Instruction/ maintenance manual of the product KAV2250 Krell Industries
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Instructions for Use Owner ’ s Reference THE LEADER IN AUDIO ENGINEERING KA V–2250 Stereo Power Amplifier KA V–3250 Three-channel Power Amplifier.
KA V–2250 Stereo Power Amplifier KA V– 3250 Three- channel Power Amplifier Instructions for Use v 01.2 Krell Industries, Inc. 45 Connair Road Orange, CT 06477-3650 USA TEL 203-799-9954 F AX 203-891-2028 E-MAIL krell@krellonline.com WEBSITE http://www .
Krell KAV–2250 and KAV–3250 iii Contents Page INTRODUCTION 1 DEFINITION OF TERMS 2 UNPACKING 4 PLACEMENT 5 AC Power Guidelines 5 FRONT PANEL DESCRIPTION 7 BACK PANEL DESCRIPTION 9 CONNECTING THE A.
iv Krell KAV–2250 and KAV–3250 Illustrations Page FIGURE 1 The KAV–2250 Front Panel 6 FIGURE 2 The KAV–3250 Front Panel 6 FIGURE 3 The KAV–2250 Back Panel 8 FIGURE 4 The KAV–3250 Back Pane.
Krell KAV–2250 and KAV–3250 1 Introduction Thank you for your purchase of the Krell KAV–2250 Stereo Power Amplifier or the KAV– 3250 Three-channel Power Amplifier. The KAV–2250 and KAV–3250 amplifiers provide substantial two- and three-channel output power that delivers realistic music reproduction at an exceptional value.
2 Krell KAV–2250 and KAV–3250 Definition of Terms Following are the definitions of key terms used in your owner’s reference manual. CONFIGURATIONS Bridging A method of linking two amplifier channels by distributing the speaker load between the positive binding posts.
Krell KAV–2250 and KAV–3250 3 Definition of Terms, continued OPERATION Off When the back panel power switch is in the down (off) position and the red stand-by LED turns off, the component is off.
4 Krell KAV–2250 and KAV–3250 Unpacking 1. Open the shipping box and remove the top layer of foam. You see these items: 1 amplifier unit (packed in foam end-caps) 1 IEC connector (AC power) cord 1.
Krell KAV–2250 and KAV–3250 5 Placement Before you integrate your new amplifier into your system, please review the following guidelines to choose the location for the component.
KA V – 2250 13 2 6 Krell KA V–2250 and KA V–3250 Figure 1 The KA V–2250 Front Panel Figure 2 The KA V–3250 Front Panel KA V –3250 13 2 1 Power Button 2 Stand-by LED 3 Power Indicator.
Krell KAV–2250 and KAV–3250 7 Front Panel Description See Figures 1 and 2 on page 6 The front panel on the KAV–2250 and the KAV–3250 provides power on and indicates operating status.
KA V–2250 T wo-channel Power Amplifier KRELL INDUSTRIES, INC. 45 CONNAIR ROAD ORANGE, CT 06477-3650 USA MADE IN USA NO USER SERVICEABLE PARTS INSIDE 12VDC 30 mA max.
Krell KAV–2250 and KAV–3250 9 Back Panel Description See Figures 3 and 4 on page 8 The back panel on the KAV–2250 and the KAV–3250 provides connections for all inputs and outputs, remote connection input and output links, and the AC power supply.
10 Krell KAV–2250 and KAV–3250 Back Panel Description, continued Fuses 10 AGC-12 Fuses The AGC-12 Amp loudspeaker fuses protect the amplifier against short circuits at the amplifier outputs.
Krell KAV–2250 and KAV–3250 11 Connecting the Amplifier to Your System INPUT AND OUTPUT CONNECTIONS The amplifier is equipped with balanced and single-ended inputs.
12 Krell KAV–2250 and KAV–3250 Connecting the Amplifier, continued 4. Connect the loudspeaker cables to the amplifier channel output binding posts located on the back panel, (8) on the KAV–2250 or (9) on the KAV–3250. The binding post terminals accept spade lugs, bare wire, or pins.
Krell KAV–2250 and KAV–3250 13 Amplifier Operation ON/OFF AND OPERATION When powering up your system, turn amplifiers on last. When powering down your system, turn amplifiers off first. The procedures for amplifier operation follow. 1. Plug the AC power cord into the AC power wall receptacle.
14 Krell KAV–2250 and KAV–3250 Troubleshooting System Noise When you mix and match high-performance audio components, each with its own ground potential, a low frequency hum may occur in one or all loudspeakers. If this happens when you place the amplifier into your system, follow these simple troubleshooting steps: 1.
