Carver pm125 Скачать руководство пользователя страница 9

5. CH1 /CH2 LEVEL CONTROLS
These controls are used to adjust the input level of each channel. When the controls are fully clockwise the
amplifier operates at maximum gain. Turning the controls counter-clockwise attenuates the input signal.
The LEVEL controls can be bypassed by moving the jumpers located at J15 and J16, next to the LEVEL
pots on the amplifier’s main circuit board. Plugging the jumper leads into sockets 1 and 2 will bypass the
LEVEL controls, locking the amplifier into full gain (as if the LEVEL pots were fully clockwise).
The depth of the LEVEL controls can be changed by physically removing the pots from the amplifier board
and moving them to a second set of holes in the board. In this way they can either protrude from the chassis
for easy adjustment, or be recessed to protect the controls from inadvertently being moved once they are set.

CAUTION: To avoid the risk of electric shock, refer all internal adjustments to qualified service personnel.

6. CH1 /CH2 INPUT CONNECTORS
These are 1/4-inch TRS (Tip-Ring-Sleeve) phone jacks. They can be used with balanced signals or
unbalanced signals (see Input Wiring on page 9 for more information).

7. STEREO / MONO SWITCH
This switch is used to select between NORMAL STEREO operation, DUAL MONO operation or
BRIDGED MONO operation. For NORMAL STEREO operation, use CH1 and CH2 inputs. For DUAL
MONO or BRIDGED MONO operation, use CH2 input only (see page 10 and page 11 for more
information).

8. CH1 / CH2 SPEAKER OUTPUTS
Multi-way binding posts are used to connect loudspeakers to the amplifier outputs. The red terminals are the
signal connection (+) and the black terminals are the signal return connection (–). The black terminals are
internally tied together and to signal ground.

9. POWER CORD
Connect to a properly configured outlet providing the line voltage specified for your model.

 

 

CAUTION

ATTENTION

RISQUE DE CHOC ELECTRIQUE

NE PAS OUVRIR

RISK OF ELECTRIC SHOCK

DO NOT OPEN

TO REDUCE THE RISK
OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE
THIS EQUIPMENT TO RAIN
OR MOISTURE.

WARNING:

    

      

   

               

120 VAC
50-60 Hz

250 WATTS

 

 

    

      

   

CLASS II WIRING
MAY BE USED.

DUAL

MONO

NORMAL

(STEREO)

BRIDGED

MONO

OFF 0dB

          

OFF 0dB

          

           

MADE IN U.S.A.

INPUT IMPEDANCE 22K OHM EACH LEG

TO GROUND (TOTAL 44K OHMS BALANCED)

          

          

 

 
   

DRIVE CH 2 IN BRIDGED MONO

10

11

POWER

ON

2
A
M
P

HEADPHONES

CH 1

CH 2

CLIP/PROTECT

CLIP/PROTECT

SIGNAL

SIGNAL

READY

READY

    

            

2

1

4

5

3

4

6

7

8

9

5

8

6

Controls And Functions

1. POWER SWITCH
When this switch is engaged, the power turns ON and the READY indicators illuminate. Be sure all
connections are made and double-checked before switching the power amplifier on.

2. CIRCUIT BREAKER
This protection device will trip if the line current exceeds the rating of the circuit breaker, causing the
amplifier to shut down completely. This operates the same as a standard line fuse, except that it is resettable
from the front panel after cooling down for a few seconds.

3. HEADPHONES (PM125 ONLY)
All conventional dynamic headphones may be plugged in here. Headphone impedance may range from a
few ohms to several thousand ohms, although output level will vary depending on the impedance.
The HEADPHONES output is tapped directly off of the Speaker Output terminals and is therefore affected
by the setting of the LEVEL controls on the rear panel.
Note: Do not use headphones when the amplifier is switched to Bridged Mono operation. The left channel
(CH1) will be out of phase with the right channel (CH2).

4. CH1 /CH2 STATUS INDICATORS
These LEDs display information about the operation of the amplifier.

READY – These LEDs illuminate green when the power is on and the amplifier is ready to operate. The
READY LEDs illuminate red when the power switch is first turned on (while the power supply is stabilizing
prior to the speaker output relays switching in), or when the amplifier is in protect mode.
SIGNAL – These LEDs illuminate yellow when a signal is present at the Speaker Output jacks to provide an
indication of output power relative to full power (0dB).
CLIP/PROTECT – These LEDs illuminate red when the power switch is first turned on, when the output
begins to clip, or whenever there is a fault condition detected that causes the output relay(s) to disengage.
These fault conditions include excessive DC Offset, excessive heatsink temperature and short circuits at the
speaker output(s).
Note: The relays operate independently for each channel. Therefore, it is possible for one channel to operate
normally while the other is in “protect” mode.

