Knoll 6K Manual De Usuario

In most cases, one of the following suggestions should help you 

solve a hum noise in your system. Please try these steps in the 
order shown, proceeding from one step to the next if the prior 

suggestion does not eliminate the problem. 

1) Read these instructions. 
2) Keep these instructions. 
3) Read all warnings. 
4) Follow all instructions. 
5) Do not use this apparatus near water. 

 

6) Clean only with dry cloth. 

7) Do not block any ventilation openings. Install in accordance with the manufacturer’s 
instructions. 

To determine if a cable TV connection is responsible for the hum, first 

turn off all the components. Disconnect the cable TV feed to your 

system at the first place where it connects to your components. 
Alternatively, disconnect the cable TV wire where it is connected at the 

wall outlet. Turn your system back on, and listen if the hum has 

disappeared. If removing the cable TV feed has eliminated the hum, 
you will need to insert a Ground Loop Isolator (Knoll model GB634) 

before reconnecting the cable TV feed, or contact your cable TV 

operator to see if they can better isolate your cable feed. 

8) Do not install near any heat sources such as radiators, heat registers, stoves, or 
other apparatus (including amplifiers) that produce heat. 
9) Do not defeat the safety purpose of the polarized or grounding-type plug. A 
polarized plug has two blades with one wider than the other. A grounding type plug has 
two blades and a third grounding prong. The wide blade or the third prongs are 
provided for your safety. If the provided plug does not fit into your outlet, consult an 
electrician for replacement of the obsolete outlet. 
10) Protect the power cord from being walked on or pinched particularly at plugs, 
convenience receptacles, and the point where they exit from the apparatus. 

 

11) Only use attachments/accessories specified by the manufacturer. 

12) Use only with the cart, stand, tripod, bracket, or table specified by the 
manufacturer, or sold with the apparatus. When a cart is used, use caution when 
moving the cart/apparatus combination to avoid injury from tip-over. 

13) Unplug this apparatus during lightning storms or when unused for long periods of 
time. 
14) Refer all servicing to qualified service personnel. Servicing is required when the 
apparatus has been damaged in any way, such as power-supply cord or plug is 
damaged, liquid has been spilled or objects have fallen into the apparatus, the 
apparatus has been exposed to rain or moisture, does not operate normally, or has 
been dropped. 
15).Under no circumstances should the output terminals of the amplifier be short-
circuited. 

 
Suggestion #3 

16).Be sure that the loudspeakers connected can handle the output power of the 
amplifier at the loudspeakers rated impedance. The warranty on the amplifier does not 
cover damage to loudspeakers that have inadequate power handling capabilities. 

Poor grounding of the electrical system in your home may also cause 

ground loop problems, particularly when there are multiple components 

with three prong, grounded, power cords. Unplug these components 
one at a time, and see if one or all of them is causing the problem. The 

ultimate solution to this type of problem is to rewire your house with an 

isolated, star type-grounding configuration. Knoll understands that this 

may be impractical and expensive. In some instances, the use of an 
approved AC Power Isolation Transformer (Knoll model PLB200) of 

sufficient capacity may solve this problem. 

17) Where an all-pole MAINS SWITCH is used as the disconnect device, the location 
on the apparatus and the function of the switch shall be described, and the switch shall 
remain readily operable; 
18) A push button is used to turn the power off and on. 
19) A LED is used to show when the apparatus is powered on. 

 

CAUTION: These servicing instructions are for use by qualified service personnel only. 
To reduce the risk of electric shock do not perform any servicing other than that 
contained in the operating instructions unless you are qualified to do so. 

 

 
 

 
WARNING: This product contains chemicals, including lead, known to the 
State of California to cause birth defects or other reproductive harm. 
Wash hands after handling.