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SI1x6 
SI1x6m

    

Six room speaker-stereo interface  
Installation instructions 

 

Warning

: To be installed and/or used in accordance with 

appropriate local electrical codes and regulations. 
 

Description: 

The Knöll SI1x6 and SI1x6m six-channel 

speaker-stereo interfaces can safely power two to six rooms 
of stereo speakers from one stereo amplifier or receiver. 
Speakers can be similar or dissimilar and each will sound their 
best. These stereo interfaces can be used with and without 
stereo room volume controls. Parallel or series speaker wiring 
is acceptable. Maximum power input is 200 watts per channel. 
The SI1x6 and SI1x6m feature an incredible "ultra" music 
quality frequency response of DC to 500,000 Hz +/-0.1dB at 
all power levels up to 350 watts due to its transformer-free

 

topology. 
 
The 

SI1x6m is identical to the SI1x6

 with six added on-off 

switches so speakers in various rooms can be individually 
turned on and off as desired from the SI1x6m location. 
 
The 

WIN600

 is an in-wall version of the SI1x6.   

 
Depending on the quantity and type of speakers chosen, the 
SI1x6 may offer the amplifier impedance as low as 4 ohms,  
so we suggest that your amplifier (or receiver) be rated for  
4-ohm (or lower) operation. The SI1x6 or SI1x6m is usually 
stacked with the stereo equipment and does not need a power 
supply. 

 

 
 
 
 
 
 
Basic System Layout and Pre-Wiring

: The SI1x6 or SI1x6m 

is usually stacked with the stereo equipment. It may get warm 
or a bit hot, so it needs ventilation for maximum power and 
longest life. Don’t cover or block the vent holes. Take care to 
mount it away from anything that can be damaged by heat. 
 
From each speaker run a 

fire rated

 two-conductor speaker 

wire, ideally 16 gauge or larger for runs up to 33’ (10m) and 14 
gauge or larger for longer runs to the SI1x6 or SI1x6m stereo 
interface (or volume control then to the interface). To save 
time and money, many installers run a four-conductor speaker 
wire from the volume control to the stereo interface. If there 
is more than one pair of speakers connected to a single SI1x6 
room connection, wire the speakers in series or parallel 
whichever makes the impedance closest to 4 or 8 ohms. 
 
 
 
 

      Do not attempt

 to make the final combined  

         speaker impedance less than 4 ohms.  
 

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