Become a Site Supporter and Never see Ads again!

Author Topic: JB3 external power  (Read 63789 times)

0 Members and 1 Guest are viewing this topic.

Offline Swampy

  • Trade Count: (0)
  • Needs to get out more...
  • *****
  • Posts: 12018
  • Gender: Male
  • You Worthless Swampy Fool
    • Wanna trade???
Re:JB3 external power
« Reply #165 on: April 11, 2004, 08:59:54 AM »
STILL FUCKING GOING!!! 48 HOURS OF RECORDING AND STILL GOING!!!!!!!!!!!
Normal: ADK A-51TLs > Silverpath BumbleBee XLRs > Edirol UA-5 (Oade Warm mod) > iRiver H120


blah blah blah

Offline F.O.Bean

  • Team Schoeps Tapir that
  • Trade Count: (126)
  • Needs to get out more...
  • *****
  • Posts: 40677
  • Gender: Male
  • Taperus Maximus
    • MediaFire Recordings
Re:JB3 external power
« Reply #166 on: April 11, 2004, 09:11:32 AM »
man, that is crazy!!!

i may just get a 4.2 amp batt, and save a lil weight then!!!
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 ->
SanDisk 128gb Extreme Pro & 64gb Ultra Plus SDXC-I

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 Swampy

  • Trade Count: (0)
  • Needs to get out more...
  • *****
  • Posts: 12018
  • Gender: Male
  • You Worthless Swampy Fool
    • Wanna trade???
Re:JB3 external power
« Reply #167 on: April 11, 2004, 09:16:06 AM »
Ya, at this point, the only reason for a 7.5 is if you wanna record a whole festie and dont mind the weight! I cant beileve that its still going!
Normal: ADK A-51TLs > Silverpath BumbleBee XLRs > Edirol UA-5 (Oade Warm mod) > iRiver H120


blah blah blah

Offline F.O.Bean

  • Team Schoeps Tapir that
  • Trade Count: (126)
  • Needs to get out more...
  • *****
  • Posts: 40677
  • Gender: Male
  • Taperus Maximus
    • MediaFire Recordings
Re:JB3 external power
« Reply #168 on: April 11, 2004, 09:19:29 AM »
Ya, at this point, the only reason for a 7.5 is if you wanna record a whole festie and dont mind the weight! I cant beileve that its still going!

i will still prolly get a 7.2 tho, cause im sure a lil bit more juice is being sucked w/ higher levels, since its consuming more bits or something maybe, but you could def get a whole 20 Gb w/ one batt safely, basically 2 jb3's full, w/ this thing, i may just get a 40GB model ;)
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 ->
SanDisk 128gb Extreme Pro & 64gb Ultra Plus SDXC-I

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 Swampy

  • Trade Count: (0)
  • Needs to get out more...
  • *****
  • Posts: 12018
  • Gender: Male
  • You Worthless Swampy Fool
    • Wanna trade???
Re:JB3 external power
« Reply #169 on: April 11, 2004, 09:24:41 AM »
i may just get a 40GB model ;)

I kind of want to get another before I go down to Bonnaroo...
Normal: ADK A-51TLs > Silverpath BumbleBee XLRs > Edirol UA-5 (Oade Warm mod) > iRiver H120


blah blah blah

Offline F.O.Bean

  • Team Schoeps Tapir that
  • Trade Count: (126)
  • Needs to get out more...
  • *****
  • Posts: 40677
  • Gender: Male
  • Taperus Maximus
    • MediaFire Recordings
Re:JB3 external power
« Reply #170 on: April 11, 2004, 09:29:14 AM »
nice, but thats alot of music bro, ALOT!!!

good luck tho, and hvae phun down there, it gets H-O-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 ->
SanDisk 128gb Extreme Pro & 64gb Ultra Plus SDXC-I

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 Swampy

  • Trade Count: (0)
  • Needs to get out more...
  • *****
  • Posts: 12018
  • Gender: Male
  • You Worthless Swampy Fool
    • Wanna trade???
Re:JB3 external power
« Reply #171 on: April 11, 2004, 01:51:51 PM »
okay, so this sucker finally ran out... It got about 50 hours on a 7.5ah batt. So if my calculations are correct:

Battery mAh (7.5) times current draw (x) times .80 = run time (50)

So that would make x=8.3... So the JB3 current draw is 8.3 according to my calculations. Does this sound right? I hope I did it right!