Содержание pm125

Страница 1: ...normative document s EN55013 EN55020 EN60065 title and or number and date if issue of the standard s or other normative document s if applicable following the provisions of 89 336 EEC 73 23 EEC Direc...

Страница 2: ...rated at 62 watts per channel into 4 ohms and 50 watts per channel into 8 ohms In bridged mono operation it is rated at 125 watts into 8 ohms The pm420 is rated at 210 watts per channel into 4 ohms a...

Страница 3: ...rated at 62 watts per channel into 4 ohms and 50 watts per channel into 8 ohms In bridged mono operation it is rated at 125 watts into 8 ohms The pm420 is rated at 210 watts per channel into 4 ohms a...

Страница 4: ...ohms at 1kHz with no more than 0 1 THD 62 watts per channel into 4 ohms at 1kHz with no more than 0 1 THD Bridged mono operation 125 watts into 8 ohms at 1kHz with no more than 0 1 THD Dynamic Headroo...

Страница 5: ...one jack Convection cooled 70V transformer option CE 1997 approved Continuous Average Output Power both channels driven 50 watts per channel into 8 ohms at 1kHz with no more than 0 1 THD 62 watts per...

Страница 6: ...ADY SIGNAL CLIP PROTECT Size H x W x D 3 50 2U x 19 x 13 25 89mm x 483mm x 337mm Net Weight 23 8 lbs 10 8 kgs Shipping Weight 28 lbs 12 73 kgs Due to ongoing continuous product development features sp...

Страница 7: ...ADY SIGNAL CLIP PROTECT Size H x W x D 3 50 2U x 19 x 13 25 89mm x 483mm x 337mm Net Weight 23 8 lbs 10 8 kgs Shipping Weight 28 lbs 12 73 kgs Due to ongoing continuous product development features sp...

Страница 8: ...OFF 0dB OFF 0dB MADE IN U S A INPUT IMPEDANCE 22K OHM EACH LEG TO GROUND TOTAL 44K OHMS BALANCED DRIVE CH 2 IN BRIDGED MONO 10 11 POWER ON 2 A M P HEADPHONES CH 1 CH 2 CLIP PROTECT CLIP PROTECT SIGNA...

Страница 9: ...OFF 0dB OFF 0dB MADE IN U S A INPUT IMPEDANCE 22K OHM EACH LEG TO GROUND TOTAL 44K OHMS BALANCED DRIVE CH 2 IN BRIDGED MONO 10 11 POWER ON 2 A M P HEADPHONES CH 1 CH 2 CLIP PROTECT CLIP PROTECT SIGNA...

Страница 10: ...at the ventilation holes are not covered and that air is allowed to circulate freely behind beside and above the unit Excessive heat is the single greatest source of both short term and long term comp...

Страница 11: ...at the ventilation holes are not covered and that air is allowed to circulate freely behind beside and above the unit Excessive heat is the single greatest source of both short term and long term comp...

Страница 12: ...es disabled Connect the speakers to the Speaker Outputs on the amplifier in the same way that you would for normal stereo operation Both speaker outputs will carry the signal that is connected to the...

Страница 13: ...es disabled Connect the speakers to the Speaker Outputs on the amplifier in the same way that you would for normal stereo operation Both speaker outputs will carry the signal that is connected to the...

Страница 14: ...m125 pm420 are shipped from the factory with pin 2 hot as indicated on the rear panel The polarity of the balanced inputs can be reversed by changing four jumpers located on the amplifier s main circu...

Страница 15: ...m125 pm420 are shipped from the factory with pin 2 hot as indicated on the rear panel The polarity of the balanced inputs can be reversed by changing four jumpers located on the amplifier s main circu...

Страница 16: ...may be internal to the pm125 pm420 1 The Input Level controls are set too low 2 Move the input connections to another amplifier that you know is working to verify that it is not a source problem 3 Ch...

Страница 17: ...may be internal to the pm125 pm420 1 The Input Level controls are set too low 2 Move the input connections to another amplifier that you know is working to verify that it is not a source problem 3 Ch...

Страница 18: ...RETAIN AND PROVIDE YOUR SALES RECEIPT TO OBTAIN COVERAGE UNDER THIS LIMITED WARRANTY The warranty Period begins from the date of first consumer purchase from an Authorized Carver Professional Dealer...

Страница 19: ...RETAIN AND PROVIDE YOUR SALES RECEIPT TO OBTAIN COVERAGE UNDER THIS LIMITED WARRANTY The warranty Period begins from the date of first consumer purchase from an Authorized Carver Professional Dealer...

Страница 20: ...normative document s EN55013 EN55020 EN60065 title and or number and date if issue of the standard s or other normative document s if applicable following the provisions of 89 336 EEC 73 23 EEC Direc...

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