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Author Topic: Power Cable for Shure FP-24  (Read 2460 times)

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Offline Cheesecadet

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Power Cable for Shure FP-24
« on: January 18, 2015, 11:05:24 AM »
Hey Cable Makers out there.

Has anyone every made a threaded coaxial cable for connecting external power to the Shure FP-24?

I pulled the specs for its power and it is listed below:


Power:

External: 5 – 14 VDC via threaded coaxial connector* (5.5 mm
outer diameter, 2.1 mm inner diameter); Pin positive, sleeve neg-
ative; Voltages above 14 VDC cause no damage to unit, but will
open an internal poly fuse that will reset when voltage is re-
moved.

*Threaded coaxial connector provided for use with power sup-
plies not equipped. For instructions on how to solder this connec-
tor to a Shure PS20, see Figure 5

I know nothing of electronics, but does this mean that supplying a minimum of 5volts DC would power the unit sufficiently?  If so, I assume some of these USB 5v power bank batteries on the market would work.

Has anyone built a cable that has a threaded coaxial (locking) needed for FP-24 terminated in a USB or MicroUSB on the other end.  Is this even possible?

Please let me know as I am looking into this option if someone is willing to make a cable.

Thanks!
AKG481's > Hi Hos > Naiant MPD-12 > Shure FP24 > Schoeps SCH-501 1/8" > Sony PCM-M10
DPA 4061's | AT853's (SC, C, O) | Tinybox | PIPsqueak | Darktrain/GAK | Audition CS6 | iZotope

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Offline Gene Poole

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Re: Power Cable for Shure FP-24
« Reply #1 on: January 18, 2015, 12:32:28 PM »
I plan on making one for the SD MP-2.  I believe they have the same power jack.  My research shows that it takes a Switchcraft S761KS15 plug and I ordered a few from Mouser:

http://www.mouser.com/ProductDetail/Switchcraft/S761KS15/?qs=%2fha2pyFadujFSk7kr6XZpIBlwWE6Ovmv5foZe2PZTs2XaQpjsWeMbQ%3d%3d

When they get here (tomorrow according to the tracking number) I plan to make one with a USB connector on the other end and see how it does on 5V.  I've got a few rechargeable phone packs I'd like to try out.  I'll keep you informed.

I've been using Lithium AAs and I'm pretty impressed.  The SP-2 will go over 8 hours while providing 48V to my Neuman KM-184s in a test setup (not much SPL on the mics--just background noise in my house).

Offline voltronic

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Re: Power Cable for Shure FP-24
« Reply #2 on: January 18, 2015, 01:04:04 PM »
By all means let one of the excellent cable builders here make you a cable for running external power.  But if you ever need to travel light I get 6+ hours of 48V phantom with my CM3s with the rechargables linked below, and they have a higher current draw than any of your mics:

http://www.amazon.com/Duracell-Charged-Rechargable-Batteries-Digital/dp/B00DSYFDPC

Read the first review there.  His testing indicates these are "debranded" eneloops.  My local grocery store sells them as 4pk with charger for about $13.
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Offline Cheesecadet

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Re: Power Cable for Shure FP-24
« Reply #3 on: January 18, 2015, 02:24:50 PM »
By all means let one of the excellent cable builders here make you a cable for running external power.  But if you ever need to travel light I get 6+ hours of 48V phantom with my CM3s with the rechargables linked below, and they have a higher current draw than any of your mics:

http://www.amazon.com/Duracell-Charged-Rechargable-Batteries-Digital/dp/B00DSYFDPC

Read the first review there.  His testing indicates these are "debranded" eneloops.  My local grocery store sells them as 4pk with charger for about $13.

Do your CM3s have more draw that the Peluso CEMC6 cards being run 48p???

Does SPL of a venue affect run times on battery consumption? Ie if it is louder = more current draw, etc?
AKG481's > Hi Hos > Naiant MPD-12 > Shure FP24 > Schoeps SCH-501 1/8" > Sony PCM-M10
DPA 4061's | AT853's (SC, C, O) | Tinybox | PIPsqueak | Darktrain/GAK | Audition CS6 | iZotope

10/12 PoW, 10/14 DPO, 10/21 Passafire (?), 12/09 Shockra

Offline voltronic

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Re: Power Cable for Shure FP-24
« Reply #4 on: January 18, 2015, 02:33:41 PM »
By all means let one of the excellent cable builders here make you a cable for running external power.  But if you ever need to travel light I get 6+ hours of 48V phantom with my CM3s with the rechargables linked below, and they have a higher current draw than any of your mics:

http://www.amazon.com/Duracell-Charged-Rechargable-Batteries-Digital/dp/B00DSYFDPC

Read the first review there.  His testing indicates these are "debranded" eneloops.  My local grocery store sells them as 4pk with charger for about $13.

Do your CM3s have more draw that the Peluso CEMC6 cards being run 48p???

Does SPL of a venue affect run times on battery consumption? Ie if it is louder = more current draw, etc?

