Become a Site Supporter and Never see Ads again!

Author Topic: TASCAM DR-680 portable 8-track #4  (Read 100913 times)

0 Members and 1 Guest are viewing this topic.

kirk97132

  • Guest
  • Trade Count: (0)
TASCAM DR-680 portable 8-track #4
« on: August 06, 2011, 01:14:40 PM »
Previous thread part 3: http://taperssection.com/index.php?topic=141730.0
part 2: http://taperssection.com/index.php?topic=137231.360
part 1: http://taperssection.com/index.php?topic=131128.0


Picking up where we left off............
Extrnal battery solutions for the 680.  Here's a question, has anyone evered check the phantom voltage using a 9 volt dvd battery? 
« Last Edit: August 06, 2011, 01:17:38 PM by kirkd »

Offline Chuck

  • Trade Count: (42)
  • Needs to get out more...
  • *****
  • Posts: 10810
  • Gender: Male
  • time between the notes...
    • My recordings on the LMA
Re: TASCAM DR-680 portable 8-track #4
« Reply #1 on: August 06, 2011, 03:27:43 PM »
I just had to send my second DR-680 back to Tascam/TEAC, because I was getting that cyclical volume going up and down that some users have reported with this recorder.

If anyone has more information about that problem, I'd like to hear about it. About 47 minutes into running with a pair of C-481's and a pair of CAD GXL1200's the GXL1200's levels started to go up and down in a cyclical way. I had those mics on tracks 1 & 2.  Looking at the WAV forms in CuBase, I can see that the levels on the C-481's went down about 3dB when the CAD mics started going into the cyclical volume thing too. The SBD feed I had on tracks 5 & 6 was unaffected.

I'm thinking it's a phantom power supply problem...


Reality is merely an illusion, albeit a very persistent one.

Microphones: AKG C 480 B comb-ULS/ CK 61/ CK 63, Sennheiser MKE 2 elements,  Audix M1290-o, Micro capsule active cables w/ Naiant PFA's, Naiant MSH-1O, Naiant AKG Active cables, Church CA-11 (cardioid), (1) Nady SCM-1000 (mod)
Pre-amps: Naiant littlebox, Naiant littlekit v2.0, BM2p+ Edirol UA-5, Church STC-9000
Recorders: Sound Devices MixPre-6, iRiver iHP-120 (Rockboxed & RTC mod)

Recordings on the LMA: http://www.archive.org/bookmarks/ChuckM
Recording website & blog: http://www.timebetweenthenotes.com

kirk97132

  • Guest
  • Trade Count: (0)
Re: TASCAM DR-680 portable 8-track #4
« Reply #2 on: August 06, 2011, 04:10:04 PM »
How were you powering it?  This is kinda why I was asking about the DVD battery supplying an actual 48 volts phantom.   

Offline Chuck

  • Trade Count: (42)
  • Needs to get out more...
  • *****
  • Posts: 10810
  • Gender: Male
  • time between the notes...
    • My recordings on the LMA
Re: TASCAM DR-680 portable 8-track #4
« Reply #3 on: August 06, 2011, 06:27:14 PM »
9v "DVD" battery. But, it also had 8 fully charged NiMH AA's internally.
Reality is merely an illusion, albeit a very persistent one.

Microphones: AKG C 480 B comb-ULS/ CK 61/ CK 63, Sennheiser MKE 2 elements,  Audix M1290-o, Micro capsule active cables w/ Naiant PFA's, Naiant MSH-1O, Naiant AKG Active cables, Church CA-11 (cardioid), (1) Nady SCM-1000 (mod)
Pre-amps: Naiant littlebox, Naiant littlekit v2.0, BM2p+ Edirol UA-5, Church STC-9000
Recorders: Sound Devices MixPre-6, iRiver iHP-120 (Rockboxed & RTC mod)

Recordings on the LMA: http://www.archive.org/bookmarks/ChuckM
Recording website & blog: http://www.timebetweenthenotes.com

Offline jbell

  • TDS
  • Trade Count: (149)
  • Needs to get out more...
  • *****
  • Posts: 4567
  • Gender: Male
  • Spreadicated
Re: TASCAM DR-680 portable 8-track #4
« Reply #4 on: August 06, 2011, 08:18:09 PM »
That's a bummer your second one is acting up too!!

