Knoll Stereo Amplifier KES400 User Manual

KES400 KES600  
Eco-System Power  
KES400 and KES600 Eco-SystemAmplifier  
specifications:  
Amplifiers  
Installation Instructions v1.3  
Inputs:  
Input impedance:  
Outputs:  
Output power:  
Peak output power:  
Ideal impedance:  
8 or 12 gold RCA jacks with adjustable gain  
50k ohms  
5 way gold binding posts  
50 watts RMS per channel (8 ohms)  
100 watts per channel (8 ohms)  
4 8 ohms  
Warning: To be installed and/or used in accordance with  
appropriate electrical codes and regulations.  
Frequency response: 10 Hz 40 kHz +/- 1dB (1w)  
S/N ratio:  
Over 105 dB A weighted (50 watts)  
Less than 0.1% 20 Hz to 20 kHz  
Less than 0.01% 60 Hz 7 kHz 4:1 (SMPTE)  
17” x 3.5” x 11.5” (432 x 89 x 292 mm)  
Quiet 28 dBA  
Standby in Eco-Systemless than 5 watts  
Maximum 750 watts at 117 VAC or 230VAC  
KES400 20 lbs (9 kg); KES600 22 lbs (10 kg)  
Steel chassis, powder coated; glass epoxy  
printed circuit boards  
Introduction: Thank you for your purchase of a Knoll  
Eco-System multi-channel power amplifier and  
congratulations on your choice. This amplifier is  
specifically designed to save energy when idling, which  
can be most of the time. When compared to similar power  
amplifiers the KES400 and KES600 uses less than 5% of  
the energy required for normal amps to idle.  
THD distortion:  
IMD distortion:  
Dimensions:  
Fan noise:  
Power:  
Weight:  
Construction:  
FEATURES:  
Eco-SystemCircuitry saves energy (and  
money) and increases power.  
12 channels x 50 watts RMS at 8 Ohms (over  
100W peak). KES400 8 channels.  
Individual and automatic channel resetting  
protection for low impedance, overheating,  
overloading, overvoltage and undervoltage.  
Individual gain controls for all channels.  
Electronic Link feature connects stereo inputs  
channel 2 through 6 to channel 1. KES400  
connects stereo inputs channel 2 through 4 to  
channel 1.  
Side-mounted thermostatically controlled fan for  
internal cooling.  
Two rack spaces (3-1/2”) with optional rack  
mount version.  
Warranty  
Knoll Systems warrants its products 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 option, 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.  
145 Tyee Drive Point Roberts, WA 98281  
12140 Horseshoe Way Richmond BC V7A 4V5  
tel (604) 272 4555, fax (604) 272 5595  
KES400 and KES600 Made in Canada, 2011, Knoll Systems All Rights Reserved  
Download from Www.Somanuals.com. All Manuals Search And Download.  
8. Make sure the speakers in each room are connected in phase  
with the amplifier + going to the speaker +. Out of phase  
speakers give unstable imaging and poor bass response.  
Installation  
Installing the amplifier should be relatively easy. With a bit of  
planning, this amplifier will give trouble free service for years.  
9. Connect the AC power into an outlet than can supply at least  
six amps (750 watts) dedicated to each KES400 or KES600.  
1. The most important consideration when installing the  
KES400 and/or KES600 is cooling. This amplifier has a lot of  
power packed into a small chassis size. When installing it in an  
equipment stack, it should be the top component. It needs at  
least 3"-5" of space above the amplifier to allow for adequate  
convection cooling.  
10. After the amp has been turned on adjust the “SENS” pot on  
the rear of the amplifier if necessary. The “SENS” adjustment  
can be adjusted up (clockwise) to make the amp less  
susceptible to be turned on due to nuisance noise and hum. If it  
is adjusted too high, the amp may delay turn on or turn off  
during a quiet music or speech passage.  
2. When installing the KES400 and/or KES600 in a rack we  
suggest adding a 3-1/2" blank above and below the amplifier. In  
multiple KES400 and KES600 installations, plan for a 3-1/2"  
blank (double) between each amplifier and a 3-1/2" blank on  
the top and bottom. Amplifiers should always be the top  
components in a rack system.  
