Installation and Operation
Contents
1. 1 3 2 E VAlZE0ON een 19 3 Ground Lil een seen Active Studio Monitor O 110 Figure 2 Rear panel of the O 110 1 6 Mains Power Fuse 1 7 Display Functions 1 7 1 Overload Protection 1 8 Care of the Cabinet 2 Diagrams 3 Warranty Information 4 EC Declaration of Conformity 5 Technical Specifications a l Fr l E ee rira an ideas eee ge oe 1 Lets i Frese een Fa E MHAD SALE PPA i hag Lei En re ini ALLY ELSE Page 3 1 Installation and Operation It is absolutely essential that you read and observe the Safety Instructions on page 2 before connecting or using this device 1 1 Operating Conditions The K H model O 110 active studio monitor is intended for use over a range of ambient temperatures from 10 C to 40 C 50 F to 104 F During transport or storage temperatures from 25 C to 70 C 13 F to 158 F are permissible 1 2 Installation The loudspeaker chassis used in the O 110 are magnetically shielded allowing these loud speakers to be mounted side by side with a video or computer monitor without adversely affecting the screen One of the finer features of the O 110 active studio monitor is its unusually uniform off axis directivity which results in a very wide sweet spot Preferred placement of the cabinet is in the upright position for the dispersion in the verical plane was intentionally kept narrower tha2. evident in the test plots presented in Figures 6 and 7 Active Studio Monitor O 110 Freg Response O 110 0 1100 Fi TCE wih Hill NEN CC TEE TEL 2 05 TO kHz 30 ao Figure 8 Frequency Response free field Graup etary i Il AU EI EI 0 05 PO kite G itO fo roe Figure 10 Group Delay Freg fesp OF 110 O 1700 EQ Boss EQ Mid 20 dB l J f 3 Sa 14 WHE Figure 12 Equalization BASS upper set of curves and MID lower set of curves Active Studio Monitor O 110 Figure 9 THD 2 nd and 3 rd order distortion 95 dB SPL and 1 m distance i Fa ae Fi 7 i moe mE are rere fj fog u ER F IE Pf PPh pao me Go oe ee tee ry Fi ty u me i li J REFFEN errr HR EEFE 5 l Io Ha idm Ho 0 mits 7 r r tL nE Figure 11 Cumulative Spectral Decay Plot The loudspeakers cumulative spectral decay plot indicates a very clean decay without any major resonances or standing waves being evident Page 7 3 Warranty Information All K H products undergo an extensive procedure of quality control testing before leaving the factory Before semiconductors are mounted on the circuit board they are subject to rigorous tests Every single unit is guaranteed to match its technical specifications within strict predetermined tolerances Please store the original carton in a safe dry place If you should ever ne
3. 1 mounting bracket LH 28 tripod bushing LH 31 mounting bracket required LH 29 TV spigot LH 31 mounting bracket required LH 27 ball clamp mount LH 31 mounting bracket required LH 7 or LH 8 adaptor LH 31 mounting bracket required LH 32 wall bracket C 15 eyebolt KG 30 ball clamp mount Active Studio Monitor O 110 Page 9 K H Vertriebs und Entwicklungsgesellschaft mbH 30900 Wedemark Germany Phone 49 5130 58 48 0 Fax 49 5130 58 48 11 www klein hummel com Printed 12 07 518114
4. Klein Hummel 0110 Active _ Studio Monitor Installation and Operation Safety Instructions It is absolutely essential that you read these safety instructions carefully before connecting and using this K H product Your safety depends on it Furthermore failure to follow these instructions voids the warranty To ensure safe operation for years to come keep these instructions in a safe place for future reference K H has manufactured this product in accordance with IEC 92 SEC 39 standards then tested and delivered it in safe operating condition To maintain it in this condition you must e observe all safety instructions e use the product only as described herein e have any maintenance repairs or modifications performed only by K H or other authorized personnel and e ensure that the room in which you use this product is wired in accordance with the local electrical code Warning When the interior of the cabinet is exposed touching some parts can lead to an electric shock If you need to gain access to the interior electronics of the unit always disconnect the unit from any and all power sources first Any repairs maintenance or other service of the unit when its interior compartment is exposed may only be performed safely in accordance with VBG 4 by authorized technicians familiar with all the risks involved Even in an unplugged state a fully charged capacitor in the unit can zap the unsuspecting Loudspeaker outp
