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- ST260
- Owner's Manual
B&K ST260 Owner's Manual
Summary of ST260
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St260 two channel amplifier owner’s manual b & k components ltd. 12997 rev 050500
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B&k components, ltd., 2100 old union road, buffalo, new york 14227.
Page 3: Table of Contents
Page 1 table of contents safety precautions page 2 purpose and function page 3 design and construction page 3 features page 4 rear panel view page 4 rear panel description page 5 control muting page 5 - 6 level controls page 6 inputs page 7 outputs page 8 internal bus page 9 jumper description page ...
Page 4: Safety Precautions
Page 2 safety precautions please read before installing warning: to prevent fire or shock hazard, do not expose this unit to rain or moisture. The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user of the presence of uninsulated “dangerous voltage” within t...
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Page 3 the st260's purpose and function the st260 is a compact, very efficient, two channel power amplifier. It is designed to be used in all types of audio or audio/video systems. The term versatile is almost adequate to describe the variance of operational modes the st260 is capable of providing. ...
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Page 4 )ljxuh$ features toroidal transformer - efficient high current transformer for improved dynamics. Discrete circuitry - more accurate and three dimensional reproduction of source material. Limited protection - provides short term protection from accidental shorting of output devices and protec...
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Page 5 rear panel description 1. Ac fuse holder - holds the ac line fuse. This fuse is an 8 amp / 250 volt slow blow fuse. Replace with same type and value fuse only. 2. Ac input receptacle - for attaching the supplied ac power cord to the amplifier. 3. Speaker outputs - for connecting the speakers ...
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Page 6 )ljxuh% if the control function is desired, each unit in the system must remain connected at all times and the control must be enabled. To enable the control function, the ctrl enable button must be out for each controllable amplifier in the system. For more information on the amplifiers outp...
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Page 7 )ljxuh& )ljxuh' example: when using 4 ohm and 8 ohm speakers together, the 4 ohm may sound louder then 8 ohm at a given volume level. The level controls on the amplifier are used to match the speakers volume level. Clockwise will increase the output. Counter clockwise will decrease the output...
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Page 8 )ljxuh( outputs five way binding posts are provided. One pair for each channel. They are designed to accept a banana-type plug or spade lug connector (shown below) and are color coded for easy identification. The red (+) post should always be connected to the speakers (+) jack. The black (-) ...
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Page 9 )ljxuh) )ljxuh* st260’s internal bus structure in order to gain access to the internal bus structure, you must first remove the top cover. Turn the amplifier so the rear panel is facing your. The jumper modules may be seen on the circuit board just behind the level controls. Below is the defa...
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Page 10 r bus - along with being the right channel input, it is used as the input to the right bus and the right source for the ‘l+r bus’. Because it is a bus input, any signal input here will appear at the ‘r bus’ jumper terminal for both of the st260’s jumper modules. L+r bus - installing a jumper...
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Page 11 )ljxuh+ )ljxuh, )ljxuh- mono application (medium current) the st260’s two output channels may be paralleled (mono) to combine the left and right channels output current. This feature allows the amplifier to double its apparent output current. To use, place the source group jumper for both ch...
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Page 12 )ljxuh. )ljxuh/ )ljxuh0 bridged application (high voltage) the st260 may be bridged to drive a high impedance speaker. To use, place the source group jumper for both channels on the ‘l bus’ jumper terminal. Place the volume group jumper for both channels on the ‘no vol’ jumper terminal. Plac...
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Page 13 system installation there will most likely be a number of cables involved in the installation of your home entertainment system. Pre-planning is essential in order to maximize system efficiency. We recommend the following as a means of helping you reach that goal: make a diagram of your prop...
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Page 14 connect the wires from your speakers to the appropriate output on the amplifier. It is absolutely essential that you observe correct polarity in these connections. Example: if you connect your right output of your preamplifier to r channel input on the amplifier, remember to connect your rig...
Page 17: ** Note
Page 15 troubleshooting problem possible cause possible solution no sound (‘on’ led not illuminated) 1. Power cord not plugged in. 2. Power off at ac source. 3. Ac power inlet fuse blown or faulty. 4. Control switch in the wrong position. 1. Reconnect power cord. 2. Check ac switch or fuse. 3. Check...
Page 18: St260 Specifications
Page 16 st260 specifications power rating: 8 ohms 60 watts @ 1 khz 4 ohms not recommended frequency response 5 hz - 45 khz input sensitivity 0.77 volts thd (s+n) 0.09 % @ 1 khz input impedance 33.2 k ohms damping factor 100 current (peak to peak) 20 amps slew rate 14 v / ) sec dynamic headroom 1.4 d...
Page 19: Limited Warranty
Page 17 limited warranty b&k components ltd., referred to herein as b&k, warrants your b&k equipment against all defects in material and workmanship for a period of five years from the date of purchase. This warranty applies only to the original purchaser and only to equipment in normal residential ...
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B&k components, ltd. 2100 old union road buffalo, new york 14227 716-656-0023 www.Bkcomp.Com.