Marantz PMD510 Operations Instructions download pdf (Page 5)

INTRODUCTION

Thank you for selecting the Marantz Model PMD510 Independent

Double Cassette Deck for your audio system.

Please read these operating instructions carefully. We recommend

that you read the entire user guide before you connect or operate

the unit.

After you have reviewed the contents of this manual, we suggest

that you make all system connections before you attempt to

operate the unit.

Refer to the Figures on pages 4 and 12 of this user guide.

The callout numbers on the Figures correspond to those found in

the text. All references to connections and controls are printed in

BOLD type, as they appear on the unit.

PRECAUTIONS

The following precautions should be taken when operating the

equipment.

GENERAL PRECAUTIONS

When setting the equipment ensure that:

– the ventilation holes are not covered

– air is allowed to circulate freely around the equipment

– the equipmext is on a vibration free surface

– the equipmext will not be exposed to interference from an

external source

– the equipmext will not be exposed to excessive heat, cold,

moisture or dust

– the equipmext will not be exposed to direct sunlight

– the equipmext will not be exposed to electrostatic discharges

• In addition, never place heavy objects on the equipment.

• If a foreign body or water does enter the equipment, contact

your nearest dealer or service center.

• Do not pull out the plug by pulling on the mains lead. Hold the

plug.

Dolby noise reduction and HX Pro headroom extention manufac-

tured under license from Dolby Laboratories Licensing Corpora-

tion. HX Pro originated by Bang & Olufsen.

“DOLBY” the double-D symbol

and “HX PRO” are trademarks

of Dolby Laboratories Licensing Corporation.

FEATURES

• COMPLETELY INDIVIDUAL DUAL SYSTEM

Well A and Well B can be used completely independently for both

recording and playback. There are two sets of inputs and outputs

which allow for many modes of recording and playback. Two

separate input sources can be recorded simultaneously and inde-

pendently on the two decks; two different tapes can be played back

simultaneously and independently on the two decks; and lastly, it

is possible to play a cassette on one well, and record a different

source (such as a mixer) on the other well simultaneously.

There are also several modes in which the two decks work

together.

• CONTINUOUS RECORDING AND PLAYBACK

In the continuous mode, Well A will play (or record) side one,

autoreverse, play (or record) side two, and then automatically

switch to Well B, which will play (or record) side one, autoreverse,

and then play (or record) side two. In this way three hours of

uninterrupted playback or recording is possible using C-90 cas-

settes.

• CASCADE CONNECTION FOR SERIAL CONNECTION

OF MULTIPLE UNITS

By connecting several PMD510s in serial via the cascade connec-

tion, multiple units can play or record continuously for logging and

other long-time recording applications. In this case, Wells A and B

of unit #1 will play (or record) as in the example above, then they

will trigger the start of continuous playback (or record) of unit #2,

and so on.

• PARALLEL RECORDING

When multiple copies of the same source are required, it is

possible to record both Well A and Well B simultaneously, in

parallel, from a single source.

• ALL-OPTICAL AUTOREVERSE AND WELL/UNIT

SWITCHING

All autoreverse, well switching, and unit switching circuits are

optically sensing “quick autoreverse” circuits, to minimize lost

signal while reversing tape, or switching wells or units. This applies

in all playback and record modes, including autoreverse, continu-

ous, and serial cascade modes.

• PITCH CONTROL

Each well features –15% pitch control on playback.

• METERS AND LINEAR TIME TAPE COUNTERS

Each well features independent LED bargraph meters, and linear

time (minutes and seconds) counters. The display on these counters

is only an approximate indication of minutes and seconds. It is most

accurate when using 60 minute tapes.

DOLBY B/C NR SYSTEMS

The Dolby NR (Noise Reduction) systems compress and amplify

signals during recording in order to raise the signal to noise ratio on

the tape. During playback, these signals are expanded and attenu-

ated by the same amount, in order to regain the original dynamic

range of the music. An additional result of this expansion and

attenuation is that the noise floor of the recording is reduced

significantly. Dolby B typically reduces noise by 10 dB, while Dolby

C typically reduces noise by 20 dB.

DOLBY HX PRO HEADROOM EXTENSION

The Dolby HX PRO system monitors the total amount of effective

bias during recording and instantaneously compensates for any

excess bias by reducing the deck’s bias signal level accordingly.

The system operates independently on each channel. HX PRO is

unlike a noise reduction system because it functions only during

recording and no decoding is required. Therefore, a tape recorded

with the HX PRO system can be played back on any other cassette

deck while retaining the benefits of HX PRO.

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Marantz PMD510 Operations Instructions Page 5

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