Posted by clair (126.96.36.199) on July 07, 2002 at 06:38:21:
In Reply to: Re: Tapco Service Manuals And Operator Manuals posted by Bob Gudgel on July 17, 2001 at 17:09:39:
: : I have a Tapco 6201B that I have just taken out of "mothballs" that I need some info on. My manual seems to be missing info from the "ON OFF Switch" to the end. What I have includes info on
: I don't have a manual on this one but I bet Rick Chinn does.
: Rick? The phantom power is the 48Volts (open cicuit) for the
: powering of condensor microphones. This 48Volts is applied to
: pins 2 and 3 of the 3 pin connector and the ground
: is pin 1. Pin 2 is usually HOT with respect to pin
: 3 when balanced mode is used. So, the application of the + 48 Volts
: does not (normally) have any effect on a non-powered microphone
: like the SM-58. Yes, the SM-58 is balanced, but not powered
: so the 48 Volts DC, (if turned on), would appear at
: pins 2 and 3, (the SM-58 balanced lines), but since there is
: no voltage differential from pin 2 to 3, there is no current
: drawn by the microphone and therefore no effect or harm done to
: the sound or microphone. The powered microphones will use this
: 48 Volts, (less when the mic is being powered because of the resistors
: in the preamp of the mixer), from pin 2 and/or pin 3 to ground.
: It's the reference to ground from pin 2 and 3 that makes the phantom
: power work to power the microphone. Otherwise, pin 1 is just a ground
: or shield for external fields.
: : Channel Gain
: : PAN
: : Bass and Treble
: : Effects
: : Monitors
: : MIC/Line switch
: : Some Additional inputs on inputs
: : Input connections
: : Master Gain contols
: : Rumble Filter
: : MIC EQ
: : Effect Returns Funtional description
: : Master Monitor
: : Phantom Power ON/Off switch
: : and the first part of ON/OFF
: : Am I missing anything critical?
: : Also, can anyone tell me if a Shure SM 58 is a "balanced Mic?" Also, I am not sure I understand the purpose of Phantom Power.
: : I appreciate any info I can get.
: : Kit Kellison
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