16
16
16
16
16
16
16
16
AMPLIFIER WITH DUAL 4 OUTPUTS
4 SPEAKERS PER CHANNEL CONNECTED IN PARALLEL
Example of Low-Impedance System Configuration
+
_
+
_
To next speaker
From amp
Jumper has been removed
Note:
Jumper stored for safekeeping
Total load impedance can be calculated this way:
Rs is the impedance of the speaker, for the A12 it is equal to 16 ohms.
Note: If all speakers are the same Rs , it is simply:
Low-impedance amplifiers have power ratings based on driving a particular load
impedance, typically a 4-ohm load. Some rate power into an 8-ohm load. If the
speaker loadʼs impedance is greater than the amplifierʼs rated impedance, the
speaker will not consume the amplifierʼs total rated power. Since the A12 is a
16-ohm speaker, operating a single A12 with an amplifier rated for 4 ohms will
result in the A12 speaker consuming only 1/4 of the amplifierʼs maximum capacity.
Likewise a single A12 will consume only 1/2 of the power capacity of an amplifierʼs
8-ohm power rating. Most real world applications will require more than a single
A12, and paralleling the speakers will decrease the total impedance of the load as
mentioned above.
(1/Rs + 1/Rs ... 1/Rs)
1
= Total Load Impedance
# of Speakers
Rs
= Total Load Impedance
6
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Summary of Contents for A12
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