The Telefunken Elektroakustik U48 Tube Microphone is a recreation of the historic U48, one of the most iconic microphones ever produced.
The U48, a historically accurate U47 variant, features Figure-8 instead of Omnidirectional as its secondary polar pattern and is easily distinguishable by its red polar pattern logo. According to the book Recording The Beatles, the U48 was one of George Martin's favorite microphones when recording the Beatles. The bi-directional capability can be very useful in more 'ambient' recording environments where the engineer recording the sound does not want hear as much of the room ambience as might be recorded with an omni-directional or cardioid pick-up pattern
Ten years subsequent to the release of the ubiquitous U47, the U48 was released with one variation to the U47; it had "bi-directional" (figure 8) capability. While the head assembly from a U47 can be fitted to a U48 amplifier, the same does not work in reverse. A microphone's capsule is often made of two sides. The front diaphragm will produce a cardioid response, as will the rear. When the two diaphragms are polarized in the same polarity an "omni-directional" effect is achieved. When they are polarized in opposite polarity a figure 8 pattern is created.
This is not an acoustic pattern creation; it is an electronic pattern creation. All microphone capsules are omni-directional in the low frequency regions of their response. As you climb the frequency spectrum the capsule will have a more directional response. When you have two identical diaphragms with identical voltage to those diaphragms you will have a smooth "omni-directional" response. When those voltages are reversed, an electronic cancellation of common information is achieved; the result is two "lobes", one on the front of the microphone, one on the rear of the microphone, with full frequency cancellation through the frequency range achieved through electronic cancellation.
Telefunken Elektroakustik U48 Tube Microphone Includes
- Classic punchy, mid-forward sound with pleasing bite
- Legendary extended low frequency response
- Cardioid and Figure 8 polar pattern selection
- US-made historically accurate M7 center-terminated capsule
- TELEFUNKEN Elektroakustik VF14K vacuum tube
- Point-to-point wired in the USA true to the original design
- Includes American-made vintage-compatible cable and fully regulated power supply
Telefunken Elektroakustik U48 Tube Microphone Specifications
- Type: Vacuum Tube Condenser
- Polar Pattern: Cardioid, Figure-8
- Frequency Range: 20 Hz – 20 kHz, ±3 dB
- Power Source: External Power Supply
- Capsule: TELEFUNKEN Elektroakustik M7 – Center Terminated Large Diaphragm
- Tube: TELEFUNKEN Elektroakustik VF14K
- Transformer: TELEFUNKEN Elektroakustik BV8
- Sensitivity: 24.5 mV/Pa, ±1 dB
- THD at 1kHZ at 1Pa (Amplifier): < 0.3%
- Output Impedance: 200 Ω
- Maximum SPL (for 1% THD): 127 dB
- S/N Ratio: 85 dBA
- Self Noise (Amplifier): 9 dBA
- Dimensions: 240 mm L x 60 mm Dia
- Weight: 620 g
Telefunken Elektroakustik U48 Tube Microphone Includes
- Telefunken Elektroakustik U48 Tube Microphone
- Power Supply
- Sommer Tube Microphone Cable (10 Meter)
- Shock Mount
- Locking Flight Case
- Wooden Microphone Box
- Manufacturer Warranty
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