Nady Audio SPM-4250 Owner's Manual
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Nady Audio SPM-4250 Owner's Manual

4-channel stereo powered mixer
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OWNER'S MANUAL
SPM-4250
4-Channel Stereo Powered Mixer

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Summary of Contents for Nady Audio SPM-4250

  • Page 1 OWNER’S MANUAL SPM-4250 4-Channel Stereo Powered Mixer...

  • Page 2: Table Of Contents

    This unit was developed using the expertise of professional sound engineers and working musicians. You will find that your new SPM-4250 has superior performance and greater flexibility than any other stereo powered mixer in its price range. Please read this manual carefully to get the most out of your new unit.

  • Page 3: Warning

    ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR IMPORTANT SAFETY INSTRUCTIONS When using this electronic device, basic precautions should always be taken, including the following: Read all instructions before using the product. Do not use this product near water (e.g., near a bathtub, washbowl, kitchen sink, in a wet basement, or near a swimming pool, etc.).

  • Page 4: Installation

    Parts of the unit can become very warm during use. This is normal during operation. Care should be taken to ensure that there is enough space around the unit for cooling. Also, do not place the SPM-4250 on high temperature devices such as power amplifiers, etc., or the unit may overheat in operation.

  • Page 5: Front Panel Controls & Connections

    FRONT CONTROLS AND CONNECTIONS CHANNEL SECTION (1) MIC INPUT This electronically balanced XLR input is designed to accept signals from any balanced or unbalanced low impedance (Low Z) microphone. The XLR jack is configured for: Pin1 = ground, Pin2 = positive (+), Pin3 = negative (-).
  • Page 6 EFFECTS (7). Adjusting the PFL never affects the AUX SEND (18), RECORD OUT (20), or SPEAKER OUTPUTS (26). This is useful if the person operating the SPM-4250 wants to listen to one or more of the input signals, especially, to troubleshoot problems without affecting the main mix.

  • Page 7: Master Section

    (19) AUX RETURN This input can be used to return the effected signal into the SPM-4250 or it can be used as an auxiliary input for line level devices. The input signal can be adjusted using the MASTER VOLUME (24) and the output volume of the external unit.

  • Page 8: Rear Panel Controls & Connections

    REAR CONTROLS AND CONNECTIONS (25) (29) (28) (27) (26) (25) PHANTOM POWER ON/OFF SWITCH When this switch is depressed, +48V of phantom power will be supplied to the XLR mic inputs. (26) SPEAKER OUTPUT JACKS The left and right 1/4" speaker outputs can deliver up to 125W RMS per side to 4Ω loads. (27) POWER CONNECTOR The IEC socket is used to connect the power cord to an AC power source.

  • Page 9: Connection

    This NADY AUDIO mixer uses 4 different types of audio connectors for the various input/output connections: (1) XLR balanced; (2) 1/4” TRS phone jacks for balanced, unbalanced, stereo, or in/out inserts; (3) 1/4” TS unbalanced; (4) RCA pin unbalanced Figures 1.

  • Page 10: Specifications

    1. INPUT SECTION Input MONO CH MIC XLR BALANCED MONO CH LINE 1/4” TRS BALANCED AUX RETURNS 1/4” TS BALANCED TAPE IN RCA JACKS 2. OUTPUT SECTION Output AUX SEND 1/4” UNBALANCED TAPE OUT RCA JACKS 3. MIXER SECTION Frequency Response ... 30Hz~18KHz (-3dB) THD ...

  • Page 11: Notes

    NOTES...
  • Page 12 DO NOT ATTEMPT TO SERVICE THIS UNIT YOURSELF AS IT CAN BE DANGEROUS AND WILL ALSO VOID THE WARRANTY. NADY SYSTEMS, INC. • 6701 SHELLMOUND STREET, EMERYVILLE, CA 94608 Tel: 510.652.2411 • Fax: 510.652.5075 • www.nady.com...

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