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Summary of Contents for Sherbourn PA 4Z-75
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Page 3: Important Safety Precautions And Explanation Of Symbols
Please read this Installation and Operation Manual thoroughly before attempting to install, configure, or operate the Sherbourn 4Z-75. After successful installation and configuration of the 4Z-75, be sure to retain this manual in a safe place for future reference. - Page 4 The power cable for the 4Z-75 should be unplugged from the outlet during severe electrical storms, or when unused for a long period of time. Only replace the fuse in the 4Z-75 with a fuse of proper value and voltage rating. The 4Z-75 should only be cleaned as directed in the Installation and Operation Manual.
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Page 5: Table Of Contents
Mechanical and Environmental ..............3 Front Panel ....................4 Rear Panel....................5 Inputs and Outputs ..................6 Installation Tips ...................7 Configuration and Operation ..............8 Performance Specifications ................9 Features ....................10 Periodic Maintenance ................11 Troubleshooting ..................12 Sherbourn Technologies, LLC Ten-Year Limited Warranty .......13 Notes ......................14 Page 1... -
Page 6: Introduction
IEC power cord. About This Manual This manual will provide you with all the information you need to install and configure the Sherbourn 4Z-75 Two-Channel Four-Zone Distribution Amplifier to achieve its optimum potential. The manual also includes a brief summary of the features offered by the 4Z-75 and a short description of how the controls work and how to perform common operations. -
Page 7: Mechanical And Environmental
Mechanical and Environmental SIDE 18” SHERBOURN 4Z-75 16.75” RACK HANDLES 1/16” 17” 19” FRONT 4” 3.5” Dimensions: 17” wide x 4” high x 18.25” deep (includes feet, binding posts, knobs, no rack kit) Weight: 27 lbs / 12.5 kg (unboxed); 38 lbs / 17.5 kg (boxed) -
Page 8: Front Panel
Front Panel ON / OFF VOLUME 1. On / Off Pushbutton Toggles the 4z-75 between On and Standby. 2. On / Off Indicator LED Red indicates Standby mode; blue indicates normal operation; flashing red indicates a Fault. 3. Zone Enable Pushbuttons (one for each zone) Toggle the status of each zone (individually) On or Off. -
Page 9: Rear Panel
Rear Panel ZONE 4 ZONE 3 ZONE 2 ZONE 1 INPUT VOLTAGE FUSE TRIGGER INPUT MASTER VOLUME POWER OUTPUT 1. Trigger Input and Output The Trigger Input is used to allow other trigger-enabled equipment to switch the 4Z-75 between On and Standby. -
Page 10: Inputs And Outputs
Inputs and Outputs Input sensitivity (for full output into 8 ohms): 800 mV Analog inputs: One stereo pair of unbalanced (RCA) inputs. Analog (line level) outputs: One stereo pair of unbalanced (RCA) outputs . Speaker outputs: 8 pairs of full-sized five-way binding posts (one pair for each channel in each zone;... -
Page 11: Installation Tips
Installation Tips Zone Control The Sherbourn 4Z-75 has two channels of amplification and four separate output zones (four zones; each zone is stereo). The front panel Zone Enable push buttons each independently connect the speakers assigned to one zone to the amplifier outputs; the push buttons toggle state and the indicator LED above each one indicates whether that zone is enabled or disabled. -
Page 12: Configuration And Operation
Configuration and Operation Operating Voltage Verify that the 4Z-75 is configured for the correct operating voltage for your area. (Voltage is set via the Input Voltage switch on the rear panel of the 4Z-75). Trigger and Zone Control Persistence Volume and Zone Enable settings on the 4Z-75 persist when the power is switched to Standby and returned to On via the front panel On / Off push button or by the assertion of a signal at the Trigger Input. -
Page 13: Performance Specifications
Performance Specifications Analog inputs: One stereo pair of unbalanced (RCA) inputs. Analog (line level) outputs: One stereo pair of unbalanced (RCA) outputs. Speaker outputs: 8 pairs of full-sized five-way binding posts (one pair for each channel in each zone; Channel 1, zones 1-4 and Channel 2, zones 1-4). Minimum recommended load impedance: ANY combination that totals 2 ohms or higher per channel. -
Page 14: Features
Features The Sherbourn 4Z-75 Two-Channel Four-Zone Distribution Amplifier combines the latest cutting edge technology with solid engineering and high quality components to deliver superior sound quality, performance, and features. Some of the more important features of the 4Z-75 include: •... -
Page 15: Periodic Maintenance
Periodic Maintenance The Sherbourn 4Z-75 requires no periodic maintenance. Cleaning the 4Z-75 • If necessary, the 4Z-75 should be cleaned gently with a soft rag. • If something sticky gets on the front panel or case of the 4Z-75, it should be cleaned with a mild cleaning solution applied to a soft rag, followed by wiping with a clean rag dampened with plain water and drying with a soft dry rag or cloth. -
Page 16: Troubleshooting
(turn the rear panel Power rocker switch Off and back On). If the fault condition persists after all inputs and outputs have been disconnected and the fault has been reset, AND the Voltage Select switch is in the proper position, please contact Sherbourn Technical Support. Page 12... -
Page 17: Sherbourn Technologies, Llc Ten-Year Limited Warranty
LIMITATION MAY NOT APPLY TO YOU. A claim under this warranty must be made by you within the Term. A claim shall not be valid (and Sherbourn has no obligation related to the claim) if it is not made within the Term and if it is not made in strict compliance with the requirements of the “How do you get service?”... -
Page 18: Notes
The CSR will provide you with a returned material authorization number (“RMA”). Ship the product to Sherbourn at the following address, with the RMA written in large, bold letters on the outside of the box, and with the letters “RMA” written before the number. Parcels arriving without a RMA number on the outside of the box will be refused.
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