I just had to send my second DR-680 back to Tascam/TEAC, because I was getting that cyclical volume going up and down that some users have reported with this recorder.

If anyone has more information about that problem, I'd like to hear about it. About 47 minutes into running with a pair of C-481's and a pair of CAD GXL1200's the GXL1200's levels started to go up and down in a cyclical way. I had those mics on tracks 1 & 2.  Looking at the WAV forms in CuBase, I can see that the levels on the C-481's went down about 3dB when the CAD mics started going into the cyclical volume thing too. The SBD feed I had on tracks 5 & 6 was unaffected.

I'm thinking it's a phantom power supply problem...
Mics: DPA ST4011ER & 4018ER
Preamps: DPA MMA 6000 | Audioroot Femto
Recorders: Sound Devices Mixpre-10 II | Sony PCM A10

-20        -12         -6        TDS   (32/48)     
]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]][}   
]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]][} 
__________________________
|Record|  Runtime: 4:19.99  {|||] 75%

Offline phil_er_up

  • Trade Count: (9)
  • Taperssection All-Star
  • ****
  • Posts: 1256
Re: TASCAM DR-680 portable 8-track #4
« Reply #5 on: August 07, 2011, 08:17:57 AM »
That's a bummer your second one is acting up too!!

I just had to send my second DR-680 back to Tascam/TEAC, because I was getting that cyclical volume going up and down that some users have reported with this recorder.

If anyone has more information about that problem, I'd like to hear about it. About 47 minutes into running with a pair of C-481's and a pair of CAD GXL1200's the GXL1200's levels started to go up and down in a cyclical way. I had those mics on tracks 1 & 2.  Looking at the WAV forms in CuBase, I can see that the levels on the C-481's went down about 3dB when the CAD mics started going into the cyclical volume thing too. The SBD feed I had on tracks 5 & 6 was unaffected.

I'm thinking it's a phantom power supply problem...
Sorry to hear that chuck!
Everyday is a gift. Enjoy each one!
Forward motion bring positive results.

Offline Fatah Ruark (aka MIKE B)

  • Trade Count: (11)
  • Needs to get out more...
  • *****
  • Posts: 9940
  • Gender: Male
  • I dream in beige.
    • sloppy.art.ink
Re: TASCAM DR-680 portable 8-track #4
« Reply #6 on: August 07, 2011, 09:55:02 AM »
Bummer Chuck.

I'm wondering if people are having issues by only feeding it 9V? Maybe it's enough to make it functional, but if the battery starts to flake out it pushes the DR-680 into lala land. Or maybe it could be mic dependent...ie mics that draw more power might cause trouble, and mics that draw less might be fine with 9V.

Just thinking out loud. I don't really know much about this stuff. Just enough to be dangerous.

Speaking of batteries. Which tip should I use for the Tekkeon MP3450? Cashed in my bucket of change and had enough to splurge for one of those. :) ...maiden voyage of the deck with external battery on Saturday. I'm going to try to run more than 3 channels for the first time. I'm thinking 2x Mics + Mono SBD feed + 3 individual vocal mics out of the board.
||| MICS:  Beyer CK930 | DPA 4022 | DPA 4080 | Nevaton MCE400 | Sennheiser Ambeo Headset |||
||| PREAMPS: DPA d:vice | Naiant Tinybox | Naiant IPA |||
||| DECKS: Sound Devices MixPre6 | iPod Touch 32GB |||
|||Concert History || LMA Recordings || Live YouTube |||

