Emotiva Stealth SP-1 User Manual page 19

Stealth SP-1 Input Selector and Phono Preamp
Troubleshooting (line level inputs)
If you don't get any sound at all....
Make sure that you have selected the correct input device.
Make sure the SP-1 has power and the halo ring around the selected input is lit.
Check your source device.
Troubleshooting (phono input)
If you don't get any sound at all....
Make sure that you have selected the correct input device.
Make sure the SP-1 has power and the halo ring around the selected input is lit.
Check your source device.
If you get steady hum or noise....
Phono cartridges put out very small signals. While the SP-1 is quite well shielded
(compared to most phono preamps), it will still amplify noise that is picked up by
the turntable, the cartridge, and the interconnect cables. Placement and connection
of a turntable for best performance requires more care than with most line-level
components.
Check the wires going to your turntable.
Make sure that your cables and turntable aren't near any power cables.
If your turntable has a ground cable, attach it to the ground terminal on the SP-1.
Try relocating your turntable or rearranging the connecting cables; especially ensure
that the interconnects are not run close to the turntable's power cable.
If you get noises or "birdies" that come and go....
This sort of noise is usually interference from nearby appliances, especially digital
devices like computers, cordless phones and cell phones, CF lamps, TVs, air
conditioners, and microwave ovens. This interference can come through the power lines
or through the air.
Make sure your SP-1 and your turntable aren't located close to sources of interference.
Locate the SP-1 near your turntable and use short interconnects between them.
Try plugging your turntable and / or the SP-1 into a different outlet.
Try using a power conditioner (like our excellent CMX-2).
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