Hafler P7000 manual Amplifier Module Replacement, Wire Color Function Terminal

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AMPLIFIER MODULE REPLACEMENT

The amplifier modules have been designed to eliminate the need for a special workplace if a field exchange becomes necessary. All wire connections are made with quick connect terminals so soldering is not necessary. The following tools are needed to disassemble the amplifier:

Allen wrench, 9/64

Phillips screwdriver, #1 tip

Thin nose pliers

Small cutters

Remove the four Phillips head screws, located on the rear panel, which secure the input jacks. Remove the six 9/64 Allen screws that hold the cover. These are located along the top edge, two on each side and two on the rear. Lift the cover from the rear and remove it. Remove the level control knob. The wire harnesses have been bundled for neatness. Cut the ties to free the bundles.

Disconnect the red and black output wires from the binding posts and the fan and power wires from the amplifier drive card. Disconnect the transformer secondary wires from the bridge rectifier and PC board. Unplug the gray mono cables.

The heatsink is attached to the chassis by three screws, two outside and one inside. Remove the two 9/64 Allen screws on the bottom edge of the side of the amplifier. Remove the Phillips screw located behind the level control, which is accessible through the hole in the PC board. The module can now be lifted from the chassis.

Prepare a new Channel 1 module for installation by setting the input mode switches to the default position according to the markings adjacent to the switches. Prepare a Channel 2 module by duplicating the switch settings of the module which was removed.

Install the new module and check the position and alignment of the indicator LEDs. Replace the level control knob and check the alignment while securing the module.

Plug in the gray mono cables. The headers are marked with the proper position for Channel 1 and Channel 2. The plugs are oriented so the cable will fit properly in one direction only.

Reconnect the remaining wires according to the following chart.

 

Wire Color

Function

Terminal

 

 

 

 

 

 

 

 

 

Red

Audio Output

Red Binding Post

 

 

Black

Output Ground

Black Binding Post

 

 

Orange (two)

High Voltage AC

Bridge Rectifier AC

 

 

White

High Voltage Center Tap

CTI

 

 

Red

High Voltage DC Positive

+ Red

 

 

Blue

High Voltage DC Negative

– BLUE

 

 

White/Blue

Low Voltage Center Tap

CT2

 

 

Blue (two)

Low Voltage AC

LV1, LV2

 

 

 

 

 

 

 

 

 

 

 

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Contents Trans Follow Instructions R F O R M a N C E Specification S Technical Reference InstallationB L E O F C O N T E N T S OperationT R O D U C T I O N Unbalanced Input InstallationBalanced Input 1/4 Tip Ring Sleeve Balanced Input XLRDual Mono Two-Channel StereoBridged Mono Stereo/Bi-Amp E R a T I O NNormal/Bridged Short SignalClipping ThermalC H N I C a L R E F E R E N C E Field Service ConsiderationsPC B O a R D L a Y O U T Page R T S L I S T CER-106SM P7000 Functional Block Diagram Transnova Implementation Circuit OperationFan Speed Regulation Thermal Protection Wire Color Function Terminal Amplifier Module ReplacementBuilding Custom Xcards High Pass Low Pass Full RangeButterworth Alignment Q = Resistor ChartSE R V I C E P O L I C Y a N D LI M I T E D W a R R a N T Y

P7000 specifications

The Hafler P7000 is a professional power amplifier renowned for its robust performance and reliability in live sound and studio applications. A cornerstone of the Hafler brand, the P7000 embodies advanced technology and engineering, making it a popular choice among audio professionals.

One of the standout features of the P7000 is its high power output. It delivers up to 700 watts per channel at 4 ohms, providing ample headroom for demanding audio environments. This powerful output makes it suitable for driving large loudspeakers or multiple speaker systems, ensuring clear and dynamic sound reproduction even at high volumes.

The P7000 utilizes a class AB amplifier design, combining the benefits of class A and class B architecture. This design choice ensures low distortion levels while maintaining efficient operation. As a result, users can expect a warm and natural sound with low signal degradation, making the amplifier ideal for critical listening environments.

In terms of build quality, the Hafler P7000 is constructed with durability in mind. The chassis is made from robust materials that can withstand the rigors of frequent transport and use in various settings, from professional studios to live concert venues. Additionally, the amplifier features a well-ventilated design, minimizing overheating and ensuring reliability during extended operation.

The P7000 also includes advanced protection circuitry to safeguard against overload and short circuits. This feature not only protects the amplifier itself but also the connected speakers, providing peace of mind during high-energy performances. Furthermore, the amplifier incorporates a soft start circuit, which gradually ramps up power to the speakers, preventing sudden jolts that could cause speaker damage.

Connectivity is another key aspect of the Hafler P7000. It offers a variety of input options, including XLR and 1/4" TRS connectors, making it compatible with numerous audio sources and easy to integrate into any existing setup. Balanced inputs help reduce noise and interference, ensuring clean signal transfer over long cable runs.

With its combination of powerful output, reliable performance, and versatile connectivity, the Hafler P7000 stands out as a professional-grade amplifier. Whether used in a studio setting or live sound application, it provides audio professionals with the tools they need to achieve exceptional sound quality and consistency.
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