bk pt3 User Manual

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WARNING: to prevent fire or shock hazard, do not expose this unit to rain or moisture. Care should be 
taken to prevent objects or liquid from entering the enclosure. Never handle the power cord with wet 
hands. 

 

•  The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user of the 

presence of uninsulated “dangerous voltage” within the product’s enclosure that may constitute a risk of 
electric shock to you. 

 

•  The exclamation point within an equilateral triangle is intended to alert the user of the presence of 

important operating and maintenance (servicing) instructions in the literature accompanying the unit. 

 

•  Caution: To prevent the risk of electric shock, do not remove cover. No user-serviceable parts inside. 

 
 

•  Unplug the Preamplifier Tuner from the AC outlet when plugging in or unplugging cables, when left 

unused for an extended period of time, when moving, or when you suspect lightning in your area. 

 

•  Prevent damage to the power cord. Do not bend, pull, place objects on, alter, etc. Replace the power cord 

if it becomes damaged. Always grasp the plug on the power cord when plugging in or unplugging the 
Preamplifier Tuner from the AC outlet. 

 
 

•  Your system may produce sound levels capable of causing permanent hearing loss. Do not operate for 

extended periods of time at high volume levels. 

 

•  Make sure the Preamplifier Tuner is placed on a level surface. 

 

•  The Preamplifier Tuner is equipped with raised feet to provide ventilation, reduce acoustic feedback, and 

provide protection against scratching the surface the unit is resting on. We advise against removing or 
altering feet. 

 

•  Do not stack anything on top of the Preamplifier Tuner (processor, source, etc.) Leave a minimum of 2” 

clearance from the top of the Preamplifier Tuner to the next shelf (or component) to insure proper 
ventilation. 

 

•  The Preamplifier Tuner should be located away from other sources that may be sensitive to heat. 

 

•  Do not perform any internal modifications to the Preamplifier Tuner. 

 

•  Always connect the Preamplifier Tuner’s power cord to an unswitched AC outlet for normal operation.  

 

•  If young children are present, adult supervision should be provided until the children are capable of 

following all rules for safe operation. 

 

•  Do not plug the Preamplifier Tuner’s power cord into an outlet with an unreasonable number of other 

devices. Be careful if using extension cords and ensure the total power used by all devices does not 
exceed the power rating (watts/amperes) of the extension cord. Excessive loads may cause the insulation 
on the cord to heat and possibly melt. 

 

•  Mistaking 

 or 

 connectors for audio/video inputs or outputs may 

damage your Preamplifier or other components. 

 

•  Damage may occur to your speakers when the power rating of the driver is exceeded while playing back 

music processed by the Preamplifier. Ensure that all the drivers in your system are capable of handling 
not only the average power being delivered by the power amplifiers, but also the peak power that is likely 
to be generated during strong passages.

If you are unsure of your speaker's power rating, contact the 

speaker manufacturer or the dealer where you purchased them. 

 

•  The Preamplifier Tuner should be serviced by qualified personnel when: 

A.  The Preamplifier Tuner is not functioning properly. 
B.  The Preamplifier Tuner was exposed to rain or other type of moisture. 
C.  The Preamplifier Tuner was dropped, or the chassis is damaged