[Swlfest] Re: Urgent request -- audio support for Fest

[David Goren <dbgoren@xxxxxxxxx>]

Steve:

Thanks for writing out the specs. Even though I'm an production person, 
sometimes I need things spelled out. Last year we had a Mackie 1202 
mixer, but as I recall we ran it through your mixer. Ultimately I want 
to plug in a couple of mics, and play back a computer, cd player, 
cassette recorder, and use a DAT to record the whole shebang.

Where exactly will you be in the morning tomorrow, in case I decide to 
take you up on the mixer offer?

David


On Mar 9, 2005, at 5:09 PM, Steve Coletti wrote:

> Last year I brought my 1960's vintage Shure M-68 Mike Mixer.  I will be
> there on Saturday to say hello, but plan to leave before the banquet.  
> To
> make things easier if anyone wants to meet me in the city tomorrow 
> morning I
> will be glad to loan it to you guys.  I'll take it back on Satuday 
> night
> before I leave.  Call me at 212-995-2637 or 917-647-8035 ASAP so we can
> figure on a place to meet.
>
> Baring that, here are the tech specs for connecting everything.  
> Anyone who
> has worked with Pro or Semi-Pro audio will know what to do, and 
> probably
> doesn't need this note.  I'll list the requirements in reverse since 
> the
> connection to the P.A. system is the most critical.
>
> The P.A. system only takes a low impedence, 3-wire balanced line via an
> XLR-3 connector at standard dynamic microphone levels (-128dbm/150 ohm
> reference, but that is the max sensitivity standard).  The system 
> doesn't
> provide phantom power for condenser mikes.  You will need to have a
> conneting cable with a MALE XLR-3 connector on the mike end.
>
> Unless your last mixer or interfaceing piece of audio equipment in your
> chain of mixers has a mike level out, you cannot connect the other 
> mixers to
> the mike jack.  Even if it has a mike level, it may be unbalanced and
> require a matching transformer, like a Rat Shack 274-017 which has a
> Standard phone plug in and an XLR male out.
>
> Most of your Stereo DJ mixers have only unbalanced RCA jacks at 0db/1v 
> rms @
> 10k, way too loud, and that gets worse when you "Y" connect the 
> channels for
> mono.  Please don't think of lowering the ouput level of your mixer, 
> you
> will pick up power supply hum and any minor static abberations will 
> cause
> major surges into the P.A. system, plus no one will be able to make a
> recording off your mixer, the volume will be too low.  The best thing 
> to do
> is go to
> Radio Shack, get some parts and build a pad around the transformer 
> above.
>
> Before they rebuilt the P.A. about 10 years ago we were able to connect
> unbalanced audio equipment at the amps, but no provision was made 
> during the
> upgrade.
>
> Your mixer in will also require a low impedence input XLR-3 mike jack 
> in
> order to use the hotel mike.  If your mixer has a phone plug input, 
> get a
> Radio Scab 274-016 transformer to plug it in.
>
> So does someon want to drop by and get the M68 and some spare cables 
> and "Y"
> connectors?
>
> -Steve
>
>
> -----Original Message-----
> From: swlfest-bounces@xxxxxxxxxxxxxxxx
> [mailto:swlfest-bounces@xxxxxxxxxxxxxxxx]On Behalf Of Richard Cuff
> Sent: Tuesday, March 08, 2005 3:51 PM
> To: Discussion list for the Winter SWL Fest
> Cc: Ralph Brandi
> Subject: [Swlfest] Urgent request -- audio support for Fest
> Importance: High
>
>
> Gang:
>
> Can anyone lend a hand with audio mixing capability that would feed a
> mic-level input in the hotel's PA system?
>
> As you may know there are no input jacks built into the audio mixing 
> panel
> at the hotel.  Last year Steve Colletti (I think) brought a mixing 
> board
> that had mic-level output which we then patched into the microphone 
> jacks in
> the wall.
>
> Steve isn't joining us this year...does anyone else have similar 
> equipment
> they can bring along?
>
> This would be particularly needed for the "Listening Lounge" segment.
>
> Thanks
>
> Richard Cuff
>
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