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Author Topic: JB3 external power  (Read 96187 times)

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Offline aberg

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Re:JB3 external power
« Reply #90 on: March 21, 2004, 12:04:49 AM »
That's not too bad... should be fine with that plus one internal battery then. I'll eventually probably look into using an RC battery to boost the time even more.

Offline teajay

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Re:JB3 external power
« Reply #91 on: March 21, 2004, 12:45:24 AM »
Well I know in my situation an additional 3 hours is plenty, because then i get 2.5 (internal) + 3 (external) = 5.5 hours of runtime for the JB3, which is what I get for runtime on my battery pack for the UA-5... so it all works out nicely...

The battery pack for my UA-5 is the same setup as for the JB3 (AA batteries and holder), except you need 8 batteries (8 * 1.2v = 9.6v, same as RC packs). Which i owe many thanks to terry watts (twatts) for helping me out while making it... :)
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Offline F.O.Bean

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Re:JB3 external power
« Reply #92 on: March 21, 2004, 01:21:55 AM »
for less hassle, why wouldnt you just run 2 internals???

i can get a SURE 6 hrs out of them, and id go 6.5 if i HAD to proll!!
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Offline John R

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Re:JB3 external power
« Reply #93 on: March 21, 2004, 01:46:02 AM »
i sent off for the car adapter kit today.  hope it gets here in time for springfest(probably not, waited too long)
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Offline F.O.Bean

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Re:JB3 external power
« Reply #94 on: March 21, 2004, 01:55:53 AM »
i sent off for the car adapter kit today.  hope it gets here in time for springfest(probably not, waited too long)

nice john, let us know how it goes!!!

i'll be following suite soon!!!prolly at the beginning of the summer!!!

so car kit>solder>4-pin for 12v???

7.2a right???

let me know what batts/charger your getting, i was gonna see if ed at kindkables would make me a 12v 7.2a + charger!!!
Schoeps MK 4V & MK 41V ->
Schoeps 250|0 KCY's (x2) ->
Naiant +60v|Low Noise PFA's (x2) ->
DarkTrain Right Angle Stubby XLR's (x3) ->
Sound Devices MixPre-6 & MixPre-3

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Offline John R

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Re:JB3 external power
« Reply #95 on: March 21, 2004, 02:30:57 AM »
i sent off for the car adapter kit today.  hope it gets here in time for springfest(probably not, waited too long)

nice john, let us know how it goes!!!

i'll be following suite soon!!!prolly at the beginning of the summer!!!

so car kit>solder>4-pin for 12v???

7.2a right???

let me know what batts/charger your getting, i was gonna see if ed at kindkables would make me a 12v 7.2a + charger!!!

eco-charge ec-90 for me.  ed will make anything you ask him to.

jr
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Offline sickrick43

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Re:JB3 external power
« Reply #96 on: March 21, 2004, 02:34:36 AM »
Well I know in my situation an additional 3 hours is plenty, because then i get 2.5 (internal) + 3 (external) = 5.5 hours of runtime for the JB3, which is what I get for runtime on my battery pack for the UA-5... so it all works out nicely...

The battery pack for my UA-5 is the same setup as for the JB3 (AA batteries and holder), except you need 8 batteries (8 * 1.2v = 9.6v, same as RC packs). Which i owe many thanks to terry watts (twatts) for helping me out while making it... :)


Be careful with the discharge curves on the NiMH batteries.  The JB3 seems to work in a very small voltage range.  The NiMH's will run high current for thier cycle, but drop very fast when they reach the end.  Like so fast, that you'll be looking at it one minute, turn away and look back a minute later, and it's DEAD.  ESPECIALLY if you're doing the "run with flashlight till deck works" routine.  If you get a car adapter, and run it off a 12V pack, it will run until the voltage gets down to about 7V.  The endofcycle discharge will still be steep, but you'll have a much wider usable voltage range to work in.  

A "slightly discharged" 7.6 is cutting it a little close in my book.

Rick
<yawn> I've had enough fun today.  off to bed...
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Offline F.O.Bean

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Re:JB3 external power
« Reply #97 on: March 21, 2004, 04:09:42 AM »
john, nice, i have 3 bp-50's , so i am set on the v3 batts, that'll SAFELY get me 27 hrs on the v3!!!

thats cool, you'll be able to power the v3 + the jb3 off the same batt

i think if the 12v 7.2a will get me 10 hrs, i'll buy 2 of those, plus the internals, and TAHTS a lot of music, prolly all the jb3 can hold anyway, but i am obsessive and need/like to have all the batts i can!!!

this is really looking on the up and up, also, on a sidenote, im bringing my odl-276 every show too, because of the influx of jb3's, and most likely, jb3 patchers!!!

wasted and done rambling!!

bean
Schoeps MK 4V & MK 41V ->
Schoeps 250|0 KCY's (x2) ->
Naiant +60v|Low Noise PFA's (x2) ->
DarkTrain Right Angle Stubby XLR's (x3) ->
Sound Devices MixPre-6 & MixPre-3

http://www.archive.org/bookmarks/diskobean
http://www.archive.org/bookmarks/Bean420
http://bt.etree.org/mytorrents.php
http://www.mediafire.com/folder/j9eu80jpuaubz/Recordings

