The first Neumann mic with transformerless technology, featuring 5 directional characteristics, selectable at the mic or remotely, in addition to pre-attenuation and low-cut filter switches. The excellent sound pressure handling capability makes this mic ideal for recording wind instruments, for example.
Five directional characteristics are selectable by means of a rotary switch. In the sixth position, marked "R", the directional patterns can be controlled remotely with the N 248 power supply. There is no special cable necessary for this purpose.
The microphone has at its rear a 10 dB attenuation switch for extremely high sound pressure levels, and a high-pass filter to suppress structure born noise.
Therefore, this microphone is used for many diverse applications in professional recording studios, in broadcasting, film and television, and for semiprofessional productions. The polar patterns can be selected either at the microphone itself, or controlled remotely through the special N 248 power supply.
As a result the TLM 170 R has a very even diffuse-field response for all polar patterns. This is important in a reverberant environment, as more reflections arrive at the microphone from different directions. The acoustic information is not affected in its tonal quality when recorded by the microphone. This characteristic is achieved without resorting to corrective resonance effects.
Therefore, the microphone maintains an excellent impulse response reproducing all transient phenomena of music and speech without any coloration. The capsule is elastically mounted to avoid any structure borne noise that could interfere with its operation.
The rotary switch on the microphone must be in the position R (= remote control). In this switch position the TLM 170 R microphone analyses the absolute value of the phantom power and selects the corresponding polar pattern. A standard 3-pin microphone cable is used, similar to the microphone's conventional operation. Cable lengths may be up to 300 m (1000 feet).
When using the IC 4 cable (for example to suspend the microphone from the ceiling with the MNV 87 auditorium hanger), the bracket and its holder need to be removed. The microphone can then be connected to the swivel mount connector of the cable.
- Local and remote controlled large diaphragm microphone
- Pressure-gradient transducer with double membrane capsule
- Five directional characteristics: omni, wide angle cardioid, cardioid, hypercardioid, figure-8
- Patented circuitry for remote and local switching of directional characteristics
- Switchable low frequency roll-off and 10 dB preattenuation
- Tiltable, elastically suspended bracket mount
|Acoustical operating principle||Pressure gradient transducer|
|Directional pattern||Omnidirectional, wide angle cardioid, cardioid, hypercardioid, figure-8|
|Frequency range||20 Hz ... 20 kHz|
|Sensitivity at 1 kHz into 1 kohm||8 mV/Pa|
|Rated impedance||50 ohms|
|Rated load impedance||1 kohms|
|Equivalent noise level, CCIR1)||26 dB|
|Equivalent noise level, A-weighted1)||14 dB-A|
|Signal-to-noise ratio, CCIR1) (rel. 94 dB SPL)||68 dB|
|Signal-to-noise ratio, A-weighted1)(rel. 94 dB SPL)||80 dB|
|Maximum SPL for THD 0.5%2)||144 dB|
|Maximum SPL for THD 0.5% with preattenuation2)||154 dB|
|Maximum output voltage||10 dBu|
|Supply voltage (P48, IEC 61938)||48 V ± 4 V|
|Current consumption (P48, IEC 61938)||3 mA|