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Mods for the 4000

  • Microphone PartsMicrophone Parts
    The RK-47 capsule upgrade for the MXL 4000 fixes the mic’s hyped high frequencies, replacing the bright presence peak (+12dB @ 12kHz) with a flatter HF rise (+4dB @ 5kHz).

OmnidirectionalCardioidBidirectionalMXL 4000

Multi-Pattern Condenser Microphone

The MXL 4000 is a large-diaphragm multipattern FET condenser mic.

Part of MXL’s “900 Series” of mics, it sells for significantly less than its $799 MSRP. For example, street prices as of May 2009 were under $200. The “900 Series” is manufactured by MXL exclusively for Guitar Center and its various online sales divisions, including Musicians Friend, Music 123, and the Woodwind and Brasswind.

The mic has a single dual-sided, large-diaphragm, K67-style capsule measuring 25mm in diameter. It provides 3 pickup patterns, selectable via a switch on the mic body beneath the headbasket.

Additional switches on the rear of the mic body enable a pad (-10dB) and high-pass filter (-6dB/octave @ 150Hz).

MXL-60 ShockmountThe mic ships with an elastic shockmount (MXL p/n MXL-60) and a foam windscreen (p/n MXL WS-002).

Permalink: MXL 4000


Frequency Response - CardioidClick Graph to Compare!
4000 Cardioid Frequency Response Chart
Pickup Patterns Pads & Filters
Omnidirectional (15 mV/Pa; 20 - 20,000 Hz)
Cardioid (15 mV/Pa; 20 - 20,000 Hz)
Bidirectional (15 mV/Pa; 20 - 20,000 Hz)
  • Pad: -10dB (Via Switch)
  • Filter: HPF: -6dB/octave @ 150Hz (Via Switch)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 25mm
Diaphragm gauge: 6 microns
200 Ohms (Low) Max SPL: 130 dB
Self-noise: 20.0 dB(A)
Weight Length Max Diameter Interface(s)
725g (25.57oz) 240mm (9.45'') 59mm (2.32'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 48 ± 4v

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