Bandwidth Audio Kaskode One Owner'S Manual Download

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Kaskode One Rev 1.1

WARNING

Configuration of the Kaskode One will require removing the

cover of the unit. Before removing the cover for any reason,

make sure to power off the unit and unplug from mains wall

outlet.

Wait a minimum of 60 seconds for all voltage to dissipate before

opening the cover.

FAILURE TO READ OWNER’S MANUAL BEFORE FIRST USE CAN

VOID YOUR WARRANTY

Summary of Contents for Kaskode One

Page 1: ...Kaskode One Phono Preamplifier Owner s Manual www bandwidthaudio com sales bandwidthaudio com...

Page 2: ...the cover of the unit Before removing the cover for any reason make sure to power off the unit and unplug from mains wall outlet Wait a minimum of 60 seconds for all voltage to dissipate before openi...

Page 3: ...service contact Bandwidth Audio HIGH VACUUM TUBE TEMPERATURES Vacuum tubes can get extremely hot with bulb temperatures capable of reaching 200 C Do not touch or attempt to remove the tubes while they...

Page 4: ...Input Wiring Diagram 10 1 8 Tonearm and Turntable Wiring 11 1 8 1 RCA Connection 11 1 8 2 XLR Connection MC Only 12 1 9 Subsonic Filter 14 2 0 Cartridge Loading 15 2 1 MM Cartridge Loading Options 15...

Page 5: ...re 6 Turntable Wiring for XLR Option 2 13 Figure 7 Location of J3 J4 subsonic filter jumpers 14 Figure 8 MM frequency response with input capacitances 15 Figure 9 Location of S2 and S5 switches for se...

Page 6: ...on see 1 5 11 6 For turntable and tonearm wiring best practices see 1 8 Set Subsonic filter to your preference see 1 9 1 1 Phono Preamplifier Placement For best operation and longest life of component...

Page 7: ...differential can now drive a current through the audio ground causing noise Faulty equipment on the AC line can also be a source of ground noise 1 3 Powering ON OFF The Kaskode One is designed with a...

Page 8: ...been installed at the factory To install the MC modules Align the MC modules so that the white orientation markers are aligned on both the main preamp PCB and the PCB of the module After the correct o...

Page 9: ...put Wiring Diagram In balanced input mode either the RCA or XLR input can be used however the XLR input is recommended When using a high quality 3 conductor XLR cable the positive and negative signals...

Page 10: ...module as well as the resistive loading Moving Magnet type cartridges will require setting the capacitive loading 1 7 Kaskode One Input Wiring Diagram Figure 2 Input Wiring Diagram Figure 2 above sho...

Page 11: ...pletely independent from each other with no shared connection With no cable connected to the turntable use a multimeter set to measure resistance in Ohms to check the continuity between the grounds ou...

Page 12: ...the Positive and Negative connections on the turntable XLR connector should be completely independent from each other Also there should be no shared connection between Left and Right channels XLR cab...

Page 13: ...skode One input XLR ground so there is still hum rejection However the plinth and tonearm are floating so a wire to connect these parts to the Kaskode One Ground terminal is required Figure 6 Turntabl...

Page 14: ...It is generally a good idea to use this filter so that inaudible low frequency noise is not passed to components downstream consuming amplifier headroom and shifting the DC operating point of both th...

Page 15: ...skode One has been set to 47K 2 1 2 MM Input Capacitance S2 S5 Input capacitance loading for MM cartridge types is extremely important for best performance The user will need to set the input capaciti...

Page 16: ...the Right channel and S5 for the Left channel by moving the switch positions 1 4 indicated to the ON position Note Orientation of S2 and S5 are rotated 180 from each other Be sure to set both S2 and S...

Page 17: ...e Table 1 Input Capacitance for each switch Table 2 Input Capacitance Combinations The figure below shows how switches S2 S5 should be set for 150pF of input capacitance S2 S5 Capacitance Loading Tabl...

Page 18: ...no additional selected capacitance of the phono preamp The native input capacitance of the Kaskode One is an extremely low 15pF This allows the user to better tune the capacitance for their desired c...

Page 19: ...o the proper Secondary Loading Resistance Rsl must be selected for the desired cartridge load From Figure 11 above the load seen by the MC cartridges is the Rsl impedance reflected from secondary to t...

Page 20: ...ading Resistance Rsl MC Cartridge Load Resistance Zp 47000 1910 478 119 39000 1590 398 99 30000 1230 308 77 20000 830 208 52 15000 630 158 39 10000 430 108 27 5586 254 63 16 3170 157 39 10 1000 70 18...

Page 21: ...Rsl value that will give the cartridge manufacturer s recommended load value and then tune to taste See section 2 2 2 for selecting the MC Step up Ratio See section 2 2 3 for selecting the Rsl value...

Page 22: ...up ratio by the MC cartridge nominal output voltage VMC The output voltage for the MC cartridge should be stated by the manufacturer Equation 2 MC voltage after step up The MC transformer ratio should...

Page 23: ...skode One Rev 1 1 23 The MC step up ratio is selected by setting the dip switches on the MC module board The figure below shows the location of the switches Figure 12 Location of Step up ratio switche...

Page 24: ...diagrams below show the MC module switch configuration for the following step up ratios 1 5 Step up Ratio 1 10 Step up Ratio 1 20 Step up Ratio 1 2 3 4 5 6 7 8 9 ON OFF 10 1 2 3 4 5 6 7 8 9 ON OFF 10...

Page 25: ...artridge loading as shown in Table 3 in Section 2 2 1 is selected using switches S1 and S4 on the main PCB The location of S1 and S4 is shown below Note Orientation of S1 and S4 are rotated 180 from e...

Page 26: ...acitance S2 S5 The both the MC and MM inputs share the same input capacitance Typically for MC cartridges the capacitance should be set to a minimum If desired capacitance can be added to soften the h...

Page 27: ...time delay removes the chance of pop or noise on power on During the warmup period the LED if off indicating the unit is held in an automatic mute Approximately 60 seconds after power on the LED will...

Page 28: ...mute is active 5 Power Used to turn the amplifier on and off On is in the up position Off in the down position 3 2 Back Features 1 Mains Input Socket to connect removable wall power cord Use only volt...

Page 29: ...ced connection Connectors are duplicated for Left and Right channels 4 Ground Binding post used for ground connection to turntable Accepts both bare wire and banana style connectors 5 Ground Lift In t...

Page 30: ...e Both MM and MC 0 2dB THD N MM with 3 5mV Input at 1KHz 0 05 RIAA Accuracy 0 2dB from 20Hz to 40KHz Frequency Response 3dB down 10Hz and above 175KHz MM Input referred Nosie A weighted 0 2uV 132dBu 8...

Page 31: ...10 478 398 308 208 158 108 64 or 39 72dB 1 20 119 99 77 52 39 27 or 16 Recommended Load Output 10K or greater Tubes Tested and Matched in House 2x D3A NOS Gold Pin Siemens 6x EC8010 NOS Gold Pin Sieme...

Page 32: ..._______ _________________________________________________________________________________________ General Notes __________________________________________________________________________ _____________...

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