Crown CROWN K Series Bedienungsanleitung

102010-1

4/97

K-Series-Series

-Series-Series

-Series

FCC COMPLIANCE NOTICE

This equipment has been tested and found to com-

ply with the limits for a Class A digital Device, pursu-

ant to Part 15 of the FCC Rules. These limits are

designed to provide reasonable protection against

harmful interferencewhentheequipment is operated

in a commercial environment. This equipment gener-

ates, uses and can radiate radio frequency energy

and, if not installed and used in accordance with the

instruction manual, may cause harmful interference

to radio communications. Operation of this equip-

ment in a residential area is likely to cause harmful

interferencein whichcase theuser will be requiredto

correct the interference at his own expense.

“The user is cautioned that any changes or modifica-

tions not expressly approved by Crown International

could void the user’s authority to operate the equip-

ment.”

Elkhart, IN 46515-1000 U.S.A. Telephone: 219-294-8000.

Fax: 219-294-8329. Trademark Notice:

Balanced Current

Amplifier

™,and

BCA

™are trademarks and

Crown

®is a

registered trademark of Crown International, Inc. Other

trademarks are the property of their respective owners.

Page 2

K-Series BalancedCurrentAmplifier™

Read all safety and oper-

ating instructions before

operating the K-Series

amplifier. Follow all

instructions carefully and

heed any warnings given.

Hi! I'm Mick, I'll

be giving you the

details about your

new K-Series Amp!!

ObtainassistancefrObtainassistancefr

Obtainassistancefromqualifiedseromqualifiedser

omqualifiedserom qualified ser

omqualifiedservicevice

vicevice

vice

personnelifanyofthefollowingoccurs:personnelifanyofthefollowingoccurs:

personnelifanyofthefollowingoccurs:

• The power cord or plug has been

damagedin any way.

• Foreignobjectsor liquidhasfalleninto

theamplifierenclosure.

• The amplifier has been exposed to

rain or has been partially or totally

immersed in any liquid.

• Theamplifier hasbeendropped orthe

chassis has been damaged.

• You notice a marked change in per-

formance,oryour K-Series ampother-

wise does not appear to operate

normally.

CAUTION:

Do not locate sensitive,

high-gain equipment such

as preamplifiers or tape

decks directly above or be-

low the unit. If an equip-

ment rack is used, we

recommend locating the

amplifier(s) in the bottom of

the rack and the preampli-

fier or other sensitive equip-

ment at the top.

Friendly Page

of Tips and

Warnings

Keep your K-Series amplifier

away from sources of heat,

such as a radiator or oven.

Do not cover or surround your

amp with material which may

retain heat, such as a

blanket or curtain.

Important:

Driving heavy loads for sustained periods of time

may cause parts of the amplifier’s case to reach

temperatures which will be hot to touch. But don’t

be alarmed.The amplifier’s internal protection

circuitry ensures maximum temperature levels will

remain well below any level that might be

harmful to the amplifier.

Page 3

K-Series BalancedCurrentAmplifier™

Do not drop or

spill any foreign

(or domestic)

object or liquid

into the K-Series

amplifier.

Do not attempt

to service this

unit beyond

instructions

contained in

this manual.

Refer

all other

servicing to

the Crown

Service

Department.

Protect the power

cord attached to

your K-Series am-

plifier. Route it to

avoid foot traffic

or other situations

where the cord

might be stretched

or pinched. Pay

special attention to

the cord connector

and attachment

points.

Clean your

K-Series amp

only with a

damp cloth!

Keeptheseinstructions

for future reference.

DONOTBYPASSORDEFEATTHE

GROUNDINGORPOLARIZATIONMEANS

USED ON THE K-SERIES AMPLIFIERS.

MAKESUREALL BLADES ONTHE

POLARIZEDPOWERPLUGCANBEFULLY

INSERTED INTO THE EXTENSION CORD,

RECEPTACLEOR OTHER OUTLETTHAT

WILL BE USED WITH THE UNIT.

WARNING: Shock hazard.To reduce

the risk of fire or electric shock, do

not expose this unit to rain or mois-

ture. Do not immerse your K-Series

amplifier in any liquid. Do not operate

your amplifier near a pool, bathtub or

other standing water.

