Frequency response of the 4038 is exceptionally flat from 30 to 20,000 Hz and throughout this range the shape of the bi-directional (figure of eight) polar response is maintained substantially constant both in the horizontal and vertical planes, giving a natural sonic quality with smooth frequency response.

Features:

Pressure gradient transducer ribbon microphone 

Substantially flat frequency response from 30 to 15,000 c/s

Extremely low (non-linear) distortion

Exceptionally low hum pick-up

Bi-directional (figure of eight) polar curve shape accurately maintained in both horizontal and vertical planes

Excellent transient response

Natural clear balanced response to sound signal

Body shape to enhance acoustic performance

Clear natural high fidelity sound reproduction

Smooth sonic textured response

All microphones factory tested in free field conditions

Specifications:

Ribbon: Low mass damped ribbon to control transient response

Polar Response: Bi-directional

Magnetic Fields: By use of hum neutralizing wiring and magnetic shielding of the toroidal ribbon to line transformer 30 to 40 dB reduction is achieved in response to stray disturbing magnetic fields

Frequency Response: 30 Hz to 15,000 Hz

Impedance: 300 ohm

Sensitivity: -65 dB W.R.T. IV/Pa

Distortion: Less than 1% at 125 dB SPL

Connection: By means of 4069 3 pin jack plug. Pin 1 positive - Pin 2 negative - Pin 3 screen

Body Housing: Made of heavy gauge perforated brass backed by finely woven Monel mesh. Rotating hinge connection allows microphone to tilt through 90° and turned in any direction when either suspended or free standing

Dimensions: 7¼" (197 mm) x 3¼" (83 mm) x (61 mm).

Weight: 2 lb. 6 oz. (1.08 Kg).

Finish: Black stove enamel textured paint

Packaging: Each microphone comes in a foam lined rigid plastic carrying case with 4069 jack plug, and soft cloth protective bag, for safe keeping.

Accessories:

4071B Mic to stand adapter with XLR

4069 to XLR

Soft cloth protective bag

Foam lined rigid plastic carrying case