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  • Location
    Washington DC
  • About
    sound recordist Rodrigo Salvatierra
  • Interested in Sound for Picture

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  1. hi, Would anyone have experience opening this adapter for re wiring? I've taken the screws out and twisted, but wanted to ask, to avoid breaking it. thanks Rodrigo
  2. Hi. I modified this amp a bit to work for guitar. It only has a 6x5 rectifier , a 6aq5a power and a 12ax7 preamp tube. The 4th tube originally in the circuit was for the tape head, so I extracted it and aimed towards a fender champ. I matched it with an old cabinet that had a Jensen 12" alnico and am happy with how smooth it sounds. I am trying to find out what system this amp was part of. Its very similar to the Moviola amps, but this one had the playback head and tape guide wheels on the amp itself, where the moviola had a separate unit for that. The second photo shows it in original form. Any clue I'd appreciate. Thanks
  3. Glad we reached a consensus. Its does sound nice already when I ran it with a synth, and I still have work to do in the preamp section . Also curious about controlling the capstan motor speed, I believe its DC .
  4. Hi, I have a Teac r1000, which is 4 track 2 channels, and have restored the transport to good working condition. My plan is to use it as a delay, so am searching for full track mono heads for it. If I do find compatible heads, would the circuit in the preamp section of the deck for the three heads most likely need modifications, or could I simply use one of the 2 channels to work with the mono head by making the necessary calibration adjustments? Thanks, Rodrigo
  5. If I recall correctly, on that receiver, line output audio is lower than rx900. -10dbv. I got one converted by Zaxcom many years ago, to raise output level and was then able to feed cameras line level signal without issue, when used as a camera hop. Rodrigo
  6. Yes I have. Along with some of the tips also suggested in this thread, the person helping me wrote: Certain transients can cause the crackling/distortion rather easily depending on the source.
  7. That pad, as I understand it, would prevent distortion in the cmc or the preamp input. it isn't the the cmc or the mic preamp that is distorting. This seems to work well for many in a studio setting, but too bulky for a bag after converting to ta3, and they are calibrated to +18dbu, which would not allow me to adjust gain within the 633. http://www.prismsound.com/music_recording/products_subs/overkiller.php no issues on inputs 1-3
  8. What Ive tried now: Schoeps->preamp->Inputs4-6 of 633 =Digital distorted pops What I want to try: Schoeps ->preamp->diode limiter->inputs4-6 of 633
  9. No. I have had similar issues using other preamps, including a mixpre-d, and MP1, both with very effective limiters, which did help but occasionally I would still get distorted pops. I haven't had issues with radio mics, which makes me wonder if the lower frequencies of a boom microphone might cause the distortion. in all cases the audio levels were within safe range. I will build a simple zener diode clamper and see what happens. thanks
  10. +40dBu is for XLR inputs set to line level. ta3 inputs don't have the analog limiter xlr inputs do.
  11. thank you, you are referring to this http://realoldiesradio.com/?p=212 , however I am searching for a circuit that will attenuate the signal once it reaches a certain voltage, depending on which diodes are used. https://www.quora.com/How-do-protection-diodes-work I using the 633 with a 3 channel preamp made by vark audio.
  12. Hello, Can anyone suggest a circuit for a passive limiter, using diodes and resistors. I would like to know if it is possible to suppress audio signal peaks higher than +18dbu. (6.16v?). I am using a mic preamp, with line level out, into a recorder and constantly get digital distortion when there are fast transients like hand claps or even laughter. The recorder has a digital limiter but it does not help. There is a product available in the form of an xlr barrel, but I would like to know if it is a circuit I can put in a small box with ta3f in and out, or something I can add to the preamp out, internally. Thanks, Rodrigo
  13. rosa

    Fostex DV824

    I recently bought one of these for $70 and have been using it to record music at home. I saw on a couple of posts mention of software 2.25. The one I bought has 2.21. After cleaning it up it works well, but I am not able to export files to the computer, I believe because of the disc format UDF. Does anyone know if a later software would format the DVDRAM in Fat32, and if it is still available somewhere? Thanks, Rodrigo
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