Lafayette LR 9090 Owners Manual

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Model LR -9090

[Stack Mu. 99-03675W]

AM/ FM
STEREO RECEIVER

DE]

DOLBY SYSTEM

DU AND DOLBY ARE TRADE MARKS OF DOLBY LABORATORIES

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you should then go to the 7 KHz position. Since all high frequency filters have some effect on the
high frequency response in the program material, they should not be used unless disturbing high fre-
quency noises are present.

DOLBY FM SWITCH

When depressed, this button will switch in a DOLBY noise reduction circuit, which, when used with
Dolby-encoded FM broadcasts, will provide reception that is remarkably tree of noise.

Since all Dolby FM broadcasts employ 25 micro-second pre-emphasis [instead of the conventional
75 micro-second pre-emphasis], automatic switching to 25 micro-second de~emphasis also takes
place when the DOLBY FM switch is activated.

The Dolby circuit should not be used with any conventional stereo FM broadcast to provide a
reduction in any noise present. It must be remembered that the Dolby circuit is primarily designed
for use with specially processed broadcasts

NOTE: If you tune in a Dolby-encoded broadcast with the DOLBY FM button off and then
depress the button, a slight reduction of high frequency response may appear to take
place. This is due to the fact that with the Dolby circuit off, a Dolby-encoded program
has a response with emphasis in the high frequencies; switching the Dolby circuit in will
tie-emphasize these high frequencies. Although this may create the illusion of a loss in
the highs, the response is actually being returned to a normal condition.

SPEAKER MODE SWITCH

This switch turns the receiver on and allows you to select one of the five listening modes.

POWER OFF .............. In this position AC power is disconnected from the receiver and
no sound will be heard. AC power is ON in all other positions.

A ..................... -. . . This connects the sound output to the two speakers attached to
the A SPEAKERS output terminals. This position is used when
only two speakers are being used.

B ....................... This connects the sound output only to the set of speakers at-
tached to the B SPEAKERS output terminals.

C ....................... This connects the sound output only to the set of speakers at-
tached to the C SPEAKERS output terminals.

A + B .................... This connects the sound output simultaneously to speakers at-

tached to the A SPEAKERS and B SPEAKERS" output
terminals. The A set of speakers are normally located in your
principal listening area; the B set of speakers usually in a second-
ary area such as a dent

A + C ................ . . . . This connects the sound output simultaneously to speakers at-
tached b0 the A SPEAKERS and C SPEAKERS? output
terminals. The A set of speakers are normally located in your
principal listening area; the C set of speakers usually in another
remote location.

PHONES ................. In this position, all speakers are silenced and the sound output is
connected only to any headphones that are plugged into the

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