Pioneer SPEC-2 Service-Handbuch - Seite 4

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2. FRONT PANEL FACILITIES

P E A K L E V E L M E T E R S

When speaker systems of 8O nominal impedance are con-

nected, these provide direct readout of the output power

in Watts.

NOTE:

Speoher syotem impedance uaries occording to frequency.

To obtoin o preciae medsurcment of the output poue\

remoue Spedher con\ectiotrs ond connect 8a dumtuy

loods ocro4i the SPEAKERS termindls-

POWER SWI CH

S'et to ON to energize the SPEC-2. Output will not be

obtained until the PRoTEcTIoN indicator lamp Soes out.

This effect is due to the internal muting circuit and does

not indicate malfunction.

METER ZERO POINT ADJ USTMENT

PROTECTION INDICATOR

The lamp lights when the protection circuit functions.

lf the lamp stays on during operation, turn off the

POWER switch and check as described in the section

"Protection Circuit Operation". After identifying and

correcting the source of difficulty, if the lamp still fails

to extinguish, contact a Pioneer Authorized Service

Center,

INPUT LEVEL CONTROLS (LEFT & RIGHT)

Adjust LEFT and RIGHT controls according to the

output level (voltage) of the pre-amplifier connected to

the SPEC-2 INPUT (L & R) jacks. Control positions

correspond to 2V at MAX (fully clockwise), 4V at center

of rotation, and d at MIN (fully counter-ciockwise)

Normally set these controls to MAX (2V).

lf the minimum output voltage of the employed pre-

amplifier does not reach 2V. set the controls to MAX

(2V). In this case the effective output indicated in the

specifications will not be obtained (for example 1/4

of the specified output can be attained with a pre-

amplifier output voltage of 1V).