Parasound Zphono XRM, Руководство пользователя

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10
Frequently Asked Questions
Why is there no sound from the speakers?
- Ensure the front panel Input Switch is set to the correct option.
- Check that the power LED on the front panel is illuminated indicating the unit is powered on.
- Check that input and output cables are secure at both ends.
I can hear a background hum or hiss from the speakers
- Try a lower gain setting.
- Make sure that you have attached your turntable’s ground wire to the ground terminal on the
back panel of the Zphono XRM.
- Move audio cables and AC cords away from each other.
- Try to route audio cables and AC cords perpendicular to each other.
- Ensure that the Zphono XRM, preamp, power amp (or integrated amp) are plugged into the
same wall AC outlet or power strip.
-You might find that you need to attach the Zphono XRM Ground terminal to an audio ground
on your preamplifier. Contact Parasound Technical Service for specific instructions.
- If you have cable TV in your system try disconnection the incoming cable line. If the hum
goes away then you may need a cable TV ground loop isolator.
The sound is distorted 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 cartridge but the turntable is connected to the
MM input.
Should I use Balanced XLR or Unbalanced RCA connections?
We generally recommend balanced connections if your line stage preamplifier or integrated
amplifier has balanced XLR inputs. The Zphono XRM’s balanced outputs enable you to take
full advantage of the inherent noise-rejection capability. Recording and broadcast studios use
balanced connections exclusively because balanced interconnects have an inherent ability to
reject external sources of noise and hum, even when components are far apart and connected
by long cables. Many high-quality preamplifiers and integrated amplifiers include balanced
input connections with XLR jacks for the same reasons.
Note: Balanced XLR connections are 6 dB louder because the balanced circuit carries
twice the voltage. Music will sound noticeably louder than with unbalanced connections.