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power supply components during power-up, and switches off-line once the
power supply has been charged.
Home THX Audio
System certification
Lucasfilm, Ltd.
®
has established minimum standards for the performance of vari-
ous components which may be used in their Home THX
®
Audio System. With
respect to power amplifiers, the standards address such things as:
• a low electrical noise floor to allow low-level information to be
fully appreciated;
• the absence of any mechanical noise (fan noise, transformer wind-
ing buzzes), for the same reason;
• adequate power to meet the demands of modern films (which can
be quite dynamic);
• flat frequency response for accurate reproduction of timbre;
• stability into relatively extreme loudspeaker loads, to ensure that
the amplifier will perform well with a wide range of loudspeakers.
As you can see from this list, there is nothing about the Home THX amplifier
specification that is particularly radical. It simply ensures a certain minimum stan-
dard of performance. In particular, there is nothing in the nature of the amplifier
specification which prevents anyone from going above and beyond the minimum
performance levels required by THX certification.
Your Proceed amplifier is certified for use in Home THX audio systems. Madrigal
engineers have created this powerful, versatile and extraordinarily musical power
amplifier, using the technology and design methodology for which they have be-
come so well known. Equally suited to the rigors of film soundtracks and the fi-
nesse of high end music reproduction, the Proceed Five Channel Amplifier serves
both needs quite well. In today’s growing market for multipurpose systems, it
represents an extraordinary value.