Knoll Systems VC224PM User's Manual
Contents
1. to the system has been switched on The six side leds show the relative selected volume When in mute center of rocker has been pushed one of the side leds blinks To restore the volume press the rocker button up or down On VC201i keypads the lower center led blinks red when any IR signal is passing through it Note If the stereo is on and the Knoll digital volume controller has lost power it defaults to position 12 7 Cat wires from rooms with more than one VC201 are run from one VC201 to the other then home run back to the controller It is very important to use a top quality RJ45 8 8 crimper tool We strongly suggest using a cat 5 RJ45 electronic tester to verify the wire conductors Connection to Stereo Equipment Remove the VC224pm orVC226pm green four position speaker connector labelled INPUT The stereo amplifier or receiver outputs left and right are connected to this VC224pm or VC226pm connector Be very careful to observe the correct polarity This controller uses independent floating grounds so bridged amplifiers can be used safely VC224pm and VC226pm controllers are rated for use with maximum 120 watt per channel amplifiers DO NOT use higher powered amplifiers with this product for safety reasons The amplifier or receiver must be rated for four ohm speaker use to work properly with the VC224pm or VC226pm controller Connect the controller to the amp or receivers speaker A or speaker B terminals2. VC201 Keypad functions Volume level indicator for this room only Room power on and volume up button Mute button volume level led blinks Infrared signal receiver VC201i only Room power on volume down and all room power off button hold down button for three led blinks System status led and infrared signal confirming be led VC201i only Limited Warranty Knoll Systems warrants VC224pm and VC226pm systems sold in the USA or Canada by authorized Knoll dealers to be free from defects in materials and workmanship This warranty extends for three full years from the date of purchase by the consumer Any products returned freight prepaid 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 consequential or incidental damages Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific legal rights You may have additional rights which vary from state to state Knoll products sold outside of the USA and Canada may be covered by warranties provided by an authorized Knoll distributor Please contact the distributor in the country that the Knoll product was purchased DMS Powermatch Trans
3. Wire the VC224pm or VC226pm connectors labelled ROOM1 ROOM2 etc directly to the correct room speakers again strictly observing polarity Power Requirements The VC224pm and VC226pm are shipped with a 12VDC 500mA or more power supply supplies power to the keypads If possible connect the 12vdc power supply to the switched outlet on the rear of the amplifier or receiver This wiring causes the VC224pm or VC226pm controller to reset to its selectable boot up every time the receiver or amplifier is turned on but when the power is off the IR section of the VC201i will not work If the IR is required to work all the time then the controller power supply must connected to an unswitched outlet Installer Selectable BOOT UP The VC224pm and VC226pm allow the installer to select how the volume control boots up in each room when the controller first receives 12vdc power For this feature to work be sure to plug the 12vdc power supply to the switched AC outlet on the rear of the receiver or amplifier Please note 6 12 and S Mute labels are inverted on zones 2 4 and 6 on the version 1 3 board To always Start MUTEed make sure the shunt on the right side of the controller room number labelled S MUTE is in place Remove this shunt and this room starts with the music on To always start up in a quiet position 6 of 17 sure the shunt on the right side of the controller room number labelled 6 12 is in place Remove this shunt
4. eaker sound From each speaker runa home run fire rated two conductor speaker wire to the VC224pm or VC226pm To save time and money most installers runa four conductor speaker wire from the VC224pm or VC226pm to the closest appropriate speaker and then run a short two conductor speaker wire to the other speaker If there is more than one pair of speakers connected to a single VC224pm or VC226pm zone the speakers can be wired in series or parallel whichever makes the impedance closest to 4 or 8 ohms Do not attempt to make the final combined speaker impedance less than 4 ohms Connecting VC201 VC201i keypads to VC224pm and VC226pm controllers Use a single cat5 wire using all eight conductors usually run inside a wall Always use standard T568A Cat 5 wiring practices shown below Use the correct wire pairs Polarity is VERY important The stereo signal is not routed to the keypad just the digital control signals Signals from an infrared receiver if used are routed down the same Cat 5 wire If more than one keypad VC201 not VC201i is to be connected to a VC224pm or VC226pm controller the wires to the keypads are paralleled continued brown 8 white brown 7 orange 6 white blue 5 blue 4 white orange 3 green 2 white green 1 VC224pm and VC226pm typical wiring diagram To have a room or zone start with the music onwhen the VC226pm powers up remove the shunt labelled S MUTE Otherwise the keypad has to be pushed or rem
5. former free and Digicom are trademarks of Knoll Systems Printed in Canada Knoll Systems Richmond BC amp Point Roberts WA COPYRIGHT 1998 2003 Kn ll Systems All Rights Reserved Knoll Systems In America In Canada tel 604 272 4555 145 Tyee Drive 11791 Machrina Way 120 fax 604 272 5595 Point Roberts WA 98281 Richmond B C V7A 4V3 systems VC224pm VC226pm Digital Four or Six Room Stereo Volume Control System INSTALLATION AND OPERATION MANUAL Version 1 4 Congratulations and thank you for choosing the Knoll digital stereo volume control system This system is designed to individually control stereo speakers in up to four or six rooms with many advanced features This product is a member of the proprietary Knoll transformer free family which are widely regarded as the finest stereo volume controls made anywhere The VC224pm has four room capability and the VC226pm has six room capability The VC220pm has one room capability Key Features 1 Transformer free sound quality Being transformer free means the best sound quality possible in all rooms without the phase and level problems associated with conventional volume controls 2 Contemporary keypad styling The VC201 keypads feature the latest Decora styling with six led power level indicators Colors are white almond and ivory and the VC201 can be ordered with internal infrared receivers VC201i VC201 keypads are all single gang 3 Individual room start m
