Can anyone tell me what the input and output impedances are for
the Barix Extreamer 110?
the Barix Extreamer 110?
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Barix Impedances
- Thread starter perenoel6218
- Start date
Why do you ask?
It is 99% likely it has low impedance outputs and high impedance inputs.
It is 99% likely it has low impedance outputs and high impedance inputs.
Ethernet input, Stereo RCA jacks (meaning Hi-Z unbalanced), 3.5 mm Headphone Jack, both 4Vpp max (8Vpp in bridge output mode) outputs
Without sounding snarky (if that is a word) you could probably have Googled BARIX and got the complete spec sheet downloaded in the time it took you to post this question. click here: http://www.barix.com/downloads/Exstreamer_Family/71/
Without sounding snarky (if that is a word) you could probably have Googled BARIX and got the complete spec sheet downloaded in the time it took you to post this question. click here: http://www.barix.com/downloads/Exstreamer_Family/71/
Typical engineers....the man asks the Exstreamer impedance, one poster says low output, high input - of course doesn't give a specific impedance...i.e., he doesn't know and is guessing....the other shows you the link to the manual (which, btw doesn't note the impedance).....thus doesn't know either and is guessing.....
Yes, I'm an engineer and and engineering manager....these are the kind of responses that frustrate me from my team....
So the question is still valid - does anyone know the output impedance of the Exstreamer...I'd guess 10k unbalanced...but I'm guessing....and I can't find it in writing.....
Yes, I'm an engineer and and engineering manager....these are the kind of responses that frustrate me from my team....
So the question is still valid - does anyone know the output impedance of the Exstreamer...I'd guess 10k unbalanced...but I'm guessing....and I can't find it in writing.....
I am not going to spend much time on it unless s/he can answer the question "why do you ask".
sonic said:
I'm pretty sure he's wanting to understand/identify any impedance mismatches in his audio chain. A valid concern.....he may need a matchbox - maybe not - depends on the what the Barix does. But I'm pretty sure you don't know (you would've answered such a simple question already)...I think Barix will have to reveal this answer.
I greatly prefer mismatched impedances on analog audio interfaces since I am not concerned about power transfer.
As long as the inputs are higher impedance than the feeding equipment, and the outputs are lower than the impedence of the destination device, all is great.
Since this is true 99% of the time with modern equipment, I am quite curious why the OP is asking this question.
If the question is about levels, this has been answered.
As long as the inputs are higher impedance than the feeding equipment, and the outputs are lower than the impedence of the destination device, all is great.
Since this is true 99% of the time with modern equipment, I am quite curious why the OP is asking this question.
If the question is about levels, this has been answered.
sonic said:
I went to the website. Can't find the information specifically.
I suggest [email protected] and you will get a prompt reply.
I ahve been using these for quite some time. If I say ten it may be more in the field.
The input is high impedance (exactly what I am not sure) but can be driven with a variety of products. The output has either an RCA stereo jack or headphone type output. Normally this can drive 600 ohm equipment.
We use this to feed off site network stations on one of our state wide networks. The proof is done at the network station's site (mixer at the transmitter). I am not sure the mp3 version of the 100 or 110 (it has an lcd display but is no different in operation otherwise) will pass a proof.
Most engineers want the whole story not a part of it. If you don't want to tell why why should someone share knowledge about something and then find out they didn't have the whole story?
WITT is a new station with an eclectic mix of music. Some audiophiles are griping about the music.
The station feeds audio from a computer (what type of audio and sample rate?) to an analog console (yes?) hopefully to a limiter (what kind? - don't tell me no limiter because that's bad) prior to the barix instreamer or ogg vorbis encoder encoding mp3 on a computer.
How the station interfaces the computer audio and it's files (and type of audio file) through the chain to the mp3 encoder and the the levels are very important. Most computers do not have the input level variation you really want (to encode) and until you dink with it for a long time you will not get it right.
On the receive end you will have to use an interface from unbalanced (regardless of the impedance) to balanced to get the level hot enough to make this work into the audio processor. Because of the artsy fartsy format the station is not using heavy compression but wants to be loud. This is the problem. Any compression will enlarge any audio problems from the encoding end. And your transmitter site is near 50 kw 1070 AM so any ground issues will be noted very evident. Radio SHack used to sell a transformer with rca connectors. This is a start. MAI parts has various filters for AM AND FM rf. Depending on your situation your rf could be an issue.
We have worked through many of these issues which came down to good engineering practice. You have many issues fixed because Jeffe Goode did the install.
