|
|||||||||
|
Thread Tools | Search this Thread |
July 29th, 2005, 07:55 PM | #1 |
Major Player
Join Date: Jun 2003
Location: Crested Butte, CO
Posts: 576
|
Phantom II and AT4073a
I have an AT4073a feeding into an Artcessories Phantom II battery powered phantom power supply, feeding out through misc. adapter down to mini-jack for input into the camera. There's no signal or sound. Any thoughts? Could all the adapters (XLR male out, adapted to 1/4" male mono, adapted to mini-stereo) be crossed dropping the signal? (There's a new 9V installed).
thanks for any ideas, Scott |
July 29th, 2005, 09:27 PM | #2 | |
Fred Retread
Join Date: Jul 2004
Location: Hartford, CT
Posts: 1,227
|
Quote:
If you've got the situation I'm talking about, then when you plug into the camcorder, one of its stereo channel inputs becomes grounded and the other receives a signal. Some devices will give you the one channel, while some won't function at all with one channel grounded. Sounds like you have the latter. For instant gratification you could take a trip to Radio Shack and make sure you get a mono to stereo adapter, but this would be the better way to go for a reliable connection: http://www.bhphotovideo.com/bnh/cont...ughType=search But that will still give an unbalanced run (like you have now), okay for shorter cable runs only. If you are ever going to have an XLR cable run much in excess of 15 feet or so, this would be the best solution: http://www.bhphotovideo.com/bnh/cont...ughType=search
__________________
"Nothing in the world can take the place of persistence..." - Calvin Coolidge "My brain is wired to want to know how other things are wired." - Me |
|
July 30th, 2005, 09:10 AM | #3 |
Inner Circle
Join Date: Nov 2004
Location: Baltimore, MD USA
Posts: 2,337
|
Unless there's a problem with the mic cable being bad, it's probably the cable between the Phantom supply and the camera. If you're feeding a mono (mic) signal into a mini stereo input, you need a cable with an XLR female on one end and a male 1/8" TRS on the other. That TRS has to be wired with pin 2 of the XLR to BOTH tip and ring on the 1/8" TRS.
It's a special cable. A regular cable will put the positive peaks on one track and the negative peaks on the other. You might actually hear audio in the camera headphones, but it's totally unusable. Be aware that some camera audio IN jacks provide a small voltage sort of like Phantom Power, but NOT. With the Phantom Box in between the mic and camera, you may be OK. Some mics don't want to see that voltage and sound like crap if they are exposed to it. There are a few cables on the market that have small blocking capacitors inside the XLR connector to stop that voltage from interferring with the mic. Regards, Ty Ford |
| ||||||
|
Thread Tools | Search this Thread |
|