Parasound 2125 4REAR PANEL CONNECTIONS AND CONTROLS, Input, Loop, Level, High Pass Filter, Stereo

4REAR PANEL CONNECTIONS AND CONTROLS

Connection Precautions

Disconnect the AC cord before making or changing any input, trigger, or speaker wire connections. Make sure there is no strain or tension on any wires that could cause them to pull loose.

CAUTION

WARNING

To Prevent Electric Shock, Do Not

Remove Cover. No User-Serviceable

To Prevent Fire Or Shock Hazard,

2125 Two Channel Amplifier

Parts Inside. Refer Servicing To

Do Not Expose This Unit To Rain

Parasound Products, Inc.

Qualified Service Personnel.

Or Moisture.

San Francisco, CA U S A

Input

Loop

Level

Speaker Pair A

Speaker Pair B

High Pass Filter

R

L

R

L

L

Load

AC

Auto Turn On

THX

Manual

Ground

Flat 20Hz

40Hz

Impedance

Voltage

Audio Sens 12V Trigger

In Loop

R

Stereo

Mono

Mono

Mono

Mono

Audio 12V

Max Min

Lift Norm

THX

Bridging

2-3

4-8

115V

230V

Ohms

Ohms

60Hz

50Hz

THX and Ultra2 are trademarks of THX Ltd. which may be registered in some jurisdictions. All right reserved.

Power Consumption: 550W

AC 115V/60Hz

AC 230V/50Hz

In Jacks

Connect the shielded audio cables from your preamplifier or system controller’s output jacks to the Model 2125’s L and R audio Input jacks. Use only the R channel jack for mono operation.

Loop Jacks

The jacks replicate the audio input signals to facilitate connections of other power amplifiers to the same preamplifier or system controller. Loop connection of multiple power amplifiers is called a “daisy chain.”

Note: You may loop the trigger connections of multiple Parasound power amplifiers without overloading the surround controller or preamplifier trigger outputs.

Input	Loop	Level			Spe
			High Pass Filter		R
	L
		THX	Flat 20Hz	40Hz
	R		Stereo	Mono
	Mono
		THX	Bridging

R (Right) and L (Left) Level Knobs

You can adjust the listening level for each channel by turning its Level knob clockwise to increase gain or counter-clockwise to reduce gain. The maximum settings correspond to THX Reference Level where the gain is 29: 1 volt at the input jacks corresponds to a 28.28 volts at the speaker terminals. THX recommends this setting whenever the 2125 is installed with other THX-certified components.

Note: You may wish to experiment with different gain settings on your preamp or a non-THX surround controller and on the Model 2125 to find a combination of gain settings where your system’s background noise is lowest. Sound professionals call these adjustments “gain staging.”

Note: Only the R channel Level knob is used for bridged mono operation.