5. e Figure 2 Equalization section serves to alter the frequency response of the loudspeaker to compensate for the overemphasis of low frequencies that may result from the specific location at which the speaker is placed within the room Active Studio Monitor O 110 F Position 0 free standing Position 1 placement a short distance before a wall Position 2 placement flat against a wall Position 3 placement in a corner ofthe room 1 5 2 2 MID Switch If the loudspeakers are placed on the meter bridge a certain overemphasis in the midrange will typically result Next to the four position switch for room compensation which we just described there is another four way rotary switch labeled MID The four switch settings are intended for the following kinds of placement Position 0 free standing Position A placement on a table top Position B free standing on the meter bridge Position C on the meter bridge between other equipment directly on either side or built into a wall Note Since it is not possible to list all possible combinations of speaker placement and room acoustics we strongly recommend checking the switch settings acoustically or by measurement The frequency response curves of both equalizers are shown in Figure 12 in section 2 diagrams 1 5 3 GROUND LIFT Since the input is balanced a ground loop hum will rarely occur In special cases or if the source signal is unbalanced it can become nec
6. ed warranty service put the unit in its original packing material and carton together with a detailed description of the problem and ship it freight prepaid to our distributor K H warrants that the product is free from any defects in both material and manufacturing and that it meets the specifications A warranty case can only be acknowledged under condition that the complaint is filed to our distributor or to us in writing within 8 days after delivery or detection of the fault Not covered under this warranty are damages due to inexpert packing and shipment wear and tear improper handling installation operation and maintenance The limitation period for warranty claims is described in the terms and conditions of K H GmbH Its our choice to repair to supply a new product or to withdraw from the contract In the event warranty service is required presentation of a warranty card will not be necessary Proof of purchase date can be made by filing copies of appropriate documents invoice delivery note 4 EC Declaration of Conformity This equipment is in compliance with the essential requirements and other relevant provisions of Directives 89 336 EC and 73 23 EC The declaration is available on the internet site at www klein hummel com Before putting the device into operation please observe any respective country specific regulations Page 8 Active Studio Monitor O 110 5 Technical Specifications O 110 Maximum SPL i
7. essary to separate the signal ground from chassis ground To do so first unplug the mains cable from the mains socket of course then unscrew and remove the back panel which has the amplifier electronics mounted directly to it Figure 4 shows the amplifier a ee a J Ar ca N a Pe je di TE 15 ar a i ira F il ja a a re igure 4 Ground Lift Connection Active Studio Monitor O 110 A 1 6 Mains Power Fuse circuit board below the XLR jack The arrow is pointing to a jumper which by default bridges the two pins If you remove the jumper the signal ground is lifted from the chassis ground Of course the chassis ground always remains connected to the protective earth conductor Warning The protective earth conductor must never be interrupted even for test purposes This may be dangerous to life Should you ever need to replace the power fuse please ensure first of all that the unit is unplugged from the mains and that only the following type and value of fuse is used For 230 240 volts AC 1 A Slo Blo 5 x 20 mm For 117 volts AC 2 A Slo Blo 5 x 20 mm For 100 volts AC 2 5 A Slo Blo 5 x 20 mm 1 7 Display Functions The illuminated K H logo serves as a status display for the loudspeaker when the power switch is on and the fuse is intact Continuous red Normal operation internal supply of power is in order Overload protection circuitry engaged Blinking red If the light is blin
8. king this indicates that the overload protection circuitry has been triggered Among the things that can trigger it are the scrubbing of analog tape in cue mode extremely bass heavy signals or the sine wave signals that are used in performing measurements The protection circuitry limits the output power of the amplifier to a level that is safe for the speaker If the output level should drop as in one of these cases check for the cause and if necessary reduce the monitoring level 1 7 1 Overload Protection As we just described above the protection circuit limits the signal to safe levels This occurs so gradually that under certain circumstances you may not even notice that the protection circuitry has been triggered and the signal is being limited in dynamic range But by moving an internal jumper you can change how this circuit responds so that when it is activated it will cause a clearly audible drop in level hard position To access this jumper unplug the mains cable from the mains socket unscrew and remove the rear panel on the other side of which you will find the amplifier Page 5 Figure 5 Jumper for Overload Protection Circuit 2 Diagrams The outstanding acoustic impression made by the O 110 is confirmed by measurements using today s most critical test methods The test plots shown here electronics In Figure 5 the arrow points to the spot on the input circuit board where the jumper is l
