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Connect speakers to yamaha P90

How do I connect boston speakers to P90

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P90 sustain sound won't stop some times when am playing


You could have-
dirty contacts on the switch inside the pedal
dirty contacts in the jack the pedal cable plugs into
a cold/loose solder joint where the cable connects to the plug or to the switch.
If you rule those all out it's an internal problem with the pedal, which you can check by using another pedal, or it's internal to the P90, which will need to go to the shop.

Feb 25, 2015 | Yamaha Music

1 Answer

P90 sustain sound won't stop some times when am playing


Check and see if there is a switch on the foot pedal. Check the P-90 menu under footswitch to make sure it is set to sustain.

Feb 25, 2015 | Yamaha Music

1 Answer

Yamaha emx 88s


amplifier module faulty, it may even damage your speakers if it had dc on the speaker terminals. have a qualified technician to check and confirm all components.

Dec 11, 2014 | Yamaha Music

2 Answers

Can I connect only one speaker to a yamaha emx 312 sc power mixer?


First it is certain that you would not want to plug both outputs of the stereo power amp into one speaker combining both channels into the same speaker. (see image from manual below - also link to manual)

Next I would be very concerned about only using the one side of the main amp out as it could cause an unbalanced load, or you could be driving the load into dead air connection and any of these conditions are destined to cause premature failure of the power amp.

Taking a quick scan of the manual for this unit, it appears what is pretty common to most powered mixers, hook up two matched speakers/loads to each chanel of the output.

Your best bet is to shed those monster cabs, there really is no need for them especially with this sized powered mixer, and get yourself a nice pair of full range cabs like EV1202;s, EV SX300's, or some nice 2 or 3 way 15" JBL's/

Just my opinon.

Link to Yamaha EMX 312 Owner's Manual:

Yamaha EMX Series Owners Manual


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Dec 06, 2013 | Yamaha Music

1 Answer

Hello, I have a Yamaha P90. 4 keys are not responding. all others are ok and give sound. What happened ?


If they are the same note- different octave- it may be a bad solder joint near the main oscillator IC.

If they are the same cluster (adjacent white keys or adjacent black keys) in the octave, it may be a faulty wire connection.

Apr 01, 2012 | Yamaha P90 Digital Piano

1 Answer

I have a hardly used Yamaha p90. I get very little sound from the speakers esp. the left one. I sprayed the volume switch with de-ox-it? as suggested but now have no sound at all. I took the case and...


NEVER use de-oxit in a volume control potentiometer !!! Use it ONLY on metal switch contacts.

De-oxit will destroy the lubrication in pots and the resistance element.

You MIGHT try CRC226 which is safe to use. It is available at Home Depot in the electrical dept. Blue can, about $2.75. Make sure it is CRC226 as there are other CRC products there which are not applicable.

The volume control may be damaged now and may need replacement. They are not expensive other than the labor to install it.

Sep 07, 2010 | Yamaha Music

1 Answer

Displays code Scn


Either the keyboard is disconnected or the Keyscan on the keyboard itself is but. More than likely a loose connector.

Jun 02, 2009 | Yamaha Music

2 Answers

Old yamaha electric guitar


Santana's had quite a few guitars, take your pick:
1972 - Gibson Les Paul / Gibson SG Special with Humbuckers / Gibson L-6S
1975 - Gibson SG Special with P90 pickup (Woodstock Festival)
1976 - Yamaha SG 175B / Gibson SG Special with 3 Open Coils
1982 - Paul Reed Smith (PRS) Custom
1988 - PRS Santana II with PRS Santana III nickel-plated pickups and .009-.042 D'Addario strings

Nov 10, 2008 | Yamaha Electric Guitar

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