EDIT, see Brian's post below
« Last Edit: April 11, 2004, 04:39:29 PM by Alex "swampy" Herd »
Normal: ADK A-51TLs > Silverpath BumbleBee XLRs > Edirol UA-5 (Oade Warm mod) > iRiver H120


blah blah blah

Offline Brian Skalinder

  • Complaint Dept.
  • Trade Count: (28)
  • Needs to get out more...
  • *****
  • Posts: 18868
  • Gender: Male
Re:JB3 external power
« Reply #172 on: April 11, 2004, 04:23:50 PM »
okay, so this sucker finally ran out... It got about 50 hours on a 7.5ah batt. So if my calculations are correct:

Battery mAh (7.5) times current draw (x) times .80 = run time (50)

So that would make x=8.3... So the JB3 current draw is 8.3 according to my calculations. Does this sound right? I hope I did it right!

Not quite.  Your initial equation is wrong: should divide battery mAH by current draw, not multiply.  And 7.5 is the batt capacity in AH, not mAH - should be 7500 mAH:

( battery capacity / current draw ) * .80 = estimated run-time
( 7500 mAH / X ) * .80 = 50 hrs
( 7500 mAH ) * .80 = 50 hrs * X
( 7500 mAH * .80 ) / 50 hrs = X
X = 120 mA current draw

Even taking out the .80 fudge factor since the low current draw improves efficiency we're still only talking 150 mA draw.  Seems awfully low.  Hmmmmm...what's going on here...can the NJB3 really draw so little current while recording?!?

Alex, did you run a digital signal into the NJB3 this whole time?

Also looks like you got pretty darn close to the theoretical max record space, ~30 hrs - any artifacts in the recordings?
Milab VM-44 Links > Fostex FR-2LE or
Naiant IPA (tinybox format) >
Roland R-05

Offline Swampy

  • Trade Count: (0)
  • Needs to get out more...
  • *****
  • Posts: 12018
  • Gender: Male
  • You Worthless Swampy Fool
    • Wanna trade???
Re:JB3 external power
« Reply #173 on: April 11, 2004, 04:40:27 PM »
okay, so this sucker finally ran out... It got about 50 hours on a 7.5ah batt. So if my calculations are correct:

Battery mAh (7.5) times current draw (x) times .80 = run time (50)

So that would make x=8.3... So the JB3 current draw is 8.3 according to my calculations. Does this sound right? I hope I did it right!

Not quite.  Your initial equation is wrong: should divide battery mAH by current draw, not multiply.  And 7.5 is the batt capacity in AH, not mAH - should be 7500 mAH:

( battery capacity / current draw ) * .80 = estimated run-time
( 7500 mAH / X ) * .80 = 50 hrs
( 7500 mAH ) * .80 = 50 hrs * X
( 7500 mAH * .80 ) / 50 hrs = X
X = 120 mA current draw

Even taking out the .80 fudge factor since the low current draw improves efficiency we're still only talking 150 mA draw.  Seems awfully low.  Hmmmmm...what's going on here...can the NJB3 really draw so little current while recording?!?

Alex, did you run a digital signal into the NJB3 this whole time?

Also looks like you got pretty darn close to the theoretical max record space, ~30 hrs - any artifacts in the recordings?

