Related Manuals for Mark Levinson N28
Summary of Contents for Mark Levinson N28
- Page 1 Operating Manual Mark Levinson ® Nº28 Preamplifier Madrigal Audio Laboratories, Inc.
- Page 2 WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE.
-
Page 3: Important Safety Instructions
8. NEVER block air flow through ventilation slots or heatsinks. 9. NEVER bypass any fuse. 10. NEVER replace any fuse with a value or type other than those specified. 11. NEVER attempt to repair this product. If a problem occurs, contact your Mark Levinson ® retailer. - Page 4 From all of us at Madrigal Audio Laboratories, thank you for choosing the Mark Levinson ® Nº28 Preamplifier. A great deal of effort went into the design and construction of this precision device. Used properly, it will give you many years of enjoyment.
-
Page 5: Table Of Contents
Table of contents Front panel ....................1 Rear panel ....................2 Unpacking and placement ............... 4 Unpacking ....................4 Placement ..................... 4 Ventilation ....................4 Voltage selection ..................5 PLS-228 bottom-panel label ............5 Set-up and installation ................6 Connectors and cables ............... 6 Internal adjustments: line gain ............. -
Page 6: Front Panel
PHONO/ TUNER AUX 1 MADRIGAL AUDIO LABORATORIES AUX 2 TAPE 1 TAPE 1 INPUT AUX 3 TAPE 2 Nº 28 TAPE 2 DEFEAT MONITOR PREAMPLIFIER INPUT SELECTOR MONITOR SELECTOR RECORD SELECTOR OUTPUT LEVEL Front panel INPUT SELECTOR Selects one of the seven inputs: CD, TUNER, PHONO/AUX 1, AUX 2, AUX 3, TAPE 1, or TAPE 2. -
Page 7: Rear Panel
OUTPUTS INPUTS BALANCED MAIN POWER AUX 2 SUPPLY RIGHT LEFT RIGHT LEFT RIGHT LEFT INPUT LEFT PUSH PUSH PUSH PUSH RIGHT Rear panel PRECAUTION Disconnect all associated equipment from the AC mains BEFORE making any signal connections and applying power to the Nº28. Note: All left-channel RCA-type inputs and outputs are at the top of the rear panel, and all right-channel RCA-type inputs and outputs are at the bottom of the rear panel. - Page 8 Refer to the operating manual of your balanced-output line-level source to verify that the pin assignments of its output connector correspond to the Nº28. If not, wire the cable so that the appropriate output pin connects to the equivalent input pin. Note: If you won't be using the Nº28's balanced inputs and need more single-ended inputs, it's possible to fabricate a cable to connect line-level sources with single-ended output...
-
Page 9: Unpacking And Placement
Placement Carefully inspect the product for damage and flaws. If you find any, see your Mark Levinson dealer immediately. Place the Nº28 as close as possible to the source equipment, thus keeping interconnect cabling as short as possible. It may be placed on a shelf or in a cabinet where it's convenient to operate. -
Page 10: Voltage Selection
SERIAL NO. DESIGNED AND MANUFACTURED IN U.S.A. BY MADRIGAL AUDIO LABORATORIES INC. If the voltage indicated is incorrect, see your Mark Levinson dealer. If you wish to change the AC operating voltage of the Nº28/PLS-228, see your Mark Levinson dealer. -
Page 11: Set-Up And Installation
When connecting the Nº28 to source equipment and power amplifiers, we recommend Madrigal Audio Laboratories HPC Interconnect Cable. HPC is available in various lengths, terminated with RCA, XLR, and Camac connectors. See your Mark Levinson dealer for more information. Internal adjustments: The Nº28 offers internal gain adjustment of the line amplifiers, in 6dB... -
Page 12: Internal Adjustments: Cartridge Loading
R = 1/ (1/RD - X) RD = Desired Resistance in ohms X = 0.00002 for Low-gain Phono Option, 0.0001 for High-gain Phono Option Note: We recommend precision metal-film resistors; see your Mark Levinson dealer. -
Page 13: Internal Adjustments: Varying The Input Capacitance
= Preamplifier inherent shunt capacitance (Low-gain phono option = 100pf; high-gain phono option = 1000pf) Note: We recommend high-quality polypropylene, polystyrene or Teflon capacitors; see your Mark Levinson dealer. Making the internal 1. Make sure all associated equipment is disconnected from the AC mains, and that the PLS-228 is disconnected from the AC mains. -
Page 14: Power Connection And System Activation
Power connection and Be sure all associated equipment is disconnected from the AC mains. system activation After making all signal connections and internal adjustments, connect the ten-pin DC cable from the rear panel of the PLS-228 to the connector on the rear panel of the Nº28. Connect the AC cord to the male IEC connector on the rear panel of the PLS-228, then connect the AC cord to the AC mains. -
Page 15: Care And Maintenance
Care and maintenance To remove dust from the cabinet of the Nº28, use a feather duster. To remove dirt and fingerprints, we recommend isopropyl alcohol and a soft cloth. -
Page 16: Specifications
Telephone (203) 346-0896 (FAX (203) 346-1540 If purchased in North America, this Mark Levinson product’s warranty is owner-transferable. Warranty conditions are valid only in the country where the product was originally purchased. For warranty information and conditions on products purchased outside of North America,... -
Page 17: Dimensions
Dimensions 3/8" (9.5) 1/8" (3.2) Dimensions, Nº28, top view 1" (25.4) 3/4" dia. (19.1) 17-17/64" (438.6) 15-17/64" 17-1/2" (387.8) (444.5) 1-1/2" 7-1/2" (38.1) (190.5) 10-7/8" (276.3) Dimensions, Nº28, side view 2-9/16" 2-3/4" (65.1) (69.9) 7/16" 7/64" (11.1) (2.5) -
Page 18: Dimensions, Pls-228, Top View
3/8" (9.5) 3/16" (4.8) Dimensions, PLS-228, 1-15/64" (31.4) top view 3/4" dia. (19.1) 8-3/16" (208.0) 8-35/64" 5-3/4" (217.1) (146.1) 1-55/64" 9-1/16" (47.2) (230.2) 13-1/8" (333.4) Dimensions, PLS-228, side view 2-39/64" 2-3/4" (66.3) (69.9) 7/16" 5/64" (11.1) (2.0) - Page 19 MADRIGAL AUDIO LABORATORIES 2081 South Main Street, P.O. Box 781 Middletown, Connecticut 06457 USA Telephone: (203) 346-0896 Fax: (203) 346-1540 ® is a registered trademark of Madrigal Audio Laboratories, Inc. ©1993 Madrigal Audio Laboratories, Inc. All rights reserved. 630080-2 Printed in U.S.A.