Apogee APL-10 Spécifications télécharger pdf (Page 15)

(2) Input and Output Connectors

The input and output connectors are wired as follows:

XLR Pin #

Function

Pin 1 Earth & Chassis Ground

Pin 2 Signal + DIFFERENTIAL INPUT

Pin 3 Signal - DIFFERENTIAL INPUT

Connector Case Earth & Chassis Ground

A positive signal applied to pin 2 of the XLR will result in a positive acoustic

pressure wave (excursion) appearing at the front of the drivers in the speak-

er system. Conversely, a positive signal appearing at pin 3 of the XLR will

result in a negative acoustic pressure wave (recursion) appearing at the front

of the speaker system’s drivers.

Overview

The internal amplification package consists of dual, fully-independent power

supplies and dual, fully-independent 500-watt RMS, 1600-watt peak, digital

amplifiers. One channel is utilized for the low frequency driver and the other

channel is used for the high frequency driver, hence the term "bi-amped."

These amplifiers and power supplies use numerous, proprietary design fea-

tures that result in extremely low distortion, high reliability, and a very low

heat by-product. No fans are used or needed, eliminating the risk of a

mechanical device becoming noisy during a quiet performance due to bear-

ing wear or contamination. The absence of fans also greatly simplifies main-

tenance, by eliminating the need to regularly check and clean air intake filters.

Unlike some competing designs, the amplifiers used in Apogee powered loud-

speakers are designed to drive normal 4- and 8-ohm loads. Due to an excep-

tionally high voltage swing, the Apogee design does not require unusually low

impedance drivers in order to develop full power. Very low impedance driv-

ers (1- or 2-ohm) have a low BL-product and typically exhibit poor damp-

ening and transient response, resulting in a loss of clarity.

Amplifiers

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Apogee APL-10 Spécifications Page 15