Offline Gutbucket

  • record > listen > revise technique
  • Trade Count: (15)
  • Needs to get out more...
  • *****
  • Posts: 15698
  • Gender: Male
  • "Better to love music than respect it" ~Stravinsky
Re: TASCAM DR-680 portable 8-track #4
« Reply #7 on: August 08, 2011, 09:17:38 AM »
[answers roll call]

I'm using 9V DVD + internals.  No issues so far, probably the biggest phantom draw for me would have been for 6 channels: 2x AKD TL + 4x phantom power adaptors.  I have not checked voltage or current draw.  Sorry to hear about the troubles, Chuck.

Did a cool 5 omni decca-tree surround recording a little over a week back for an outdoor show.  About 40" between mics.  Full siren firetruck passby about 3/4 of the way through is pretty impressive.  Irony of the thing is that I setup the mics in a small tree growing directly in front of the mobile stage, 3rd row a couple seats left of center, so in this case it was indeed real decca TREE.
musical volition > vibrations > voltages > numeric values > voltages > vibrations> virtual teleportation time-machine experience
Better recording made easy - >>Improved PAS table<< | Made excellent- >>click here to download the Oddball Microphone Technique illustrated PDF booklet<< (note: This is a 1st draft, now several years old and in need of revision!  Stay tuned)

Offline Sockan

  • Trade Count: (0)
  • Taperssection Newbie
  • *
  • Posts: 22
  • Gender: Male
Re: TASCAM DR-680 portable 8-track #4
« Reply #8 on: August 08, 2011, 05:46:42 PM »
I might have mentioned this in a previous post a while ago, but since you are talking about external batteries...
I have tried a couple of the "tri.voltage" (5v USB, 9v, 12v) versions of the 6800mAh batteries. In a duration test with 3 mics using phantom power, I tested one of them over night and it where still going after 7.5 h when I disconnected it because i needed it recharged for use after work (they charge really slow). There is one problem with both of mine because they create tones every 4000hz... It's on 4, 8, 12, 16 and 20khz.
I don't even have to have it connected to dr-680. The tones get recorded if it's in the same bag or close to dr-680. I usually go around that by having the recorder on my left hip and the battery on my right hip in a bag in my belt with a cable to dr-680.
I got tired of that so I have ordered 2 (and just got them) 9800mAh versions with only 12v and they don't have those tones. I haven't tested duration and quality yet, but no annoying tones so far...
You can find them here. http://cgi.ebay.com/12V-DC-Rechargeable-Li-ion-Battery-CCTV-Cam-9800mAh-/250671005591?pt=LH_DefaultDomain_0&hash=item3a5d27ff97#ht_3039wt_1114
How long "should" a 9800mAh battery last with 4 channels with phantom power?
Equipment:
Two ears recording to a 16Kb memory between them.

Offline headroom

  • Trade Count: (1)
  • Taperssection Regular
  • **
  • Posts: 204
    • My Work with Photos and for Documentary Cinema ( Soundjob)
Re: TASCAM DR-680 portable 8-track #4
« Reply #9 on: August 10, 2011, 08:07:00 AM »
The TASCAM eats approx 340- 400 mA at 12Volt 9800mA : 400mA =  24 Hrs

Offline Chuck

  • Trade Count: (42)
  • Needs to get out more...
  • *****
  • Posts: 10810
  • Gender: Male
  • time between the notes...
    • My recordings on the LMA
Re: TASCAM DR-680 portable 8-track #4
« Reply #10 on: August 13, 2011, 12:54:05 PM »
For anyone that is interested, here is a link to a recording that exhibits the cyclical volume swings on my DR-680:

CyclicalProblem.zip

http://www.filesavr.com/xzhoOJOW
Reality is merely an illusion, albeit a very persistent one.

