Infinite X
Page 8
Reference Manual
Notes
Bridge Mode
Parallel Mode
Stereo Mode
VSP Velocity Sense Protection (limit)
To bridge channel 1 and 2 connect to input 1 only and use CH1 speakon output (pins
1+, 2+). To bridge channel 3 and 4 connect to input 3 only and use CH3 speakon output
(pins 1+, 2+). Pin 1+ will be signal positive (+) on output 1 and 3 in bridge mode.
Use channel 1's filter when bridging channels 1 and 2 and channel 3's filter when
bridging channels 3 and 4. Channel 2's filter is not operational when channel 1 and 2 are
bridged and channel 4's filter is not operational when channel 3 and 4 are bridged.
The minimum impedance in bridge mode must be 4 ohms for the Infinite QX 4 and QX 5
and 8 ohms for Infinite QX 6.
When input 1 and 2's mode switch is set to parallel, input 1 is linked to input 2. Connect
to input 1 or input 2 and the same signal will output from both CH1 and CH2 outputs.
Each channels level is set with its own front panel level control.
When input 3 and 4's mode switch is set to parallel, input 3 is linked to input 4. Connect
to input 3 or input 4 and the same signal will output from both CH3 and CH4 outputs.
Each channels level is set with its own front panel level control.
Note that parallel operation on Infinite X amplifiers is not like the parallel mode on some
amplifiers that allow you to drive into very low impedances. Parallel mode on Infinite X
series amplifiers makes a pair of inputs receive the same signal.
When input 1 and 2's mode switch is set to stereo, input 1 and 2 are not linked and
operate independently. When input 3 and 4's mode switch is set to stereo, input 3 and 4
are not linked and operate independently.
All Infinite X amplifiers are equipped with velocity sensing protection.
The VSP circuit monitors back EMF and will attenuate the output for a very brief period if
the amplifier detects over excursion or potential damage to a speaker.
If very severe overload conditions are detected and speaker failure is imminent, the
amplifier will mute its output for a brief period. Reducing the amplifiers output level will
stop the protection circuit from muting the output in this situation.
Please note that the VSP circuit can only assist with protecting your speakers.
It in no way guarantees complete protection against any component failure and safe
working practices should always be followed with regard to matching amplifier output
levels to speaker input ratings.
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