Thanks man! I gave it a analog signal, maybe I should try it with a digital signal... It seemed like it ran forever....
Normal: ADK A-51TLs > Silverpath BumbleBee XLRs > Edirol UA-5 (Oade Warm mod) > iRiver H120


blah blah blah

Offline Brian Skalinder

  • Complaint Dept.
  • Trade Count: (28)
  • Needs to get out more...
  • *****
  • Posts: 18868
  • Gender: Male
Re:JB3 external power
« Reply #174 on: April 11, 2004, 04:48:41 PM »
Hmmmmmm...if anything, I would expect running analog-in would use even more juice.  Very interesting, thanks for running the test, Alex!
Milab VM-44 Links > Fostex FR-2LE or
Naiant IPA (tinybox format) >
Roland R-05

Offline Swampy

  • Trade Count: (0)
  • Needs to get out more...
  • *****
  • Posts: 12018
  • Gender: Male
  • You Worthless Swampy Fool
    • Wanna trade???
Re:JB3 external power
« Reply #175 on: April 11, 2004, 04:51:23 PM »
As soon as the batt gets charged up, Ill run a digi signal in... Should I run my pre  > HOsa >  jb3? Or can I just run the hosa into it?
Normal: ADK A-51TLs > Silverpath BumbleBee XLRs > Edirol UA-5 (Oade Warm mod) > iRiver H120


blah blah blah

Offline dklein

  • Trade Count: (0)
  • Taperssection All-Star
  • ****
  • Posts: 1184
  • Gender: Male
Re:JB3 external power
« Reply #176 on: April 11, 2004, 10:25:04 PM »
I'll betcha you were recording in the default mp3 format.   I was following this post and wondering what was going on...no heat from the regulator, crazy battery life - your JB3 wasn't sucking like it should.

Try again recording in wave format - the drive spins waaaay more!  

I don't think it will go more than 3 hours on it's own.  You'll have to be there to press the forward button and start a new 3 hour track.  If you have a 7.5Ah battery you'll probably go 12 hours.

Be sure to turn the IR off - mine has popped back on occasionally (maybe if I pull the battery for a reset?)
KM 184 > V2 > R4
older recording gear: UA-5  / emagic A62 / laptop / JB3 / CSB / AD20 / Sharp MT-90 / Sony MDS-JE510
Playback: Pioneer DV-578 > Lucid DA 9624 >many funny little british boxes > Linn Isobarik PMS

Offline Swampy

  • Trade Count: (0)
  • Needs to get out more...
  • *****
  • Posts: 12018
  • Gender: Male
  • You Worthless Swampy Fool
    • Wanna trade???
Re:JB3 external power
« Reply #177 on: April 11, 2004, 10:35:15 PM »
I was recoding in wave, Im not that careless! Why do you need to push FF if its recording in continuous mode? IR was off.
Normal: ADK A-51TLs > Silverpath BumbleBee XLRs > Edirol UA-5 (Oade Warm mod) > iRiver H120


blah blah blah

Offline F.O.Bean

  • Team Schoeps Tapir that
  • Trade Count: (126)
  • Needs to get out more...
  • *****
  • Posts: 40677
  • Gender: Male
  • Taperus Maximus
    • MediaFire Recordings
Re:JB3 external power
« Reply #178 on: April 12, 2004, 07:36:01 AM »
you dont alex, i dont think he knew you were running "continuous"

no need to push FF in that mode, cause a new one is automatically!!!

when i get my 12v setup going, i will run a signal from mics>v3 the whole time, to see whats really going on;-)

nice alex, thats alot of hrs

if it can go 27 hrs safely, i'll be happy, since i know i can get that out of the hosa batt, the 3 bp-50's will go 9 hrs a piece from the v3, and now the jb3 can go that long too???? too fuggin cool!!!

also, it cant hold much more data than around 30 hrs anyway
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 ->
SanDisk 128gb Extreme Pro & 64gb Ultra Plus SDXC-I

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 Brian Skalinder

  • Complaint Dept.
  • Trade Count: (28)
  • Needs to get out more...
  • *****
  • Posts: 18868
  • Gender: Male
Re:JB3 external power
« Reply #179 on: April 12, 2004, 07:51:35 AM »
Hmmmm...curious, now.  I have an old 12v lying around somewhere, may have to give this one a go, too.  Nice work, Alex!
Milab VM-44 Links > Fostex FR-2LE or
Naiant IPA (tinybox format) >
Roland R-05

 

RSS | Mobile
Page created in 0.071 seconds with 56 queries.
© 2002-2020 Taperssection.com
Powered by SMF