English dropdown-ico

B&K 4420 manual

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

Go to page of

Similar user manuals

A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of B&K 4420, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of B&K 4420 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of B&K 4420. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of B&K 4420 should contain:
- informations concerning technical data of B&K 4420
- name of the manufacturer and a year of construction of the B&K 4420 item
- rules of operation, control and maintenance of the B&K 4420 item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of B&K 4420 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of B&K 4420, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the B&K service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of B&K 4420.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the B&K 4420 item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • Page 1

    B & K Components Ltd. P/N 12692[...]

  • Page 2

    B&K Components, Ltd., 2100 Old Union R oad, Buffalo, New York 14227[...]

  • Page 3

    Page 1 Safety Precautions Page 2 Purpose and function Page 3 Design and constr uction Page 3 Features Page 3 Rear panel v iew Page 4 Rear panel descr iption Page 4 - 5 Control muti ng Pag e 5 - 6 Level contr ols Page 6 Outputs Page 7 Inputs Page 7 - 8 System installation Page 9 Making the connecti on Page 9 - 10 Troubleshooting Page 11 Care and cle[...]

  • Page 4

    Page 2 WA RNING: TO PREVENT FIRE OR SHOCK HA ZA RD, DO NOT EXPOSE THIS UNIT TO RA IN OR MOISTURE. The lightning fl ash with arrowhead, wi thin an equilater al tri angle, is intended to al ert the user of the presence of uninsul ated “dangerous voltage” within the product’ s enclosure that may be suffici ent magnitude to constitute a r isk of [...]

  • Page 5

    Page 3 The Reference 4420 is a compact, v ery efficient, tw o channel power amplifier. It is designed to be used in al l types of audio or audi o/video sy stems. The Reference 4420 utilizes high quality electronic circuitry to achieve an environment wher ein a detailed, transpar ent, and highly musical sound can be realized. The hi gh quality parts[...]

  • Page 6

    Page 4 1. AC fuse holder 5. RCA inputs ( unbalanced) 2. AC Input receptacle 6. Level contr ols ** 3. Speaker outputs 7. Amplifier control muting input/output 4. Balanced inputs 1. A C fuse holder - Holds the AC Line fuse. This fuse is an 12 Amp / 250 Volt Slow Bl ow fuse. Replace w ith same type and value fuse only. 2. A C Input receptacle - For at[...]

  • Page 7

    Page 5 4. Balanced inputs - For connecting bal anced signal patch cabl es (XLR ). Explai ned further on page 8. 5. RCA inputs - For connecting si gnal patch cables ( interconnects) from the preamplifier to the ampl ifier to pass signal . 6. Level controls - For adjusting the i nput level to the ampl ifier. Ex plained further on page 6. 7. A mplifie[...]

  • Page 8

    Page 6 If the control function is desired, each uni t in the system must remai n connected at all times and the control must be enabled. To enabl e the control function, the CTRL ENABLE button must be out for each controllabl e amplifier in the sy stem. For more information on the amplifiers output status under various contr ol conditions, r efer t[...]

  • Page 9

    Page 7 Five w ay binding posts are pr ovided. One pai r for each channel. They ar e designed to accept a banana-type pl ug or spade lug connector (show n below) and are color coded for easy identificati on. The red (+) post should alw ays be connected to the speakers ( +) jack. The black (-) post should always be connected to the speakers (-) jack.[...]

  • Page 10

    Page 8 Balanced - XLR ty pe connectors accept li ne input from the preamplifier’ s balanced output connectors. There ar e two input connector s, one for each channel, that may be used to connect the ampl ifier to the preamplifier . Balanced cable connector - Operation - For balanced operation, ensure the bal anced switch betw een the balanced inp[...]

  • Page 11

    Page 9 There will most like ly be a n umbe r of cable s in volved in the installatio n of your ho m e entertainment sy stem. Pre-planning is essential in order to max imiz e system efficiency. W e recommend the follow ing as a means of helpi ng y ou reach that goal:  Make a diagr am of your proposed sy stem by l aying out the relativ e location [...]

  • Page 12

    Page 10  Connect the audio cables from y our preampli fier’s output to the corresponding input connector on the ampli fier.  Connect the wi res from your speakers to the appropriate output on the ampl ifier. It is absolutely essential that you observ e correct polari ty in these connecti ons.  Double check all connecti ons.  Plug the [...]

  • Page 13

    Page 11 PROBLEM POSSIBLE CA USE POSSIBLE SOLUTION No sound 1. Power cord not plugged in. 1. Reconnect power cord. (‘on’ LED not illuminated) 2. Power off at AC source. 2. Check AC switch or fuse. 3. AC power inlet fuse blown 3. Check for shorts or or faulty. overloading. 4. Control switch in the wrong 4. Place control switch in position. proper[...]

  • Page 14

    Page 12 Power r ating: 8 ohms 225 watts @ 1 kHz 4 ohms 350 watts @ 1 kHz Frequency response 5 Hz - 45 kHz Input sensitiv ity 1.4 Volts THD (S+ N) 0.09 % @ 1 kHz Input impedance 33.2 k ohms Damping factor 450 Current ( peak to peak) 75 Amps Slew r ate 14 V / ) sec Dynami c headroom 1.2 dB S/N (A- weig hted) 95 dB Voltage g ain 28 Line vol tage 120/2[...]

  • Page 15

    Page 13 B&K Components Ltd., referred to herein as B&K, warrant s your B&K equipment against all defects in material and workmanship for a period of five years from the date of purchase. This warranty applies only to t he original purchaser and only to equipment in norm al residential use and service. Defective equipment must be returne[...]

  • Page 16

    B&K Components, Ltd. 2100 Old Union Road Buffalo, New York 14227 716-656-0023 www.bkcomp.com[...]