TECHNICALLY SPEAKING continued | 15 |
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The ideal of zero voltage ground for all the compo- nents in a system is practically impossible, because some resistance between the ground points of differ- ent components is inevitable. By keeping components close together with their power cords plugged into a common AC outlet or power strip, you’ll avoid the problems created by resistance in the house’s wiring.
Hum and buzz is also caused when unwanted voltage flows through multiple component ground points called ground loops. Here are three tips to avoid ground loops:
1.Use balanced input lines with your Parasound A 52. (See Balanced and Unbalanced Lines in this section)
2.When rack mounting, always use insulated “shoul- der” washers. These break the ground loops caused by
3.Use the Ground switch on the A 52 to eliminate most ground loops. This separates the A 52’s sig- nal input ground from its chassis ground to isolate unwanted voltage in the ground shield of the unbalanced (RCA) input cable. Be sure your system installation is finished before you try moving the Ground switch from its Normal to its Lift position.
Ground Switch, set to up position
Parasound Products, Inc.
San Francisco, CA USA
L U C A S F I L M
Manufactured under license from Lucasfilm Ltd. Lucasfilm and THX are registered Trademarks of Lucasfilm Ltd.
CAUTION
To Prevent Electric Shock, Do Not
Remove Cover. No
Parts Inside, Refer Servicing To
Qualified Service Personnel.
Ch 1 | Ch 2 | Ch 3 | Ch 4 | Ch 5 |
Balanced | Balanced | Balanced | Balanced | Balanced |
Input | Input | Input | Input | Input |
Unbalanced | Unbalanced | Unbalanced | Unbalanced | Unbalanced |
Balanced |
| Audio | Sensitivity | Lift |
|
|
| 50 mV 250 |
|
|
| Man |
|
|
Unbalanced Output | Input | 12 V |
| Normal |
Inputs |
|
|
| Ground |
Auto Turn On
WARNING
To Prevent Fire Or Shock Hazard,
Do Not Expose This Unit To Rain
Or Moisture.
Fuse
AC 115V | 60Hz |
AC 230V | 50Hz |
Power Consumption: 1350W
