AOW312 Operating Manual Genelec AOW312 Active On-Wall Loudspeaker Genelec AOW312 Active On-Wall Loudspeaker System The Genelec AOW312 is a three-way active loudspeaker designed for medium sized, high quality home theater applications. This system excels as side or rear channels when mounted on-wall. It also offers minimum intrusion into designed spaces while providing high sound pressure levels required when employing Genelec's large three-way systems for left, center, and right positions and HTS6 series subwoofer in rooms greater than 260 m3 / 9000 cu. ft. Designed as an active loudspeaker system, it contains multiple driver and power amplifiers, active crossover filters and protection circuitry. The unique Directivity Control WaveguideTM (DCWTM) technology developed by Genelec provides extremely stable and accurate imaging and frequency balance even in difficult acoustic environments. Furthermore, versatile and precise crossover controls allow for accurate matching of the loudspeakers systems to different room acoustic conditions. The AOW312 is fixed to the wall via unique mounting brackets which isolate and suspend the cabinet vertically. The brackets also allow the cabinets to be mounted with a ±15 degree angle offset to the wall to facilitate energy focus at desired listening locations. All electronics are factory calibrated as a single unit eliminating the effects of component tolerances and ensuring consistent quality and long term reliability. Low frequencies are reproduced by a 305 mm (12") bass driver with a low frequency extension to 35 Hz. The 130 mm (5") midrange cone and 25 mm (1") HF driver are loaded into the proprietary Directivity Control Waveguide as found on the HT312 and HT315 models. The amplifier unit contains an active crossover, the ideal method for dividing an input signal between the driver units, allowing the overall response of the system to be optimized to an extent impossible with a passive system. Variable input sensitivity as well as XLR line level input connectors provide easy connection and accurate level matching to the preamplifier or surround decoder. The bass, midrange and treble amplifiers of the AOW312 produce 180 W for the low frequency driver and 120 W each for the midrange and HF drivers. The amplifiers are designed to operate at very low THD and IM distortion values and are capable of driving the AOW312 to peak output levels in excess of 124 dB SPL at 2 m with music material. Like all Genelec HT models, the AOW312 incorporates special circuitry for driver overload and amplifier thermal protection, as well as an "Autostart" function for automatic switching between "Standby" and "On" power modes. A 12 V trigger or external switch or relay type remote control also provides power mode switching. The 7U remote amplifier modules are supplied with 19" rack-mount metalwork and Neutrik Speakon connectors are provided to facilitate wiring and system connection at customer facilities. Installation Once unpacked, place the loudspeaker in its required listening position, taking note of the line of the acoustical axis (see Figure 1). Attach the mounting brackets to the wall with suitable screws for carrying the loudspeaker's weight of 43 kgs (95 lbs). The maximum vertical tilt angle for the loudspeaker cabinet is ±5 degrees. The mounting brackets are pre-drilled for cabinet alignment angles of -15°, 0° and +15°. If necessary, you can drill new holes to the brackets for exact loudspeaker alignment. The rubber isolators provided must be placed between the brackets and loudspeaker cabinet. See Figures 3 and 4 for details. It is recommended that the surroundings of the loudspeaker are covered with about 10 cms (4") of rockwool or similar damping material. If the loudspeaker is covered with a cloth, it must be acoustically transparent and a free space of at least 2 cm (3/4") left between the 400 (15 3/4") 220 (8 21/32") TREBLE,MIDRANGE AND BASS LEVEL SWITCHES BASS TILT AND ROLL-OFF SWITCHES REMOTE CONTROL AND INDICATOR LED SWITCHES 1 -1 -2 -3 -4 dB -5 -6 MUTE USING THE TONE CONTROLS TREBLE LEVEL REFER TO THE OPERATING MANUAL FOR SUGGESTED TONE CONTROL SETTINGS. FOR ACCURATE OPERATION ONLY ONE SWITCH IN EACH TONE CONTROL GROUP SHOULD BE ON AT A TIME. FOR A FLAT FREE FIELD RESPONSE SET ALL TONE