為舞台設計的電容咪高峰技術：該系統的咪高峰頭是以皆負盛名的evolution e 865電容頭為基礎的。寬廣的頻率響應和高靈敏度，讓它成為G3 100系列中的精英手持模型。出色的音質和簡便的操作，讓該系統能直接將表演者的情緒和熱情帶向觀眾——不做任何妥協。
For the Sennheiser EW Series equipment there is a proprietary rechargeable battery system that is designed specifically for these products to ensure the best operation time possible when using rechargeable batteries.
The rechargeable battery system consists of the following components:
- BA2015G2 = (rechargeable battery pack)
- L2015 = (charger for two units)
- LA2 = (charging slot-in adapter for a G3 or 2000 series handheld microphone)
- NT1-120 = (power supply for a single L2015 charger)
- NT3-1-US = (power supply for up to three (3) L2015 chargers daisy chained together)
NOTE: The BA2015G2 battery pack can be placed directly into the L2015 charger for charging. When using the BA2015G2 battery pack in a SK or EK device the whole body pack can slot directly into the charger to charge the battery packs allowing charging in the device.
When a handheld microphone is used in conjunction with the LA2 adapter the handheld microphone and LA2 adapter can slot directly into the charger to charge the battery pack without having to remove the battery pack from the handheld microphone.
There are two main settings that will typically affect sound quality:
This is how sensitive the microphone pick up is and this is adjusted on the handheld microphone, bodypack or SKP transmitter itself. Typically for general speaking the sensitivity should be set around -15 to -18 dB. You will need to adjust this depending on the exact application. Closer to 0 dB is more sensitive and further away from 0 dB is less sensitive. If the microphone is too sensitive the input will overload the microphone and the AF level will peak and the audio will be clipped. The sensitivity should be set so the AF PEAK indicator only lights up during the loudest passages.
This is how strong the final signal exits the receiver into the sound board/PA system/recorder etc. The "AF OUT" setting is found only in the receiver's menu settings. Typically this will be set around 0 dB or +6 dB if you connecting to a line level input on the sound board/speakers/etc. If you are trying to connect to a device which expects a mic level input, you will typically need to drop this AF output down to -24 dB or -30 dB.
NOTE: If the AF Output is too high it may overload the input (peak) on connected device and may create undesirable noise (distortion, rumbling, etc).
The Evolution Wireless (EW) products are built according to their frequency range when manufactured. It is not possible to re-tune or switch the frequency without switching out the RF boards which is often more expensive than purchasing new equipment.
It is likely that the noise/static/interference you’re experiencing is being caused by a background RF signal from an external source (ie: broadcast TV or radio stations, other wireless microphones, etc) on the same frequency as your wireless system.
This can be confirmed this by turning off the transmitter and checking the receiver’s display. If there is an RF signal showing on the receiver's display when the transmitter is off that indicates that the receiver is picking up an RF signal from an external source and the receiver is trying to tune this external RF signal which will sound like a broad white noise.
One of the most important steps for proper setup is turning on the receiver first and checking what it sees in the absence of your microphone signal. If the receiver sees an RF signal being generated by an outside source (ie: noise) then you need to retune the system. Depending on which system is being used the exact steps on how to change frequencies will vary. NOTE: When using multiple wireless systems the frequencies need to be co-ordinated together to ensure that they do not interfere with each other.
Once a new frequency is selected get back to the receiver's main display. If there is no RF registering then this new frequency is a "clean" frequency on which to operate.
Keep in mind the RF environment changes from location to location so it is important to always check the receiver for RF levels before turning on the transmitter. It is best practice to always do a frequency scan when using equipment in a new location.
The RF environment is often constantly changing so a frequency scan is really only completely accurate for the exact time that the frequency scan is done (ie: a frequency scan done on Wednesday night could yield different results to a frequency scan done on Sunday morning). Ultimately to ensure a frequency scan is still valid you want to turn on the receivers and leave the microphones off. In this state the receivers should be showing no RF signal to indicate that they are on a clean usable frequency. If you turn on the receivers (with the microphones off) and you are seeing a lot of RF activity that indicates that something in the RF environment has changed and now the frequency which was previously "clean" (and hence usable) is now "dirty" (ie there is an external RF signal on it) and you will need to set the receiver to use a different frequency.
There are no universal rules which govern the use of wireless microphone equipment globally. The rules and regulations regarding which frequencies are allowed for wireless microphones vary widely by country. All Sennheiser products that are sold in the US are congruent to the US rules and regulations as mandated by the FCC.
We can provide information regarding rules and regulations for the US, however because rules and regulations vary from country to country, we cannot advise which frequencies to use outside of the US. Unfortunately there is no universal database that contains all this information.
For information about the rules and regulations for a specific country it is recommended that you directly contact the embassy of the country in question to find out the rules and regulations or contact the Sennheiser subsidiary or partner company in the country in question. You can find contact details for these subsidiaries and partner companies here: (http://en-us.sennheiser.com/service-support-contact-service-partner-worldwide).
In June 2010 the FCC instituted regulations that made it illegal to operate wireless microphones within the 700 MHz frequency range in the United States.
With the transition to digital television TV broadcasters vacated a large section of the UHF spectrum (from 698 to 806 MHz) so the FCC auctioned the 700 MHz band to the highest bidders (including AT&T and Qualcomm) to facilitate the development of wireless broadband Internet service throughout the United States. In addition, the FCC has reserved select frequencies in the 700 MHz band for emergency and national security purposes.
NOTE: The FCC is the Government agency tasked to regulate interstate communications by radio, television, wire, satellite, and cable in all 50 states, the District of Columbia and U.S. territories. The FCC sets the guidelines and regulations for all broadcast equipment (including wireless microphones).