Just got a gxl2400, hooked it up with phantom power but no signal... just like if the mic was burned out... what could be the problem

From the Micropower PS400 product description it states:

"routes the microphone signal to a mixer or a microphone preamplifier."

• these is just a phantom power supply.


One reason your former setup is OK , is that

tascam m-50 is a mixer preamplifier.

• phantom power supply is just a part of the mic preamp of the mixer

to power up your mxl 990 condenser mic


• What you may need is something like these:

X2u XLR to USB Signal Adapter

No.

There is really no way for a condenser mic to damage the board UNLESS you break the ground and get a static discharge into the input. That can happen with any microphone and has NOTHING to do with the phantom being on or off. As phantom power goes on and off slight bias at the input preamps can make amps non-linear causing the raspy sound you heard. The Phantom LED means NOTHING as it shows the state of the phantom switch by connecting a 12 volt source through a resistor to the LED... It shows NOTHING regarding the state of the 48 volt supply. Each input circuit has two 6.8Kohm resistors to the swinger of the phantom switch 2nd pole that either grounds those or connects them to a filtered 48 volt source. As long as you don't have a static buildup there is NO need to turn phantom power on or off while connecting a condenser microphone. At each input when using the XLR jacks are two per side 470pf capacitors for RF bypass. For the XLR's there is a 10Kohm between the signal lines and two series 10mfd/50 volt caps in series of each input to block the DC, when using phantom power, from reaching the preamp stage. These caps have to charge and discharge when changing the state of phantom power so you should AVOID having the main amps being driven while changing the state of any phantom power. Always have the fader(s) down and any monitors down to avoid a thump and also the non-linear raspy transition as the input caps charge/discharge. So fix the microphone... don't know what type you have, but DO check the cable (first) as ALL three conductors MUST be good for a condenser mic to work on phantom power. A ground leakage or noisy connection will cause your symptoms. Use a SHORT known good cable right at the board to test the mic. The 48 volts is applied through the two 6.8K resistors between both the signal lines to the shield of your XLR cable. The microphone picks off the 48 volts with a similar circuit.
Now let's cover a very important thing regarding system safety: ALL, and I do mean ALL interconnected equipment MUST be powered from the same source. Professionals run a power cord back to their mixer right alongside the snake. This is to avoid ground bounce damage due to bad building grounds or ground faults.

Without knowing your setup or the mic model, my guess is that you need to run a phantom power supply to the mic to get it to function. This is done either by using an outboard analog mixing console or mic preamp with a phantom power switch, or using an inline phantom power supply. The microphone plugs into the mixer or mic pre with the phantom turned on, and then into your DAW system.
The phantom power works with condensor microphones like the one you have. It sends a 48v signal to the microphone element, which in turn energizes the element and makes it function. Dynamic mics, like a Shure SM 58 for example, do not need the phantom power and will even ignore it if run on a phantom powered channel. condensor mics however must have it to function, otherwise there will not be any sound. Hope this helps. Good Luck.

Hi,
for purposes of recording quality, I would recomend getting and external sound card. M-audio make a good range. You would need to have a +48v phantom power supply for this unit to work. The sound card you buy should have this. A Pc or laptop won't

Sorry, but the DI-100 can OPERATE on phantom power, not supply it. If you have a mixer that has phantom power then you have no need for the DI box. DI boxes are to convert unbalanced signals to balanced to send via XLR or TRS cables.

If you don't have a mixer that has built in Phantom power or a source of Phantom power, then you need a mic preamp that can supply the phantom power.

Here is an example device, but DO shop[ around as you should find some even less expensive. Make sure they have phantom power.

http://www.amazon.com/M-Audio-Audio-Budget-Microphone-Preamp/dp/B000CZ0RZG

You'll need a phantom power source, like an interface or mixer. Otherwise, the mic is likely in need of repair.

your CAD mic is a condensor mic and needs phantom power. If you don't have that it won't work. If you need phantom power you can get it from a small mixer. We here at proline carry some small multi channel mixers that have phantom power in them. call 215-736-8055

You need a 48volt phantom power supply and 2 balanced XLR microphone cables.

Does your microphone have it's own built in phantom power? If it's just a regular mic, you should be able to connect into any MIC inputs on your Amplifier. Otherwise, you'll have to utilize a mic/line mixer to provide the phantom power your mic needs. Then you would connect your mixer to the amplifier.

Which SHS Audio amp do you have? The ones that I am familiar with do not have any MIC inputs.

- OPTiC
Master Tech
DJ PRO AUDIO
Pro Audio Equipment : Pro Audio Repairs