This leaves as potential culprits :
- real sound signal but you would hear it (unless it is near range sub-bass or highs but it does not look like it and I understand you made different tests so this is probably not the cause)
- interference with an other electronic device (if you tried in different locations this could probably be ruled out)
- glitches in the FP24 (I'd check power first : power in and phantom)
- glitches in the recorder (I'd check 1 and 2 XLR in)
To try and isolate the cause :
- redo the test with the same equipment in a totally different place with no live cell phones anywhere near and power from internal batteries only (testing for environment problems)
- same test with the external power supply if you used one.
- a test line level in the recorder's XLR from another device than the FP24 (if this works, the culprit is very probably the FP24)
- maybe a test with mics connected directly to the recorder (just to be sure the mics and mic cables are working properly)
- a test with line level signal into the FP24 (if this is OK it leaves the possibility of phantom power plus mic preamps on the FP24)
- a test with a dynamic mic if you have one (if this works, the problem is probably due to phantom power on the FP24)
It might help to gently move the XLR in or out connectors on the FP24 during part of the tests to check for bad contacts.
This leaves as potential culprits :
- real sound signal but you would hear it - NOPE
- interference with an other electronic device (if you tried in different locations this could probably be ruled out) -
Doubt It Because I Have Never Had An Issue With This Before - glitches in the FP24 (I'd check power first : power in and phantom) -
Doubt It - Never Had An Issue - glitches in the recorder (I'd check 1 and 2 XLR in) -
I Will Check ThisTo try and isolate the cause :
- redo the test with the same equipment in a totally different place with no live cell phones anywhere near and power from internal batteries only (testing for environment problems) -
No One Was By Me And My Cell was off, so unlikely - same test with the external power supply if you used one. -
I Will Try This however I did have a fresh fully charged set of envelops in the fp24 - a test line level in the recorder's XLR from another device than the FP24 (if this works, the culprit is very probably the FP24) -
I Will try this - maybe a test with mics connected directly to the recorder (just to be sure the mics and mic cables are working properly) -
No Problem Here - a test with line level signal into the FP24 (if this is OK it leaves the possibility of phantom power plus mic preamps on the FP24)
I will try this - a test with a dynamic mic if you have one (if this works, the problem is probably due to phantom power on the FP24)
I will try this if I can find my micIt might help to gently move the XLR in or out connectors on the FP24 during part of the tests to check for bad contacts. -
No Problem HereThanks for your input and suggestions. I have never ever had a problem with fp24 in the last several years so I am inclined to think it is not a problem with the pre or the power source since everything works properly and the tape out of the fp24 to a second deck worked perfectly. It was only the XLR line outs that presented a problem into the DR70D. That is why I thought I may need attenuators possibly. I will try to get some more tests done but I may just have to run everything again at the LoS show next week and just triple check all my settings on the DR70D. I dunno. I tend to believe it may have been operator error somehow