Page 4

K-Series BalancedCurrentAmplifier™

Unpacking Your

K-Series Amp

Please unpack and inspect your amplifier for any damage that

may have occurred during transit. If damage is found, notify

the transportation company immediately. Only you can initiate

a claim for shipping damage. Crown will be happy to help as

needed. Save the shipping carton as evidence of damage for

the shipper’s inspection.

We also recommend that you save all packing materials so

youwillhavethemifyoueverneedtotransporttheunit.NEVER

SHIPTHE UNITWITHOUTTHE FACTORY PACK.

Page 5

K-Series BalancedCurrentAmplifier™

K-Series Features List:

Here are some of the more exciting features of your K-Series

Amplifier:

Accurate, uncolored sound with very low distortion for

the best in music and voice reproduction.

High damping factor for tight, clean bass response.

Advanced design for energy conservation.

Mono mode switches allow you to set up your amps/speakers in

the configuration that best suits your needswith combined

amp inputs, combined amp outputs, or both.

Advanced protection circuitry guards against: shorted outputs,

open circuits, DC, mismatched loads, general overheating,

high-frequency overloads and internal faults.

Extemely versatile, handling a wide range of speaker impedances

and outputs.

Exclusive BCA design provides super efficiency for quiet,

fan-free operation.

Switchable input sensitivity.

Soft start feature prevents the K-Series Amplifier from

drawing large currents when it is first turned on. This means

you dont need to delay power-on of your amps.

Can be mounted in standard (19-inch (48.3-cm)) rack or stacked

on top of each other. Uniquely molded, cast-aluminum front

panel provides exceptional air circulation even when your K-

Series amplifiers are stacked.

The best three year No-Fault full warranty in the business!

It even covers round-trip ground shipping in the U.S. for all

warranty work.

Done!

Page 6

K-Series BalancedCurrentAmplifier™

Quick Start!

Firstthingsfirst. Weknowyoujustcan’twaitto

crank up your new Crown®

K-Series

ampli-

fier. And the last thing you want to do is dig

through pages of tech-talk to find out where

the “ON” switch is. So that’s why we provided

you with this quick and simple page to get you

up and running right away. Just take a few minutes

to read through this—no more than five or ten, max—

you’ll be glad you did.

1. Make sure the

KSeries

amp and all other equipment is

turned OFF before you begin wiring. The amp power

switch, which is located on the far right side of the front

panel, is “OFF” when pressed downward.

2. Mount your

K-Series

amp securely in the rack, or position

it on a solid surface.

3. Connect the left and right inputs coming from your mixer,

preamp, or other processor. You can use either balanced

1/4-inch phone or 3-pin XLR connectors. You can also

choose to run in MONO mode, with either bridged out-

puts, “Y” inputs, or both. If so, see the sections starting

on page 15 for further instructions.

4. Connect the output wiring (left and right speakers).

5. Connect your

K-Series

amp and other equipment to the

appropriate power source.

6. Turn on your mixer, preamp, signal processor, or any

other equipment in your system EXCEPT your

K-Series

amplifier. (Remember: save the best for last.)

Page 7

K-Series BalancedCurrentAmplifier™

7. Make sure the Channel 1 and Channel 2 level (volume)

controls on your

K-Series

amplifier are turned all the way

down (counter-clockwise), then flip the power switch

“ON” (press upward). Note: After a two-second delay, the

“Enable” light will glow a bright green to indicate power is

on. If no audio signal is present at the amp, the enable

light will then switch to a dim green.

8. (Now comes the fun!) Supply input, adjust amp levels

and enjoy.

CAUTION: Excessive output levels may toast your speakers.

Crown’s

-Series amplifier has such low distortion, you may

not realize the actual level being reached until it’s too late.

Please exercise caution and drive your speakers responsibly,

or at least warn your neighbors!

