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Connecting & Adjusting your Zphono XRM 

Always disconnect your Zphono XRM’s AC cord and line stage preamp or integrated amplifier AC 
cords before making or changing the input or output connections.  Inserting or removing turntable 
cables or output interconnects while the Zphono XRM and your integrated, line stage preamp or 
receiver are turned on can result in a blast of sound that can damage your loudspeakers.  Make 
sure there is no strain or tension on any cables that could cause them to pull loose.   

 
 
 

Turntable Connections 

The Zphono XRM has separate input jacks and circuitry for MM (moving magnet) and MC 
(moving coil) cartridges.  Connect your turntable’s signal cables to the Input jacks on the Zphono 
XRM that correspond to the type of cartridge you are using.  You can connect two turntables 
simultaneously if one turntable has an MC cartridge and the other turntable has an MM cartridge.   
You can also use a turntable with two tonearms provided one is equipped with an MC cartridge 
and the other with an MM cartridge. If you are unsure what type of cartridge you have then start 
with MM since it is the most common. 
 
 

Use the MM Input jacks if your cartridge type is MM. 

Use the MC Input jacks if your cartridge type is MC. 

 
 

Ground Connection  

The turntable’s ground wire attaches to the Zphono XRM Ground terminal at the left side of the 
rear panel. If you are using two turntables or a single turntable with two tonearms connect both of 
their ground wires to this ground connection. 
 

Note:

  In some systems eliminating hum or buzz might require connecting your turntable ground 

wire directly to your integrated amplifier or preamp instead of to the Zphono XRM. You can use a 
chassis screw or the outer ring of an RCA connector.  In rare instances hum might be lowest if 
your turntable ground wire is not attached at all. 

 

Important Note

:  Turntables and phono preamps are very sensitive to electromagnetic fields that 

can cause audible hum. To minimize hum follow these guidelines: 
 

  Place your turntable(s) as far as possible from amplifiers and AC power 

line conditioners.   

  Run your turntable signal cables as far as possible from power amplifiers 

and AC power line conditioners.   

  Do not route the turntable signal cables parallel with any AC cords.   

  Wherever turntable signal cords must cross AC wires they should cross at 

a 90

o

 right angle.   

  It might be necessary for you to experiment with the exact positioning of 

the turntable signal cables to minimize hum. 

 

Содержание Zphono XRM

Страница 1: ...Zphono XRM Phono Preamplifier OWNER S GUIDE ...

Страница 2: ...g This plug will only fit into a grounding power outlet If you are unable to insert the plug into the outlet contact your electrician to replace your obsolete outlet Do not defeat the safety purpose of the grounding plug 11 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them 12 Lightning Unplug the un...

Страница 3: ...ar Panel Illustrations 6 Turntable Connections 7 Cartridge Gain Selection 8 MC Cartridge Impedance Adjustment 8 Audio Output Connections 8 AC Power Connection 9 Front Panel Controls 9 Zphono XRM Design Overview 9 Frequently Asked Questions 10 If You Require Assistance or Warranty Repair 11 Specifications 12 ...

Страница 4: ... store it inside the Zphono XRM s carton Five Digit Serial Number located on the bottom __________ Date of Purchase ____________ Name of Parasound Dealer where you purchased it ___________________ Parasound Dealer Phone Number _______________________ Important Warranty information There is no Parasound warranty for this unit if it was not purchased from an Authorized Parasound Dealer Investigate w...

Страница 5: ...e so you ll be able to turn it around for access to its rear panel connections Place your Zphono XRM where you can route turntable and output b cables as far as possible from any AC cords Where signal cables must cross AC cords they should do so only at a 90 right angle We recommend that you do not place the Zphono XRM above a power amplifier or any other component which uses a large power transfo...

Страница 6: ...6 ...

Страница 7: ...the MM Input jacks if your cartridge type is MM Use the MC Input jacks if your cartridge type is MC Ground Connection The turntable s ground wire attaches to the Zphono XRM Ground terminal at the left side of the rear panel If you are using two turntables or a single turntable with two tonearms connect both of their ground wires to this ground connection Note In some systems eliminating hum or buz...

Страница 8: ...just knob allows you to fine tune the input impedance for MC cartridges over a range of 50 ohms to 1050 ohms Cartridge manufacturers recommend what they consider to be an optimal load impedance However their published specification won t necessarily give you the best results in your system We encourage you to experiment with this control and use whichever load impedance you feel results in the bes...

Страница 9: ...is reduces audio output below 40Hz This switch is especially useful if your turntable is susceptible to feedback from your speakers and subwoofer or if you hear footsteps when you walk near the turntable Some older records may also be pressed with audible rumble If you are hearing low frequency rumble in your speakers this filter will help reduce it MC MM Input Switch This switch selects between t...

Страница 10: ...and too loud Try a lower gain setting The most frequent reason for distortion is using an MM cartridge but the turntable is connected to the MC input The higher voltage of the XLR balanced outputs could overload the input stage of your line level preamp or integrated amp Try using the RCA unbalanced outputs The sound is faint Try a higher gain setting The most frequent cause is using an MC cartrid...

Страница 11: ...ized Dealer 3 You are not the original owner The Parasound warranty is not transferable 4 Unit s serial number was removed modified or defaced 5 Unit shows evidence of abuse and or misuse 6 Unit was modified in any way 7 A prior repair was attempted by an unauthorized repair station Before You Return Any Unit to Parasound for Service Do not ship your Zphono XRM to Parasound without a Return Author...

Страница 12: ...ting 92dB input shorted IHF A weighted 88dB input shorted unweighted Signal to Noise Ratio MC 60dB Setting 82dB input shorted IHF A weighted 80dB input shorted unweighted Inter channel Crosstalk 80dB at 1kHz Input Impedance MM 47kΩ MC 50 1050Ω Output Impedance Unbalanced 150Ω Balanced 150Ω per leg Input Sensitivity at 1 kHz 4mV Input 40dB 5 mV for 500mV output 50dB 5 mV for 1 5 Volts output 60dB 5...

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