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#1797006 - 11/28/11 02:52 AM Yamaha P-140 low AUX level
NoLuke Offline
Junior Member

Registered: 11/27/11
Posts: 2
Hi all,

I am trying to connect a Yamaha P-140 digital piano to a mixer. I find the AUX output levels to be quite low. On my mixer, there are +4/-10 buttons on the stereo channels, and the -10 dBV setting is not enough. Compared to other sources like computer line out, CD player (even mobile phone!) the piano is a whisper!

The piano's outputs are called AUX and have RCA connectors. The level is fixed (the volume slider on the piano does not change the volume on the AUX output).

I guess it is nice to have some headroom so that the connected equipment doesn't clip, but even if I hit the keys very hard, I'm not even near.

I have heard talk about a test mode on some other Yamaha P series piano. It is supposed to emit a 1 KHz tone at a specific level or something like that. Does anyone know anything about this? Can I connect a 1 kOhm load and an oscilloscope and check if they work as intended?

Thanks in advance!

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#1797180 - 11/28/11 12:51 PM Re: Yamaha P-140 low AUX level [Re: NoLuke]
ChrisA Offline
3000 Post Club Member

Registered: 12/28/08
Posts: 3841
Loc: Redondo Beach, California

Does you mixer have inputs for a dynamic microphone? That should fix the problem.

The p155 replaced the P140 and it seems Yamaha fixed the problem. My P155 has 1/4 phone jacks with normal line level. That does not help you.

#1797272 - 11/28/11 03:24 PM Re: Yamaha P-140 low AUX level [Re: ChrisA]
JackieH Offline
Full Member

Registered: 11/03/11
Posts: 78
I am not sure if this might help you but on my Yamaha Tyros 4 this is a small knob on the back that adjusts the sound level output thru the AUX jacks independant of the Master Volume Control

I do not know if your P-140 has this knob


#1797376 - 11/28/11 05:44 PM Re: Yamaha P-140 low AUX level [Re: NoLuke]
NoLuke Offline
Junior Member

Registered: 11/27/11
Posts: 2
Yes, the mixers has mono inputs with gain control. That solves my problem, but I am wasting two mono channels when I could have used one stereo.

No, the P-140 does not have this knob on the back, that would have been perfect. Maybe I shold install one myself. If someone has the schematics for the P-140, feel free to send me a copy! :-)



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