Peavey Classic 50/50 Operating Manual

CLASSIC”

SO/50

ALL TUBE POWER AMP

A

Intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure
that may be of sufficient magnitude to constitute a risk of electric shock to persons.

A

Intended to alert the user to the presence of important operating and maintenance (servicing) instruc­tions in the literature accompanying the product.

CAUTION Risks of electrical shock - DO NOT OPEN
CAUTION To reduce the risk of electric shock, do not remove cover. No user serviceable parts inside. Refer

Servicing to qualified service personnel.

WARNING

To prevent electrical shock or fire hazard, do not expose this appliance to rain or moisture. Before

using this appliance, read the operating guide for further warnings.

IA

Este simbolo tiene el proposito de alertar al usuario de la presencia de instrucciones importantes
sobre la operaci6n y mantenimiento en la literatura que viene con el producto.

A

Este simbolo tiene el proposito de alertar al usuario de la presencia de “(voltaje) peligroso” que no
tiene aislamiento dentro de la caja de1 product0 que puede tener una magnitud suficiente coma

para

constituir riesgo de corrientazo.

PRECAUCION Riesgo de corrientazo - No abra.
PRECAUCION

Para

disminuir el riesgo de corrientazo, no

abra

la cubierta. No hay piezas adentro que el usuario

pueda reparar. Deje

todo

mantenimiento a 10s tecnicos calificados.

ADVERTENCIA

Para

evitar corrientazos o peligro de incendio, no deje expuesto a la lluvia o humedad este aparato.

Antes de usar este aparato, lea mas advertencias en la guia de

operation.

A

Ce symbole est utilise pour indiquer a l’utilisateur qu’il ou qu’elle trouvera d’importantes instructions
sur l’utilisation et l’entretien (service) de l’appareil dans la litterature accompagnant le produit.

A

Ce symbole est

utilize’

pour indiquer a l’utilisateur la presence a l’interieur de ce produit de tension non-

isolee

dangereuse pouvant

etre

d’intensite suffisante pour constituer un risque de choc electrique.

ATTENTION Risques de choc electrique - NE PAS OUVRIR!
ATTENTION

Afin

de reduire le risque de choc electrique, ne pas enlever le couvercle. 11 ne se trouve a l’interieur

aucune piece pouvant

etre reparee

par l’utilisateur. Confier l’entretien a un personnel

qualifie.

AVERTISSEMENT

Afin

de prevenir les risques de decharge electrique ou de feu, n’exposez pas cet appareil

a la pluie ou a l’humidite. Avant d’utiliser cet appareil, liscz les avertissements supplementaires

situ&

dans le

guide d’utilisation.

A

Dieses Symbol sol1 den Benutzer auf wichtige Instruktionen in der Bedienungsanleitung aufmerksam
machen, die Handhabung und Wartung des Produkts betreffen.

A

Dieses Symbol sol1 den Anwender vor unisolierten gefahrlichen Spannungen innerhalb des Gehauses
warnen, die von Ausreichender

Starke

sind, urn einen elektrischen Schlag verursachen zu

kiinnen.

VORSICHT Risiko - Elektrischer Schlag! Nicht

offnen!

VORSICHT

Urn das Risiko eines elektrischen Schlages zu vermeiden, nicht die Abdeckung enfernen. Es befinden

sich keine Teile darin, die vom Anwender repariert werden

konnten.

Reparaturen nur von qualifiziertem Fachper-

sonal durchfiihren lassen.

ACHTUNG

Urn einen elektrischen Schlag oder Feuergefahr zu vermeiden, sollte dieses Gerat nicht dem Regen

oder Feuchtigkeit ausgesetzt werden. Vor Inbetriebnahme unbedingt die Bedienungsanleitung lesen.

2

7 8 9

10

11

12

3

51

POWER SWITCH (1)

Depress the switch to the “On” position. The red pilot light (LED) will illuminate indicating power is being
supplied to the unit.

POWER LED (2)

Illuminates when AC power is being supplied to the amp.

CHANNEL 1 STANDBY SWITCH (3)

Allows channel 1 of amp to be placed in standby or active mode. In standby mode the tubes remain hot,
but the amplifier is not operational.

CHANNEL 1 STANDBY LED (4)

Illuminates when amp is on. Does not illuminate when on standby.

CHANNEL 2 STANDYBY SWITCH (5)

Allows channel 2 of amp to be placed in standby or active mode. In standby mode the tubes remain hot,
but the amplifier is not operational.

CHANNEL 2 STANDBY LED (6)

Illuminates when amp is on. Does not illuminate when on standby.

CHANNEL 1 LEVEL CONTROL (7)

Controls the output level of channel 1 when in stereo; controls the output in mono mode. Maximum output
level is obtained with the level control rotated fully in a clockwise direction.

RESONANCE CHANNEL 1 (8)

Used to fine tune speaker enclosure low frequency response by varying the damping factor of channel 1 at
low frequencies.

PRESENCE CHANNEL 1 (9)

Used to fine tune speaker enclosure high frequency response by varying the damping factor of channel 1 at
high frequencies.

CHANNEL 2 LEVEL CONTROL (10)

Controls the output level of channel 2 when in stereo mode. Maximum output level is obtained with the level
control rotated fully in a clockwise direction.

NOTE: Not operational when in mono mode.

RESONANCE CHANNEL 2 (11)

Used to fine tune speaker enclosure low frequency response by varying the damping factor of channel 2 at
low frequencies.

NOTE: Not operational in mono mode.
PRESENCE CHANNEL 2

(12)

Used to fine tune speaker enclosure high frequency response by varying the damping factor of channel 2 at
high frequencies.