6. if this room is to start in the louder position 12 To restore the boot up defaults replace the appropriate room shunts 0 EEEEE EE EE EE Installation Installing the digital volume control system should be relatively easy With a bit of planning it will give trouble free service for years Basic System Layout and Pre Wiring See Typical Wiring Diagram on the centerfold page The VC224pm and VC226pm make a noticeable click sound when changing volumes We suggest mounting it in a low voltage panel electrical room closet etc We do not suggest connecting more than one VC224pm or VC226pm to a single amplifier or receiver even if it is a high power model because a variety of power sharing problems can occur One or two VC201 keypads can work ona single room or zone but only one VC201i can be connected to a single VC224pm or VC226pm room or zone The VC200 keypad does not work with this system Use the standard T568A wiring practices to run a cat 5 or cat 3 wire from the keypad or controller to the VC224pm or Vc226pm If more than one keypad controls a single VC224pm or Vc226pm room daisy chain the cat wire from keypad to keypad If the VC226pmi is not located next to the stereo run a single eight conductor cat 3 or cat 5 wire run and four speaker wire conductors from the stereo to the controller for the power supply the infrared system future upgrades such as paging override and of course the steeo sp
7. onnection block power supply Then connect single or dual infrared emitters to the connection block and place the emitters on the stereo components to be controlled at the stereo location For controller based IR control of the VC226pm the IR inputs must be connected to each room RJ45 The IR signal must be common ground and are the learned signals from our RB8 remote control The RJ45 pin 3 is ground and pin 6 is IR pin counts are from the left Operation The Kn ll digital volume control is very easy to use It has a total of 17 different volume settings Volume settings affect only the room that they are in After the stereo is turned on you may or may not have sound depending on how the system was set up during installation To increase the volume in this room only push the rocker button up Hold the button up continuously and the volume will increase until maximum To lower the volume push the rocker button down Hold the button down continuously and the volume will decrease until it mutes At any time firmly press the center of the switch to mute the volume To restore the volume press the rocker button up or down The RB8 remote control source buttons do not work with the VC224pm and VC226pm as they have no source selection capabilities If infrared emitters where installed other source remote controls aimed at the VC201i keypads will control the source components On VC201 keypads the lower led indicates that power
8. ote touched to turn on this room only UUULLLI OOOO VC226pm Cabinet When the sound does come on whether or not S MUTE is selected the sound always comes on in position 6 of 17 total To make the music start in this room only at position 12 remove the shunt labelled 6 12 Labeled wrong on version 1 3 IR OUT o ROOM3 ROOM4 6 12 S Mute S Mute 6 12 6 12 S Mute S Mute 6 12 Homerun Connect the wire polarity is observed g mn ff m f aa G aa G G n 120 WATT MAXIMUM STEREO N 12vdc 500MA I cat 5 wired power amplifier s ee ee ee l speaker outputs 7 I E E e ae to the VC226pm i I I jack labelled f i i I i INPUT Sa Th Make sure proper f i el s o S Mute 012 Power supply Connect to the switched oulet on the receiver or amplifier if possible One or two VC201 keypads or one VC201i keypad can control each rooms stereo speakers Connect the one or two VC201 or one VC201i keypad to the VC226pm cabinet s correct RJ45 8 conductor connector using a home run of cat 5 wire Be sure to use a good quality RJ45 8 8 crimper Homerun _ four conductor speaker wire AMPLIFIER ROOM 1 Infrared connection module to emitters
9. ute and turn on level adjustment Each room can boot up muted or with the sound on The level of each room when the sound comes on can be installer preselected and changed later if required from either a quiet position 6 of 17 total or a louder position 12 4 One or two VC201 keypads can be connected in each room Ever need volume controls on both ends of a great room This feature is available on all Knoll digital volume controls without any extra adaptors 5 Individual room infrared remote control Each room can have its volume raised or lowered sound muted or unmuted and power on or off with the RB8 remote when a VC201i keypad is installed in that room The VC201i also passes component remote control signals to the source such as play skip AM FM etc 6 Any or all rooms can be controlled by an external controller instead of a keypad Using the VC224 or VC226 infared inputs to each room a common gr ound IR based controller can send remote commands IR Infrared Outputs The VC224pm and VC226pm feature infrared outputs from any VC201i keypads The signal gathered from most remote controls can be routed to back to the source components to control various aspects of those components play fast forward change disk change tuner channel etc To connect the VC224pm or VC226pm controller IR outputs simply connect the VC224pm or VC226pm IR connector to an infared connection block s IR receiver input without needing an IR c
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