PUBLIC ADDRESS AMPLIFIER
4
PCT-610/620
Additional Descriptions
Additional Descriptions
- MP3 (MPEG AUDIO LAYER-3)
MP3 is one of music file formats that can contain music with stereo sound quality as good as audio CD, which is a
type of MPEG as audio, video compression standards. Compression rate is 1MB by 1 minute and thus about
3~5MB are sufficient if recording songs of 3~ 5 min or so. Different from audio CD, a music file made of MP3 can
contain over 130 songs for popular songs or folk songs and playing time is also about 10 hours. MP3 removes
high frequency which a human can not discernable, so it has advantage to compress it to 1/12 or so while
maintaining sound quality equivalent to CD. The data capacity of a music CD is about 50MB, if it is compressed to
MP3, then it's capacity becomes about 4~5MB.
- WMA (WINDOWS MEDIA AUDIO)
WMA is a multimedia compression method developed by Microsoft Corporation and is the technology to compress
only music from 'Window Media Technologies'. It provides same sound quality as the format of MP3 of 128Kbps
with WMA of 64Kbps.
In other words, it has the half file size compared with MP3 and provides same sound quality as MP3.
Operation
Operation
1. Make sure that speakers and input/output cables are properly connected before you plugged in the power.
2. Set all volumes to the minimum position before you turn the power on.
3. Be sure the AC power is correct voltage before you plug into the power cord.
4. When the power button is pressed, the VFD displays and the unit is working.
5. Adjust the each channel volume and the master volume.
6. Adjust the mic channel EQ.
7. Please refer to the CD / FM operation method or Set Up mode section for details.