NOTE: Not operational in mono mode.

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SPEAKER OUTPUTS CHANNEL 1 (13)

Two

r/4 ”

speaker outputs are provided. These jacks are in parallel. The impedance switch for channel 1 selects

the total impedance plugged into the channel 1 output.

NOTE: When switch (mono/stereo) is switched to stereo use the numbers 16, 8, and 4 that are above the

channel 1 impedance switch.
When switch (mono/stereo) is switched to mono use the numbers 8, 4, and 2 that are below the channel 1

impedance switch.

SPEAKER OUTPUTS CHANNEL 2 (14)

Two

‘/4 fl

speaker outputs are provided. These jacks are in parallel. The impedance switch for channel 2 selects

the total impedance plugged into the channel 2 output.

NOTE: Not used for mono operation.
IMPEDANCE SELECTOR CHANNEL 1 (l5)

Used to select the impedance for the speaker cabinet bemg used.

NOTE: 4, 8, and 16 ohms are for stereo mode.

2,4,

and 8 ohms are for mono mode (see mono/stereo switch).

IMPEDANCE SELECTOR CHANNEL 2 (16)

Used to select the impedance for the speaker cabinet being used. 4, 8, and 16 ohms are for stereo mode.

MONO/STEREO SWITCH (17)

Used to select mono or stereo operation of the amplifier.

NOTE: When in mono mode, only channel 1 inputs, outputs, and controls will function. Use channel 1 im-

pedance selector, level, presence, resonance, and line out controls. Make sure BOTH standby switches are
on (both green LED’s are illuminated).

When in stereo mode channel 1 and channel 2 may be operated independently.

LINE OUTPUT LEVEL CHANNEL 1 (18)

Controls the signal level at the line output jack. This control may be used as a balance control when slave
power amp/speaker systems are driven from the line output.

4

LINE OUTPUT LEVEL CHANNEL 2

(l!9)

Controls the signal level at the line output jack. This control may be used as a balance control when slave
power amp/speaker systems are driven from the line output.

LINE OUTPUT CHANNEL 1 (20)

The line output provides a signal with level control to drive other power amplifier/slave speaker systems.
(See Line Output Level)

LINE OUTPUT CHANNEL 2 (21)

The line output provides a signal with level control to drive other power amplifier/slave speaker systems.
(See Line Output Level)

DIRECT OUT CHANNEL 1 (22)

Provides 600 ohm, transformer balanced signal to be used as “direct” patch into mixing consoles, tape recorders,
etc. The signal at this point has been frequency compensated for low noise operation.

DIRECT OUT CHANNEL 2 (23)

Provides 600 ohm, transformer balanced signal to be used as “direct” patch into mixing consoles, tape recorders,
etc. The signal at this point has been frequency compensated for low noise operation.

INPUTS CHANNEL 1 (24)

Unbalanced

l/4 “

phone jacks are in parallel. Used to connect line level signal to the power amplifier.

INPUTS CHANNEL 2 (25)

Unbalanced % II phone jacks are in parallel. Used to connect line level signal to the power amplifier.

GROUND SWITCH (26)

Three position rocker-type switch which, in most applications, should be operated in its center or zero posi­tion. There may be some situations when audible hum and/or noise will come from the loudspeaker. If this
situation arises, position the ground switch to either positive or negative ( + or -) or until the noise is minimized.

NOTE: Should the noise problem continue, consult your Authorized Peavey Dealer, the Peavey Factory, or

a qualified service technician. THE GROUND SWITCH IS NOT FUNCTIONAL ON 220/240 VOLT
MODELS.

LINE CORD

(l2OV

PRODUCTS ONLY) (27)

For your safety, we have incorporated a 3-wire line (mains) cable with proper grounding facilities. It is not
advisable to remove the ground pin under any circumstances. If it is necessary to use the equipment without
proper grounding facilities, suitable grounding adaptors should be used. Less noise and greatly reduced shock
hazard exists when the unit is operated with the proper grounded receptacles.

FUSE (28)

The fuse is located within the cap of the fuseholder. If the fuse should fail, IT MUST BE REPLACED WITH
THE SAME TYPE AND VALUE IN ORDER TO AVOID DAMAGE TO THE EQUIPMENT AND TO PRE­VENT VOIDING THE WARRANTY. If the amp repeatedly blows fuses, it should be taken to a qualified
service center for repair.

WARNING: THE FUSE SHOULD ONLY BE REPLACED WHEN THE POWER CORD HAS BEEN

DISCONNECTED FROM ITS POWER SOURCE.

SPECIFICATIONS

Rated Power:

50 W RMS into 4, 8 and 16
ohms, both channels driven

100 W RMS into 4, 8, and 16
ohms, mono
(Continuous sine wave with less
than 5% THD, 40 Hz to 20

kHz, 120 V AC)

55 W RMS into 4, 8, and 16
ohms per channel, one side

driven

Power @ Clipping (Typically):

50 W RMS into 4, 8, and 16
ohms

(Continuous sine wave with less
than 5% THD, 40 Hz to 20

kHz,

120 V AC)

Frequency Response:

+0, -2dB @ 50 W RMS into 4,

8, and 16 ohms, 40 Hz to

20

kHz

Hum & Noise:

80 dB below full rated power (10
Hz to 30

kHz,

unweighted)

Input:

Input impedance, 250K ohms
Minimum input level: 1 V RMS,
0

dBV

Direct Output:

Output Impedance: 270 ohms
Nominal Output Level: 0.3 V
RMS, -10

dBV

transformer

balanced

Line Output:

Output Impedance:

10k

ohms
Maximum Output Level: 30 V
RMS, 29.5

dBV

6