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RE: Classe DR9 shuts down in bridged mode - ???

139.68.134.1

In Reply to: RE: Classe DR9 shuts down in bridged mode - ??? posted by marknoir on October 05, 2007 at 11:13:33

Also consider amplifier output protection. Amps with simple
power supply rail fusing are best for bridging. Amps that rely
on output current limiting circuits to limit output current
are likely to activate prematurely in bridge mode, and virtually
every current limit circuit adds significant distortion when it
kicks in. Remember bridging makes an 8 ohm load look like 4 ohms,
a 4 ohm load look like 2 ohms, etc. Also, real speakers do not
look like ideal resistors to amps. They have peaks and dips in
impedance with frequency, and the dips can drop below 1/2 the
nominal impedance. They also have wildly varying phase with
frequency.

From this site:

http://www.faqs.org/faqs/AudioFAQ/part4/ (Open in New Window)

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