Offline sickrick43

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Re:JB3 external power
« Reply #98 on: March 21, 2004, 08:02:11 AM »

i think if the 12v 7.2a will get me 10 hrs, i'll buy 2 of those, plus the internals, and TAHTS a lot of music, prolly all the jb3 can hold anyway, but i am obsessive and need/like to have all the batts i can!!!

this is really looking on the up and up, also, on a sidenote, im bringing my odl-276 every show too, because of the influx of jb3's, and most likely, jb3 patchers!!!

wasted and done rambling!!

bean

Yer a nut bean-o (like me) and must be a PACK MULE.  Hauling two 12v/7.2's wears me the fuck out.  

Nice of you to bring the 276, remember you gotta worry about POWERING IT too.  I'd think most JB3 patchers are gonna have thier own converters, or worse yet...  Just think about it, a whole new class of ex-MD wooks, wandering the section w/JB3's and no cables, looking for a patch <shudder>.  Hordes of JB3 wooks, spun out and fighting over who's first and who's last in the chain <gag>.

Too early in the morning to even think about it.  I'm going BACK to bed...  (well actually gotta run out to a client and finish the stuff I walked out on yesterday - everything I touched turned to shit - bad day HERE and bad day THERE for me  :o )

Rick
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24 Track Rig: Audix D6/D2/D4/I5/SCX1-C/O->Whilrwind SPC82 ISO Splitters->DigimaxLT's->Alesis HD24 (Lucid GenX192 Master Clock)

Canon 1Ds MarkII - 16-35/2.8L - 24-70/2.8L - 70-200/2.8L IS - 180/f:3.5 Macro - 550EX Flash


"this isnt a dramatic bitchy exit, its just time to go." - Big Ray (queen of the dramatic bitchy exit)

Offline BCostigan

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Re:JB3 external power
« Reply #99 on: March 21, 2004, 10:12:35 AM »
12v sla -> car kit definatly looks like the way to go!  Sooooo glad I got to lose my 6 volt sla from my bag.....6 hours on the 2 internals will be plenty for me 95% of the time!
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Offline teajay

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Re:JB3 external power
« Reply #100 on: March 21, 2004, 12:06:07 PM »
for less hassle, why wouldnt you just run 2 internals???

i can get a SURE 6 hrs out of them, and id go 6.5 if i HAD to proll!!

Every ebay seller with them right now only ships to the US. Online retailers in the states who have them for $33 are all out of stock, only people selling for ~$37 have them. Add $20 shipping to Canada, we're at $57 US. $57 * 1.37 (god damn ridiculous exchange rate someone's going to charge) and we're at $78 CDN. Not to mention I've been getting bills for duties and taxes lately for everything i'm getting from US. so add another $10 to it... That's about $90 for a god damn battery... Or I could order it direct from a Canadian retailer who sells them for $80 + s/h because they probably got them the same way i would have.

This rat shack homebrew pack cost me $23. That's why :D

One of the many disadvatages of living up here, along with scarce shows by good bands.
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Offline aberg

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Re:JB3 external power
« Reply #101 on: March 21, 2004, 01:19:01 PM »
Amen to that, teajay... Canada may be a better place to live when it comes to public education, health care, and general nationwide acceptance, but for music... HELL no.

Offline F.O.Bean

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Re:JB3 external power
« Reply #102 on: March 22, 2004, 04:20:53 AM »
amen is right, WOW, that DOES sound like the easiest way,+T\!!!
Schoeps MK 4V & MK 41V ->
Schoeps 250|0 KCY's (x2) ->
Naiant +60v|Low Noise PFA's (x2) ->
DarkTrain Right Angle Stubby XLR's (x3) ->
Sound Devices MixPre-6 & MixPre-3

http://www.archive.org/bookmarks/diskobean
http://www.archive.org/bookmarks/Bean420
http://bt.etree.org/mytorrents.php
http://www.mediafire.com/folder/j9eu80jpuaubz/Recordings

Offline aberg

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Re:JB3 external power
« Reply #103 on: March 22, 2004, 03:56:29 PM »
pickin up my new JB3 from the local fedex drop-off spot (missed the damn delivery guy) in an hour... SUWEEETT!!!! I'll probably spend the better part of the evening figuring it out and testing my homemade battery pack, etc. Now all I need is those Superlux mics and a phantom power supply with line transformers and I'm good to go.

Offline aberg

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Re:JB3 external power
« Reply #104 on: March 22, 2004, 03:58:07 PM »
Thinkin' about the Art Phantom II and the HOSA mit-176 pigtail (a pair of 'em) + an adapter to bring a 3.5 mm plug into the JB3... yes, I'm avoiding buying an external A/D for now... too pricey... you think this setup will be nice enough for some good tapes?

 

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