HAVE A VEW QUESTIONS ABOUT MY FLEX-6600M, PR40 MIC AND USE OF THE PRESONUS TUBEPRE V2 MIC PREAMP.

Julie KC0TMD

Paul - K6HR

Rick N0VT

David Decoons, wo2x

Another thing, make sure phantom power is disabled on the tube pre. The PR40 is a dynamic mic and the 48 volts can damage the mic.. What input are you using on the Flex? Mic, line, or balanced? Make sure your selection on SmartSDR matches the input you are using. If you are not seeing any audio on the level indicator on the mic pre then that is where you need to start looking. I am not familiar with that equipment so cannot offer any additional advice. Dave wo2x

Bob Needleman

KD0RC

Bob Needleman

Brian Denley KB1VBF

But it’s the right mic for the Flex.  Keep the mic and dump the preamp

Bob Dushkoff

I just got a PR40, have it plugged into the 1/8 Mic jack and have the MIC option selected, as well as the +20db selected, and Bias off. Virtually NO audio. I can hear my voice faintly on another tranceiver, and a HAM who lives 1/4 mile from me heard nothing on transmit. Full 100w setting on Power gave me 11 watts out on sideband, and in FM mode I get the 100w carrier with no audio. So I am having same problem that Julie had, but if this is a dynamic mic, why won't it work? Bob, K3AC, and others, appreciate any feedback. I'd rather NOT get a preamp with or without mixer, if I don't need it. Thanks for any comments! 73 de W8RBD Bob

Mike Steventon

Check your mic cable connections. I have PR 40 and it is absolutely fine with +20dB and set to about 80 gain. No need for external preamp. I use the balanced line 1/4 inch jack as we are told in the manual that it gives the best quality. You have to select Bal, as opposed to Mic. The manual gives clear instructions on the wiring of both types of microphone plug. It really sounds as if there is a faulty connection in the mic lead. Hope that helps!

73 de Mike G4GWH

WX7Y

I have my PR40 Wired for Balanced Audio with the +20 Mic amp turned on level set about 83. 

The PR40 if VERY VERY directional MIC and you need to talk straight into the Mic and not to the side and you need to be within 2 to 3 inches away from the MIC. 

The Audio using the PR40 set up correctly using just the settings in the Flex Radio is OUTSTANDING and far better then the Heil Gold line Mic's or about any other MIC I have tried. 

KD0RC

@Bob Dushkoff , what radio do you have? Are you connecting to a Maestro? The mic jack options are different on different radios. For example, the 6400 does not have the 1/4 inch jack for balanced input, it just has the 1/8 inch jack for pseudo-balanced input. That also means that Bal, is not a choice, just Mic. Let us know so that we can give you better guidance.

Mike Steventon

Attn. WX7Y:

“‘’’”’The Audio using the PR40 set up correctly using just the settings in the Flex Radio is OUTSTANDING and far better then the Heil Gold line Mic's or about any other MIC I have tried. ‘’’”””

I could not agree more!!!!

73 de Mike.

WX7Y

Bob, in the title of the message he says it is a 6600M.

Mike VE3CKO

Of course the PR-40 with the +20db mic preamp enable will do the job and you will get great reports using the internal EQ. The point is she is trying to use a tube preamp and the mellowness it will add to her voice. You can't get that with the suggested W2IHY EQ Plus. Keep trying Julie don't give up. In addition to what Dave said about making sure the phantom power is off on your PreSonus, be sure you DISABLE the 20db mic preamp in the FlexRadio.

I currently have my PR-40 going direct in the balanced input of the 6700 with level at 73. I was using a Behringer tube preamp but it failed and I haven't replaced it yet, not sure I will. Hoping Flex will add some EQ enhancements to SmartSDR like a few parametrics and more bands. The 8-band is surely very useful but having more sweet spots to enhance or reduce would be very welcome.