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Everything posted by haifai

  1. So here we go... DC solution for my small audio bag, powering SD 744T and Audio Development AD071. Sony NP F and RRC 2054 compared: Charger: Battery cable, you got 2x DC (red and black wires) and 3 wires for the smart data (you dont need to use them if you dont want to add a control display). I ordered two as they are cheap for experimentation. For one of the battery cables i made a little "breakbox", one black and one red wire connected direct to hirose 4pin, one black and red wire connected to a variable DC/DC voltage regulator - the one i used is a lot oversized, i took what i had laying round here (this one was 5€ new), a simple step down converter for a few bucks should be good enough. The regulated output can be switched off to keep it out off the circuit when not in use. the cables for the smart bus data are not used, i gonna replace the DC/DC converter with something smaller later and put a connector with the 3 smart bus wires at the case, maybe one day i feel like adding a control display to the set... with the second battery cable i gonna make a more simple solution, at my first test i remarked that i really dont need a step down conversion... when i tried to use my ad071 mixer last time with a fully charged NP 1 battery it refused to work, it was O.K. only with a not fully charged NP1... Strangely enough with the fully charged RRC Battery the mixer is working without problems, so i gonna put a simple 7pin neutrik xlr connector direct at the second cable and make a simple snake (split cable from a neutrik 7pin to 2x Hirose 4pin male for DC and 1 Hirose 4pin female for the smbus data if one day i feel like connecting a control display. At least one image of my old "breakfast lunchbox solution" to give "eye cancer" to the electronic engeneers in this forum ;-) That has worked the last year for powering just my AD071 mixer flawlessly... Its working up to 5h (depending the mics attatched, 2 channels phantom power activated). I am not an electronic engeneer, so my soldering skills are limited... Shurely there are professional guys that are able to do better but i am happy with my homebrew solution... regards karsten
  2. thats a lot cheaper than the 150€ rrc display... for the moment i am happy with the displayed voltage at my 744t, but when i do some soldering next time this little funny box is worth trying...
  3. its looking "smart"... where did you get it and for how much?
  4. i opened a new topic at the DIY forum with photos...
  5. Hello everybody, i am looking for a smart solution to power my small audiobag with a 744t and a audio development AD071 premixer. i prefer to keep it light as i do a lot of documentaries and have to be mobil... The oportunities i am thinking of right now is either to use a Sony NP F970 with a step up converter to have 12v for recorder and mixer or to do a DIY (... I am not afraid of soldering ;-) ) powering solution based at rrc smbus batteries: http://www.rrc-ps.com/en/products/battery-packs/standard-smart-battery-packs/rrc2040/features.html or http://www.rrc-ps.com/en/products/battery-packs/standard-smart-battery-packs/rrc2054/features.html (that one is used by sonosax for the new r4 recorder) is there someone how has experience with both power systems (esmart vs sony np-f970)? pros and cons, runtime, weight... Thanx, Karsten
  6. hi, i had to look for a powering solution for my bag. at the end i decided to go with a smart batterie. i bought one from rrc batteries http://www.rrc-ps.com/en/products/battery-packs/standard-smart-battery-packs.html they got battery packs with different voltages, for your purpose RRC2057 / 7.5V / 6.40Ah / 48.0Wh or RRC2040 / 11.25V / 2.95Ah / 33.2Wh/ RRC2040-2 / 11.25V / 6.40Ah / 72.0Wh could fit. http://www.texim-europe.com/products/rrc Prices here in europe at texim are from 50€ to 90€, so the price for a small one is like a NP-F970 from a good brand. in the states you should find even more smart battery choices from other brands. You need a charger (ca 100€) and a cable (15€), some connectors and a voltage regulator/step down converter. did you ask marantz for the voltage specs for external powering when not using their psu? at the marantz site i could find no specs for external powering. if i find the time tommorow i gonna post some pics of my DIY solution karsten
  7. So thanx for all replies... I finished with a smart batterie system in DIY style... RRC 2054 Batterie 15V/48Wh 66€ (this one is used by sonosax in their new recorder) RRC Charger 104€ RRC Batterie breakout cable 14€ all bought at texim europe, really fast delivery i ordered 2 cables, at one i made a small connection box, one output regulated and one 15v direct out with hirose 4pin connectors the other one i made ending with a neutrik 7 pin connector, so it can ve adapted for different purposes. later i want to ad a display unit for the batterie data, for the moment i am happy with the displayed voltage at my 744t. i gonna put it all at the DIY forum when time is allowing me to take some pictures for those people that like to do some soldering... regards, karsten
  8. Here you go: folgende URSA-Produkte sind am Lager. Die Waist Straps sind voerst nur als Big Pouch am Lager. Artikelliste Art.Nr. Typ VK 1 USC Ursa Soft Circles (Pack of 18) MIXED COL 13,00 UCSBe Ursa Chest Strap BEIGE 29,00 UASBl Ursa Ankle Strap BLACK 34,00 UASBe Ursa Ankle Strap BEIGE 34,00 UWSMBPBl Ursa Waist Strap Medium / BP BLACK 35,00 UWSSBPBl Ursa Waist Strap Small / BP BLACK 35,00 UWSMBPBe Ursa Waist Strap Medium / BP BEIGE 35,00 UWSSBPBe Ursa Waist Strap Small / BP BEIGE 35,00 UTSBe Ursa Thigh Strap BEIGE 35,00 Mit freundlichen Grüßen, Dana Kurenz KORTWICH Film-Ton-Technik
  9. They have the Straps in Stock, just asked them yesterday and they sended me a pricelist...
  10. Kortwich Berlin is Dealer for Ursa Straps...
  11. I often worked in situations like that last year, entering in doc scenes unscripted with up to 10 people, no radios... we worked with two booms, thats it. Just take care to optimize the room (noise, light/shadow...) and try to make a plan with the camera department, To have good mics at the cameras is not a bad idea (short shotgun like neumann kmr 81) iI prefer booming with an mid/side stereo boom, so people speaking from the sides are not totaly lost, either with neumann rsm 191 or a combination of gefell m310/neumann km a 120. Dont be afraid, if you follow the conversation/the flow and look what the camera guys are doing there should be no problem.
  12. you should try to do one by your own for testing before spending the money at a shop like kortwich. in a multicable configuration your usb and audio normally gonna share the same ground/shield so chances are big that you get some leakage from the digital usb signal in your audio chain, so the cables would have to be individually shielded. for my DIY projects i normally use sommer cable, there is a big choice: http://shop.sommercable.com/en/Cables/ if you don´t want to do it DIY i much prefer the OPS Shop https://www.ops-shop.de/ the stuff he does is realy good (the low profil connectors are better shielded then the ones from kortwich), the guy is making custom cables too...
  13. hm, two np f970 its not an option for me, the ad071 mixer is not running with more then 15v... maybe best solution will be a rrc2040 -12volt should be good for 744t and ad071, seems reasonable priced and should be fun to build a powering system with the smbus reader...
  14. Hi, i would choose from sound prefererences... My impressions where: Sennheiser 8050, 8060 and MKH 416 tend to sound sharp and compressed on some voices, Neumann KM 150 a little bit thin, lower output I prefer Gefell M 310 for indoor use... Also think about that with digital mics it can be a problem to use them in a ms configuration with an analog fig. 8... Had a schoeps digital cmit for a shooting and it was not possible to use it with a neumann kma 120, digital noise was bleeding at the 5pin cable as both mics share the same ground