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Post subject: Help Please with Fender Passport 250 and 500 pro
Posted: Tue Mar 06, 2012 8:05 pm
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Hi All,

We're a book store company and currently we have a Fender Passport 250 which we use for book launch events etc. We're planning on getting another unit so we can schedule simultaneous events. We're looking at purchasing a Fender Passport 500 Pro.

Before we buy it though, my boss is wondering if in case we have one big event, can we plug or join both units together with the Fender 500 serving as the main input (mics etc) source, so in effect we'll have four speakers? Does anyone know how to do it please?

Going further, is it also possible to have 10 mics (4 mics from the Passport 250 and 6 mics from the Passport 500) operating simultaneously and broadcasting to the 4 speakers?

Thank you and appreciate your help in advance!


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Post subject: Re: Help Please with Fender Passport 250 and 500 pro
Posted: Wed Mar 07, 2012 6:32 am
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Aspiring Musician
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Joined: Wed Feb 16, 2011 7:24 am
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You can daisy chain the two amps. You'll either need a cable that has 1/8" stereo (TRS) at one end and two RCA plugs at the other (this is commonly available at Crutchfield, Radio Shack or other consumer electronics stores), or you need 1/8" stereo at one end and 1/4" stereo at the other.

The Passport 500 has a 1/8" stereo out port, and the Passport P250 (or the PD250) has two stereo input channels that can take either the two RCA plugs or the one 1/4" stereo plug. I use a similar kind of link between a Passport 500 and a Passport 300, though the 300 has 1/8" stereo input rather than the kind of port that the 250 uses.

And no, you can't plug in ten microphones and have the sound come out of all four speakers. If you are patching from the 500 to the 250, then anything plugged into the 250 directly will only come out of the two speakers connected to the 250. If you try to be creative and patch the 250 back into the 500 while the 500 is patched into the 250, you'll create a feedback loop and make a horrible, regrettable noise. This is a bad idea.

If you need more than six microphones plugged in at once, get an external mixer for the 7th and more microphones and take the line-level output from the mixer and plug that into one of the 500's two stereo channels using two 1/4" instrument cables. If you can afford more than six microphones, you can afford an external mixer.

Don't get a "powered mixer" with a built in amp for driving speakers. Just get a mixer that takes mic level inputs, mixes them and brings them up to line level output. If they only have XLR out instead of 1/4" mono out, you can get an adapter at most music stores that carry PA equipment.


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Post subject: Re: Help Please with Fender Passport 250 and 500 pro
Posted: Wed Mar 07, 2012 7:22 pm
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Hi ContraCaller,

Wow! Thank you very much for this very detailed explanation.This would really help in persuading my boss. And thanks for letting me know of the consequences of the feedback loop. Appreciate your help!


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