Assessments - 1, GPA: 3
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phone to a microphone input with phantom power. 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- Connection 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 supplies 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 balanced or unbalanced mixer inputs. The IEC 61938 standard 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. (Text) 4.4 Connecting to Inputs without Phantom Power 4.4.1 Balanced Inputs Fig. 4: Input transformer with center tap (ungrounded) Fig. 5: Input transformer with no center tap (ungrounded) 4 Installation and Connection 4.4.2 Unbalanced Inputs Fig. 6: Unbalanced input stage Table 2: Standard val- (Text) VDC Rv 2 x Rv* 12 V ±2 V 330 . 680 . 24 V ±4 V 680 . 1,200 . ues for Rv and 2 x Rv 48 V ±4 V 3,300 . 6,800 . * In order to satisfy the IEC 61938 symmetry requirement, make sure the actual values of the two resistors 2 x Rv do not differ by more than 0.5%! 4 Installation and Connection The DPA phantom power adapter is equipped with a bass 4.5 Bass Cut cut filter to minimize low-frequency noise. CHM 99 CGN 99 ... 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. (Text) Fig. 7: Fixing screw. Refer to fig. 7. 3. To acitvate the bass cut filter, plug the jumper J1 into the central contact pair on the circuit board. Fig. 8: DPA circuit board. Refer to fig. 8. (Text) 5 Specifications Microphone CGN 99 C/S CGN 99 C/L CGN 99 H/S CGN 99 H/L CHM 99 Type Pre-polarized condenser microphone Polar pattern Cardioid Hypercardioid Cardioid Frequency range Sensitivity 70 to 18,000 Hz 18 mV/Pa -35 dBV* 50 to 19,000 Hz 12 mV/Pa -38 dBV* 70 to 18,000 Hz 18 mV/Pa -35 dBV* Max. SPL for 1% THD 125 dB 125 dB 125 dB Equivalent noise level <21 dB-A <21 dB-A <21 dB-A Signal/noise ratio (A-weighted.) >73 dB >73 dB >73 dB Electrical impedance <600 . <600 . <600 . Receommended load impedance >2000 . >2000 . >2000 . Power requirement 9 to 52 V phantom power to IEC 61938 (DPA adapter integrated) Current consumption <3 mA <3 mA <3 mA Connector XLR-3 XLR-3 XLR-3 Finish matte black matte black matte black Size (capsule dia. x length) 13.5 x 380 mm (0.5 x 15 in.) 13.5 x 580 mm (0.5 x 23 in.) 13.5 x 380 mm (0.5 x 15 in.) 13.5 x 580 mm (0.5 x 23 in.) 13.5 x ...
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Fones de ouvido & microfones - CGN 99 H/S (2.94 mb)