polarity before securing each wire. If inserting larger gauge wire presents a problem, tinning the wire with solder may help. Be sure the connection is tight. The connector may be plugged into the amplifier. (Refer to Figure C)
Bridging
All Art Series amplifiers are capable of being bridged into a mono output due to the internal design of the amplifier. This feature permits the creation of a mono channel for a subwoofer or center channel. Also, bridging adds flexibility of operation. Any of the Art Series
Deriving the mono channel is accomplished by using the left channel positive wire as the positive speaker wire and the right channel negative wire as the negative speaker wire. It is important that a minimum 4 Ohm impedance is observed. If the impedance drops below 4 Ohms while the amplifier is wired in the mono configuration, the AM H protection circuit will engage.
Speaker Connector
Speaker Negative
Speaker Positive
Remote
Speaker Positive
Speaker Negative
Figure C: Speaker / Remote
The ability to run stereo satellites while simultaneously running a mono output from the same output stage is accomplished simply by running the stereo speakers normally and tapping into the appropriate wires for the "Mixed Mono" channel (left channel positive wire as the positive speaker wire and the right channel negative wire as the negative speaker wire). Again, speaker impedance should be 2 Ohms on the stereo channels and 4 Ohms on the mono channel.
Inputs
On the left side panel of the two channel Art Series amplifiers are a set of RCA jacks. A DIN jack is paralleled to the RCA input and can be used to Phantom Power other PPI accessories, such as our crossovers and equalizers. The paralleling of these inputs allow the
Gain Control
On the left end panel, next to the inputs, is the gain control. This control adjusts the level of the input signal of your source unit. This control requires a small flat blade screwdriver for adjustment. Upon installation of the amplifier, the gain control must be adjusted. This can be done by first turning the gain all the way down (counter clockwise). Turn the volume on the source unit up two thirds. Then adjust the gain control until the desired volume is obtained without audible distortion.
Low Impedance Indicator
AM II circuitry will lower output power to maintain uninterrupted operation whenever the amplifier senses an impedance load of less than 2 Ohms. The Low Impedance Indicator
In the case of a short circuit, AM II will engage to protect the shorted channel but will continue to play the unaffected channel. When this occurs, audible distortion will be heard.
System Tuning
In order to achieve maximum
Adjusting Equalizer Input Gains:
1.Turn the equalizer's volume control to minimum.
2.Turn the source unit volume 1/2 to 3/4 of maximum. If available on your unit, set the output level to maximum. Some units may have a switch.
3.If available, set selector switch to either input 1 or input 2.
4.Adjust all equalizer input gains to minimum.
5.For the chosen input play the respective music source. A loud music passage is desired.
6.For the chosen input, increase the left input gain control until the onset of audible distortion. Then decrease the gain prior to the immediate point of audible distortion. This setting will minimize system background noise and prevents overloading of the equalizer. Adjust, for the same input, the right input gain control for proper left / right balance.
7.Set selector switch to the alternative source unit, if used, and repeat steps 5 and 6.
8.Adjust crossover next.
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