TELEFUNKEN TF47 Matched Pair — Microphone
TELEFUNKEN TF47 Matched Pair — Microphone
TELEFUNKEN TF47 Matched Pair is a stereo set of two TF47 large-diaphragm tube condenser microphone systems.
Specifications
Matched Pair
| Product type | Matched pair of large-diaphragm tube condenser microphone systems |
|---|---|
| Matching | Sequential serial numbers; matched within +/-1 dB of gain from 20 Hz to 20 kHz |
| Stereo set contents | Two matched microphones, stereo multi-pattern power supply for TF47 stereo set, two tube mic cables, two shock mounts, two stand mounts, stereo flight/carry case and sleeves |
Transducer and Circuit
| Microphone type | Vacuum tube condenser |
|---|---|
| Polar patterns | Cardioid, omnidirectional and figure-8 |
| Capsule | All-brass K47-style / TK47 center-terminated large diaphragm capsule |
| Tube | NOS Philips/Raytheon 5840W vacuum tube |
| Transformer | TELEFUNKEN Elektroakustik BV8 transformer |
Electrical
| Frequency range | 20 Hz-20 kHz +/-3 dB |
|---|---|
| Sensitivity | 22 mV/Pa +/-1 dB |
| Thd | <0.3% at 1 kHz at 1 Pa, amplifier |
| Output impedance | <300 ohms |
| Maximum spl | 125 dB SPL for 1% THD |
| Self noise | 10 dBA |
| Signal to noise | 84 dBA |
Power and Handling
| Power source | External tube microphone power supply; TF47 stereo set uses M901S stereo multi-pattern power supply |
|---|---|
| Warmup | Manual recommends 10-minute warmup for TF47/other tube models |
Fit and constraints
Intended use
Constraints
To use it
Questions
Which connections, drivers, operating systems, and sample rates are supported by this exact revision?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
What cables, mounts, power supplies, or licenses are included?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Is the current retailer listing new stock, demo stock, open box, or special order?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Description
TELEFUNKEN TF47 Matched Pair is a stereo set of two TF47 large-diaphragm tube condenser microphone systems. TELEFUNKEN describes the TF47 as a 5840W vacuum-tube, three-pattern tube microphone system built around an all-brass K47-style capsule, NOS Philips/Raytheon 5840W tube and TELEFUNKEN Elektroakustik BV8 transformer. The Alchemy Series manual states that stereo sets include two precision gain/frequency matched microphones, two accessories and a stereo multi-pattern power supply for TF47/TF51/TF39 sets. Retailer matched-pair data states the two TF47 microphones are sequentially serial numbered and matched within +/-1 dB of gain between 20 Hz and 20 kHz. Published TF47 specifications include cardioid/omni/figure-8 patterns, 20 Hz-20 kHz +/-3 dB frequency range, 22 mV/Pa sensitivity, <0.3% amplifier THD at 1 kHz/1 Pa, <300 ohm output impedance, 125 dB max SPL, 84 dBA S/N, 10 dBA self-noise, 200 x 46 mm dimensions and 710 g weight per microphone.