RCA input low volume

Moderator: flatmax

flatmax
Posts: 602
Joined: Sat Jul 23, 2016 11:39 pm

Re: RCA input low volume

Post by flatmax » Sun Apr 09, 2017 12:19 pm

OK,

Now I understand whats happening. The instrument volume is too low !
I recommend using a balanced preamp before the audio injector.

Either this mono version :
https://www.amazon.com/dp/B00UIP0IPO
Or this stereo version - NOTE : although this one reads "factory seconds" they are actually non factory seconds versions - we used the wrong bar code :
https://www.amazon.com/dp/B016TXSLHK

Hope that helps.
Matt
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---
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guysoft
Posts: 10
Joined: Thu Dec 21, 2017 9:55 pm

Re: RCA input low volume

Post by guysoft » Tue Feb 20, 2018 10:45 pm

Hey,
Any chance you have link/model name of a device that is available? those device are not available anymore.

Aliexpres preferred.
I am kinda new to plugging in electric guitars to Raspberrypies and can't find anything to work.

Noiseshaper
Posts: 2
Joined: Tue Jul 31, 2018 6:59 pm

Re: RCA input low volume

Post by Noiseshaper » Tue Aug 07, 2018 5:41 am

Hi, I'm doing some tests with and AudioInjector card I received last week, and I have found that the RCA in recording level seems to be too low. The card is rev 1.5.

Doing a loopback test with a 0 dBFS 1 KHz tone I get a recording that is -14 dBFS. Shouldn't it be around -6 dBFS? Both potentiometers are set to max, alsa Mixer master gain is 0 dB and capture dB gain is 0 dB too. Is this right, or is the recording level too low?

Thanks.

guysoft
Posts: 10
Joined: Thu Dec 21, 2017 9:55 pm

Re: RCA input low volume

Post by guysoft » Sun Aug 19, 2018 10:28 pm

flatmax wrote:
Sun Apr 09, 2017 12:19 pm
his mono version :
https://www.amazon.com/dp/B00UIP0IPO
Or this stereo version - NOTE : although this one reads "factory seconds" they are actually non factory seconds versions - we used the wrong bar code :
https://www.amazon.com/dp/B016TXSLHK
Hang on - you made a preamp for the AudioInjector? It says its sold by "Flatmax Studios".
How does it compare to ones?
Is the input high-Z and work with electric guitars and such?

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