Thank you for having the manual I needed for an older model Aiwa stero I had found on Ebay --- I wanted the Aiwa because I had tapes and cd's but I did not have a manual as to how to operate the system... I found what I needed and it has enabled me to set the system up for my enjoyment.
I wished detailed information of the JBL S310 and here I found it! Very happy with the service from this site!
Text excerpt from page 5 (click to view)
USING MORE THAN ONE MICROPHONE It is often desirable for a group to use a separate microphone for each individual performer. In this case, the following points should be remembered: 1. It is best if the microphones are individually controlled for volume through a separate Shure microphone mixer. If this is not possible, it is desirable that each performer use the sarne type and rnodel of microphone so that the group as a whole wjil1 he "halanced." 2. Check the placement of the microphones with relation to loudspeakers (as previously mentioned) so that feedback is minimized. 3. As additional microphones are added the possibility of feedback increases. Turn off, or down, unused microphones to help solve this problem. SHURE FEEDBACK CONTROLLER Lets you "tune" your sound system to the acoustics of the room. The result is more overall sound power without feedback. Eight linear-motion filter controls are infinitely variable from 0 to 12 dB cut. Below 63 Hz and Above 8 kHz roll-off switches attenuate low and high frequencies. Can be installed between mixer or console and amplifier for total system control, or following each microphone as a single-channel preamplifier with feedback control.