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Pearl Microphone Laboratory DT 40

Multi-Pattern Tube Condenser Microphone

The DT 40 is a multipattern tube condenser microphone using Pearl’s trademark rectangular capsule. It shares a capsule design, body, tube, and circuitry with the single-pattern CT 40.

The rectangular capsule measures 17x35mm, with twin polyester diaphragms measuring 14x29mm. The diaphragms are metallized with a very thin coating of aluminum.

Read more about the properties and characteristics of the rectangular diaphragm.

The amplifier circuit uses a Nuvistor tube. The output circuit is transformer-coupled.

The DT 40 ships with a dual-voltage power supply (model D4020), 10m 7-pin cable, elastic shockmount (model 1942), and a flight case.

Note that the power supplies for the CT40 and DT40 differ, as the DT40 supply provides a pattern switch and requires a different cable.

Tape Op, 2005

As an engineer, you come off as a frickin’ genius when you use this mic, as it’s impossible to find something it sounds bad on.

The Pearl Microphone Laboratory DT 40 is also known as: DT40.

The mic was released in 2003.

Specifications

Pickup Patterns	Pads & Filters
Omnidirectional (20 mV/Pa; 20 - 25,000 Hz) Cardioid (20 mV/Pa; 20 - 25,000 Hz) Hypercardioid (20 mV/Pa; 20 - 25,000 Hz) Bidirectional (20 mV/Pa; 20 - 25,000 Hz) Wide Cardioid (20 mV/Pa; 20 - 25,000 Hz)

Capsule Dimensions	Impedance	SPL/Noise
Diaphragm diameter: 14mm Capsule diameter: 29mm	100 Ohms (Low)	Self-noise: 16.0 dB(A)

Weight	Length	Max Diameter	Interface(s)
470g (16.58oz)	160mm (6.30'')	43mm (1.69'')	3-pin XLR male (1)

Power Specifications
Includes tube power supply

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