CGN 99 HL - Microphone AKG - Free user manual and instructions

USER MANUAL CGN 99 HL AKG

Refer to figs. 9 to 14.

1. Do not spill any liquids on the equipment and do not

drop any objects through the ventilation slots in the equipment.

2. Do not place the equipment near heat sources such

as radiators, heating ducts, or amplifiers, etc. and do not expose it to direct sunlight, excessive dust, mois- ture, rain, mechanical vibrations, or shock.

3. The packaging of the equipment is recyclabe. To dis-

pose of the packaging, make sure to use a collec- tion/recycling system provided for that purpose and observe local legislation relating to waste disposal and recycling. Thank you for purchasing a Discreet Acoustics module. The Discreet Acoustics Compact Series com- prises four gooseneck microphones, one flown micro- phone, and dedicated accessories for every application and every type of venue. CGN 99 C/S (order no. 2965H00110): 380-mm (15-in.) cardioid gooseneck microphone with integrated DPA XLR phantom power adapter and external foam windscreen. CGN 99 H/S (order no. 2965H00120): 380-mm (15-in.) hypercardioid gooseneck microphone with integrated DPA XLR phantom power adapter and external foam windscreen. CGN 99 C/L (order no. 2965H00130): 576-mm (23-in.) cardioid gooseneck microphone with integrated DPA XLR phantom power adapter and external foam windscreen. CGN 99 H/L (order no. 2965H00140): 576-mm (23-in.) hypercardioid gooseneck microphone with integrated DPA XLR phantom power adapter and external foam windscreen. CHM 99 (order no. 2965H00150): cardioid flown micro- phone with spring clamp and 10-m (33-ft.) special cable with DPA XLR phantom power adapter. 1 Safety and Environment 2 Description 4457_09_AKG_BDA_GN-Compact_ps 10.09.2009 11:53 Uhr Seite 1213 2 Description

Accessories Refer to fig. 9. Refer to fig.10. Refer to fig.11. Refer to fig.12. Refer to fig.13. Refer to Table 1. Always use the supplied windscreen (unless it would be too visually obtrusive). It protects the microphone from dust and moisture, and reduces pop and wind noise to a minimum. B 18 battery power supply for all Discreet Acoustics Compact microphones. PS3 F-Lock panel mount socket for all Discreet Acoustics Compact gooseneck microphones (not for CHM 99). H 500 shock mount for all Discreet Acoustics Compact gooseneck microphones (not for CHM 99). H 600 shock mount for all Discreet Acoustics Compact gooseneck microphones (not for CHM 99). SA 60 stand adapter for all Discreet Acoustics Compact gooseneck microphones (not for CHM 99). ST 1, ST 45 table stands for all Discreet Acoustics Compact gooseneck microphones (not for CHM 99). Note that both the maximum working distance and the area covered by the microphone depend on the pickup angle. The smaller the pickup angle (hypercardioid), the longer the maximum distance between the talker and the microphone and the smaller the area covered by the microphone. Whether a cardioid or hypercardioid capsule will give the best results therefore depends on the specific application situation). 3 Microphone Applications 4457_09_AKG_BDA_GN-Compact_ps 10.09.2009 11:53 Uhr Seite 1314 3 Microphone Applications

Gooseneck Microphones Refer to figs. 9 and 12. Note: Refer to figs. 10 and 11. All Discreet Acoustics Compact microphones are con- denser microphones and therefore require a power supply (phantom power). The microphones have been designed for connection to microphone inputs with 9 to 52 V phantom power. To connect Discreet Acoustics Compact microphones to inputs without phantom power, refer to Section 4.4.

1. Use the optional PS 3 F-Lock panel mount socket to

install the microphone in a tabletop or an optional SA 60 stand adapter to mount the microphone on a floor or table stand. For even better vibrational noise rejection, you can fix the microphone to the tabletop with an optional H 500 or H 600 shock mount.

2. Use a shielded cable to connect the microphone to a

microphone input with phantom power. Table 1: Microphone applications. Microphone

CHM 99 Polar Pattern Cardioid Hypercardioid Cardioid Hypercardioid Cardioid Speaker position Beinde the micro- phone only 90° to 135° off microphone axis Behind the micro- phone only 90° to 135° off microphone axis Behind the micro- phone only Working distance 30 to 60 cm* (1 to 2 feet) 30 to 90 cm* (1 to 3 feet) 30 to 60 cm* (1 to 2 feet) 30 to 90 cm* (1 to 3 feet) 1 to 3 m* (3.5 to 10 feet) Application Sound system Sound system Sound system Sound system Sound system 4 Installation and Connection

3. If the phantom power on your mixing console is

switchable, switch the phantom power on. (Refer to the instruction manual for your mixing console.) The microphone is powered directly from the phan- tom power source on the console.

1. Prior to installing the microphone, straighten the

cable by carefully pulling it through your fingers. Make sure not to buckle or twist the cable. Let hang for 1 day to untwist.

2. Fasten a hook to the ceiling, use an existing hook, or

stretch a fishing line across the hall.

3. Pass the cable through the hook or over the line so

that it will hang at the desired height. Do not tie a knot into the cable to hang it on the hook. This may cause the cable to twist and misalign the microphone after a while.

5. Hold the cable with one hand and turn the micro-

phone carefully into the desired position.

• The cable on the CHM 99 will twist as the ambient temperature changes, e.g., in the heat generated by spotlights.

Fig. 2: Theater stage miking Fig. 3: Miking up a choir

• If you use spotlights, be sure to turn them on before aligning the microphone.

• When you turn the spotlights off, the microphone will rotate out of alignment. Upon turning the spotlights back on, the microphone should rotate back into its original position. To stabilize the microphone,

1. Leave an appropriate length of fishing line through the

eyelet on the spring clamp of the CHM 99.

2. Fix the fishing line to two opposite walls so as to cre-

Inputs Fig. 4: Input trans- former with center tap (ungrounded) Fig. 5: Input trans- former with no center tap (ungrounded)

1. Use a shielded balanced cable to connect the micro-

phone to a microphone input with phantom power.

2. If the phantom power on your mixing console is

switchable, switch the phantom power on. (Refer to the instruction manual for your mixing console.) The microphone is powered directly from the phan- tom power source. If your mixer has no phantom power, insert an external phantom power supply between the DPA phantom power adapter and mixer input. We recommend the optional B 18 power supplies from AKG. Using any power sup- plies not recommended by AKG may damage your microphone and voids the warranty. You may also consider having a qualified technician retrofit a phantom power supply as per IEC 61938 to bal- anced or unbalanced mixer inputs. The IEC 61938 stan- dard specifies a positive voltage of 12, 24, or 48 V on the audio lines versus the cable shield. If your equipment inputs are grounded or transformer- less, wire either capacitors or extra transformers into the audio lines as shown in fig. 9 above in order to prevent any current leakage into the input stage. 4457_09_AKG_BDA_GN-Compact_ps 10.09.2009 11:53 Uhr Seite 174 Installation and Connection

Fig. 7: Fixing screw. Refer to fig. 7. Fig. 8: DPA circuit board. Refer to fig. 8. The DPA phantom power adapter is equipped with a bass cut filter to minimize low-frequency noise.

1. Unscrew the fixing screw on the microphone or DPA

phantom power adapter.

2. Pull the circuit board out of the case WITH CAUTION

– so as not to break the internal leads.

3. To acitvate the bass cut filter, plug the jumper J1 into

the central contact pair on the circuit board. CHM 99 CGN