Hughes & Kettner 400 manual

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Table of contents for the manual

  • Page 1

    BEDIENUNGSANLEITUNG l!l . 400 WATTS BASSAMPLlFlER MANUAL BASS TECHNOLOGY[...]

  • Page 2

    BASSBASE 40 0 - MANUAL 1 .O CONNECTIONS AND CONTROL FEATURES SIGNAL LED: Indicates the presence of an instrument signal at the tube stage. -10 db SWITCH : Lowers the BASSBASE'S input impedance (e.g. for active instruments). DIRECT: Press this button to send the original instrument signal (unaffected by gain settings, voicing controls, FX loop [...]

  • Page 3

    BASSBASE 400 - MANUAL Red VARIMETRIC LED: Illuminates to indicate the VARIMETRIC EQ is active. FX LOOP ON : Press this button to activate the E parallel FX loop BASSBASE 400’s DYNACLIP LED: Illuminates when the DYNACLI P power amp circuit is active . DYNACLIP eliminates undesirable power amp distortion and provide s 20% additional headroom in com[...]

  • Page 4

    BASSBASE 40 0 - MANUAL REAR PANEL: FOOTSWITCH VARIMETRIC: Connect a standard single-channel footswitch to this jack. If you use a HUGHES & KETTNER FS-1, its LED will illuminate when you activate the VARIMETRIC EQ. I TUNER OUT: Output jack for an external tuning device. FOOTSWITC H FX LOOP: Connect a standar d single- channel footswitch to this [...]

  • Page 5

    BASSBASE 40 0 - MANUAL 2.0 STANDARD SETUP / CABLE CONNECTIONS TUNER EXTERNAL POWER AMP FOOTSWITCH For safety purposes, the BASSBASE 400’s power amp is exclusively equipped wit h Speaker and female XLR jacks. In some cases, you may need to employ an adapter cable. The requisite pin assignments are depicted on the SPEAKER OUT panel. NOTE: Under no [...]

  • Page 6

    BASSBASE 40 0 - MANUAL 3.2 THE VARIMETRI C E Q Why call i f "VARIMETRIC" rather than “PARAMETRIC?” The BASSBASE 400 VARIMETRIC EQ and FX LOOP can be switched via the buttons on the front panel or remotely via optional footswitches. NOTE: Please make sure you set the front panel buttons fo the OFF position (not depressed) when you want[...]

  • Page 7

    BASSBASE 40 0 - MANUAL 3.3 THE NOTCH FILTER Undesirable frequencies such as those caused by resonant object in the room or floor boards in the stage can be suppressed via the NOTCH FILTER. The NOTCH FILTER operates in extremely narrow bandwidths to avoid altering the overall sound. Adjust the NOTCH FILTER as follows: - Turn the NOTCH FILTER LEVEL c[...]

  • Page 8

    BASSBASE 40 0 - MANUAL 4.0 SERVICE AND PREVENTIVE MAINTENANCE The BASSBASE 400 will not require service of any type for many years. Tube fatigue is normal after several thousand operating hours and becomes apparent through treble loss or increased microphonics (audible as a ringing noise reproduced by the tweeter). Use a soft, slightly damp cloth t[...]

  • Page 9

    BASSBASE 40 0 - MANUAL 6.0 TECHNICAL DATA TUBEPREAMP TUBE TYPE: PREAMP SECTION BASS, FREQUENCY: TREBLE, FREQUENCY: VARIMETRIC EQ LO MID, CENTER FREQUENCY: HI MID, CENTER FREQUENCY: NOTCHFILTER CENTER FREQUENCY: INPUTS INSTRUMENT: FX RETURN: OUTPUTS: FX SEND: LINE OUT: DI OUT: TUNER OUT: POWER AMP: SLEW RATE: DAMPING FACTOR FREQUENCY RESPONSE (1 w/ [...]