Balanced Audio Technology VK-500 Manuale utente

VK-500

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 State Blvd. Suite A Wilmington, DE 19804

Tel: 302-999-8855 Fax: 302-999-8818

VK-500

Balanced Power Amplifier

Owner's Manual

1300 First State Blvd. Suite A Wilmington, DE 19804

Tel: 302-999-8855 Fax: 302-999-8818

Introduction

Thank you for your purchase of the Balanced Audio Technology VK-500 balanced power

amplifier. Please read this owner's manual to obtain the full benefit of the VK-500 in your

system. It will provide you with the needed safety information and operating procedures for this

exceptional unit.

WARNINGS:

To prevent the possibility of serious injury, electrical shock or fire:

DO NOT operate with the cover removed.

DO NOT expose to rain or moisture.

DO NOT defeat the ground power-plug.

DO NOT replace fuses with anything other than the same type and rating as supplied by the

factory.

Package Contents

Included in the box should be the following:

Description Quantity

VK-500 Power Amplifier 1

Power Cords 2

Spare Fuses 3

Torx Wrench (T-10) 1

Spare Top Cover Screws 5

Owner’s Manual 1

Optional Accessories (as ordered)

Save all the packaging material in a safe dry area for the unlikely event that you need

to return the VK-500 to the factory for service.

Physical Placement

It is recommended that you provide for at least 6" of free space around the unit for proper

ventilation.

Mount the unit on a hard surface with proper ventilation underneath.

Do not stack the VK-500 power amplifier on top of other units, nor vice versa.

IMPORTANT NOTES:

To assure reliable operation always turn the VK-500 OFF while making or changing

input or speaker connections. No connections should be made while the

amplifier is ON.

If the VK-500 was turned OFF for any reason, wait at least 30 seconds before

turning it back ON.

Power Connection

The VK-500 is a true Dual Monoblock design with two separate power cord connections (one

for each channel) and two front panel power switches. Due to the amplifier’ high power

rating, it is important to assure the good quality power line for each channel. If separate

circuit outlets are used for left and right channels, it is recommended that both circuits be

connected to the same phase of the power line. Otherwise, a high level of hum can be

present.

Input Connections

Best results will be obtained when connecting the VK-500 to a balanced preamplifier.

However, the VK-500 is designed to accept either balanced or single-ended inputs.

Balanced Components

Use balanced XLR interconnects to connect the VK-500 to balanced preamplifier. Input

connectors are clearly marked on the back panel.

Note: The VK-500 input XLR connectors are wired as follows:

Pin 1: common/shield

Pin 2: positive

Pin 3: negative

Single-Ended Components

Single-ended components have RCA connectors. The VK-500 power amplifier is

designed to work with either single-ended or balanced preamplifiers connected to its inputs.

All that is required to connect a single-ended preamplifier with RCA connectors to the

VK-500’s inputs is the optional balanced to single-ended adapters. These adapters are

available from Balanced Audio Technology at a nominal charge.

Input Adapters: RCA Female to XLR Male

Speaker Connections

There are two sets of high quality binding posts on the back panel of the VK-500 (one for

each channel). These can accommodate a wide variety of speaker cable terminals. You

can use a 1/2” wrench to tighten these binding posts, however excessive force should be

avoided to eliminate the chance of breakage.

Operating the VK-500

Turning the VK-500 On:

There are two power switches on the VK-500 front panel. The two channels can be turned

ON or OFF independently at any time. However, if any channel of the VK-500 was turned

OFF even for a short period of time, you should wait at least 30 seconds before turning it

back ON. This precaution will minimize the stress on internal components.

When you turn the unit ON, the VK-500 will automatically go through a gentle power-on

sequence. At the end of a 10 second delay the unit will unmute and become operational.

Fuse Protection:

Each channel of the VK-500 is protected by three fuses:

1. The main line fuses are located on the back panel. These fuses should be checked if

one of the front panel blue LED’s fails to light.

2. Two internal fuses are mounted on the amplifier circuit boards. These fuses have two

green LED’s associated with them. Both LED’s should be lit when unit is ON and operating

properly. Failure of either of these LED’s to light indicates that the corresponding fuse is

open.

CAUTION:

Make sure that the VK-500 is turned OFF and disconnected from the power line

before proceeding with checking or replacing fuses.

A blown fuse in the VK-500 is an indication of a serious problem. If a replacement fuse fails

as well, no further attempts at servicing the unit should be undertaken. Please contact the

factory for professional service.

Fuse Ratings

The proper ratings for the main line fuse are as follows:

For 100-120 VAC Units: 10A 250V Slow Blow

For 200-240 VAC Units: 7A 250V Slow Blow

The internal printed circuit board mounted fuses are 15A Fast Acting type.

Factory supplied fuses should be only replaced with the same type and rating parts.

Servicing

The Balanced Audio Technology VK-500 should not require service to maintain its high

performance. In case of malfunction, if replacing fuses fails to eliminate the problem, please

direct any further service inquiries to the factory.

Cleaning

To remove dust, occasionally wipe the front and top surfaces of your VK-500 with a damp

soft cloth. If fingerprints appear, you may use a mild, non-alkaline soap solution. Do not use

abrasive cleaners, as they may damage the fine finish of the unit.

Five Year Limited Warranty

Terms and Conditions

1. Limited Warranty

Upon receipt of the attached warranty registration form, Balanced Audio Technology warrants the purchased

product to be free from manufacturing, materials, and workmanship defects for five years from date of original

purchase, excepting vacuum tubes, subject to the following conditions. Failure to return the enclosed

registration form within 30 days from original purchase will result in a warranty period of one year from

the date of manufacture.

2. Limited to Original Purchaser

This warranty is for the sole benefit of the original purchaser of the covered product, and may not be transferred

to a subsequent purchaser of the product.

3. Conditions and Limitations

This warranty is subject to certain conditions and limitations, as follows. This warranty is void and inapplicable

if the product has not been used in accordance with the instructions found elsewhere in this manual, or if it has

been misused or abused, damaged by accident or neglect, or in transport once in possession of the purchaser.

The warranty is also void if the product has been repaired, modified, or tampered with by anyone other than

Balanced Audio Technology or its specifically authorized agents.

4. Remedy

If this product contains a materials, manufacturing, or workmanship defect that cannot be repaired at the

dealership where the product was purchased, it must be packed in original packaging and returned to Balanced

Audio Technology via insured freight, at the owners expense. If replacement packaging materials are required,

they will be supplied by the factory at a nominal charge. Returned products must be accompanied by a

written description of the defect, and a return authorization number (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. This constitutes the purchasers sole remedy.

5. Design Changes

Balanced Audio Technology reserves the right to modify its products or change specifications at any time

without obligation or liability to previous purchasers.

6. Miscellaneous

Any implied warranties relating to the above product shall be limited to the duration of this warranty. This

warranty does not extend to any incidental or consequential costs or damages to the purchaser. This warranty

gives you specific legal rights. You may also have other rights which vary from state to state.

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