Krell MD-20 Owners manual

MD-20 OWNER’S REFERENCE

A. INTRODUCTION

Congratulations on your purchase of the MD-20 CD
turntable and welcome to the KRELL family of audio

components. You have joined a select group of listeners
who enjoy only the finest in music reproduction.

We are dedicated to the~ development of technologically
advanced components tor the reproduction o,f diglt~ly

recorded music and continuing the Krell tradition ot
uncompromised performance through leading-edge tecla­nology.

This Owner’s Reference is divided into several sections,
each designed to perform a different function. Basic

installation, operation and a Question and Answer section
are included, where answers to common questions are

provided. Should you have any questions or suggestipns,
i~lease feel free to contact your authorized dealer or tlae

KRELL staff for assistance.
In the unlikely, event that your.MD-20 should require

service you will be pleased~ to ~now that it is backed by a
c.omprehensive Customer batistaction policy and one of

toe most advanced servic.e facilities in the industry. For
detailed information on the terms and conditions of ser-

vice please consult your warra,nty registration card or
your authorized KRELL Distributor.

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B. TABLE OF CONTENTS

3

UNPACKING AND ASSEMBLY

4

CUSTOM DUST COVER INSTALLATION

6

BASIC INSTALLATION AND CONNECTIONS

8

OPERATION OF THE CD TRANSPORT
10
11
15
16
18
19

REMOTE CONTROL

TRACK AND FTS PROGRAMMING

MAINTENANCE

QUESTIONS AND ANSWERS

SPECIFICATIONS

WARRANTY AND SERVICE INFORMATION

C. UNPACKING AND ASSEMBLY

1. Open the box and remove the top layer of protective

foam. The following items will now be visibIe:

1 CD Stabilizer
1 AC power cord
1 MD-20RC Remote Control

1 Packet containing the Owner’s Reference and warranty
card
NOTE:If any of these items are not included, please
contact your authorized dealer immediately f6r assis­tance.

2. Remove the layer of foam containing these items and
set it aside for later use. Carefully remove the MD-20
from its box and remove the protective plastic wrap.

NOTE: Save all packing mate.rials. If you must ship your
MD-20 in the future, repack tlae unit in its original pa.ck-

aging to prevent transit damage. If the unit is returnecl to
KRELL for service, please send the cover and the remote
control unit.

CAUTION: If your MD-20 has the Custom cover do not
remove the acrylic dust cover from its protective sleeve

at this time! This cover is extremely delicate and c.an be
permanently scarred if mishandled. Please follow tlae

1.nstructions provided in this Reference after safe installa­tion.

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D. CUSTOM DUST COVER

INSTALLATION

1. Standard Version Smoked Top Cover:

Remove the top cover, in its protective sleeve, from the

s.hipping foam. To prevent s.c.ra.tching, leave tlae protective
sl.eeve on tlae top cover until t~lae cover mounting is com-

plete. T.here are two pairs ot screws .with w~asher-type
receptacles attached to t-he back panel of the unit tor mount-

i.ng the top cover. Center the hinge pins on the top cover ov.er
toe two pairs of screws. Carefully slide the hinges into tlae
.slots formed by the washers. Pusti the cover down evenly on

both sides until it is fully seated. Finally, remove the
protective sleeve.

2. Custom Version Clear Lucite Top Cover:
Remove the top cover from the protective foam and its

protective sleeve. Th. ere are two pairs of.screws with washer­type lainge receptacl.es on the ba.ck of tlae unit. Remove the
four screws from tlae unit and take off the black .hin.ge

receptacles. Carefully place the lucite top cover sucla tlaat
the circular milled-out portion is centered over the trans­port. Align the slots in the cover’s hinge blocks with the
holes in the back of the chassis. Thread the four screws into

the chassis t.hrough the hinge blocks: Tigh. ten dow~n light.ly
and adjust the cover so it is centerec~ on the unit. Once the

cover as aligned, tighten down the supporting screws.
NOTE: The clear lucite cover must be lowered manually, as

it is very heavy and does not have a damping mechanism.

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INSTALLATION OF THE CUSTOM ACRYLIC DUSTCOVER FOR MD-20

MD-20

REMOVEABLE MOLDED COVER

MADE IN U.S.A.
NO U~ER SERVICEABLE PARTS INSIDE

XLR

O

SPECIAL

1. To remove molded cover, slide the cover assembly upward until the hinges are cleared from both sets of

screws and washers.

2. Be sure to save all the screws and washers after disassembly.

E PARTS INSIDE ~ ~ SPECIAL

1.

Remove the four original hinge retaining screws from the back of the unit.

2. Remove the three washers from each screw.

3. Gently place acrylic cover on the chassis top, center the hinges to match the holes in the chassis.

4.

Insert the four screws without washers into the hinge and fasten loosely.

5. Center the cover with the chassis and secure hinge block screws.

CUSTOM ACRYLIC COVER

SEPT.EMBER 1, 1992

E. BASIC INSTALLATION AND

CONNECTIONS

1. Place the unit on a clean, level surface away from

excessive heat, moist,ure or light. Ideally, the MD-20
should be placed on tlae top of an audio component cabi-

net or other "open air" rigid platform.

2. The MD-20 may. be. placed in a cabinet. It will require.

17.0 inches of vertical clearance between the bottom ancl

top shelves for proper operation of the cover.

3. I.f space is limited, the MD-20 can be operated without
its clust cover. Six inches vertical clearance is adequate to

allow convenient access to the disc transport area.

4. The location of the unit should be within 2 meters of
the digital signal processor. If longer distanc, e is re~quired,
we recommend using an AT&T fibre optic clata linl~ o.r an

AES/EBU balanced i:lata link, as they are more suitecl to
long distance runs.

5. Connect the AC power cord to the back of the unit.
Once the power cord is secured, plug the cord into an AC

outlet.

6. Press the POWER button on the front panel. The dis­play will illuminate and the transport willnow be active.

NOTE: While the MD-20 has superb regulation and does
not require a dedicated AC circuit, we strongly advise

against any. connections through extension cords or mul­tiple AC ai:laptors. High quality 15 amp grounded AC
sti-ips are acceptable.

7. Connect the Digital Output from the MD-20 to a Krell
Dig!tal Processor or other compatible digital-to-analog

aualo processor.
The MD-20 is compatible with industry standard Fibre

~Optic, Coaxial RCA, AT&T wide bandwidth Fibre Optic
bl’ type and AES/EBU XLR output connectors.

NOTE: Care should be taken in selecting the type_ of

cable used to lin.k the MD-20 to your processor. We

recommend botla the AT&T Fibre Optic due to its supe­rior bandwidth and, signal isolation properties, and tile
AES/EBU format clue to its higher voltage transmission

and noise rejection due to balanced format.

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