If you want to maintain audio purity without a real stl place your source material at the transmitter site and use the barix for feeds. Because of the delay you can't have the station in the headphones so it's a matter of delay and how much anyway.
And this is like any other audio chain. Once it is working lock the controls to keep people from changing them. or things will go from good to bad quick.
Give us the whol scoop on the WITT audio chain so we can all guess at the particulars of the problem., and, GOOD LUCK.
I suggest [email protected] and you will get a prompt reply.
I ahve been using these for quite some time. If I say ten it may be more in the field.
The input is high impedance (exactly what I am not sure) but can be driven with a variety of products. The output has either an RCA stereo jack or headphone type output. Normally this can drive 600 ohm equipment.
We use this to feed off site network stations on one of our state wide networks. The proof is done at the network station's site (mixer at the transmitter). I am not sure the mp3 version of the 100 or 110 (it has an lcd display but is no different in operation otherwise) will pass a proof.
Most engineers want the whole story not a part of it. If you don't want to tell why why should someone share knowledge about something and then find out they didn't have the whole story?
WITT is a new station with an eclectic mix of music. Some audiophiles are griping about the music.
The station feeds audio from a computer (what type of audio and sample rate?) to an analog console (yes?) hopefully to a limiter (what kind? - don't tell me no limiter because that's bad) prior to the barix instreamer or ogg vorbis encoder encoding mp3 on a computer.
How the station interfaces the computer audio and it's files (and type of audio file) through the chain to the mp3 encoder and the the levels are very important. Most computers do not have the input level variation you really want (to encode) and until you dink with it for a long time you will not get it right.
On the receive end you will have to use an interface from unbalanced (regardless of the impedance) to balanced to get the level hot enough to make this work into the audio processor. Because of the artsy fartsy format the station is not using heavy compression but wants to be loud. This is the problem. Any compression will enlarge any audio problems from the encoding end. And your transmitter site is near 50 kw 1070 AM so any ground issues will be noted very evident. Radio SHack used to sell a transformer with rca connectors. This is a start. MAI parts has various filters for AM AND FM rf. Depending on your situation your rf could be an issue.
We have worked through many of these issues which came down to good engineering practice. You have many issues fixed because Jeffe Goode did the install.
If you want to maintain audio purity without a real stl place your source material at the transmitter site and use the barix for feeds. Because of the delay you can't have the station in the headphones so it's a matter of delay and how much anyway.
And this is like any other audio chain. Once it is working lock the controls to keep people from changing them. or things will go from good to bad quick.
Give us the whol scoop on the WITT audio chain so we can all guess at the particulars of the problem., and, GOOD LUCK.
sonic said:
First I did not find the earlier response to his question neither productive nor informative. I told him what I KNEW and gave him the link to the manual which, as pointed out, does not actually state the impedances but is the most factual source of information available. There is also the link to email barix should he still have questions.
But, in my many years of doing this, and prior to AES and its impedance, we really were faced with only two choices for line level devices. Low, meaning 600 ohm balanced, and high which was >10k ohm and unbalanced. Mostly referred to in catalogs as home and professional connections. I did state that the output was RCA connectors (Hi-Z and unbalanced). That info alone should be enough for him to look at what he wants to connect it to and decide if he needs a matchbox or not.
For the Chief Engineer, with this thing at the TX site I am glad you are using a matchbox or something similar to get it to 600 ohm and balanced fairly quickly with all that RF running around plus I am sure that is what the remainder of your professional audio chain, if not just the transmitter input terminals, are looking for. But did you really need to know the exact output impedance? I didnt think so. You did bring up one point that I was wondering about with a customer wanting to use these as an STL. With the compression inherent in the MP3 coding I dont want to do a lot of processing at the automation end because we would be compressing compression. How are people dealing with this? This is for a small AM music format so we wont have audiophiles to p*** off ;D
The audio chain for WITT is actually simple....mic/cd players at studio into analog mixer, then into Barix Instreamer....out of Barix Exstreamer at tower into M-Audio 192 (PC card) line-in. M-Audio line-in is 10K unbalanced - thus should match Exstreamer. M-Audio output is balanced 300/600 ohm into NiCom Jupiter Stereo Generator/Audio Processor and onto exciter/transmitter. This allows live broadcast through Barix from studio or switch over to automated programming via tower PC. Problem is the sibilance at the high end - we suspect Jupiter...as listening to Barix straight from headphone jack sounds perfect, sound via M-Audio monitor jack sounds perfect, sound over the radio - sibilance/distortion at high end. Thoughts?
