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Author Topic: n00b questions about SP mics and phantom power  (Read 1807 times)

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Offline kuba

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n00b questions about SP mics and phantom power
« on: January 28, 2005, 06:10:44 AM »
Ok, I read through all the threads dealing with begginers rigs. Still, I'm not sure whether I understand correctly.

I plan to purchase a JB3, which seems to be a good solution. Later on, when I get some money  ::) I'll buy the rest. What I'm gonna do is stealthing at very small venues, both acoustic and loud rock, both indoor and outdoor.

My question is what exactly I need.

I think these are the possibilities, right?

mic > mic-in JB3 .. poor results

mic > batt box > line-in JB3 .. this is better

mic > ? > phantom power box (e.g. DEN PS-2) > ? > line-in JB3 .. best (provided I don't want to use external A/D)

a) From what I read here, there's some issues with phantom power connectors so I'll have to use some transformer, adaptor or something. XLR, mini, jack... I didn't understood at all and I'd appreciate step by step scheme for wiring phantom power (for example DEN PS-2).

b) Last but not least, how about the mics compatibility with phantom/batt box?? Are there some mics compatible with both (9V/48V)? Let's stick with the SP-ATs to keep things simple.

Edit: SP mics can be used with plug-in power or 9V batt box OR you can have them moded for use with phantom power (they will be no longer usable with plug-in or batt box)... Am I right?

c) What's the difference between DEN-PS2 and SAM-S-2 phantom power supplies?? (size?)

Thanks a lot for your thoughts/explanations.
« Last Edit: January 28, 2005, 09:38:01 AM by kuba »
AT831 > bb > iRiver H120

Offline kuba

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Re: n00b questions about SP mics and phantom power
« Reply #1 on: January 28, 2005, 01:05:31 PM »
Sorry for polluting the forum, I should have searched better.

( mikes > jb3 ) and ( mikes > batt box > jb3 ) are clear.

so ...are these wiring correct? Or do I need to add something else?

AT831 > bb > iRiver H120

Offline m.mouse

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Re: n00b questions about SP mics and phantom power
« Reply #2 on: January 28, 2005, 03:32:42 PM »
Sorry for polluting the forum, I should have searched better.

( mikes > jb3 ) and ( mikes > batt box > jb3 ) are clear.

so ...are these wiring correct? Or do I need to add something else?

Hi there.

Split the picture in two. In a top one and a bottom one.

The top one is just like the AT mic + SP batt box solution and will work.
(Except you have drawn two mono connectors instead of a single 1/8" mini).     

The lower one needs power for the adaptors. Say a Denecke PS-2.  Add this.
But even then your levels will still be disappointingly low. So add transformers.
There is a thread on transformers for the same application going on right now.

The "last" alternative is to connect in an AD.20 (pre and ADC) and go optical to the jb3.

- mike
« Last Edit: January 28, 2005, 03:41:58 PM by m.mouse »
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Offline kuba

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Re: n00b questions about SP mics and phantom power
« Reply #3 on: January 28, 2005, 04:04:26 PM »
That's exactly what I wanted to hear, thanks.

Here we go:


AD-20 is way too expensive for me.
« Last Edit: January 28, 2005, 04:20:52 PM by kuba »
AT831 > bb > iRiver H120

Offline thierryhenry

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Re: n00b questions about SP mics and phantom power
« Reply #4 on: January 29, 2005, 01:21:11 AM »
There you go, Good Luck.
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Offline AT853rxwh

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Re: n00b questions about SP mics and phantom power
« Reply #5 on: January 29, 2005, 09:15:46 AM »
If you went with the AD20 you would need the PS2 also btw...

The denecke will give you signal but won't power your mics.
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Offline kuba

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Re: n00b questions about SP mics and phantom power
« Reply #6 on: January 29, 2005, 11:52:48 AM »
If you went with the AD20 you would need the PS2 also btw...

The denecke will give you signal but won't power your mics.

Yep, I understand. AD20 is only analog to digital converter.

I learned quite a lot during wading through the forum reading posts. I was just kind of confused by the adaptors / transformers thing.
AT831 > bb > iRiver H120

Offline hhf32

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Re: n00b questions about SP mics and phantom power
« Reply #7 on: January 29, 2005, 04:28:33 PM »
That's exactly what I wanted to hear, thanks.

Here we go:


AD-20 is way too expensive for me.

Just so you know, if you go with the Hosa Mit-176 transformers you will also need an adapter to go dual 1/4 mono to 1/8 stereo. I did this with adapters from radio shack. If I remember correctly it was two 1/4 to rca plugs into an dual rca to 1/8 stereo adapter. There might be a direct dual 1/4 to 1/8 mini out, try the web.
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Offline kuba

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Re: n00b questions about SP mics and phantom power
« Reply #8 on: January 29, 2005, 06:40:01 PM »
Just so you know, if you go with the Hosa Mit-176 transformers you will also need an adapter to go dual 1/4 mono to 1/8 stereo. I did this with adapters from radio shack. If I remember correctly it was two 1/4 to rca plugs into an dual rca to 1/8 stereo adapter. There might be a direct dual 1/4 to 1/8 mini out, try the web.

Connectors aren't a problem. I can DIY any 1/4 to 1/8 or vice versa or whatever adapters  ;D
AT831 > bb > iRiver H120

 

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