Peluso's website says the CMEC-6 has current consumption of "< 3.0 mA".  Line Audio CM3 is 3.5 mA.
http://www.pelusomicrophonelab.com/microphones/CEMC6.html
http://www.lineaudio.se/CM3.html

As to your second question, I have no idea.  I can't imagine it would make a difference, but maybe someone else here can give a better answer.
DPA 4061 | Line Audio CM3 | Naiant X-Q
Naiant PFAs | Shure FP24
Tascam DR-70D JWMod | Sony PCM-M10

Tascam DR-70D FAQ
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Quote
I am hitting my head against the walls, but the walls are giving way.    ///    If a composer could say what he had to say in words he would not bother trying to say it in music.
- Gustav Mahler

Offline Cheesecadet

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Re: Power Cable for Shure FP-24
« Reply #5 on: January 18, 2015, 02:55:22 PM »
I already have some of those batteries so I will run some tests!

Hopefully someone else can chime in on the SPL question. I am curious if it affects it at all
AKG481's > Hi Hos > Naiant MPD-12 > Shure FP24 > Schoeps SCH-501 1/8" > Sony PCM-M10
DPA 4061's | AT853's (SC, C, O) | Tinybox | PIPsqueak | Darktrain/GAK | Audition CS6 | iZotope

10/12 PoW, 10/14 DPO, 10/21 Passafire (?), 12/09 Shockra

Offline Gene Poole

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Re: Power Cable for Shure FP-24
« Reply #6 on: January 18, 2015, 10:33:45 PM »
By all means let one of the excellent cable builders here make you a cable for running external power.  But if you ever need to travel light I get 6+ hours of 48V phantom with my CM3s with the rechargables linked below, and they have a higher current draw than any of your mics:

http://www.amazon.com/Duracell-Charged-Rechargable-Batteries-Digital/dp/B00DSYFDPC

Read the first review there.  His testing indicates these are "debranded" eneloops.  My local grocery store sells them as 4pk with charger for about $13.

I was at Lowes earlier today and they have what appears to be the Energizer version of these (http://www.energizer.com/batteries/rechargeable-batteries/Pages/power-plus-aa.aspx).  I picked up a 4-pack for $11.37 and the cashier gave me a receipt with a link for a $5.00 rebate from Energizer.  I'll give them a try and report back.

Offline drewloo

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Re: Power Cable for Shure FP-24
« Reply #7 on: January 19, 2015, 06:38:13 AM »
Here is an alternative to the Switchcraft connector if you need a right-angled connector:

http://www.digikey.com/product-search/en?mpart=10-00116&vendor=839



I spliced this w/ a usb cable and it worked fine w/ a usb battery, although the wires in the usb cable are really thin and kind of hard to solder.  I also got an unassembled USB connector from digikey but the soldering tabs in the ones I got were so small I just hacked a usb cable I already had.  After looking around there are usb assemblies that have bigger soldering tabs and might be worth trying.
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Offline Cheesecadet

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Re: Power Cable for Shure FP-24
« Reply #8 on: January 19, 2015, 08:47:53 AM »
By all means let one of the excellent cable builders here make you a cable for running external power.  But if you ever need to travel light I get 6+ hours of 48V phantom with my CM3s with the rechargables linked below, and they have a higher current draw than any of your mics:

http://www.amazon.com/Duracell-Charged-Rechargable-Batteries-Digital/dp/B00DSYFDPC

Read the first review there.  His testing indicates these are "debranded" eneloops.  My local grocery store sells them as 4pk with charger for about $13.

Thanks for the tip on the batteries!  I had some of those lying around already.  I charged them up and put the in the FP24 with my Pelusos out to my M10.  I got 8 hours 24 minutes of good run time before the signal started to deteriorate.  Nice to know I can use those in a pinch!  :clapping:
AKG481's > Hi Hos > Naiant MPD-12 > Shure FP24 > Schoeps SCH-501 1/8" > Sony PCM-M10
DPA 4061's | AT853's (SC, C, O) | Tinybox | PIPsqueak | Darktrain/GAK | Audition CS6 | iZotope

10/12 PoW, 10/14 DPO, 10/21 Passafire (?), 12/09 Shockra

Offline carlbeck

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Re: Power Cable for Shure FP-24
« Reply #9 on: March 05, 2015, 07:49:29 PM »
I get over 6 hours on Eneloops powering 414's with my FP24. I have a battery cable that came with mine for a Tekkon but never used it since I run the rechargeables.
I know you like, tape for people's approval and stuff, and wave your tapes around like they're your dick...  but even you can't actually think section tapes from philips sound good.  



Mics: Telefunken Elam 260, 61, 62, MBHO KA200, KA500 > Niant PFA's, AKG C34L-MS
Preamps: Grace Lunatec V2, Shure FP24
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Offline DSatz

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Re: Power Cable for Shure FP-24
« Reply #10 on: April 29, 2015, 12:39:46 AM »
> Does SPL of a venue affect run times on battery consumption? Ie if it is louder = more current draw, etc?

I can only answer the question for Schoeps microphones, which use class "A" circuitry; the net current draw is always the same, whether the microphones are idling or at maximum SPL.
music > microphones > a recorder of some sort

Offline ~Jon Stoppable

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Re: Power Cable for Shure FP-24
« Reply #11 on: April 29, 2015, 10:24:55 AM »
That's true of most microphones, because the large majority are class A.  But for those that aren't (mine aren't, including PFAs), the difference is minimal--max output is typically around 2VRMS, which into a 1k5 load (very few preamps are lower than that anymore) is only 1.3mA.  And since no audio source is going to have peak energy all the time, you'd never see that level anyway, so the difference between a very loud source and no source will be less than 0.5mA in a class AB mic circuit.

 

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