Warranty 4K and 6K Amplifier
Knoll Systems warrants MA1250 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 and 12 Channel Amplifier
Installation Instructions v1.3
Warning: To be installed and/or used in accordance with appropriate
electrical codes and regulations.
Description: The 4K and 6K are members of the long line of Knoll
multi-channel amplifiers. Designed primarily for the custom install
industry, they are used to power speakers with different or similar
sources in multiple rooms. With 8 or 12 channels rated at 50 watts per
channels at 8 ohms, these amplifiers pack some serious punch. Each
channel has a gain control. The amplifier can be turned on and off via
the front panel power switch or via the 12 VDC trigger. 4K channels 3-8
can be linked to channel 1-2 individually using the link switches. 6K
channels 3-12 can be linked to channel 1-2 individually using the link
switches. 4K and 6K amplifiers designed to meet the amplifier needs of
custom installed systems where high-quality sound is a specific
requirement.
Specifications: 4K (eight channel)/6K (twelve channel)
Inputs 8/12 Gold RCA jacks with adjustable gain
Input impedance 50k ohms
Outputs Gold 5 way 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 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 550/750 watts at 117 VAC or 230 VAC
Weight 21 lbs (9.5 kg)
Key Features:
1. Size efficiency. The 4K has eight power amplifiers and the
6K has twelve power amplifiers each 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 amplifier 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 rear chassis input gain adjustment pot to adjust each channel
for gain and speaker sensitivity variations.
Note: Specifications subject to change without notice.
4. External power on/off. The 4K and 6K can be turned off
and on by external controllers using the 12 VDC trigger jack.
5. Stackable 17" chassis with 19” EIA rack version option.
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 2-6 to channel 1
(l/r) on model 6K. With 4K link 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