TLDR; for the actual question skip to the bold bit.
So, it seems like an obvious one that shouldn't be hard to google the answer to, but not for me... Hence I turn to the diyaudio forums. While I suspect it won't take much brain power from someone with the knowledge I lack, apologies for the potentially dumb question and thanks in advance for your time even just reading it.
THE ACTUAL QUESTION:
If I have two 1v RCA outputs producing identical audio signals, would using a Y-cable to connect them both into a single RCA input give me perfect a 2v audio signal at the other end?
Reason I ask: I'm wondering if two linked (so allegedly identical) channels at 0.9v from a standard miniDSP would provide a healthier 1.8v "close enough to line level" signal at the end. A simple question made complex by my lack of knowledge in this field.
Should anyone cleverer than me reply and it's a simple yes/no... That's a perfectly acceptable one word answer as far as I'm concerned.
If it's a "technically yes ish but there's a few other issues at play which one would need to factor in and compromise the etc etc etc" sort of answer... The chances of me grocking it are slim to none. In that case free to just paste "yes but no" straight into the reply box😀
Thanks for any help... And even just reading it this.
jjams.
So, it seems like an obvious one that shouldn't be hard to google the answer to, but not for me... Hence I turn to the diyaudio forums. While I suspect it won't take much brain power from someone with the knowledge I lack, apologies for the potentially dumb question and thanks in advance for your time even just reading it.
THE ACTUAL QUESTION:
If I have two 1v RCA outputs producing identical audio signals, would using a Y-cable to connect them both into a single RCA input give me perfect a 2v audio signal at the other end?
Reason I ask: I'm wondering if two linked (so allegedly identical) channels at 0.9v from a standard miniDSP would provide a healthier 1.8v "close enough to line level" signal at the end. A simple question made complex by my lack of knowledge in this field.
Should anyone cleverer than me reply and it's a simple yes/no... That's a perfectly acceptable one word answer as far as I'm concerned.
If it's a "technically yes ish but there's a few other issues at play which one would need to factor in and compromise the etc etc etc" sort of answer... The chances of me grocking it are slim to none. In that case free to just paste "yes but no" straight into the reply box😀
Thanks for any help... And even just reading it this.
jjams.
No.
You should learn at least the very basics. Ohms, Kirchhoff's laws, series and parallel connections, etc.
You should learn at least the very basics. Ohms, Kirchhoff's laws, series and parallel connections, etc.
NO [2]
IF both Signals were exactly same as in MONO, you would have 1V (minus voltage drop across mixing resistors when driving any load).
IF different (stereo), you will have 0.5V since each one loads the other.
IF both Signals were exactly same as in MONO, you would have 1V (minus voltage drop across mixing resistors when driving any load).
IF different (stereo), you will have 0.5V since each one loads the other.
Exactly the answer I needed.
This being the first time it's ever come up and being mortally terrified of mathematics... I've avoided electrical knowledge past the level of the layman and just plugged things in as they were designed to be used. However as you correctly point out, the fundamentals would indeed have been more than a little useful today. I've put them on my "get a basic grasp of it" list and and I'll see if I can get them processed one evening when my mental state is conducive to such areas of study.
Many thanks.
A little more in-depth, thanks. As mentioned above it's all greek to me but I appreciate the reply, and will one day understand it.
jjams
You would probably create a distorted signal due to the two outputs fighting each other. Never connect outputs together directly.
What you need is a resistor combiner to mix the two audio signals safely. Values around 1k to 5k are suitable in most circumstances.
The output voltage will then be an instantaneous average of the two signals.
This link might help: Multiple Options for Passive Audio Mixer - Electrical Engineering Stack Exchange
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I seem to have fell into the deep end when I'm still scared to get my toes wet...
Link has been bookmarked for later, and until I know (a lot) more, I'll keep plugging things in as they were designed!
Link has been bookmarked for later, and until I know (a lot) more, I'll keep plugging things in as they were designed!
There are many free on-line electronics lessons, at all levels.
Electronics Class - Instructables
https://www.electronics-tutorials.ws/
Online Electronics Classes | Start Learning for Free | Skillshare
Electronics Class - Instructables
https://www.electronics-tutorials.ws/
Online Electronics Classes | Start Learning for Free | Skillshare
Thanks.
The audio side of it makes the maths terror potentially worth it.
I'll add them to the audio bookmarks folder - and if there's anything for a dyslexic 39 year old ADHD kid who still has to add numbers on his fingers, I'll get my learn on.
The audio side of it makes the maths terror potentially worth it.
I'll add them to the audio bookmarks folder - and if there's anything for a dyslexic 39 year old ADHD kid who still has to add numbers on his fingers, I'll get my learn on.
The miniDSP 2x4 kit board has a jumper to select .9V or 2V output. Maybe look inside the box to see if the same jumper is present?