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Post subject: Fender Passport Venue Audio Recording Issues
Posted: Tue Jan 23, 2018 9:40 pm
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Hobbyist
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Joined: Tue Jan 23, 2018 9:29 pm
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Just a Quickie. I've recently purchased a Venue, and after adding a cajon with a sm57 inside, all the recordings made on the venue sound as though they have phasing issues with each drumbeat. I don't hear the phasing issue coming out of the speakers, but it is seriously pronounced in the recordings coming from the USB device. is it my harddrive or some other issue i haven't yet begun to consider?


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Post subject: Re: Fender Passport Venue Audio Recording Issues
Posted: Mon Feb 05, 2018 8:20 am
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Aspiring Musician
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Joined: Wed Feb 16, 2011 7:24 am
Posts: 434
If you could be more specific about the quality of the sound problem, it would be helpful. My wild guess is that it's a digital volume summation issue. The recording ignores your Master Volume setting. If you have lots of channels cranked to high volume each, and are bringing the Master Volume down, it's possible for the recording to clip while the live sound doesn't reflect that. Digital clipping has a distinctive sound that could be interpreted as a phasing issue. Percussion is loud and brief. The VU meter might not respond fast enough to let you know you are clipping.
I'd try backing off the volume on the cajon, then backing off the volume of other channels to blend well, and crank up the Master Volume to compensate to give you the live sound you like. It might fix the recording of the cajon.


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Post subject: Re: Fender Passport Venue Audio Recording Issues
Posted: Fri Feb 09, 2018 8:43 am
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Aspiring Musician
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Joined: Wed Feb 16, 2011 7:24 am
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Just in case you find my previous post as confusing, consider this (and remember that I'm only guessing here):

1. Fender has a long history of using analog components. I'm not sure, but odds are that the entire mixer is analog, meaning that wiggles of the string and wiggles of sound waves hitting the mic sensor-cones become wiggles in voltage levels in wires, which get mixed together, amplified and sent out the speakers without ever becoming numbers that a computer can understand. If it gets loud enough to clip, it sounds like a cheap car AM radio cranked to the max.

Basically, companies that make digital mixers do so in order to have more control over the quality of sound than a Passport has, with lots of parametric or graphic band EQ controls, lots of different reverb, echo, and stereo chorus effects, and other stuff that the Passport doesn't have because, hey, this stuff gets confusing to control, and why pay for it if you aren't using it, right? Keep it simple and keep it affordable.

2. In order to record to an .mp3 file or a .wav file, you have to turn the signal into numbers that a computer can understand. So, while the preamps and mixer and power amplifier on the Passport may be 100% analog, the recorder is 100% digital.

3. The recorder samples the sound without affecting the sound making it to the speaker. It's listening to each track individually, and converting sound into numbers, and then adding those numbers together to come up with the numbers in the .wav file.

4. Since it is sampling each track at the track level, the Master Volume has no affect on the recording.

5. If you are running one track through the Passport, the numbers are small. If you are running six tracks through the Passport, the numbers can be big. If the number gets too big, you have "digital clipping". It doesn't sound like analog clipping. It's like a wireless mic with a dying battery. You have brief bursts of silence right next to brief loud sound. It can be like "clicking" or static. It would be especially sensitive to brief, loud, percussion sounds, since the numbers percussion generates might be the ones that toss the total over its limit.

If you back off the volume level of each of your tracks, you lower the sum of the numbers going to the recorder. It should clip less. If that's not loud enough for the live venue, crank the Master Volume higher, and you don't change the recording at all.

I hope this makes more sense than my first try.


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