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 Conrad-Johnson LP260m mono-

block power amplifier Owner’s Manual

1

Thank you

 for selecting the LP260m mono-block power amplifier to

power  your  audio  system.  The  LP260m  mono-block  power
amplifier  draws  on  three  decades  of  research  at  conrad-johnson
into  the  reproduction  of  recorded  music.  The  result  is  a  power
amplifier  with  a  remarkable  ability  to  recreate  the  dynamics,
textures,  tonalities,  and  ambience  of  live  musical  performances.
With the LP260m mono-block power amplifier, we believe that you
will  experience  the  excitement  of  discovery  in  hearing  more  from
your favorite recordings than ever before.

At  conrad-johnson,  we  expect  our  products  to  be  a  source  of
satisfaction  and  of  pride  to  their  owners  for  many  years  to  come.
Accordingly,  circuit  designs,  parts  and  materials  for  all  conrad-
johnson  products  are  selected  with  a  view  to  maintaining  optimal
performance  over  the  years.  Our  reputation  for  producing  among
the  industry's  most  reliable  components is a natural consequence
of this engineering approach.

Although  operation  of  the  LP260m  mono-block  power  amplifier  is
quite  straightforward,  please  take  a  few  minutes  to  read  this
manual for useful information on its installation and operation.

In  closing,  we’d  like  to  welcome  you  to  the  family  of  conrad-
johnson  owners.  We  want  you  to  enjoy  your  conrad-johnson
product to the fullest. To this end, our staff stands ready to answer
any questions you may have about the function and application of
your  LP260m  mono-block  power  amplifier,  and  to  provide  any
needed  service  both  during,  and  after  the  warranty  period.  Our
goal is to heighten your enjoyment of recorded music.

Summary of Contents for LP260M

Page 1: ...Conrad Johnson Owner s Manual LP260M Mono block Power Amplifier conrad johnson It just sounds right ...

Page 2: ...ny years to come Accordingly circuit designs parts and materials for all conrad johnson products are selected with a view to maintaining optimal performance over the years Our reputation for producing among the industry s most reliable components is a natural consequence of this engineering approach Although operation of the LP260m mono block power amplifier is quite straightforward please take a ...

Page 3: ... authorized conrad johnson dealer in the United States for use in the United States d Normal wear e Incidental or consequential damages are not covered under this warranty Some states do not allow the exclusion of incidental or consequential damages so this exclusion may not apply to you Obtaining Warranty Service To obtain warranty service the unit must be shipped along with evidence of purchase ...

Page 4: ...The conrad johnson service department can also be reached by e mail at service conradjohnson com by phone at 703 698 8581 or by fax at 703 560 5360 Service If your conrad johnson audio component requires service repack it using the original box and packing material and ship to the Service Department address above Boxes and packing materials can be purchased through our service department if you no...

Page 5: ...re has been taken in the design of the LP260m mono block power amplifier to minimize its susceptibility to radio frequency interference and other forms of EMI Choice of materials physical layout grounding practice and power supply design have all been specified with a view to reducing the impact of electromagnetic fields on the performance of this unit At the same time however our primary goal is ...

Page 6: ...stem the two channels should be connected in correct relative phase This means that when the same signal is applied to both channels the right and left channels speaker diaphragms will move synchronously in and out together Terminals on speakers are usually coded one designated C ground or black the other designated or red In phase connection of the speakers can normally be achieved by taking care...

Page 7: ...ono block power amplifier We highly recommend that you purchase replacement tube sets from conrad johnson design We anticipate tube life to accommodate two to three years of operation without degradation in normal use if the amplifier is switched off when not in use If it is left on at all times tube life can be exhausted in a matter of a few months The LP260m mono block power amplifier has been d...

Page 8: ...should be performed whenever the amplifier s output tubes are replaced and after each six months of average use PLATE FUSE Your LP260m mono block power amplifier has been fitted with a plate supply fuse 5x20mm 2Amp fast blow ceramic that is installed to protect the amplifier circuitry in the event of output tube failure The fuse holder is physically located inside the amplifier in fuse clips on th...

Page 9: ...by moving in they create a fall in pressure and the system is said to be phase inverting Each component in the stereo system either preserves the phase of the incoming signal and is said to be phase correct or inverts the phase and is said to be phase inverting It is unimportant whether an individual component is phase correct or phase inverting as long as the system as a whole is phase correct Th...

Page 10: ...system dependent those that are top ranked on one system may be a poor choice for a different system Consult your conrad johnson dealer for recommendations for your specific system Performance Tip Warm up the LP260m mono block power amplifier before listening The sonic performance of the LP260m mono block power amplifier improves noticeably as the unit warms up The midrange becomes more lucid the ...

Page 11: ...n a compartment in the ac line cord receptacle mounted on the back of the amplifier and by four separate internal fuses on the secondary circuits of the transformer F1 F4 located on the bottom of the pc board A failure of any of these fuses is a symptom of a more serious problem and a competent service technician should be consulted In no event should fuses be replaced with a value or type differe...

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