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CardioidLewitt Professional Audio DTP 640 REX

Multi-Pattern Condenser Microphone

Lewitt Professional Audio DTP 640 REX

Description

The 640 REX is a dual-element microphone designed specifically for use on kick drums. It is conceptually similar to Audio-Technica’s ATM250DE, in that it has both a dynamic and a condenser capsule, each tuned to capture a different aspect of the drum’s sound.

The dynamic capsule has a sensitivity of 2.5mV/Pa, and a frequency-response curve similar to many kick-drum mics, with peaks around 100Hz, and 4kHz–5kHz. It captures the attack of the beater.

Lewitt 640REX dual capsulesThe condenser element is a back-electret design, with a sensitivity of 6.3mV/Pa. Its native frequency-response is flat from 30Hz to nearly 2kHz, with a ~3dB presence peak above 2kHz. It captures the resonance of the drum shell.

The self-noise of the condenser capsule is high at 26dBA, but in a high SPL environment like a kick drum, this is unlikely to present problems.

Switches on the mic body alter the response characteristics of the condenser capsule and its head amp. A 3-way pad offers -10dB and -20dB attenuation. A second 3-way switch provides a high-pass filter; when enabled, it rolls off the low end at 12dB per octave below either 40Hz or 80Hz.

The two capsules have individual outputs, via a 5-pin XLRM jack on the microphone body. The mic includes a 4m breakout cable, XLR-5F to 2xXLR-3M.

Pricing has not yet been announced.

Permalink: Lewitt Professional Audio 640-REX

The mic was released in 2010.

Specifications

Pickup Patterns Pads & Filters
Cardioid (6.3 mV/Pa; 20 - 20,000 Hz)
  • Pad: -10dB (Via Switch)
  • Pad: -20dB (Via Switch)
  • Filter: HPF: -12dB/octave @ 40Hz (Via Switch)
  • Filter: HPF: -12dB/octave @ 80Hz (Via Switch)
Capsule Dimensions Impedance SPL/Noise
Diameter n/a
 n/a Max SPL: 168 dB
Self-noise: 26.0 dB(A)
Weight Length Max Diameter Interface(s)
725g (25.57oz) 158mm (6.22'') 71mm (2.80'')
  • 5-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 48 ± 4v

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