Typical Stereo

Hookup

OFFON

BRIDGE

OUTPUT

OFFON

“Y” INPUT

MONO MODES

BALANCED INPUT WIRING FUSE

CAUTION:

TO PREVENT ELECTRIC SHOCK DO NOT

REMOVE

BOTTOM COVER. NO USER SERVICEABALE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

WARNING:

TO REDUCE THE RISK OF

FIRE

OR ELECTRIC SHOCK, DO NOT EXPOSE

20 A @ 100-120 VAC

10 A @ 200-240 VAC

26 dB1.4V

INPUT

SENSITIVITY

26 dB1.4V

INPUT

SENSITIVITY

CH-2 INPUTS CH-1 INPUTS

321

GND

OUTPUTS

CH-2 CH-1

OUTPUT WIRING

STEREO BRIDGE-MONO

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.

OPERATION IS SUBJECT TO THE FOLLOWING CONDITIONS:

1) THIS DEVICE MAY NOT CAUSE HARMFUL

INTERFERENCE.

PUSHPUSH

Studio Monitors or Speaker Stacks

Ch. 1

26 dB1.4 V

INPUT

SENSITIVITY

Mixer

OFFON

BRIDGE

OUTPUT

OFFON

"Y" INPUT

26 dB1.4 V

INPUT

SENSITIVITY

Ch. 2

Ch. 1

Ch. 2

Page 8

K-Series BalancedCurrentAmplifier™

What

Am I

Gonna do

With All

These

Cables??

Page 9

K-Series BalancedCurrentAmplifier™

Contents

Friendly Page of Tips and Warnings ..................... 2

Unpacking Your

K-Series

Amplifier....................... 4

Features................................................................ 5

Quick Start ............................................................ 6

1 Welcome ............................................................ 10

2 Very Detailed Install ............................................ 14

3 Operation............................................................ 21

4 Other Issues........................................................ 25

5 Specifications ..................................................... 29

6 Service ............................................................... 34

Illustrations

Typical Stereo Hookup .......................................... 7

1.1 The

K-Series

Amplifier ................................... 10-11

1.2 The Big Picture: Controls, Indicators and

Connectors ................................................... 12-13

2.1 Mounting Dimensions ......................................... 14

2.2 Mono Mode Switches ......................................... 15

2.3 Input Sensitivity Switch ....................................... 15

2.4 Typical Input Wiring ............................................ 16

2.5 Stereo Output Wiring ........................................... 17

2.6 Bridge Mono Output Wiring ................................ 18

2.7 Stereo Hookup .................................................... 19

2.8 Bridged-Mono Output Hookup............................ 19

2.9 “Y” Mono Input Hookup ...................................... 20

2.10 “Y” Mono Input / Bridged Output ......................... 20

3.1 Front Panel Indicators & Controls........................ 21

3.2 Back Panel Controls ........................................... 23

3.3 Back Panel Fuse Location .................................. 24

4.1 Balanced & Unbalanced Input Wiring ................ 26

4.2 Balanced Input Wiring ........................................ 27

4.3 Unbalanced Input Wiring.................................... 28

5.1 Awesome Frequency (Amplitude) Response ..... 33

5.2 Superior Damping Factor.................................... 33

Page 10

K-Series BalancedCurrentAmplifier™

Thank you for choosing Crown! Mick and his team of enthusi-

astic engineers have worked long hours to craft a totally new

kind of amplifier—the

K-Series.

These are the first Balanced

CurrentAmplifier™(BCA™),andweare all very proud tohave

invented them. Our Balanced Current Amplifier makes use of

a special type of circuitry which allows high levels of power

output without all of the associated heat you find in a conven-

tional amplifier. And that’s very good news for you!

How high is the power output? The

amplifier produces an

impressive 1,500 watts and weighs only 32 pounds, while the

produces a whopping 2,500 watts while weighing only 38

pounds; both without using a cooling fan!* Of course, the ab-

sence of a cooling fan means your amp runs quieter (no fan

noise) and cleaner (no need for filters) and requires very little

maintenance (we

thought

you’d like that).

* 1,500 watts and 2,500 watts total from both channels (for the

and

respectively; 750 and 1,250 watts per channel). See the Specifications

section for details.

1 Welcome

BALANCED CURRENT AMPLIFIER

BALANCED CURRENT AMPLIFIERBALANCED CURRENT AMPLIFIERBALANCED CURRENT AMPLIFIER

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