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PJB BRIEFCASE Owner's Manual

High performance compact-combo amplifier
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PJB BRIEFCASE
OWNER'S MANUAL

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Summary of Contents for PJB BRIEFCASE

  • Page 1 PJB BRIEFCASE OWNER’S MANUAL...

  • Page 2: Table Of Contents

    Front & Back Panel Description----------------------------------------Page 5 Getting Started-------------------------------------------------------------Page 8 Operation & Positioning--------------------------------------------------Page 8 Operation and Positioning-----------------------------------------------Page 9 Transporting & Storing the BRIEFCASE---------------------------Page 10 Using the BRIEFCASE with a Battery-------------------------------Page 10 Battery Types and Suppliers-------------------------------------------Page 12 Specifications---------------------------------------------------------------Page 14 Simplified Schematic------------------------------------------------------Page 16 Service/Warranty Information-----------------------------------------Page 17...

  • Page 3: Read This First

    If any damage is visible contact your dealer. • Keep all original packing. • Never use this product in the vicinity of water. If the BRIEFCASE were to get wet, it could kill you by electrocution. • Do not use this amplifier in a way that would compromise its ventilation system.

  • Page 4: Overview Of The Briefcase

    The two 5 inch proprietary PJB drivers have been acoustically optimally loaded by precise computer analysis to provide a full-range, dynamic sound that can play down to an open E string with ease. The BRIEFCASE can handle an open B string if not too much bass boost is used.

  • Page 5: Front & Back Panel Diagrams

    FRONT & BACK PANEL DIAGRAMS...

  • Page 6: Front & Back Panel Description

    If you want to play on headphones only, then simply disconnect the speaker cord at the back. 7. PASSIVE/ ACTIVE BASS INPUT SWITCH. This switch allows you to match the BRIEFCASE to match either active or passive basses. PASSIVE Higher sensitivity, high impedance input (125mV/4.7MΩ).
  • Page 7 If your bass have a high output, then it could be possible to achieve the maximum volume from the BRIEFCASE with the volume control set in a low position. If you increase the level on this control, you will only add distortion which can damage the speakers.
  • Page 8 These speakers must be connected via the short speaker link cable (provided) to the BRIEFCASE speaker output jack. If you do not want sound from the speakers such as playing through headphones only, then disconnect these speakers from the amplifier.

  • Page 9: Getting Started

    USE THIS AMPLIFIER WITH THE GROUND CONNECTION REMOVED. We recommend you use original PJB cables. OPERATION & POSITIONING TURN THE VOLUME DOWN on the BRIEFCASE before plugging in your instrument. Keeping Cool The amplifier needs a constant flow of cool air to maintain an optimal working temperature.

  • Page 10: Operation And Positioning

    Where you position the BRIEFCASE will ultimately affect your low frequency limit. For best results keep the BRIEFCASE on the floor. Placing it on objects off the floor will cause it to sound thin and lack bass punch. Placing the BRIEFCASE with the back close to a wall will help reinforce the lower notes.

  • Page 11: Transporting & Storing The Briefcase

    USING THE BRIEFCASE WITH A BATTERY For the ultimate in portability, the BRIEFCASE may be operated in DC mode by using a 12 volt battery (not included). The BRIEFCASE is capable of operating on an internally housed 12 V battery as well as being connected to an external 12 V DC power source such as a vehicle starting battery.
  • Page 12 Example Online Battery Suppliers and Part Numbers The following suppliers, battery brands and part numbers are provided as an example. Please use your own discretion when purchasing through a supplier. Problems that are specific to the battery units themselves need to be addressed with the respective supplier and their warranty/return policy.

  • Page 13: Battery Types And Suppliers

    BRIEFCASE on battery power. To charge the battery, simply plug the BRIEFCASE into an AC power supply. No need to switch on the amplifier as battery will charge up on its own.
  • Page 14 Typically, the BRIEFCASE should run around 1 hour between charges or more. If you require a long duration of several hours playing, then it is possible to hook up an external battery with a greater capacity.

  • Page 15: Specifications

    SPECIFICATIONS Speaker Computer Optimized Vented Enclosure Speaker Frequency Response: 40Hz –15KHz Speaker Compliment: 2 x 5inch proprietary, extended-range drivers Speaker Sensitivity: 92dB/W/M Speaker Impedance: 4 Ohms Dimensions: 6 ½” W x 14 ½” H x 15 ¾” D Weight: 28 lbs. Frequency curve Amplifier PJB 100watt Solid State amplifier with soft clip feature...
  • Page 16 Impedance Passive Input: >4MΩ/22pF Active Input: >100KΩ/22pF Line Input: >75KΩ Pre Amp Out: < 2KΩ Bal. Line Out: <200Ω Levels Passive Input: 10mV-2.5V Active Input: 20mV-5V Pre Amp Out: 1.2V Bal. Line Out: Typical 100mV Compressor / Limiter Gain: 0dB Compression Ratio: 3dB: 1dB Graphic EQ 50, 160, 630, 2.5K, 10K at +/- 18dB...

  • Page 17: Simplified Schematic

    USER NOTES...

  • Page 19: Service/Warranty Information

    SERVICE/WARRANTY INFORMATION The BRIEFCASE has a warranty period of 2 years, starting from the date of purchase. The buyer must complete and return the enclosed warranty card within 14 days of purchase. This warranty covers defect in materials or workmanship that occurs in normal use.

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