CONTROLS TO OFF. OFF ON OFF ON -1 -2 -3 -4 dB -5 -6 MUTE MID LEVEL CAL POSITION ALL TONE CONTROLS : OFF INPUT SENSITIVITY : -6dBu 47 (1 27/32") ACOUSTIC AXIS LEVEL CONTROLS dB OFF ON -1 -2 -3 -4 dB -5 -6 MUTE BASS LEVEL 0 -1 -2 -3 -4 -5 -6 BASS MID TREBLE 20Hz 400Hz 3kHz 20kHz REMOTE CONTROL OFF ON REMOTE CTRL AUTOSTART POWER LED STANDBY LED CONNECTOR REMOTE CONTROL AMPLIFIER MODE TYPE PIN NO. 1+ PIN 1 HIGH: ON 2 GND 12 V DC REMOTE PIN 1 LOW: STANDBY 3 EXTERNAL SWITCH CONTACT CLOSED: ON 4 OR RELAY CONTACT OPEN: STANDBY OFF ON -2 -4 dB -6 -8 dB 0 -2 -4 -6 -8 ALL OFF BASS TILT 20Hz 250Hz + GND REMOTE CONTROL CONNECTORS INPUT SENSITIVITY ADJUSTMENT SIGNAL INPUT CONNECTOR MAINS VOLTAGE SELECTOR, MAINS CONNECTOR AND SWITCH 2 3 4 12 V DC REMOTE EXTERNAL SWITCH OR RELAY OFF ON -2 -4 dB -6 -8 BASS ROLL-OFF dB 0 -2 -4 -6 -8 20Hz ALL OFF DO NOT USE BOTH REMOTE CONTROL TYPES AT THE SAME TIME. SWITCH THE REMOTE CONTROL DIP SWITCH ON WHEN USING REMOTE CONTROL. REMOTE CONTROL OVERRIDES AUTOSTART FUNCTION. AUTOSTART SETS THE AMPLIFIER TO STANDBY MODE WHEN THERE IS NO SIGNAL. INPUT SENSITIVITY +2 +4 +6 0 -2 -4 -6 INPUT SENSITIVITY REQUIRED FOR 100dB SPL@1m. REFER TO OPERATING MANUAL FOR MAXIMUM SPL. 100Hz dBu HT312A ACTIVE HOME THEATER SYSTEM MAGNETICALLY SHIELDED www.genelec.com MADE IN FINLAND SIGNAL INPUT 1 3 1672 (65 13/32") 1360 (53 17/32") PIN 1 = GROUND PIN 2 = + INPUT PIN 3 = - INPUT SERIAL NUMBER 1652 (65 1/32") 1500 (59 1/16") 2 MAINS VOLTAGE SELECTOR WARNING ELECTRIC SHOCK HAZARD! IT IS FORBIDDEN TO UNDO ANY SCREWS ON THIS EQUIPMENT. SERVICING AND ADJUSTMENT MUST ONLY BE CARRIED OUT BY QUALIFIED SERVICE PERSONNEL. NEVER OPERATE THIS EQUIPMENT WITHOUT A PROPER EARTHED MAINS CONNECTION. ENSURE THAT THE CORRECT VOLTAGE IS SELECTED BEFORE CONNECTING TO THE MAINS SUPPLY. THIS EQUIPMENT IS CAPABLE OF PRODUCING SOUND PRESSURE LEVELS IN EXCESS OF 85dB WHICH MAY CAUSE PERMANENT HEARING DAMAGE. MAINS INPUT 50 / 60 Hz 300 Watts 115 / 230 V ~ ON DO NOT EXPOSE TO WATER OR MOISTURE. Figure 2. Amplifier panel layout of the AOW312. Figure 1. Cabinet dimensions of the AOW312. The acoustic axis is located at the indicated height on the centerline of the loudspeaker cabinet. Figure 3. AOW312 loudspeaker cabinet top view. Figure 4. AOW312 loudspeaker cabinet top view at 15° angle. front baffle and the cloth.The reflex port of the loudspeaker cabinet is located on the left side of the cabinet (see Figure 1). The airflow from the port must not be obstructed, and a free space of at least 5 cm (2") is required before the port. Connections Each loudspeaker is delivered with two Speakon cable connectors. There is one Speakon output on the amplifier and two Speakon cable inputs (one on each side) on the cabinet. Use only one input at any time. The inputs may not be used for daisy-chaining several loudspeakers or connecting two amplifiers to a single loudspeaker. Measure the required length of cable and solder the connectors on it. Pins 1- and 1+ carry the signal for the tweeter, pins 2- and 2+ for the mid range driver and pins 3- and 3+ for the woofer. Pins 4- and 4+ are not used. See Table 1 below for recommended cable thicknesses. The whole cable should have an outside diameter of 8 to 20 mm (5/16" to Cable gauge 2,0 mm2 (14 AWG) 3,3 mm2 (12 AWG) 5,3 mm2 (10 AWG) Max. length 30 m (100 ft) 40 m (130 ft) 60 m (200 ft) 13/16") to fit in the Speakon connector. Alternatively, pre-terminated lengths of cable are available from Genelec. Be sure not to mix the amplifier/loudspeaker pairs when installing multiple loudspeakers at the same time. Each amplifier and loudspeaker delivered in the same box are marked with the same identification number and calibrated together for optimal performance. Sufficient cooling for the amplifier must be ensured. Leave at least ten centimeters (4 inches) free space above and below the amplifier to ensure cooling. The space adjacent to the amplifier must either be ventilated or sufficiently large to dissipate heat so that the ambient temperature does not rise above 35 degrees Celsius (95°F). There are no fans in the amplifier unit so it may be mounted in the listening room near the lodspeaker cabinet using a short cable. Before connecting up, ensure that the mains switch is off. Check that the mains voltage selector is