DAYTON WRIGHT
DW 536
Ultra High Definition
Infranoise Pre-Preamplifier

 

 
 
 
 
 
 
 
 
 
 


                                                                                      DW-536 PRE-PREAMP
 
 
 
 

 DAYTON
 WRIGHT
 
 

 DW 536

 Ultra High Definition
 lnfranoise Pre-preamplifier
 
 
 
 
 
 

VERY LOW DISTORTION Under.001%

WIDE FREQUENCY RESPONSE
9 Hz - 300 kHz + - 1.5 dB

FAST RISE TIME
Under 1 uS

VERY LOW NOISE
70 dB S/N typical
with moving coil cartridge

VERY HIGH OVERLOAD
1.5 volts at output
 
 

          The Dayton Wright is a refined version of the DW-535 that is designed to be used between a low-output moving coil type cartridge and a conventional preamplifier.  It thus takes the place of a step-up transformer, eliminating the distortions present in a transformer, and providing vastly improved transient response and definition.

           It will operate with input loads as low as 10 ohms, or as high as 4k7.  The load impedance is altered by changing load resistors within the unit.

           This unit is equipped both with conventional phono jacks on input and output, and BNC type input connectors.

           Unlike many pre-preamplifiers, the DW 536 operates on 120 Volts 50-60 Hz Power lines.  The power transformer is located in a remote case to minimize hum pickup.  This unit has a rectifier and preliminary filtering in the remote supply, thus no power supply AC goes into the main case itself.  There is one stage of Zener stabilization, and two stages of voltage regulation using bypassed voltage standards for lowest power supply noise.


 

           The main circuit consists of several parallel cascode stages using selected low-noise PNP transistors; in a Fowler-Wright configuration for very low Early Distortion.  Loaded with a current sink, these feed a bootstrapped voltage amplifier stage followed by a split load emitter follower.  This classic circuit has been refined so that no other unit outperforms it.

           The unit has a gain of 37 dB, reasonable open loop bandwidth, and good RF rejection.
 

SPECIFICATIONS

         INPUT:          Cartridge Termination      Standard 47 ohm  Optional 10, 15, 33, 75, 100, 250,
                                           470, 1,000, or 2,200 ohms

                                Sensitivity 50 uV for 3 mV out.

                                Overload:      250 mV input for 1.5 volt out 1 kHz

         GENERAL:   Distortion      <.001%    10-20,000 Hz @ 500 uV in.

                               Frequency Response +0-3 dB 9 Hz to 300 kHz
                               +O-l dB   20 Hz to 200 kHz

                               Voltage Gain (max) 35 dB

         PHYSICAL:   Dimensions (Main Unit) 254   mm  (10 in.) Wide

                                                                     50 mm 2 in.) High
                                                                     178 mm 7 in.) Deep

                                Dimensions (Power Unit)    76   mm (3.0 in.) Wide
                                                                             64 mm (2.5 i n.) H i g h
                                                                            64 mm (2.5 in.) Deep

                                Weights   Total under 2.27 Kg. (5 lbs.)
 
 






DAYTON WRIGHT PRODUCTS ARE MANUFACTURED IN CANADA
Prices and Specifications are subject to periodic revision without notice.
 
 

THE DAYTON WRIGHT GROUP LIMITED
97 Newkirk Road North, Richmond Hill, Ontario L4C 3G4


 




















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© 1982, 1998 Wright Electroacoustics
 
 



 
 
 

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