KSP-7B STEREO PREAMPLIFIER OWNER’S MANUAL
45 ConnairRoad Orange,CT06477-0533,USA INTRODUCTION & GENERAL INFORMATION Thank you for purchasing the KRELLKSP-7B Preamplifier. The KSP-7B is the latest evolution of KRELL’s entry level preamplifier technology. Many of its design concepts are similar to our more expensive preamplifiers and are wholly unique to KRELL. Two important design features are dualmono operation (all active stages are powered by independent tracking regulators) and the complete absence of any capacitors in the signal path.
ABOUT THE OWNERS~ MANUAL The KSP-7BOwner’s Manual is divided into various groups of information. The purpose of he document as a whole is to familiarize you with the unit and guide you through its set-up, installation and operation in a logical progression. The Table of Contents is as follows: A. Unpacking B. Phono Section Set-Up C. Installation: 1. Cautions 2. Unit Location Guidelines and Installation 3. Connection of Inputs and Outputs 4. Turn-on of the Preamplifier D. Operation E.
MovingCoil Cartridges:’ The KSP-7Bis shipped with the phono section gain set for moving coil cartridges and a load of 800 ohms. The load can be changed with a set of internal switches. To access these the top cover must be removedwith the supplied allen driver. At the left-rear of the unit there is a two-position toggle switch. In the factory-supplied position the switch lever is towards the rear panel of the unit. If you are using a movingcoil cartridge do not change the switch position.
Co Wheninstalling th’e KSP-7B, always connect the DCcable between the preamplifier chassis and the power supply before plugging the power supply into the ACmains. the AC fromthe mainsbeforedisconnecting the d. Alwaysdisconnect DC cablefromthepreamplifier. e. The KSP-7B Select switch should be in the Mute position and the volume control fully counterclockwise while making connections. Our custom RCAconnectors are made to very exacting standards.
This supply does not’ require that an ACcircuit be dedicated for its use only. It should be connected to a 15 or 20 ampcircuit that is dedicated for the source components and preamplifier. Do not connect this supply to the mains with light-gauge (18 or higher) extension cords or multiple outlet adapters. ACextension cords, outlet strips and good quality surge protectors that are rated for 15 amps and are grounded are acceptable. b.
i. For use with an~plifiers with single-ended (unbalanced) inputs: connect the RCAMain Outputs to the amplifier inputs. This constitutes the conventional hook-up for a single-ended unbalanced system. ii. For use with amplifiers with balanced inputs: connect the XLRMain Outputs to the amplifier inputs. The pin assignments are as follows: 1 = ground, 2 = non-inverted output, 3 = inverted output. Make the connections between the Main Outputs and amplifier(s) crossovers at this time. and/or 4.
Note: Components that are not being listened to should be turned off or have their volume turned down. For instance, a tuner should be turned off or have its volumelowered while it is not being listened to. Use the ~ switch to choose between the output of the ~ switch or the playblack from a tape deck for monitoring. This can be done when a recording is being made, such as with a three-head tape deck, or during playback only.
The KSP-7Bhas a limited warranty of five years from the date of purchase. Please return the completed warranty card immediately after successful installation and operation are completed. The warranty for KRELLproducts is valid in the country to which they were originally shipped and at the factory. If you think there are problems with your unit, please contact your dealer or the factory immediately.
