Knoll MA850 - Manual
Knoll MA850 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – In most cases, one of the following suggestions should help you; 8) A push button is used to turn the power off and on.; Warning: If you suspect that the grounding system in your; 9) A LED is used to show when the apparatus is powered on.; WARNING; : This product contains chemicals, including lead, known to the
- Page 3 – If you suspect a problem that may require servicing, contact us at; The most important consideration when installing the
- Page 4 – Connect the AC power into an outlet than can supply at; User adjustments and service:; There are no user; Caution: NEVER connect the
Warranty
MA850 Amplifier
Knoll Systems warrants MA850 amplifiers sold in the USA and Canada by
authorized Knoll dealers to be free of defects in materials and workmanship. This
warranty extends for three full years from the date of purchase by the original
consumer. Any products returned to Knoll Systems and found to be defective by
Knoll Systems within the warranty period will be repaired or replaced at Knoll
Systems decision, at no charge. Knoll Systems will not be responsible for the
actual cost of installation or removal of the product, nor for any incidental or
consequential damages. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation may not apply to
you. This warranty gives you specific legal rights. You may have additional legal
rights that vary from state to state.
8 Channel Amplifier
Installation Instructions v1.2
Warning
: To be installed and/or used in accordance with appropriate
electrical codes and regulations.
Description:
The MA850 is a member of the long line of Knoll multi-
channel amplifiers. Designed primarily for the custom install industry, it
is used to power speakers with different or similar sources in multiple
rooms. With 8 channels rated at 50 watts per channels at 8 ohms, the
MA850 packs some serious punch. Each channel has a gain control. The
MA850 can be turned on and off via the front panel power switch or via
the 12 VDC trigger. MA850 channels 3-8 can be linked to channel 1-2
individually using the link switches. MA850 amplifiers designed to meet
the amplifier needs of custom installed systems where high-quality
sound is a specific requirement.
Specifications:
Inputs
8 Gold RCA jacks with adjustable gain
Input impedance
50k ohms
Outputs
detachable plug
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 control
12 VDC 35mA on 3.5mm mono jack
Dimensions
17" x 3.5" x 11.5" (432 x 89 x 292mm)
Fan Noise
quiet 26 dBA
Power
550 watts at 117 VAC or 230 VAC
Weight
21 lbs (9.5 kg)
Key Features:
1. Size efficiency.
The MA850 consists of a total of 8 power
amplifiers in one 3-1/2” high enclosure. Each power amplifier
channel can deliver 50 watts RMS into an 8-ohm load.
2. Automatic protection circuitry.
Each MA850 channel is
individually and fully protected against low impedance,
overheating, overloading, overvoltage and undervoltage. The
protection circuitry automatically restores the amplifier channel
as soon as its parameter returns to the safe operating area.
3. Individual input gain adjustment.
Each channel features
an input gain adjustment pot to adjust each channel for gain
and speaker sensitivity variations. The gain adjustments are on
the rear of the MA850 so installers normally set the gain.
Note:
Specifications subject to change without notice.
4. External power on/off.
The MA850 can be turned off and
on by external controllers. To activate external power on, apply
a 12 VDC current to the trigger jack (the MA850 power switch is
in the off position for external power control).
5. Stackable 17" chassis.
6. Link Feature.
Certain installations require that some or all of
the stereo channels play the same content. Instead of using Y
cords, "link" cascades any or all of channels 2-4 to channel 1
(l/r).
Knoll Systems
145 Tyee Drive Point Roberts, WA 98281
12140 Horseshoe Way, Richmond, BC V7A 4V5
Tel: (604) 272 4555, fax (604) 272 5595
Made in Canada
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Summary
Important Safety Instructions: Hum and noise In most cases, one of the following suggestions should help you solve a hum noise in your system. Please try these steps in the order shown, proceeding from one step to the next if the prior suggestion does not eliminate the problem. 1) Read these instruc...
Knoll Systems service information Installation Installing the MA850 should be relatively easy. With a bit of planning, the MA850 will give trouble free service for years. The MA850 amplifier does not contain any user serviceable parts inside. If you suspect a problem that may require servicing, cont...
Output Output Output Output 1L 1R 1 2 2L 2R Gain 3L 3R Gain 4L 4R Gain Gain 3 L 4 R Input L R Input 12 VDC Trigger 120 VAC 4 Amps Link (out position) cascades channel 1 to chanels 2-4 MA850 10. Connect the AC power into an outlet than can supply at least four amps (550 watts) dedicated to each MA850...
