APOGEE ACOUSTICS AMT-15 Handbuch für Installation und Gebrauch - Seite 4

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Powering the Loudspeaker

Amplifier Selection

It is important that the appropriate amplifier be used for a specific loudspeaker to avoid accidental driver damage.

Underpowered amplifiers will clip easily, sending a highly distorted signal to the speaker. This distorted signal has a

far greater density of energy than normal program and will "burn out" drivers quickly.

Note: Be certain that the total impedance of all interconnected speakers is not lower than the am-

plifier's minimum rated impedance. The AMT-12 and AMT-15 are 8-ohm speakers.

Wire Selection

Good quality speaker cable of the appropriate gauge is a worthwhile investment. Not all of the power generated by

your amplifier is delivered to your loudspeakers. Some power is lost as heat in the speaker cable. While this heat is

rarely enough to be a fire hazard, it can reduce a significant amount of amplifier power delivered to the loudspeak-

ers. In addition to loudspeakers not reaching their full potential loudness, undersized wire will also decrease the

woofers' ability to respond accurately to transients, leaving the bass response loose and inarticulate.

The appropriate wire size depends on the distance between the amplifier and the speaker and the final combined

impedance of the speaker or speakers at the end of the cable run. Here is a list of recommended wire gauges:

Distance from Amp to

AMT Speaker

50 Feet

100 Feet

200 Feet

400 Feet

Input Panel

The AMT-12 and AMT-15 use Speakon-type connectors. Each AMT speaker has two parallel connectors, one can be

used for the input and the other for a loop-thru connection to another speaker if desired.

AMT-12 Panel

8 Ohms

(1 Speaker)

16 AWG

14 AWG

12 AWG

10 AWG

AMT-15 Panel

4 Ohms

(2 Speakers)

16 AWG

12 AWG

10 AWG

8 AWG