SENNHEISER EVOLUTION
WIRELESS D1
Wireless D1 , a range of digital wireless microphone systems that lets bands go wireless the easy way . With systems for vocals or for instruments , a band ’ s life is made simpler : transmitters and receivers automatically pair and select suitable transmission frequencies , while multiple D1 systems can automatically coordinate themselves . ew D1 operates in the 2.4 GHz range , which is license-free worldwide . “ D1 instantly readies you for making music – and takes the complexity out of wireless ,” summarizes Martin Fischer , product manager at Sennheiser .
EASE OF USE IS KEY
Bands can now just forget about frequency setting , matching transmitters and receivers , and getting the gain right – evolution wireless D1 offers true ease of use by doing all these time-consuming and sometimes errorprone chores for them . “ Basically , all that is needed is to switch the system on ”, said Martin Fischer . “ The rest will happen automatically . In no time at all , you ’ re all set to start jamming – with all the levels right , and a stable wireless link .”
LICENSE-FREE 2.4 GHZ TRANSMISSION WITH INTELLIGENT CHANNEL MANAGEMENT
D1 operates in the 2,400 to 2,483.5 MHz range , which is license-free worldwide so there is no need to register the system or pay for the use of bandwidth . Region-specific particularities are catered for in the respective country variants . To allow co-existence with Wi-Fi , Bluetooth and other 2.4 GHz systems , the D1 receiver continually scans the RF environment , and will inaudibly and seamlessly hop to another frequency if it detects any interference . “ ew D1 continually checks the entire 2.4 GHz band in your surroundings to guarantee you optimum performance ,” added Fischer . Two channels are always available : besides the actual audio transmission channel , the system runs a redundant back-up channel , thus providing frequency and time diversity . Transmission reliability is further increased by fast-switching antenna diversity . Summing up , Fischer said , “ ew D1 uses triple diversity to protect the wireless link between radio microphone and receiver .”
QUALITY AUDIO
evolution wireless D1 employs the industry-leading aptX Live ® codec that ensures excellent audio quality and wide dynamics for vocals , speech and instruments over the entire audio frequency range . Overall latency is a low 3.9 milliseconds , which is ideal if wireless monitors are to be used . To ensure optimum levels , ew D1 automatically sets the correct microphone sensitivity .
Via the ew D1 menu control , bands have a range of audio effects at their disposal . These include a 7-band graphic equalizer , low-cut filter , automatic gain control and deesser . The D1 vocal systems come with dynamic evolution microphone heads but can naturally also be combined with the condenser capsules from the acclaimed series , which are available as accessories .
CHANNEL COORDINATION AND ADAPTIVE TRANSMISSION POWER
ew D1 systems coordinate themselves fully automatically . For multiple systems , receivers will synchronize themselves to accommodate up to 15 channels in an ideal RF environment .
Where local frequency regulations allow , for example in the USA and Canada , Sennheiser has fitted its evolution wireless D1 systems with adaptive transmission power , with up to 100 milliwatts of power ensuring an extrareliable link and extended range . For this , the receiver continuously informs the transmitter about how much RF output power is actually needed for a stable signal . The transmitter adapts accordingly and transmits at the requested power . “ This feature not only increases the range if , for example , the singer moves further away from the receiver but it also saves battery power in those instances where the transmitter is very close to the receiver ,” said Martin Fischer .
POWERING AND CONTROL OPTIONS
D1 transmitters can be powered by either standard batteries or rechargeable “ accupacks ” that are available as accessories . These rechargeable lithium-ion packs recharge via USB or a docking charger and offer the additional advantage that the remaining battery life is indicated on the transmitter and receiver . Where required , the ew D1 system can be controlled by Apple ® or Android ® devices using a dedicated app .
The Score Magazine
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