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channel as soon as its parameter returns to the safe 

operating area.  

• 

2-16 ohms stable. Goes with almost any speaker.  

• 

Shipped with 

PS1318

 in countries with 120 volt 60 Hz 

power supply.  

 

Installation 

The Illusion amplifier does not have to be near the stereo equipment 
but long line level audio runs are not recommended. It is better to 

have long speaker wire runs rather than source audio wire runs. If 
long line level audio runs are required, we suggest using the Knoll UTP 

stereo balun balancing system to avoid electro magnetic interference. 

Avoid installing the Illusion amplifier in high heat or humidity areas. 
Connect the stereo source to the Illusion gold RCA jacks labeled INPUT 

using good quality short as possible RCA jack wires. 

 
Connect the speakers to the Illusion using good quality 18-12 gauge 

wires. If the wires are mounted inside a wall, fire rated wire may be 

required. Speaker polarity is important. Wrong polarity or out of phase 
speaker wiring will make the bass response of the speakers poor. 

Carefully check that the + of speakers are connected to the + of the 

Illusion terminals. 

 
Connect the PS1318 power supply to the Illusion jack labeled 

“13VDC”. If the stereo source has a switched outlet we suggest 

plugging the PS1318 power supply into the switched outlet. 
 

Plug the power supply or supplies into the wall. After the system 

powers up and the source is on and running, adjust the volume/gain 
and on the Illusion 2 adjust the balance, bass and treble as needed.   

 

Operation 

Turn the source on and confirm it is operating.  
 

Turn the Illusion on by plugging in the power supply or switching the 

power supply on and switching the power switch on the Illusion front 
face on.  When the power in on the Illusion amplifiers blue LED will be 

on. 

 
Use the Illusion volume to turn the volume up to the desired level.  

 

Adjust the Illusion 2 bass, treble and balance as desired. 

 

Note:

 The illusion amp may be hot to the touch after operating for 

some time. This is normal. 

 

Knoll Systems service information

 

The Illusion amplifier does not contain any user serviceable parts inside. If 
you suspect a problem that may require servicing, contact us at 

www.knollsystems.com/contact.html

, or by phone at 800 566-5579. 

 

 
Troubleshooting 

If a problem is encountered with the Illusion amp, the most 
expedient procedure is to locate the problem and if possible 

repair it before requesting service. Be sure to carefully check 
other system components such as controllers, CD players, 
volume controls, wiring, speakers, etc. that may be at fault.

 

 
Problem   Action

 

Power LED does  

1. Check that the amp power supply is 

not light - no sound       plugged in.  

 

 

 

2. Test the AC outlet with a lamp. 

 

 

 

3. Check Illusion power button on (in). 

 
Sound cuts out 

1. Verify speaker impedance is 2-16 

ohms.   

 

    Changing speakers may be required. 

 

 

 

2. Check if the Illusion feels hot. If it's 

 

 

               hot increase cooling. 

 
Sound is distorted 

1. Turn the volume down. 

 

 

 

2. Check speakers for damage. 

 

 

 

3. Check inputs for proper levels. 

 

 

 

    Illusion gain and source output level 

  

 

 

    may have to be adjusted. 

 

 

 

4. Speakers may be less than 4 ohms. 

 
Speaker pops when  1. Speaker may need resistor placed 

amp turned on or off     across terminal. Suggest 2k0 1/4 w. 

 

 

 

      

Discharges speaker internal cap. 

 

 

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