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Summary of Contents for Atma-Sphere MP-3 Mk. 3.2
- Page 1 ATMA-SPHERE MUSIC PREAMPLIFIER model MP-3 Mk. 3.2 OWNER'S MANUAL Please study this document carefully before using equipment RoHS © 2012 Atma-Sphere Music Systems Inc 1742 Selby Ave. St. Paul, MN 55104 651-690-2246...
- Page 2 Please read the manual carefully and follow the instructions closely. If you have any questions, do not hesitate to contact your dealer and always feel free to contact us at ATMA-SPHERE MUSIC SYSTEMS. Here's to many years happy listening!
- Page 3 HOW TO OBTAIN WARRANTY SERVICE: If your unit requires repairs covered by this warranty, you MUST obtain a return authorization number from ATMA-SPHERE MUSIC SYSTEMS. You are responsible for transporting the unit to ATMA-SPHERE MUSIC SYSTEMS, 1742 Selby Av., St.
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Page 4: Operating Notes
Such practice can reduce hum and buzz but more importantly eliminate artifact from the interconnect cables. An optional terminator is available from ATMA-SPHERE for amplifiers without this provision. The GAIN TRIM is provided to adjust for proper left-right balance effect and to allow for range on the volume control. - Page 5 On the other hand, the input cables may be very critical, depending on the source. Atma-Sphere offers a variety of interconnect cables for this purpose. Contact your dealer or Atma-Sphere for details.
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Page 6: Troubleshooting Tips
(resulting in a ground loop). If you are trying to operate the output of the preamp with single- ended equipment, buzz may occur if the conversion from balanced to single-ended is not handled properly. Contact Atma-Sphere for assistance. In some situations an isolation transformer can be helpful. -
Page 7: Usage Suggestions
For use with sub woofer and other bi-amplified systems: Have your crossover updated with correctly balanced inputs. If this is not possible, a specialized balanced-to-unbalanced sub woofer-optimized line transformer is available from Atma-Sphere and works quite well. If you do not use one of these techniques, it is likely that you will encounter a buzz. - Page 8 If a high output cartridge is used, a jumper plug that replaces one of the phono tubes can be installed to reduce gain. Contact Atma-Sphere for details. A moving coil step-up transformer option is also available for cartridges of less than 0.1mV. It can be used to reduce noise, even with higher output cartridges, at a slight cost of musicality.
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Page 9: Warranty Registration Form
WARRANTY REGISTRATION FORM MPORTANT: This form must be filled out and returned to ATMA-SPHERE MUSIC SYSTEMS within 10 days of purchase to validate the warranty! Please type or print clearly. NAME: ___________________________________________________________________________________ Address: __________________________________________________________________________________ City: _______________________________________________State: __________zipcode: _______________ Country: __________________________________________________________________________________ Name of dealership: ________________________________________________________________________ MP-3 Mk.
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