The cast aluminum chassis with more gradually rounded curves than the current model allows a stable foundation of the
component.
In addition, a wide-tread chassis structure with chassis stands arranged on the outside of the product was adopted to
lower the symmetrical center of gravity.
Rated output: Driving power of 700 W/4  (M700); 350 W + 350 W/4  (M700S)
The electrical amplifier circuit is connected to a balance amplifier via multi-emitter transistors with a superior upper
range to achieve high power output with plenty of headroom.
High capacity power supplies
There are two extra-large hand-made power source transformers that feature in total a capacity of 2800 VA. This is also a
high capacity power supply that is comprised of newly developed highcapacity smoothing capacitors (33000 uF x 4 units).
The speaker is driven with a high degree of fidelity, even with a high output.
Voltage amplifying circuit
The number of input circuit elements was significantly reduced by adopting a matched pair of FET input circuits, based
on a proprietary technology philosophy at TAD.
Signal amplification with a high degree of purity was made possible with a simple and clean structure for the first stage,
which then creates a powerful speaker drive.
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