B
BofH
Guest
sonic said:
As you already have that PC in your airchain - try installing a copy of Breakaway Broadcast.
http://www.claessonedwards.com
It will completely replace your Stereo Generator/Audio Processor and you can literally feed the output of the M-Audio into your exciter/transmitter. This will easily allow you to confirm if the fault lies in this part of your chain - also you will find Breakaway provides far better audio than your existing Stereo Generator/Audio Processor.
Nostalgia said:
"the output was RCA connectors (Hi-Z and unbalanced)"
I doubt very much the outputs are Hi Z. The information in my guess is far more likely.
From a practical perspective the input/output levels is far more likely to be useful (and was included in the info you provided).
Happy Independence day to all
G-
R
RolfTaylor
Guest
Check and make sure you do not have pre-emphasis happening twice. And NOT before the Barix.
The other thing that frequently helps with MPEG coding is a slight rolloff of the treble region. Just a slight change can make a difference.
Good Luck
Rolf Taylor
Applications Support Engineer
APT-Audemat
The other thing that frequently helps with MPEG coding is a slight rolloff of the treble region. Just a slight change can make a difference.
Good Luck
Rolf Taylor
Applications Support Engineer
APT-Audemat
It doesn't sound like double preemphasis on the air. Station is overmodulated according to the mod monitor on a whip antenna at your site.
The question I have is why use the headphone out of the barix instead of the rca outputs unless you have a level issue?
Most processors can accomodate multiple levels in. More things in line allow more problems.
Because you have essentially two studios (transmitter and Indianapolis) do both have the s distortion? If so you have a limited point of possibility. Jupiter (set too high causing distortion because of overmodulation - which is what it sounds like based on mod levels compared to another nearby station using an Omnia5). Computer.
This apparently isn't a barix issue unless you have been operating from the Indianapolis studio since sign on.
You can't just expect the Jupiter to be as loud as an Onmia 5.
Another Non Com has been running the Omnia 5 with little changes in the setup. They play music that is contemporary.
WITT plays eclectic music, if you call it that. One local called it 24 hours of fecal material. They apparently don't share the refined viewpoint that some might have. The obvious is that this music is a varied type, variety, and more importantly dynamic range.
It's almost as if someone thinks they can get a common and loud level compared to contemporary music which they cannot. Sounds loud but well overdriven. Look at it on a mod monitor and decide how much distortion is acceptable for the loudness.
The question I have is why use the headphone out of the barix instead of the rca outputs unless you have a level issue?
Most processors can accomodate multiple levels in. More things in line allow more problems.
Because you have essentially two studios (transmitter and Indianapolis) do both have the s distortion? If so you have a limited point of possibility. Jupiter (set too high causing distortion because of overmodulation - which is what it sounds like based on mod levels compared to another nearby station using an Omnia5). Computer.
This apparently isn't a barix issue unless you have been operating from the Indianapolis studio since sign on.
You can't just expect the Jupiter to be as loud as an Onmia 5.
Another Non Com has been running the Omnia 5 with little changes in the setup. They play music that is contemporary.
WITT plays eclectic music, if you call it that. One local called it 24 hours of fecal material. They apparently don't share the refined viewpoint that some might have. The obvious is that this music is a varied type, variety, and more importantly dynamic range.
It's almost as if someone thinks they can get a common and loud level compared to contemporary music which they cannot. Sounds loud but well overdriven. Look at it on a mod monitor and decide how much distortion is acceptable for the loudness.
BTW You CAN expect Breakaway to be near as loud as the Omnia 5 but setup is a little more difficult as opposed to plug and play.
Ask and you shall receive:
Input impedance: 10 k ohms
Output impedance: 10 ohms
Output will drive any load from 8 ohms upward (the output amp is a 120 milliwatt per channel stereo amplifier).
The headphone output comes off the same amplifier, but its output coupling caps are half the value of the main outputs (60 vs 120 uf). To get low end down below 50 hz, I'd suggest running the main outputs into a load impedance of 25 ohms or higher.
Input impedance: 10 k ohms
Output impedance: 10 ohms
Output will drive any load from 8 ohms upward (the output amp is a 120 milliwatt per channel stereo amplifier).
The headphone output comes off the same amplifier, but its output coupling caps are half the value of the main outputs (60 vs 120 uf). To get low end down below 50 hz, I'd suggest running the main outputs into a load impedance of 25 ohms or higher.
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