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Krell Industries KST100 manual

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Table of contents for the manual

  • Page 1

    [...]

  • Page 2

    A, INTRODUCTION Thank you for your purchase of the KRELL KST-100 poweramplifier. This amplifier represents the latest evolution ~n amplifier technology and incorporates many innovative design features. To obtain the best performance from. your KST-100, careful attention sfiould be paid to placement, installation and operation. A thorough understand[...]

  • Page 3

    TABLE OF CONTENTS 4 UNPACKING AND ASSEMBLY 5 BASIC INSTALLATION AND OPERATION 6 INPUT AND OUTPUT CONNECTIONS 8 AMPLIFIER OPERATION 9 PROTECTION CIRCUITRY 10 MONAURAL CONVERSION OPERATION 11 REAR PANEL DESCRIPTIONS 12 QUESTIONS AND ANSWERS 14 SPECIFICATIONS 15 WARRANTY AND SERVICE INFORMATION 3[...]

  • Page 4

    B. UNPACKING AND ASSEMBLY NOTE: Do to the weight of the KST-100 it is s.trongly advised that unpacking and placement is completed by at least two individuals. 1. Open the box on one end. 2. Fold back the flaps on all four sides of the box and carefully roll it over on to the exposed end. 3. Pull the box straight up and off exposing the foam packing[...]

  • Page 5

    C. BASIC INSTALLATION AND OPERATION 1. Place the KST-100 on a firm level surface away from excessive dirt or moisture. Ideally the amplifier should be placed as close to. the speakers as possible. It is always preferable to run long_ interconnect cables to the amplifier and keep speaker calSle length to.a minimum= Speal~er cable does add an impedan[...]

  • Page 6

    D. INPUT AND OUTPUT CONNECTIONS CAUTION: When making connections to this component or any other, make sure the power amplifier is OFF and the preamplifier is in the MUTE or STANDBY mode. 1. Connect the speaker cables .to. the output terminals of the amplifier. Tile KS~T-100 utilizes two sets of parallel 5-w~y binding posts tor the left and right ch[...]

  • Page 7

    Thepin assignment for the XLR is: pin _1-= shield (ground) . p!n 2 = non-inverting ~nput (hot) p~n 3 - inverting input NOTE: The RCA center conductor for each channel is wiredjn, parallel with pin 2, the non-inv.erted input. Only one ot tlaese inputs should be connectecl to a preamplifier. 3. Insert the AC power cord into the receptacle located on [...]

  • Page 8

    Eo AMPLIFIER OPERATION 1. Push the black breaker type switc.h on the front of the amplifier to turn it on. The LED in the switch will illumi- nate. When turning on the system, the a _m, plifier should always be last. Upon turn-on, the amplifier s outputs are not connectedto the speakers. After the protection circuits have determined that the unit h[...]

  • Page 9

    E PROTECTION CIRCUITRY There are no fuses in the KST-100. The amplifier is protected by a series of non-intrusive, opto-c_o, upled circuits that constantly evaluate the amplifier s operation. Appropriate protective action exists for DC conditions, short circuit, oscillation, AC power anomalies, high ground resistance and out-of:phase ground. Collec[...]

  • Page 10

    G. MONAURAL CONVERSION AND OPERATION The KST-100 can be easily cgnverted into a 400 watt monaural amplifier. To switcla the amplifier to mono follow these instructions. 1. Remove the topcover from the amplifier via 8 topcover screws. 2. Find the toggle switch located at the rear of the ampli- fier mounted on the circuitboard.. Mo.ve the toggle swit[...]

  • Page 11

    H. REAR PANEL DESCRIPTIONS INPUTS: Balanced via 3 pin XLR connector Single ended via RCA connector XLR PIN CONFIGURATION p!n 1 Shield (ground) p!n 2 Non-inverting or 0 degrees (hot) p~n 3 Inverting or 1-80 degrees OUTPUT: Two pairs of five-way binding posts in parallel, per channel OTHER: Standard AC receptacle 20 amp circuit breaker type power swi[...]

  • Page 12

    I. OUESTIONS AND ANSWERS Q. Should I leave the KST-100 ON at all times? A. Althou.gh you could leave the KST-100 ON at all times without fear of damage to the amplifier, we recom- mend 30 minutes of warm-up_ before critical listening and switching the amplifier off when not in use. ~ . When I push the power switch on the front of the ST-100, the am[...]

  • Page 13

    Q. After the amplifier is playing for about one hour it becomes very hot. Is this normal? A. Yes. Due to the design of the KST-100 it will become quite warm when driven hard. If the amplifier should have a severe temperature inbalance between the left and fight channel, unplug the unit and call your authorized dealer or Krell. Q. I tried a ne.w. pr[...]

  • Page 14

    ¯ I. SPECIFICATIONS KST-100 GAIN 26dB, SIGNAL-TO-NOISE 102dB unweighted THD 1K at 8 ohms less than. 1% 20K at 8 ohms less than .3% INPUT IMPEDANCE 47,000 ohms(47K) INPUT SENSITIVITY 1.5 volts for 100 watts out OUTPUT IMPEDANCE ¯ 1 ohms OUTPUT VOLTAGE 80 volts peak to peak 8 ohms OUTPUT POWER All readings are continuous output power, per channel o[...]

  • Page 15

    K. WARRANTY AND SERVICE INFORMATION There are no user-serviceable parts inside the KST-100. The KST-100 has a limited warranty of .five years parts and labor. Return freight is includedin the warranty.. The warranty, pe~od, begins on ~the date of purchase and is activated witla the return ot the enclosed Warranty Card and a copy of the Sales receip[...]

  • Page 16

    45 CONNAIR RD ORANGE, CT 06477 SALES 203-799-9954 FAX 203-799-9796[...]