Caution: Never listen to sound that is distorted. If distorted  
sound is heard, turn the volume down immediately or speaker  
and/or amplifier damage could occur that is not covered by the  
warranty. If this problem persists, contact your dealer.  
User Adjustments and Service: There are no user  
adjustments inside the KES400 or KES600. Your installer may  
make certain gain and sensitivity level adjustments on the rear  
panel.  
3. The KES400 and KES600 are available as an optional 19" EIA  
rack mount style.  
4. Never operate a KES400 or KES600 on its side, as the cooling  
potential drops significantly when operated on the side.  
Caution: The KES400 or KES600 contains no user serviceable  
parts, so do not attempt to open or repair the KES amp.  
Refer servicing to a qualified technician only or contact the  
factory for information.  
5. Connect the KES400 or KES600 RCA inputs to the source  
component outputs with good quality, short as possible RCA  
jack cables. Connect each channel individually.  
Troubleshooting  
6. Connect the KES400 or KES600 speaker outputs to speakers  
using good quality speaker wire. Minimum 16 gauge copper wire  
is recommended with 14 gauge minimum for runs over 30'  
(10m). Fire-rated wire may be required if installing wires inside  
walls, ceilings or floors.  
If a problem is encountered with the KES400 or KES600  
amplifier, the most expedient procedure is to locate the problem  
and if possible repair it before requesting service. Be sure to  
carefully check other system components such as controllers,  
CD players, volume controls, wiring, speakers, etc. that may be  
at fault.  
Note: Ideally the KES400 and KES600 amplifiers like 6-8 ohm  
loads. Connecting to 4-ohm loads won't hurt the amplifier, but  
the channels connected to 4-ohm loads may occasionally  
shutdown due to overloading. Never connect any KES400 or  
KES600 amplifier to less than 4 ohms.  
7. Individually adjust the channel gains as required. Ideally, all  
gains are fully on (fully clockwise).  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Caution: NEVER connect the KES400 or KES600 to  
impedances less than 4 ohms or amplifier damage not  
covered by the warranty may occur.  
KES600 Rear Panel  
The “SENS” pot controls the level threshold setting of the  
automatic power on and off to all channels. Each channel  
turns on and off individually.  
The Link button is normally set to the in position to give  
all six stereo inputs individual sources. When a channel  
Link button is set to the out position, that channel is  
(Left/Right) linked or cascaded to input #1 (without the  
use of Y cords). Any or all combinations of linked inputs 2  
to inputs 6 are possible. When all inputs are linked to  
input one, the input impedance is about 8500 ohms.  
Power On  
Initially adjust the “SENS” on to about 1/3 level. Turn on a  
source to one or more channels and see if the channel  
turns on (observe the front panel led). With soft music on,  
the channel should sense the music and turn on. If it does  
not turn on, try turning the “SENS” adjustment counter  
clockwise slowly until the channel turns on.  
Note: When linked unused RCA inputs can be used as  
outputs to other amplifiers.  
Power Off  
If the channel does not turn off about 3-30 seconds after  
a source has been muted or shut off, adjust the “SENS”  
slowly clockwise and wait 30 seconds. If it still does not  
turn off, turn it a bit more clockwise and wait another 30  
seconds. Keep doing this until the channel turns off in 3-  
30 seconds.  
Note 1: Ideal speaker impedance is 6-8 ohms.  
Download from Www.Somanuals.com. All Manuals Search And Download.  

JL Audio Car Stereo System SB T TUNCNSL 10W3 User Manual
John Lewis Oven JLBIOS662 User Manual
JVC DVR LVT2016 001D User Manual
JVC Home Theater System TH S3 TH S2 User Manual
JVC Network Card KA HD250 User Manual
Kenwood Stereo System VRS 7200 User Manual
Keys Fitness Home Gym ET920D User Manual
KitchenAid Dishwasher KUDC25CH User Manual
KitchenAid Toaster KCMC1575 User Manual
KOI Portable Speaker Professional Powered Mini Monitor Speaker System User Manual