10.Connect the AC power into an outlet that supplies at least six amps (750 watts) dedicated to each MA1250.

Caution: Never listen to sound that is distorted. If distorted sound is heard, turn the volume down immediately or speaker and/or amplifier damage could occur that is not covered by the warranty. If this problem persists, contact your dealer.

User adjustments and service: There are no user adjustments on the MA1250. Your installer may make certain gain level adjustments on the rear panel.

Caution: The MA1250 contains no user serviceable parts, so do not attempt to open or repair the MA1250. Refer servicing to a qualified technician only or contact the factory for information.

The trigger is 12 VDC (35mA per MA1250) via 3.5mm mono jack. 5 VDC trigger outputs will not work. To connect the trigger to a receiver use a 12 VDC power supply (we suggest Knoll PS1202 power supply with an adaptor). Plug the power supply into the switched outlet on the rear of the receiver. Connect the 12 volt wire to a 3.5mm mono jack. Plug the jack into the rear of the MA1250. 12 VDC polarity is not important. Make sure the amplifier power switch is off (out). When the receiver is switched on, the MR1250 amplifier is switched on.

 

 

Input

 

 

Input

 

 

Input

12 VDC

 

 

 

 

 

 

Trigger

 

 

1

2

 

 

3

4

 

 

5

6

Output

L

Output Output

 

Output Output

L

Output

 

Gain

 

 

Gain

Gain

L

Gain

Gain

 

 

Gain

 

R

 

 

 

 

 

 

 

R

 

 

 

 

1L 1R

 

 

2L 2R

3L 3R

R

4L 4R

5L 5R

 

 

6L 6R

 

 

 

 

 

 

 

 

MA1250

 

Link (out position)

 

120 VAC

cascades channel 1

 

 

8 Amps

to chanels 2-6

 

 

 

Caution: NEVER connect the MA1250 to impedances less than 4 ohms or amplifier damage not covered

by the warranty may occur.

The Link button is normally set to the in position to give all six stereo inputs individual sources. When the Link button is set to the

out position, that input Left/Right is linked or

cascaded to input #1 (without the use of Y cords). Any or all combination of linked inputs 2 to inputs 6 are possible. When all inputs are linked to input 1 the input impedance is about 4000 ohms.

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Knoll Systems MA1250 specifications
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MA1250 specifications

The Knoll Systems MA1250 is an advanced amplifier designed to deliver high-quality audio performance in a compact and efficient package. Known for its reliability and versatility, the MA1250 is an ideal choice for both professional audio applications and home audio systems.

One of the primary features of the MA1250 is its robust power output. With a power rating of 125 Watts per channel at 8 ohms, the amplifier can effortlessly drive a wide range of speakers, making it suitable for various audio setups. Its Class AB design blends efficiency with sound fidelity, providing audio clarity across different frequency ranges.

The MA1250 showcases sophisticated technology with its advanced heat sink design. This ensures optimal cooling even during extended periods of operation, allowing for consistent performance without overheating. The amplifier’s built-in protection circuitry safeguards against overloads and short circuits, prolonging the lifespan of both the unit and connected speakers.

In terms of connectivity, the MA1250 includes a variety of input options. Users can connect it to a range of audio sources, including digital and analog outputs, facilitating compatibility with different sound systems. The unit is equipped with RCA inputs, enabling seamless integration with traditional audio equipment, as well as speaker binding posts for secure connections.

The functionality of the MA1250 is further enhanced by its straightforward control panel, featuring volume adjustments and signal indicators. This user-friendly interface allows for easy operation, making it accessible for both seasoned audiophiles and casual listeners.

Another noteworthy characteristic of the Knoll Systems MA1250 is its compact design. Measuring only a fraction of the size of traditional amplifiers, it fits easily into smaller spaces or rack setups. This makes it a perfect solution for installations where space is a premium but high-quality audio is still essential.

Overall, the Knoll Systems MA1250 amplifier stands out due to its blend of power, efficiency, and user-centric design. With its ability to deliver audiophile-quality sound in a sleek package, it remains a popular choice among enthusiasts and professionals alike. Whether in a home theater setup or a professional studio, the MA1250 proves to be a reliable performer that meets diverse audio needs with exceptional quality.
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