I would highly recomend not going into a mike input of an amp with out an input attenuator, microphones typicaly put out a -60 db signal and page ports put out 0 db or greater so you end up with a terrably destorted audio as well as possably picking up all sorts of electrical noise.
An attenuator I have used sucessfully is made from three resistors, one 220-270 ohms acrost the mike input then a 2.2k ohms from each mike terminal ( pins 2 and 3 on an XLR jack) to the page port. On Tue, 2 Jul 2002 22:26:16 EDT [EMAIL PROTECTED] writes: > you may have a ground loop. try putting either .01 mfd capacitors in > series > with the output and input, or a 600-600 ohm matching transformer for > > isolation. Depending on how the circuit board is laid out inside > the TA624, > you may be picking up hum from a power supply, or transformer. Be > sure to > use good shielded wire, West Penn 292, or equivalent, or good rca > type phono > coax cable. Be sure your impedence between the TA624 and the input > of the > paging amp is the same, or the input on the amp is Hi Z 10K-50K. If > you are > going into a mic input, which is typically 150 ohms, you are loading > down the > TA624, and that can generate noise and hum. Always go from a lower > impedence > to a higher one, never the reverse. > > So endeth the lesson. > > Steve L. Martin > <A HREF="http://www.geocities.com/surfsidesound/";>Surf Side Sound, > Inc.</A> > > > multipart/alternative > text/plain (text body -- kept) > text/html > _________________________________________________________________ > KX-T Mailing list --- http://kxthelp.com/ > Subscription changes: http://kxthelp.com/mailman/listinfo/kxt > Chris Snyder Advantage Telcom Cosby, Tn. Sevier County's oldest interconnect. ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
