The AMS4 is a versatile audio monitoring system. This one RU high unit can be used to monitor analog audio, AES digital audio and SDI embedded audio. The SDI demuxer may be added as an option. </p><p>The AMS4 features an 8 x 1 input switcher (four analog sources, four AES sources) with auto recognition of 75 or 110 Ohm AES signals. A direct balanced stereo analog audio output of the switcher is available on the rear panel. A ten segment LED stereo VU meter and phase indicator is included on the front panel. The AMS4 offers full range acoustic monitoring and may be muted via external control. Two front panel push button switches, MODE and SOURCE, and a dot matrix LED readout allows the user to select the source to be monitored. The MODE switch steps through analog, AES digital and SDI modes while the SOURCE switch selects the input from that group. Use A1 through A4 for analog, D1 through D4 for AES and SD1 through SD8 for embedded signals. On power down, the last selection is stored in memory. </p><p>If a signal is lost or corrupted in the AES digital and SDI modes, the display will alternate between the source selection and the letters NL, signifying no lock. In the SDI mode, a flashing number in the source ID code signifies that embedded audio is not present. The AMS4 will automatically detect whether the AES/EBU digital signal is balanced (110 Ohms) or unbalanced (75 Ohms). In the event that both a balanced and unbalanced signal is connected simultaneously to the same AES input, random selection between the two sources will occur. </p><p>A convenient front panel mounted TRS headset jack is also provided. The speaker feeds are normalled through this jack to automatically mute the speakers when a headset is plugged in. Connections to the AMS4 are made on convenient pluggable screw terminals for the balanced analog and digital AES inputs and outputs. The unbalanced digital audio inputs and SDI inputs are made on 75 Ohm BNC connectors. </p><p>The EXT MUTE IN requires a closure to ground to mute the monitor. Once muted, the display window of the AMS4 will alternate between the selected source ID and the word MUTE. The open collector output EXT MUTE TALLY pin will be activated. Connections to the external mute control and tally are available on a pluggable screw terminal, located on the rear panel.</p>
The TLM 103* is the ideal large diaphragm microphone for all professional and semi-professional applications requiring the utmost in sound quality on a limited budget.</p><p>By utilizing the tried and true transformerless circuit found in numerous Neumann microphones, the TLM 103 features yet unattained low self-noise and the highest sound pressure level transmission. The capsule, derived from that used in the U 87, has a cardioid pattern, is acoustically well-balanced and provides extraordinary attenuation of signals from the rear. </p><p>The TLM 103 is available in satin nickel and matte black. Delivery includes an SG 1 metal swivel mount and a wooden jeweler's box. </p><p><strong>Applications</strong><br />Due to the universal cardioid pattern, straightforward handling, extremely low self-noise level, and finally, the price, the TLM 103 is predestined for all demanding applications from home recording to professional broadcasting and commercial recording studios. </p><p><strong>Polar pattern</strong><br />The TLM 103 is equipped with a large diaphragm capsule with cardioid pattern. By focusing on this pattern - used in most recording situations - the attenuation of unwanted rear sound has been optimized. Off-axis sounds are rendered naturally while isolation is increased. This also leads to a high feedback suppression when the microphone is used in live situations or where loudspeaker playback is a factor. </p><p><strong>Acoustic features</strong><br />The TLM 103 is addressed from the front, marked with the red Neumann logo on the microphone body. The K 103 large diaphragm capsule is based on the K 87, well known from the U 67 / U 87 microphones.The capsule has a flat frequency response up to about 5 kHz, and above that, a wide flat 4 dB presence boost. </p><p>The large wire mesh headgrille protects the capsule from plosive sounds and effectively prevents pop noises. These characteristics are achieved without resorting to corrective resonance effects.</p><p>Therefore, the microphone maintains an excellent impulse response and reproduces the finest details of music and speech without coloration.</p><p><strong>Electrical features</strong><br />With just 7 dB-A / 17.5 dB CCIR the self-noise level of the TLM 103 is so reduced that even the smallest signals are reproduced basically noise-free. As it is capable of handling sound pressure levels up to 138 dB without distortion, the TLM 103 provides a dynamic range of 131 dB (A-weighted).</p><p>The letters TLM stand for "transformerless microphone". With TLM technology the usual output transformer is replaced by an electronic circuit. As with traditional transformers, it ensures good common mode rejection, and prevents RF interference that may influence the balanced audio signal. </p><p><strong>Operational safety</strong><br />The entire internal construction is elastically mounted to attenuate any structure borne noise that could interfere with the TLM 103's operation. Furthermore the capsule is set on an elastic mount. The frequency range reaches below 20 Hz and thus even very low bass signals are reproduced without coloration.</p><p>Due to this low frequency extension, the TLM 103 is more sensitive to structure borne interference and wind noise. For such cases, the elastic suspension EA 1 and the windscreen WS 87 are available as accessories. For close vocal use, the PS 15 or PS 20 a pop screens are recommended. </p><p>*The design of the microphone is a registered design of the Georg Neumann GmbH in certain countries.</p>