PROCEED AMP 5 Specifications download pdf (Page 17)

Bridged Operation

Your Proceed amplifier has been designed to be extremely versatile. Should

your needs change or grow over time, you may wish to add additional power

by one of two means: Bridging, or Biamping. We will discuss bridged opera-

tion first.

Bridging Explained Bridging refers to the act of reconfiguring the circuitry in both the left and

right channels of your amplifier to act as though it were a single, much larger

amplifier. (Of course, you will need a second bridged amplifier for stereo;

more for multichannel sound, as in home theater applications.)

Bridging is accomplished by sending a normal signal to one channel and an

inverted signal to the other. In this configuration, one channel will always be

“pushing” when the other is “pulling.” By connecting the loudspeaker leads

across the left and right red output terminals, the amplifier can now deliver

twice the normal voltage to the loudspeaker. Working together this way, the

two amplifier channels can deliver almost four times the power to a speaker

that a single channel could deliver on its own.

Bridged operation is particularly beneficial with low sensitivity, high-imped-

ance loudspeakers (8Ω or higher) that have a greater need for voltage than for

current. It is not recommended for low-impedance loudspeakers, as the

speaker’s impedance is “split” by the two halves of the amplifier. Thus the

bridged amplifier “sees” a 2Ω load when connected to a 4Ω loudspeaker. De-

livery of high power into such a low impedance creates a great deal of heat

that needs to be dissipated. (Of course, your amplifier is protected against

overheating, but having an amplifier shut itself down even temporarily can put

a damper on the evening’s entertainment.)

Balanced Bridging If your preamplifier has balanced outputs, you should use them. For this dis-

cussion, we will assume that you are using a Madrigal Balanced Bridging Kit

for each channel to be bridged. (Alternatively, you may have custom cables

built using your preferred wire and connectors, being careful to follow the

wiring diagram below.)

Balanced Bridging Kit

Female XLR Input

Pin 1: signal ground

Pin 2: signal + (non-inverting)

Pin 3: signal – (inverting)

Male XLR Output (normal)

Pin 1: signal ground

Pin 2: signal + (non-inverting)

Pin 3: signal – (inverting)

Male XLR Output (inverted)

Pin 1: not used (floated)

Pin 2: signal – (inverting)

Pin 3: signal + (non-inverting)

Balanced Bridging

Input Adapter

(pin configuration)

Bridging Output Adapter

(not drawn to scale)

(shield not connected)

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 29 30

Comments to this Manuals

No comments

PROCEED AMP 5 Specifications Page 17

Comments to this Manuals

Related products and manuals for Audio amplifiers PROCEED AMP 5