9. n half space 3 THD at 1 m distance 107 7 dB SPL averaged between 100 Hz and 6 kHz Free field frequency response 58 Hz 20 kHz 2 dB Self generated noise level at 10 cm lt 20 dB A Total Harmonic Distortion 150 Hz and above 1m lt 0 5 90 dB SPL Directivity Horizontal 40 6 dB Vertical 30 6 dB Electronics Power amplifiers Bass amplifier 50 W at 6 Ohm THD lt 0 1 Treble amplifier 50 W at 6 Ohm THD lt 0 1 Crossover section Crossover frequency 2 5 kHz Crossover slopes 24 dB octave Protection circuit against overload of both drivers Input Impedance 14 kOhm electronically balanced 14 kOhm transformer balanced floating Sensitivity 6 dBu Volume control continuously variable from 0 24 dB Common mode rejection ratio gt 50 dB 15 kHz Equalization 4 position switch positioning on mixing console 0 1 5 3 5 dB 4 position switch positioning on rear side walls 0 2 5 5 7 5 dB Drivers magneticallay shielded Bass 5 5 Composite Sandwich Diaphragm Treble 1 Titanium Fabric Dome Tweeter Connectors Mains 3 terminal Euro connector Signal input XLR connector 3 pin female Power consumtion Idle 10VA Full power 70VA Mains 230 V or 120V or 100V fixed verify label on device Dimensions WxHxD 170 x 267 x 190 mm 6 7 x 10 5 x 7 5 Volume 8 6 liters 0 30 cubic feet Weight 5 0 kg 11 pounds Cabinet finish enamel anthracite RAL 7021 or silver RAL 9006 Accessories LH 3
10. n in the horizontal In certain cases for example if there are hard reflective surfaces both to the left and right of the loudspeakers it would make sense to operate the loudspeakers on their side The reduced horizontal directivity in this position would then be helpful in minimizing any phase cancel lation caused by comb filter effects When considering placement please take into consideration the possibilities offered by both of the room compensation switches described in section 1 5 2 On the back of the unit you will find two M8 style threaded bushings for use with various mounting options These holes are labeled Speaker mount option The bushings will accommodate either the LH 32 wall bracket adapter or the LH 31 mounting bracket for use with additional mounting accessories The plastic screws that occupy these threaded holes from the factory may not be used for the actual mounting of a loudspeaker under any circumstances Please ensure that these threaded holes are always plugged so that the volume of air sealed within the cabinet may only pass through the precisely calculated bass reflex openings Page 4 Tr V 1 3 Connection to Mains Current The amplifier electronics within the O 110 are set up for an AC line voltage of 230 volts 50 or 60 cycles per second For export special versions with other AC voltages are also available If it becomes necessary to use a different mains cable plug pay atte
11. n the path of direct sunlight and keep it a safe distance away from radiators and other heaters of any kind If you bring this product from a cold environment into a warm one such as from a vehicle into a studio it is quite possible that condensation will form inside the cabinet Please allow the unit sufficient time for acclimatisation to room temperature minimum thirty minutes before connecting and powering up To avoid accidents do not use any accessory equipment with this product which is not approved by the manufacturer particularly mounting accessories Do not place this unit on any unstable platform cart stand or table Should the unit fall it can cause bodily injury to persons or can be damaged itself To protect this product from lightning damage during a thunderstorm or from power surges during an extended absence disconnect the power cable from the wall outlet Page 2 Active Studio Monitor O 110 Active Studio Monitor KLEIN HUMMEL O 110 Installation Operation Figure 1 Front view of the O 110 Table of Contents Safety INSTUCT ONS iss cnccncsenecer sacnnnencseanmerasseapensccaseencnete Table of CONICINS nee 1 Installation and Operation cccccesceeeseeeeeeees 1 1 Operating CONGIIONS steecandexsencticccecanentexnreneneds 1 2 Mtalaa Ossis 1 3 Connection to Mains Ourrent 14 POWER SWIICH ee ee 1 5 Level Room Compensation Ground Lift 1 5 1 Input Level Adjustment
