Mains Supply
The HMA5000 can be operated from either 120 V/60 Hz or 230
V/50 Hz external powering, and automatically switches to the appro-
priate power setting when connected. The AC mains supply for the
HMA5000 is connected via the 3-pin IEC 320 connector, which
accepts the mains cable supplied. Maximum power consumption is
15 W. Please take care that the HMA5000 is properly grounded. The
mains fuse needs only to be checked if the power indicator on the
front of the HMA5000 fails to light. See the chapter ‘Changing the
Mains Fuse in HMA5000’.
Optional accessories - Cables
Special high-voltage microphone cables can be obtained as an optional
accessory for the HMA5000 (see Accessories Available)
The DPA microphone cables consist of oxygen free copper strands in
both conductors and shield. The tightly woven shield has 98% cover-
age and therefore has an extremely efficient noise rejection. Custom
lengths of high-voltage microphone cable up to 20 m (66 ft) can be
ordered. Please contact your local DPA Microphones representative
if you require custom cable lengths.
Optional accessories - HTP4000 Phantom Converter
The HTP4000 High-Voltage to Phantom Converter connects to the
input socket of the HMA5000 and converts the high-voltage micro-
phone input channel to a P48 microphone input channel of extremely
high quality. The HTP4000 uses a standard 3-pin female XLR-connec-
tor on the audio input, and a modified 7-pin male XLR-connector
where it connects to the HMA5000. Using standard DPA micro-
phones 4006, 4007, 4011, 4015 or 4041-SP with the HMA5000 and
the HTP4000, the absolute phase is preserved with the output
switch in position 0°.
5
The Power Supplies
The HMA5000 supplies 130 V DC to the built-in preamplifiers of the
High-Voltage Microphones Types 4003, 4004, 4012, 4016, 4041-S,
and 4041-T via pin 2 on the modified 7-pin input connector on the
HMA5000, giving the microphones an extended SPL handling capability
compared to P48 powered microphones. Furthermore, the
HMA5000 has 190 V DC on pin 5 for polarisation voltage and 6.3 V
DC on pin 6 for tube heating (re pin 3). See Fig. 2.
4
1
2
3
4
5
6
7
Fig. 2. External view of the modified 7-pin input connector of the
HMA5000.
Modified 7-pin XLR pinouts:
Pin 1: Ground
Pin 2: +130 V Microphone Preamplifier Voltage
Pin 3: Heater return (65 V DC potential)
Pin 4: Microphone input
Pin 5: +190 V Microphone cartridge polarisation
Pin 6: +6.3 V Heater Voltage (Re pin 3)
Pin 7: Blinded
All voltages measured with reference to
ground unless otherwise stated
MANUAL DPIHMA5000 26/08/04 11:12 Side 4