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Gear / Technical Help => Recording Gear => Topic started by: blackdiesel on April 05, 2007, 08:45:09 PM
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INorder to plug mics in the optical input, do I have to use a Hosa signal converter? If so, what's the difference between a Hosa 276a and a 312? Thanks in advance.
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INorder to plug mics in the optical input, do I have to use a Hosa signal converter? If so, what's the difference between a Hosa 276a and a 312? Thanks in advance.
What is your signal coming out of, and what kind of cable is it? That would determine what you need (if anything).
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INorder to plug mics in the optical input, do I have to use a Hosa signal converter? If so, what's the difference between a Hosa 276a and a 312? Thanks in advance.
First of all, as you may know, you'll need a digital signal at the input of the NJB3. If I'm not wrong, HOSA only converts coax to optical and reverse, so you may need a preamp which could make that A/D conversion (AD-20, UA-5,etc...)
That way you'll need similar setup to: mics > preamp > digital > NJB3
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Thus far I have a JB3, a pre-amp and some Church mics.
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What are some A/D converters? Please give the name-brand and model so I can look them up. What are some suggestions?
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The Denecke AD-20 is a popular and small(er) A>D.
Sound Professionals sells them. Not sure if they are the cheapest, but I've heard good things about them otherwise:
http://www.soundprofessionals.com/cgi-bin/gold/item/DEN-AD20
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INorder to plug mics in the optical input, do I have to use a Hosa signal converter? If so, what's the difference between a Hosa 276a and a 312?
The JB3's optical input double as an 1/8" stereo analog input. So to answer your first question: you do not need a digital format converter to plug mics + battery box / preamp into the JB3's 1/8" analog input.
The Hosa ODL-312 and ODL-276 convert different digital formats to S/PDIF over optical cabling. The ODL-312 converts AES/EBU to S/PDIF over optical, while the ODL-276 converts S/PDIF over wire to S/PDIF over optical.
For the sake of discussion, let's make sure we distinguish between <1> digital format conversion (DFC) and <2> analog to digital conversion (ADC). Digital format conversion (like the Hosa ODL-xxx boxes) doesn't deal with analog signals at all. Digital format conversion simply converts one digital format to another. These DFCs are useful if one runs an external ADC that outputs a digital format different than the one required by the recorder's digital input. For example, the stock Lunatec V3 outputs S/PDIF over coax while the JB3 requires S/PDIF over optical. In this example, one might use a DFC - like the Hosa ODL-276 - that converts S/PDIF over coax to S/PDIF over optical. (One may also have the V3 modded to output S/PDIF over optical, but that's outside the scope of the example.)
Analog to digital conversion (ADC), on the other hand, converts the analog signal from your mics and battery box / preamp into the digital realm. The JB3 has an ADC built in, so technically you can just feed it an analog signal from your mics and battery box / preamp. In fact, I'd try that first and see if you like the results - if so, great. If not, then you can start looking at external ADCs.
What mics and battery box / preamp are you using? In what scenarios do you plan to record - open or stealth, loud rock & roll or unamplified acoustic or nature sounds or...?
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INorder to plug mics in the optical input, do I have to use a Hosa signal converter? If so, what's the difference between a Hosa 276a and a 312?
The JB3's optical input double as an 1/8" stereo analog input. So to answer your first question: you do not need a digital format converter to plug mics + battery box / preamp into the JB3's 1/8" analog input.
The Hosa ODL-312 and ODL-276 convert different digital formats to S/PDIF over optical cabling. The ODL-312 converts AES/EBU to S/PDIF over optical, while the ODL-276 converts S/PDIF over wire to S/PDIF over optical.
For the sake of discussion, let's make sure we distinguish between <1> digital format conversion (DFC) and <2> analog to digital conversion (ADC). Digital format conversion (like the Hosa ODL-xxx boxes) doesn't deal with analog signals at all. Digital format conversion simply converts one digital format to another. These DFCs are useful if one runs an external ADC that outputs a digital format different than the one required by the recorder's digital input. For example, the stock Lunatec V3 outputs S/PDIF over coax while the JB3 requires S/PDIF over optical. In this example, one might use a DFC - like the Hosa ODL-276 - that converts S/PDIF over coax to S/PDIF over optical. (One may also have the V3 modded to output S/PDIF over optical, but that's outside the scope of the example.)
Analog to digital conversion (ADC), on the other hand, converts the analog signal from your mics and battery box / preamp into the digital realm. The JB3 has an ADC built in, so technically you can just feed it an analog signal from your mics and battery box / preamp. In fact, I'd try that first and see if you like the results - if so, great. If not, then you can start looking at external ADCs.
What mics and battery box / preamp are you using? In what scenarios do you plan to record - open or stealth, loud rock & roll or unamplified acoustic or nature sounds or...?
Thanks, this is just the type of info I needed. I'm really a video guy, but decided to get a low budget rig strictly as a back-up audio source, so I mainly do open recording. I have Church Audio mics and preamp. I plan to record mostly loud rock and funk type bands. While doing video, I'm able to plug into the soundboard via a beachtek DFX if allowed and I also use a shotgun mic.
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Thanks, this is just the type of info I needed. I'm really a video guy, but decided to get a low budget rig strictly as a back-up audio source, so I mainly do open recording. I have Church Audio mics and preamp. I plan to record mostly loud rock and funk type bands. While doing video, I'm able to plug into the soundboard via a beachtek DFX if allowed and I also use a shotgun mic.
Based on the above, I stay to my previous recommendation: use the JB3's internal ADC and see how you like it. Since you're recording mainly loud sources (and have a preamp), run the JB3 line-in, not mic-in. On some units, running mic-in picks up some internal operation noise, so line-in's your safest bet.