Krell KAV–2250 and KAV–3250 15 Reconfiguration Options for the KAV–2250 and KAV–3250 There are a number of options for reconfiguring the amplifier output: Multi Amp Throughput (MAT) is an inte.
Figure 5 Amplifier Factory Default Settings 1 2 O N 1 2 O N 1 S3 S1 Bridge Channel 1 Input Channel 2 Input MT1 J5 J6 S2 Input Circuit Board 3 1 2 O N 3 1 2 O N 3 1 2 O N 1 S4 S1 Bridge Channel 1 Input.
Figure 6 Reconfiguring the KA V–2250 for MA T Operation 1 2 O N 1 2 O N 1 S3 S1 Bridge Channel 1 Input Channel 2 Input MT1 J5 J6 S2 Input Circuit Board Figure 7 Reconfiguring the KA V–3250 for MA .
18 Krell KAV–2250 and KAV–3250 Reconfiguration Options, continued Accessing the Input Switch Banks, continued 6. Reconfigure your amplifier, using the scenarios described below. 7. After the component is configured, replace the cover and, using the T-15 Torx wrench, secure all 12 cover screws.
Krell KAV–2250 and KAV–3250 19 Reconfiguration Options, continued Reconfiguring the KAV–2250 for MAT: Send One Input Signal to Both Output Channels via Input 2 Not illustrated To send the signal from a source device connected to input 2: 1. Push switch 2 up (on) for both input switch banks.
Figure 8 Reconfiguring the KA V–2250 for Bridged Operation 1 2 O N 1 2 O N 1 S3 S1 Bridge Channel 1 Input Channel 2 Input MT1 J5 J6 S2 Input Circuit Board Figure 9 Reconfiguring the KA V–3250 for .
Krell KAV–2250 and KAV–3250 21 Reconfiguration Options, continued Connecting the Amplifier Reconfigured for MAT 1. Connect the cable from your source device to the balanced or single-ended input you have selected to receive the signal. (For example, if you use the switch settings shown in Figure 6 your source device is connected to input 1.
+ – + – + – + + + Kitchen (R) P atio (R) Gym (R) + + + + – + – + – Kitchen (L) P atio (L) Gym (L) –– – –– – Left Amplifier Right Amplifier Left Speakers Right Speakers 22 Krell.
Krell KAV–2250 and KAV–3250 23 Questions and Answers Q. Should I turn the amplifier off when not playing music? A. No. Leave the amplifier in stand-by when not playing music. The stand-by mode avoids cold starts as well as minimizes heat output and power consumption.
24 Krell KA V–2250 and KA V–3250 W arranty This Krell product has a limited warranty of five years for parts and labor on circuitry . Should this product fail to per- form at any time during the warranty , Krell will repair it at no cost to the owner , except as set forth in this warranty .
Return Authorization Procedure If you believe there is a problem with your component, please contact your dealer , dis- tributor , or the Krell factory to discuss the problem before you return the component for repair .
26 Krell KAV–2250 and KAV–3250 Specifications KAV–2250 FREQUENCY 20 Hz to 20 kHz +0 dB, -0.09 dB RESPONSE 0.25 Hz to 170 kHz +0 dB, -3 dB SIGNAL TO NOISE RATIO “A” WEIGHTED >112 dB TOTAL HARMONIC 1 kHz < 0.03% DISTORTION (THD) 20 kHz < 0.
Krell KAV–2250 and KAV–3250 27 Specifications KAV–3250 FREQUENCY 20 Hz to 20 kHz +0 dB, -0.09 dB RESPONSE 0.25 Hz to 170 kHz +0 dB, -3 dB SIGNAL TO NOISE RATIO “A” WEIGHTED >112 dB TOTAL HARMONIC 1 kHz < 0.03% DISTORTION (THD) 20 kHz < 0.
KA V–2250 Stereo Power Amplifier KA V–3250 Three-channel Power Amplifier v 01.2 Krell Industries, Inc. 45 Connair Road Orange, CT 06477-3650 USA TEL 203-799-9954 F AX 203-891-2028 E-MAIL krell@krellonline.
An important point after buying a device Krell Industries KAV2250 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Krell Industries KAV2250 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Krell Industries KAV2250 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Krell Industries KAV2250 you will learn all the available features of the product, as well as information on its operation. The information that you get Krell Industries KAV2250 will certainly help you make a decision on the purchase.
If you already are a holder of Krell Industries KAV2250, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Krell Industries KAV2250.
However, one of the most important roles played by the user manual is to help in solving problems with Krell Industries KAV2250. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Krell Industries KAV2250 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