Microphones: AKG C 480 B comb-ULS/ CK 61/ CK 63, Sennheiser MKE 2 elements,  Audix M1290-o, Micro capsule active cables w/ Naiant PFA's, Naiant MSH-1O, Naiant AKG Active cables, Church CA-11 (cardioid), (1) Nady SCM-1000 (mod)
Pre-amps: Naiant littlebox, Naiant littlekit v2.0, BM2p+ Edirol UA-5, Church STC-9000
Recorders: Sound Devices MixPre-6, iRiver iHP-120 (Rockboxed & RTC mod)

Recordings on the LMA: http://www.archive.org/bookmarks/ChuckM
Recording website & blog: http://www.timebetweenthenotes.com

Offline Nick's Picks

  • Trade Count: (33)
  • Needs to get out more...
  • *****
  • Posts: 10260
  • Gender: Male
  • I thought I heard.......
Re: TASCAM DR-680 portable 8-track #4
« Reply #11 on: August 13, 2011, 01:05:52 PM »
thats fucked.   I *was* going to buy one of these.

Offline phil_er_up

  • Trade Count: (9)
  • Taperssection All-Star
  • ****
  • Posts: 1256
Re: TASCAM DR-680 portable 8-track #4
« Reply #12 on: August 13, 2011, 03:50:19 PM »
For anyone that is interested, here is a link to a recording that exhibits the cyclical volume swings on my DR-680:

CyclicalProblem.zip

http://www.filesavr.com/xzhoOJOW

Thanks Chuck. I DL'ed and have never seen that behavior on my Dr-680 that I can tell, but that is messed up.
Everyday is a gift. Enjoy each one!
Forward motion bring positive results.

Offline Fatah Ruark (aka MIKE B)

  • Trade Count: (11)
  • Needs to get out more...
  • *****
  • Posts: 9940
  • Gender: Male
  • I dream in beige.
    • sloppy.art.ink
Re: TASCAM DR-680 portable 8-track #4
« Reply #13 on: August 13, 2011, 03:56:10 PM »
For anyone that is interested, here is a link to a recording that exhibits the cyclical volume swings on my DR-680:

CyclicalProblem.zip

http://www.filesavr.com/xzhoOJOW

What sort of file is this? It says it's a zip, but it downloads a jpg file for me (which doesn't open).
||| MICS:  Beyer CK930 | DPA 4022 | DPA 4080 | Nevaton MCE400 | Sennheiser Ambeo Headset |||
||| PREAMPS: DPA d:vice | Naiant Tinybox | Naiant IPA |||
||| DECKS: Sound Devices MixPre6 | iPod Touch 32GB |||
|||Concert History || LMA Recordings || Live YouTube |||

Offline Chuck

  • Trade Count: (42)
  • Needs to get out more...
  • *****
  • Posts: 10810
  • Gender: Male
  • time between the notes...
    • My recordings on the LMA
Re: TASCAM DR-680 portable 8-track #4
« Reply #14 on: August 13, 2011, 04:22:26 PM »
Mike, it's a WAV file that's zipped with WinZip.
I can upload in a different format if you can't open it.
Reality is merely an illusion, albeit a very persistent one.

Microphones: AKG C 480 B comb-ULS/ CK 61/ CK 63, Sennheiser MKE 2 elements,  Audix M1290-o, Micro capsule active cables w/ Naiant PFA's, Naiant MSH-1O, Naiant AKG Active cables, Church CA-11 (cardioid), (1) Nady SCM-1000 (mod)
Pre-amps: Naiant littlebox, Naiant littlekit v2.0, BM2p+ Edirol UA-5, Church STC-9000
Recorders: Sound Devices MixPre-6, iRiver iHP-120 (Rockboxed & RTC mod)

Recordings on the LMA: http://www.archive.org/bookmarks/ChuckM
Recording website & blog: http://www.timebetweenthenotes.com

 

RSS | Mobile
Page created in 0.154 seconds with 43 queries.
© 2002-2024 Taperssection.com
Powered by SMF