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WARRANTY REGISTRATION FORM
Unit Serial Number: _______________________________________
Customer Name:
Address:
Date of Purchase:
Purchased From:
Dealer Name:
Address:
IMPORTANT NOTE:
In order to receive the full five year product warranty, please mail this
completed form together with a copy of your sales receipt to Balanced Audio
Technology at the address below, within thirty days of purchase.
Failure to do so will result in the product being warrantied for one year
from the date of manufacture.
1300 First Stat Blvd. Suite A W ilmington DE 19804 Tel: 302-999-8855 www.balanced.com
VK-90
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Summary of Contents for Balanced Audio Technology VK-90
- Page 1 VK-90 WARRANTY REGISTRATION FORM Unit Serial Number: _______________________________________ Customer Name: _______________________________________ Address: _______________________________________ _______________________________________ Date of Purchase: _______________________________________ Purchased From: Dealer Name: _______________________________________ Address: _______________________________________ _______________________________________ IMPORTANT NOTE: In order to receive the full five year product warranty, please mail this completed form together with a copy of your sales receipt to Balanced Audio Technology at the address below, within thirty days of purchase.
- Page 2 VK-90 Vacuum Tube Balanced Stereo Preamplifier Owner's Manual 1300 First Stat Blvd. Suite A W ilmington DE 19804 Tel: 302 -999-8855 www.balanced.com...
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Page 3: Table Of Contents
TABLE OF CONTENT INTRODUCTION Package Content Physical Placement Connecting to your system FRONT PANEL CONTROLS VK-90 Power On sequence Turning the VK-90 Off PHASE Button and LED MONO button and LED MUTE button and LED INPUT selection VOLUME knob DISPLAY format... -
Page 4: Introduction
Thank you for your purchase of the Balanced Audio Technology VK-90 preamplifier. Please read this owner's manual to obtain the full benefit of the VK-90 in your system. It will provide you with the needed safety information and operating procedures for this exceptional unit. -
Page 5: Physical Placement
All that is required to connect a single-ended component with RCA connectors to the VK-90’s inputs or outputs is the optional balanced to single-ended adapters. These adapters are available from an authorized Balanced Audio Technology dealer at a nominal charge. -
Page 6: Vk-90 Front Panel Controls
2. Normally the VK-90 will be not muted (Mute LED on the display is OFF) and will begin playing at the end of the 50 second delay. If so desired, the unit can be put in the MUTE mode during this delay interval either by depressing the front panel MUTE switch or by using the MUTE button on the VK-R5 remote control transmitter. -
Page 7: Phase Button And Led
BALANCE adjustment when the VK-90 is switched into its Balance mode. More on that in the corresponding sections of this manual. The volume control knob on the VK-90 is linked to a digital encoder and is of a continuously rotating type (there are no stops). -
Page 8: Display Format
DISPLAY FORMAT: The VK-90 Vacuum Fluorescent Display (VFD) is capable of showing up to twelve alphanumeric characters. Its format depends on the mode of operation. In the normal PLAY mode the display has the following format: 1. One character indicating the selected input number. -
Page 9: Display Brightness Function
The VK-90 has two mute modes: manual and automatic. The blue LED above the Mute button goes ON when the unit is in MUTE state. To MUTE the VK-90, depress the MUTE button located on the right side of the front panel. Depressing this button again will return the unit to its normal operation and turn the mute LED off. -
Page 10: Programmable Functions
VK-90 PROGRAMING FUNCTIONS The VK-90 programming functions allow the user to optimize the unit configuration for any particular system set up. The flexible programming facility defines each signal input with a group of user-selectable parameters that are then stored in the unit’s memory. Every time a particular input is selected, its unique combination of parameters is loaded into the operating memory. -
Page 11: Parameter Definitions
Parameter Definitions: Every input of the VK-90 is defined with the following set of parameters. 1. Input name (Examples include CD1, DVD1, PH-1, VKD5, or any other combination of up to four characters including the Latin, Cyrillic and Greek alphabet as well as digits) 2. -
Page 12: Volume Offsets
It is quite common to have sources with very different output levels connected to a preamplifier. In this case, switching between different inputs is usually accomplished by a large change in volume. The VK-90 allows the user to avoid this inconvenience by setting volume offsets between different inputs (using ANY input as a reference). -
Page 13: Phase
PHASE programming. Select the desired input. Press the Function button three times. The display will read: PHASE NINV. Use the volume knob to set the condition to NINV, INV or LAST. Exit the programming mode by pressing and holding the Function button. NOTE: In the LAST mode, the state of the PHASE switch will be the same as used the last time for that particular input. -
Page 14: Fixed Gain
Most often it is required to set the preamplifier gain to Unity (Gain of 1). The VK-90 allows the user to do so by using its FIXED gain function. -
Page 15: Input Name
INPUT NAME programming: The VK-90 allows the user to assign any a custom name to any input. Those names may include up to four characters. The default names for the inputs are as follows: TAPE AUX1 AUX2 Any combination of up to four Latin, Cyrillic, Greek alphabet characters or digits can be used to name the source. -
Page 16: Remote Control Functions
Mute Pressing this button will cause the MUTE function in the VK-90 to toggle between ON and OFF states. The Mute LED on the VK-90 front panel will reflect the status of the Mute circuit. -
Page 17: Input
VK-R5 remote control transmitter. Fuse Protection: A blown fuse in the VK-90 is an indication of a serious problem. If a replacement fuse fails as well, no further attempts should be undertaken. Please contact the factory for professional service. The proper fuse ratings are as follows: For 100-120 VAC Units: 2.5A 250V Slow Blow... -
Page 18: Resetting The
Doing so will erase ALL user programmed setpoints, and will return the unit to its factory default state. In order to RESET the VK-90, do the following: 1. Turn the unit OFF. 2. Disconnect the power cord from the back of the unit. -
Page 19: Warranty
(available from the factory via phone or fax). Upon receipt of defective product, Balanced Audio Technology agrees to repair the product without charge for parts (except vacuum tubes if the unit is more than one year old), or labor. The product will then be returned via prepaid, insured freight, with carrier at the sole determination of Balanced Audio Technology.
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