Knoll Systems - Products

Four Source, Four Room Controller-Amplifier

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The MVP44a features four deluxe digital volume controlled stereo amplifiers with individual four source selection with eight 50 watt power amplifiers configured as four stereo amplifiers in one chassis. The MVP44a is designed to meet the amplifier needs of custom installed multi-zone systems where high-quality sound is a specific requirement.

Extras such as an external voltage trigger that can turn source equipment on and off, individual volume, mute, bass, treble and balance controls give the MVP44a 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 MVP44a's and external control of the MVP44a. Output ports are provided for connection to infrared controllers, so infrared signals can be relayed from the keypads to the source equipment.

The MVP44a is normally controlled by the MR60 or MR64 keypad but it can also be controlled by an infrared receiver and RB8 remote control. The MR60 and MR64 features all zone control of all off, all zones to source 1, 2, 3 or 4 (then set or reset all room volumes to 33 percent) and all zones volume up or down.

Four input source selection. Each of the four stereo amplifiers are provided with four input source selection. Selection is made on the MR60 keypad(s), MR64 keypads, RB8 remote control or via an external controller. Rooms can have different source selections.
Four internal 76 position stereo volume controls. The four volume controls each require a MR60 keypad, MR64 keypad, RB8 remote control or external controller. 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 MVP44a consists of a total of eight 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 MVP64a delivers exceptional value.
Automatic protection circuitry. Each MVP44a 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 on the rear of the MVP44a so installers can preset the room for speaker differences and listener preferences.
External trigger. The MVP44a can turn on and off source components with its 12vdc trigger output.
All zone control. The MR60 and MR64 features all zone control of all off, all zones to source 1, 2, 3 or 4 (then sets volume at 1/3) and all zones volume up or down.
MVP44a includes a quiet internal fan to increase its long-term power output capability.
Infrared controller port. System commands generated from the MR60 and MR64 keypads can automatically turn on and off source components as well as a limited number of functions such as play, skip, etc.
Optional rack mount version. Occupies two rack spaces.

Specifications:

Inputs	8 gold RCA jacks with adjustable gain
Input impedance	50,000 ohms
Outputs	5 way gold binding posts
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	76 steps
Fan Noise	Quiet 28 dBA
Source Selection	4 stereo inputs to 4 stereo outputs
Dimensions	17" x 3.5" x 11.5" (432 x 89 x 292mm)
Power	550 watts at 117 VAC or 230VAC
Weight	20 lbs (9 kg)

Note: Specifications subject to change without notice.

Options:

MR60 keypads: Each of the six stereo amplifiers in the MVP64a can be individually controlled (power on/off, volume up/down, mute and four input source selection) by the MR60. MR60 includes an infrared pass-through as well as complete control by the RB8 remote control. MR60 keypads are available with three different source selection legends (MR60a, MR60b and MR60c) and are available in white, ivory (bone), black and almond colors. See the different MR60 keypad layouts.

MR64 LCD keypads: Each of the six stereo amplifiers in the MVP64a can be individually controlled (power on/off, volume up/down, mute and four input source selection) by the MR64. MR64 includes an infrared pass-through as well as complete control by the RB8 remote control. MR64 keypads have over 25 source labels and are available in white, ivory (bone), black and almond colors.

RB8 remote controls the MVP64a. Each of the six stereo amplifiers in the MVP64a can be individually controlled (power on/off, volume up/down, mute and four input source selection) by the RB8 in conjunction with the MR60, MR64 and or the MR173 (with an infrared receiver).

DC101: Door Chime module. Connect up to three lighted door buttons (front, side and rear). Gives selectable (4 banks) chimes and overrides sound even if MVP64a is in standby. Includes power supply.

MR171: Microphone paging module. Balanced microphone XLR input. Switchable phantom power. Uses contact closure or automatic sound detection for activation. Adjustable gain and activation sensitivity. Includes power supply.

MR173: Three zone infrared receiver converter. Converts Knoll RB8 remote control commands in three different zones from an infrared receiver (no keypad required) to useable commands on the MVP64a without MR60 keypads. Infrared pass through is also active. Powered by the MVP64a.

MVP64a-Rack: Rack mount version of the MVP64a for standard 19" rack. Occupies two rack spaces. It is strongly recommend blank spaces above and below for maximum power output.

590-10 Xantech infrared sequencer. Converts the six output pulses from the MVP64a to useable infrared sequences. Turns on and off source equipment via IR and has four installer set function IR commands (CD play, tuner seek, etc.). Requires software program.