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Table of Contents
Related Manuals for Carver pm125
Summary of Contents for Carver pm125
- Page 1 p m 1 2 5 / p m 4 2 0 Professional Stereo Power Amplifier...
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Page 2: Table Of Contents
(servicing) instructions in the literature accompanying the appliance. Installation (continued) Input Wiring...9 Input Sensitivity...10 Output Wiring...10 Polarity...10 Dual Mono...10 Bridged Mono...11 Parallel Mono ...11 Clipping Eliminator...11 Operating Tips Using the pm125/pm420...12 Servicing Instructions...13 In Case of Difficulty...14 Care and Service Assistance...15 Warranty Information ...16... -
Page 3: Introduction
And their accurate sound and ample power make them ideal for critical studio applications as well. The pm125 is 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. -
Page 4: Pm125
Input sensitivity set at 1.5V Internally reconfigurable to 0.775V • Internal jumpers to bypass Left and Right Channel Level Controls pm125 • Independent CH1/CH2 speaker relays will instantaneously disconnect if one of the following fault conditions is detected: D.C. Offset... - Page 5 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 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 Headroom:...
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Page 6: Pm420
• 135W per channel into 8 ohms 210W per channel into 4 ohms 420W mono into 8 ohms • 1/4-inch TRS input jacks • Accepts balanced or unbalanced lines • Multi-way binding post outputs • Independent 11 detent Level Controls for CH1 & CH2 •... - Page 7 Continuous Average Output Power, both channels driven: 135 watts per channel into 8 ohms from 20Hz to 20kHz, with no more than 0.1% THD 210 watts per channel into 4 ohms at 1kHz, with no more than 0.1% THD Bridged-mono operation: 420 watts into 8 ohms at 1kHz, with no more than 0.1% THD...
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Page 8: Controls And Functions
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. - Page 9 MADE IN U.S.A. OFF 0dB INPUT IMPEDANCE 22K OHM EACH LEG TO GROUND (TOTAL 44K OHMS BALANCED) 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.
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Page 10: Installation
When several amplifiers are mounted together in a rack, you may need to provide air inlets from the outside of the rack. The pm125 and U.S. versions of the pm420 are convection cooled. Export versions of the pm420 contain a fan that is mounted on the rear panel. It draws in air from the rear and exhausts it out the front, which provides additional cooling for internal components. -
Page 11: Ac Power Considerations
2 amps for 120V versions, 1 amp for 230V v e r s i o n s pm420: 10 amps for 120V versions, 5 amps for 230V v e r s i o n s... -
Page 12: Input Sensitivity
of gain (see Figure 4B). For all versions of the amplifiers, the gain remains the same regardless of whether the input is balanced or unbalanced. Note: The polarity of the balanced inputs can be reversed by changing four jumpers on the Main Board near the barrier strip inputs. -
Page 13: Bridged Mono
To configure the amplifier for parallel-mono operation, contact Carver Professional Technical Service Department for Field Application Bulletin pm125-1. It contains detailed instructions describing the simple procedure for modifying both the pm125 and pm420 power amplifiers for parallel-mono operation. -
Page 14: Operating Tips
Operating Tips Using the pm125 / pm420 Once the amplifier has been installed and wired into the system, you are ready to use it. Here are some tips to help you get the most from it. • Verify that the Stereo/ Mono switch has been set to the mode that you want. -
Page 15: Servicing Instructions
(see Figure 9). Input Polarity The XLR input connectors on the pm125 panel. The polarity of the balanced inputs can be reversed by changing four jumpers located on the amplifier’s main circuit board. Crosswire JP3 and JP4 to change the input polarity of CH1 and crosswire JP101 and JP102 to change CH2 (see Figure 8). -
Page 16: In Case Of Difficulty
Figure 9 In Case of Difficulty If you’re having trouble or suspect a problem with the pm125/pm420, try some simple troubleshooting before contacting an Authorized Carver Professional Service Center. No Sound, No Power This is usually an indication of a power supply problem, either the power line itself or the amplifier’s power supply. -
Page 17: Care And Service Assistance
Assistance C a re: Wipe off the pm125/ p m 4 2 0 ’s front panel and chassis from time to time with a soft, dry cloth. If you have something stubborn to remove, use a mild dish soap or detergent sparingly applied to a soft cloth. Don’t use alcohol, ammonia, or other strong solvents. -
Page 18: Warranty Information
EXCLUSION OF CERTAIN DAMAGES: In no event shall Carver Professional be liable for property or any other incidental or coincidental damages which may result from the failure of this product. If your Carver Professional product proves defective in material or workmanship, the liability of Carver Professional shall be limited to the repair or replacement, at the option of Carver Professional, of any defective part. - Page 19 Notes...
- Page 20 A Division Of Phoenix Gold International, Inc. 9300 North Decatur DECLARATION OF CONFORMITY (supplier’s name) (address) pm125/ 420 EN55013, EN55020, EN60065 (if applicable) following the provisions of 89 / 336 / EEC/73/23 EEC PORTLAND,OR USAApril 25, 1997 (Place and date of issue)