12. ntion to proper grounding when wiring a replacement plug 1 4 POWER Switch When you switch power on there is a 7 second delay before the amplified signal is sent to the loudspeakers This delay avoids the loud popping sounds that otherwise are generated by prior devices in the signal chain as they are switched on You will find this arrangement particularly useful if your studio uses a master switch to power up all the equipment at once When power on the O 110 is turned off on the other hand or if there is a general power failure in the area the signal flow to the speaker is immediately stopped preventing any loud pops 1 5 Level Room Compensation Ground Lift 1 5 1 Input Level Adjustment The sensitivity of the electronically balanced input is rated at 6 dBu 1 55 volts The three pole female XLR jack is wired in the standard manner pin 1 ground pin 2 pin 3 negative If you are connecting unbalanced sources you will need to solder a bridge between pins 1 and 3 2 m r en Net unbalanced balanced as seen from solder terminals of male XLR Figure 3 Pin layout of input connector Directly beside this XLR jack you will find the ATTENUATOR pot which allows for smooth gra dual damping of the input signal by anywhere from O to 24 dB As an option you can order the O 110 with transformer balanced inputs 1 5 2 Equalization 1 5 2 1 BASS Switch The four position rotary switch labeled BASS se
13. ocated next to the XLR input jack 1 8 Care of the Cabinet The cabinet housing of the K H O 110 active studio monitor has a painted finish Handle the cabinet with care to avoid damaging the finish To clean the cabinet use a soft cloth with a mild cleaning agent only To clean the cabinet use a soft cloth with a mild cleaning agent only Under no circumstances should you use chemical agents or any cleaners with abrasive action and on the next several pages are but a small sampling of these measurements 20 Directivity Pioi 0 11070 1100 arizona mel TILT III IIIT EEREENEENEREEEEEEEET SERRE IP SS Pe SE SRE SESE SRR TE EE JESS BES BERS 2 n i JEEEEEEEEEEEEEER ATITTETTTeTTteTeT eee eee SERRE i k EENEN nn n n E E E SER Ree EEEE EENEN EEEE L BERR EERE CTT rr TT ELELEE LELETTO 1a Rn Ball Der a 1 Ms Using the new material LRIM Low Resonance Inte gral Molding allowed us to seamlessly integrate a waveguide into the baffle that is ideal for optimal dispersion So an elliptical horn for the tweeter was Page 6 Figure 6 Horizontal Directivity aie a Cia 23 EEREEE Ef toe en HER ii PRT niig FETT B 12 a run E i E i i mi ai aa Figure 7 Vertical Directivity u HEE wonm Be H Beir a m B iji i E 1E 15 Bef 18 ean Ha added Thus came to be the dispersion pattern we mentioned earlier which is narrower vertically and broader horizontally as is clearly
14. rent AC line voltage Always check before connecting the power cable to the mains socket that the power switch on the unit itself is set to off O Use the power cable or power supply that came with the unit to connect to the mains socket wall outlet Power supply a damaged power cable may not be repaired Use a new cable Avoid plugging the mains cable into a power strip that already has several other power consuming devices connected to it Avoid using extension cables The unit must be connected to a mains socket close to it and that socket should be freely accessible Installation This product may only be placed on a stable clean horizontal surface Do not expose this product to vibration Do not operate this product anywhere near water or other liquids Do not use it near a sink swimming pool bathtub or in any damp room or area Electrical shocks carried through water can kill Do not place any beverages whatsoever on or near this product as liquids can kill electronic components Ensure sufficient ventilation around the product to allow for adequate heat dissipation especially near the rear panel and the sides of the cabinet minimum of 8 inches from the nearest wall The unit may only be installed in a rack if measures are taken to ensure sufficient ventilation and if the mounting instructions of the manufacturer are followed Do not block or cover any heat sink fan or vent Do not place the product where it will be i
15. ut jacks labeled with the IEC 417 5036 emblem Fig A right may be carrying dangerously high voltages If your unit has this emblem ensure that any connections to be made between these jacks and the speakers themselves are made before powering up the unit and are done so only with manufacturer approved interconnecting cables If you need to replace any fuses ensure that the replacements are of exactly the same type value and voltage as the originals as spelled out in the technical specifications at the rear of this manual Do not use repaired fuses If you do not have any fuses on hand of the specified size type and value do not hot wire the contacts in the holder by short circuiting them Certain areas of the cabinet cover and rear panel can achieve extreme temperatures and are therefore marked with a HOT label Fig B Refrain from touching any heat sink or ventilation grille High volume levels are known to cause permanent i e irreversible hearing damage especially when listened to without sufficient breaks The higher the levels the more frequent and extended must be the breaks Avoid standing too close to loudspeakers that are being driven at high levels If you must be exposed to high sound pressure levels over an extended period of time use hearing protection Fig B Mains Connection This unit is designed for continuous operation Ensure that the operating voltage of the unit matches that of the local mains cur
Download Pdf Manuals
Related Search