Tram TR50 Lavalier Microphone with TR79+ Power Supply – Spares or Repair

£62.50 + VAT

A used Tram TR50 lavalier microphone & TR79+ power supply – I have tested this and the cable is faulty, there is a break in it somewhere .  Microphone element and TR79+ power supply seem to be OK

When it was introduced, the TRAM® TR50 miniature microphone revolutionized the industry- it has become the standard in feature film, television production and other areas of the entertainment industry. In addition to its diminutive size and superior sound quality, the TR-50 offers a combination of features that are simply not offered by any other microphone.

The TRAM® TR50 miniature professional lavalier microphone answers the needs of even the most demanding sound recording engineer. It has been designed with the latest electret development and electronics technology, to provide high sound quality with little or no visibility. Its small size and unique design permit a variety of uses and fastening options, that make it ideal for unobtrusive appearance and hidden mic use. The tiny omni-directional capsule features minimum sound coloration and is therefore easily combined with boom mics during post production. A variety of accessories makes mounting the mic on or under clothing easy, with reliable results.

The extended frequency response range and omni-directional characteristics have been designed to satisfy the most stringent requirements in all professional audio fields, particularly film and TV production.

The TR50 is available with a variety of connectors (Micro-Mini, Lemo (4, 6 or 8pin), Mini Switchcraft (3, 4 or 5pin), Sony, Sennheiser, etc.) For direct attachment to any wireless microphone transmitter. In addition to its use with wireless transmitters, the TR-50 can be used as a low impedance hard-wired microphone with the TR-79 power supply. 12/48v phantom powering (in addition to internal powering) is available on all TR-50*PS microphones and TR-79+ positive bias power supplies.

The TR79 power supply provides a balanced transformer output to an XLR connector and uses an Eveready 357 battery. The battery compartment is designed to permit only one insertion direction, so the polarity cannot be reversed. This compartment is accessible by turning the black plastic end cap counter clockwise and pulling firmly. The battery is removed by pushing it out with a sharp object through the hole provided in the bottom of the compartment.
TR50 Specifications:

  • Size: .18″ x .300″ x .55″
  • Type: Omni-directional electret condenser
  • Freq. Response: 40 – 16,000 Hz
  • Noise Level: 26dB equivalent SPL
  • Maximum SPL: 134dB
  • Output Level: -57dB
  • Nominal Impedance: 3,000Ω (TR-79 Power Supply – 250Ω)
  • Operating Voltage: 1.5V
  • Current Drain: 20-30 microamps (TR-79: 80-100 microamps)
  • Battery: 357 (SR44W/313)
  • Isolated Mic Element: To reduce rubbing noise
  • Bias: Negative and Positive
  • Cable: Sturdy, Flexible (TR-50BPS -9 ft. long)
  • Available mic colours: Black, Grey, Tan, or White

In stock