TECHNICAL DESCRIPTION
The modular system
The large diaphragm microphones Types 4041-S, 4041-T and
4041-SP introduce a modular cartridge and preamplifier system.
The Modular Microphone Cartridge Type MMC4041 can be
unscrewed from the Modular Microphone Preamplifiers Types
MMP4000-S, MMP4000-T and MMP4000-SP, which allows for the
exchange of the preamplifier.
The 3 types of 4041s are acoustically very similar, but differ in the
preamplifier technology. The Type 4041-S contains the solid-state
preamplifier Type MMP4000-S whereas the Type 4041-T has the
tube preamplifier Type MMP4000-T. The Type 4041-SP contains a
48V phantom powered solid-state preamplifier, the MMP4000-SP.
The cartridge
The Types 4041-S, 4041-SP and 4041-T are omnidirectional (pres-
sure) microphones that use the 24 mm (1 in) Modular Microphone
Cartridge Type MMC4041. The diaphragm and the cartridge housing
are both made of stainless steel, which gives the capsule a unique
immunity against ambient temperature variations. The MMC4041
back plate is placed in a quarts insulator for maximum electrical
stability. On the 4041-S and 4041-T, the back plate is polarised with
200V via the HMA4000 Microphone Amplifier, giving the cartridge
an extremely high sensitivity and SPL handling capability. On the
4041-SP a polarisation generator in the pre-amp is incorporated,
providing the back plate with 200V.
The microphone cartridge Type MMC4041 is designed to have a linear
on-axis response from 10 Hz to 20 kHz with a 4-6 dB soft boost around
8 kHz(see fig.3). The MMC4041 cartridge module has an extremely low
self-noise of maximum 7 dB(A) and a THD less than 0.5% at 120 dB
SPL peak which means that the cartridge has an impressive dynamic
range of 113 dB. When mounted on one of the modular high voltage
microphone preamplifiers Type MMP4041-S or MMP4041-T the micro-
phone can handle sound pressure levels up to 144 dB SPL peak before
clipping occurs. When mounted on the MMP4041-SP preamp, 134 dB
SPL peak can be handled before clipping.
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