correctly set to your local voltage. Audio input is made via a 10kOhm balanced XLR connector, but unbalanced leads may be used as long as pin 3 is grounded to pin 1 of the XLR. Once connection has been made, the loudspeakers are ready to be powered-up. output of the decoder or other source, by use of the input sensitivity control on the amplifier panel. A small screwdriver is needed for the adjustment. The manufacturer default setting for this control is -6 dBu (fully clockwise) which gives an SPL of 100 dB @1m with a -6 dBu input level. To get the full output level from the AOW312 an input level of +10 dBu is needed at this setting. Autostart and remote control The AOW312 is equipped with an "Autostart" function, which automatically turns the amplifier to "standby" mode if an input signal has not been detected for approximately thirty minutes, and back to "on" mode when the signal returns. The function can be deactivated by turning the "AUTOSTART" dip switch to "OFF". A two-colour LED on the amplifier panel indicates the amplifier status: green for "on" and yellow for "standby". The amplifier mode can also be switched by a remote control unit connected to the respective inputs on the amplifier. Two pairs of connectors are provided, 1 and 2 for a 12 V DC type remote control, and 3 and 4 for an external switch or relay type control. Do not connect two remote controls to the loudspeaker at the same time. Activate the function by turning the "REMOTE CONTROL" dip switch on the amplifier panel to "ON". Note Setting the input sensitivity Adjustment of the input sensitivity of each loudspeaker can be made to match the Table 1. Recommended cable thicknesses for different lengths of cable 246 (9 11/16") 181 (7 1/8") 175 (6 7/8") 15° AUDIO PRECISION AOW312 ANEC LEVEL(dBr) vs FREQ(Hz) 04 AUG 06 100 AUDIO PRECISION AOW312 ANEC LEVEL(dBr) vs FREQ(Hz) 04 AUG 06 90 85 80 95 90 85 80 75 70 100 95 90 85 80 0 15 BASS TILT 90 85 80 90 85 80 30 45 BASS LEVEL TREBLE LEVEL 65 60 BASS ROLL-OFF 20 100 MIDRANGE LEVEL 1k 10k 20k 20 100 1k 10k 20k Figure5: The curves above show the effect of the `bass', `mid' and `treble' level controls, and the `bass tilt' and `bass roll-off' controls on the free field response of the AOW312, measured at 2 m. Figure 6: The upper curve group shows the horizontal directivity characteristics of the AOW312 in its vertical configuration measured at 2 m. The lower curve is a 1/6 octave power response measurement, derived from 144 individual directivity measurements. that the remote control function overrides the "autostart" dip switch function. operating conditions, the following warnings and cautions must be observed: 1. Servicing and adjustment must only be performed by qualified service personnel. The amplifier must not be opened. Do not use the loudspeaker with an unearthed mains cable or unearthed mains connection as this may lead to personal injury. This loudspeaker is capable of producing sound pressure levels in excess of 85 dB, which may cause permanent hearing damage. A free flow of air around the amplifier is necessary to maintain sufficient cooling. Do not obstruct airflow around the amplifier To prevent fire or electric shock, do not expose the unit to water or moisture. Do not place any objects filled with liquid, such as vases on or near the loudspeaker or the amplifier. Note that the amplifier is not completely disconnected from the AC mains service unless the mains cable is removed from the amplifier or the mains outlet. EC Declaration of Conformity This is to certify that the Genelec AOW312 Active On-Wall Loudspeaker conforms to the following standards: Safety: EN / IEC 60065:1998 6th Edition EMC: EN 55020 : 2002 + A1 : 2003 EN 55013: (2001) EN 61000-3-2 (2000) EN 61000-3-3 (1995) The product herewith complies with the requirements of The Low Voltage Directive73/23/EEC, EMC Directive 89/336/ EEC and 93/68/EEC Signed: Position: Date: Ilpo Martikainen Chairman of the Board 14-August-2006 Setting the tone controls The acoustic response of the system should be adjusted to match the acoustic environment. The adjustment is done by setting the five tone control switch groups `bass tilt', `bass roll-off', `bass level', `mid level' and `treble level' on the amplifier panel. The manufacturer's default setti ...