Stereo & Multi-Channel Amplifiers
Balanced Video & Stereo Baluns with Cat-5 transmission.
Infrared Repeaters & Extenders
Transformer-Free ™ Stereo Interfaces
Multi-Room Products - Controllers & Amplifiers.
Power Management, Conditioning & Regulating Products
120 Volt Input Power Supplies
Digital Projectors & Accessories
Architectual Speakers
Volume Controls

GSZ67

Seven Source, Six Room Controller-Amplifier

The GSZ67 features six deluxe digital volume controlled stereo amplifiers with individual seven source selection. This is Knoll's third generation of multi-channel, high-quality power amplifiers. The GSZ67 is designed to meet the amplifier needs of custom installed multi-zone systems where high quality sound is a specific requirement.

Each of the six zones or rooms can select any of the seven inputs, with individual volume control, bass, treble and balance. Extras such as an external voltage trigger that can turn source equipment on and off, individual zone infrared outputs, a fully balanced paging override, RS232 control, fully buffered line level outputs and many more features give the GSZ67 exceptional value when installed in homes and large complex systems. Except for the power button all controls are rear mounted. A data port is provided for ganging multiple GSZ67's. Infrared signals can be relayed from the keypads to the source equipment.

The GSZ67 is normally controlled by MR164 LCD keypads with or without Knoll remote controls or RS232 commands from whole house controllers. The paging override is normally used for whole house announcements or door bell chimes.

  • Seven input source selection. Each of the six stereo amplifiers are provided with seven input source selection. Selection, volume level, bass, treble and balance is made on MR164 keypads, Knoll remote control (or a programmed remote control) or via an external controller. Rooms can have different source selections, volumes, etc.
  • Six internal 81 position stereo volume controls. The six zones can each require a MR164 keypad, RB12 remote control or external controller via RS232. The keypads are typically mounted in the room with the speakers and they control amplifier power on/off, volume up/down and mute as well as source selection.
  • Cost and size efficiency. The GSZ67 consists of a total of 12 power amplifiers in one 3-1/2" high enclosure (two rack spaces). Each power amplifier channel can deliver 50 watts RMS with peaks of 100 watts. Because of its unique design the GSZ67 delivers exceptional value.
  • Automatic protection circuitry. Each GSZ67 amplifier channel is individually and fully protected against low impedance, overheating, overloading, over voltage and under voltage. The protection circuitry automatically restores the amplifier channel as soon as its parameter returns to the safe operating area.
  • Individual bass, treble and balance adjustment. Each channel features adjustments so installers can preset the room for speaker differences and listener preferences.
  • External trigger. The GSZ67 can turn on and off source components with its 12vdc trigger output.
  • All zone control. The MR164 keypad features all zone control of all off, all zones to any one source (then set volume at 1/3) and all zones volume up or down.
  • GSZ67 includes a quiet thermostat controlled internal fan to increase its long-term power output capability.
  • Infrared controller ports. Each zone or room has its own infrared output jack. An all zone jack is also provided.
  • Zones 5 and 6 have controlled line level outputs so larger powered amplifier can be connected to these outputs.
  • Optional rack mount version. Occupies two rack spaces.

    Specifications:

    Inputs 14 gold RCA jacks with adjustable gain. Each input has a fully buffered RCA jack output.
    Input impedance 50k ohms
    Outputs Removable screw terminal, accepts 12-20 gauge wire
    Output power 50 watts RMS per channel (8 ohms)
    Peak output power 100 watts per channel (8 ohms)
    Ideal impedance 4 - 8 ohms
    Frequency response 10 Hz - 40 kHz +/- 1dB (1w)
    S/N ratio Over 105 dB A weighted (50 watts)
    THD distortion Less than 0.1% 20 Hz to 20 kHz
    IMD distortion Less than 0.01% 60 Hz 7 kHz 4:1 (SMPTE)
    Trigger output 12 VDC on 3.5mm jack
    Volume Adjustments 81 steps
    Fan Noise Quiet maximum of 26 dBA (with thermostat so it is normally off)
    Source Selection 7 stereo inputs and paging to 6 stereo outputs
    Dimensions 17" x 3.5" x 11.5" (432 x 89 x 292mm)
    Power 750 watts at 117 VAC or 230VAC
    Weight 22 lbs (10 kg)

    Note: Specifications subject to change without notice.

    Options:

    MR164 LCD keypads: Each of the six stereo amplifiers in the GSZ67 can be individually controlled (power on/off, volume up/down, mute and seven input source selection) by the MR164. MR164 includes an infrared pass-through as well as complete control by the RB12 remote control. MR164 keypads have over 25 source labels and are available in white, ivory (bone), black and almond colors.

    RB12 remote controls the GSZ67 with the MR164 keypad. Each of the six stereo amplifiers in the GSZ67 can be individually controlled (power on/off, volume up/down, mute, bass, treble, balance and seven input source selection).

    DC111: Door Chime module. Connect up to three lighted door buttons (front, side and rear doors). Gives selectable (4 banks) chimes and overrides sound even if GSZ67 is in standby. Includes power supply. Available Q4 2007.

    GSZ67-Rack: Rack mount version of the GSZ67 for standard 19" rack. Occupies two rack spaces. It is strongly recommend blank spaces above and below for maximum power output.

     

    		•
    © Knoll Systems 2005