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Author Topic: powering tube mics in the field?  (Read 16729 times)

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Offline Jhurlbs81

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Re: powering tube mics in the field?
« Reply #45 on: May 07, 2010, 01:09:59 PM »
Quote
Be careful with 120 vdc field wiring, it can burn and/or kill.
In fact, high DC voltages are even more dangerous than wall outlets.

So running this setup in the rain last summer was a bad idea?  :-\  ;)

Offline H₂O

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Re: powering tube mics in the field?
« Reply #46 on: July 15, 2010, 05:51:35 PM »
And then their was two...
« Last Edit: July 15, 2010, 08:45:02 PM by H2O »
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Offline OOK

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Re: powering tube mics in the field?
« Reply #47 on: July 16, 2010, 12:32:37 AM »
And then their was two...

What is the run time.......and what type of battery.... is it internal or external.... seriously cool...  I already have way to much gear but this is intriguing........ man the wife would be pissed...

Let me pose the next logical question....is there one in development with switchable pattern control for multi pattern tube mics?

OOK
DPA/HEB 4060's > R09HR
MBHO648/KA100Lk/KA200/KA300/KA500 > SD702

Offline H₂O

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Re: powering tube mics in the field?
« Reply #48 on: July 16, 2010, 08:52:53 AM »
pulls about 400mA or so


runs on external 9-16V DC -> you can use SLA, Tekkeon's, DVD batt's, etc


I should be able to add a pattern control(s).






 
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Offline Jhurlbs81

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Re: powering tube mics in the field?
« Reply #49 on: July 16, 2010, 09:38:03 AM »
mine powers the Telefunken usa tubes for about 4-4.5 hrs off one Tekkeon 3450. 

Offline Walstib62

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Re: powering tube mics in the field?
« Reply #50 on: July 16, 2010, 10:51:20 AM »
My old Atwater-Kent used two batteries, A and B
"A" voltage was for filament and it came from the A-battery; "B" voltage fed the plates and (oddly) came from the B-battery.  (B+)
Sometimes a "C" cell was used to power grids, but usually a rheostat could provide it, tapped off of the B+ line.

Then the power company came along an put up all those dag-burned poles and it all changed.
Lot of good men lost putting up those wires, back in the day, yessiree.
No one even remembers the sacrifices made to bring utilities to these here parts atall.





Be careful with 120 vdc field wiring, it can burn and/or kill.
In fact, high DC voltages are even more dangerous than wall outlets.
Not exactly true. 60Hz ac is the most lethal to the heart tissues because it dirupts the electrical activity of the heart at much lower current levels than DC. DC is more likely to induce the "cannot let go" response because it affects the nervous system and tends to lock up motor activity. Either can cause severe burns at the site of contact.

Offline OOK

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Re: powering tube mics in the field?
« Reply #51 on: July 16, 2010, 11:33:32 AM »
pulls about 400mA or so


runs on external 9-16V DC -> you can use SLA, Tekkeon's, DVD batt's, etc


I should be able to add a pattern control(s).

Wow.........that is seriously cool... T+ final question, how much does one of these magic boxes cost....?
DPA/HEB 4060's > R09HR
MBHO648/KA100Lk/KA200/KA300/KA500 > SD702

Offline Walstib62

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Re: powering tube mics in the field?
« Reply #52 on: July 16, 2010, 12:10:45 PM »
So, you can have a variable intput, but I'm assuming you designed it for a constant DC output specific to the Telefunken mics it was designed to power(?) If you could then tweek the output to supply other mics on a custom basis, you might have something there.
I love the sound of tube mics. The U47 is still the greatest ever, right?
I wonder, though, in a blind test, if one were to run a good LD FET mic thru a tube pre, how much difference in that good 'ol tube sound would there be? 

Offline pyiteac

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Re: powering tube mics in the field?
« Reply #53 on: July 22, 2010, 02:33:48 AM »
H2O

You are such a nerd.  Good work bro.
Mics: Schoeps MK4>KCY (with MK41/MK21/MK8's on call)
Pre:  Schoeps VMS02ib 
Interconnects:  Kimber Kable
Recorder:  Korg Mr-1

Offline H₂O

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Re: powering tube mics in the field?
« Reply #54 on: February 23, 2011, 09:34:42 PM »
Number 3 - For a pair of Gefell M582's





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Offline NOLAfishwater

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Re: powering tube mics in the field?
« Reply #55 on: February 24, 2011, 12:17:13 AM »
 :clapping: :cheers:  great job on figuring this all out.

Offline page

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Re: powering tube mics in the field?
« Reply #56 on: February 24, 2011, 12:51:03 AM »
"This is a common practice we have on the bus; debating facts that we could easily find through printed material. It's like, how far is it today? I think it's four hours, and someone else comes in at 11 hours, and well, then we'll... just... talk about it..." - Jeb Puryear

"Nostalgia ain't what it used to be." - Jim Williams

Offline Teen Wolf Blitzer

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Re: powering tube mics in the field?
« Reply #57 on: February 24, 2011, 10:27:44 AM »
Yer killing me.  I need a power supply for my toobes.   :'(

Offline F.O.Bean

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Re: powering tube mics in the field?
« Reply #58 on: February 24, 2011, 05:55:09 PM »
AWESOME Work guys!
Recording Rigs:
Schoeps MK4's & MK41's ->
Schoeps & NBob 250/05 KCY's ->
Naiant +60v/Low Noise PFA's ->
DarkTrain Right Angle Stubby XLR's ->
Sound Devices MixPre-6 & MixPre-3

Portable Playback Rigs:
Sony NW-A35 Walkman & Shanling M0 ->
Linum G2 SuperBax & Bax & Westone Bluetooth MMCX Cables ->
Campfire Audio Andromeda & Westone UM Pro 30 (G1 & G2) IEM's -> Comply Isolation+ Memory Foam Tips

http://www.archive.org/bookmarks/diskobean | http://www.archive.org/bookmarks/Bean420 | http://bt.etree.org/mytorrents.php

Offline dactylus

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Re: powering tube mics in the field?
« Reply #59 on: March 01, 2011, 05:55:11 PM »
Number 3 - For a pair of Gefell M582's

^
Looks great Richard.  Thank you for enabling me to run the Gefell tubes in the field!

 ;D
hot licks > microphones > recorder



...ball of confusion, that's what the world is today, hey hey...

 

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