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CAVA

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Everything posted by CAVA

  1. Interesting Project. The PX350 has two connectors for pedals. The standard connector with "mono" 1/4¨ connector at the back and another that uses a propietary connector for the 3 pedal unit located at the bottom of the piano. I suggest you start with a simple damper pedal and then you will use the mono 1/4¨ connector at the back (https://en.wikipedia.org/wiki/Phone_connector_(audio)). That conector uses an off/on signal but it doesn´t mean you can short the two ends and it is on or off, you will probably have some impedance there. I don´t have my CASIO pedal anymore but I have a M Gear (https://amzn.to/3b4jmg9) which has a switch at the bottom so you can use it with a CASIO or a Yamaha, I measured the connector with a tester. In the position ¨normaly open" with the pedal not pressed, if I measure between ground and signal in the connector, it appears as open, if I press the pedal, it measures 100 ohms. This means you can build your own pedal with a 100 ohm resistance and a simple switch. You still need to test what "polarity" to use in the cables but, don´t worry, I don´t think there is a risk of damaging the keyboard if you test in both positions. I suggest to do a google search, there are a lot similar projects with detailed instructions. Of course the project to build a 3 pedal unit (https://amzn.to/3f9ylbI) is more interesting but a lot more complicated project but it offers half damper which would make it interesting. I found this in the forum, there are probably others out there: I hope this helps.
  2. Checking the manual, it seems that your only option is to use MIDI or the Audio output to record externally. You might record in the internal memory and record using the Audio output when you playback the recording.
  3. Excellent news! Be careful, do not operate the piano with the 1Amp power supply, you could damage both.
  4. That could work for testing. Please notice the standard power supply is rated as 1.5 Amp so you can use the one offering 1A but avoid high loads or it will damage the power supply. To avoid high loads, just plug the piano, turn it on and press a few keys at low volume, it should confirm everything is correct on the piano side and you will confirm you need to buy a new power supply. About the connector with the 3rd pin, I am not sure about the pin out, I found it is called "barrel 5.0/3.0 with central pin" but I couldn´t find information about the function of the central pin, I see some laptops use something similar for a signal between the charger and the laptop and, without it, the power is not delivered, but Casio probably did something specific with it. You mentioned you feel comfortable doing electronic reparations so you might test the power supply with a simple circuit and even be able to measure the current it delivers. You already know it works at 12V, 1.5 Amp, so, by using a simple Ohms law, you could use a load of 8 ohms or above. Review those calculations and see what makes sense in your testing, probably using a simple circuit. Be careful, there is a risk of damaging the power supply, your piano or hurting yourself in the process.
  5. May I suggest to focus your attention on the power adapter? I know you mentioned you measured 12V on the plug but, if damaged, it might not support a load. You might want to try a different one, it is listed as 12V 1.5 Amp so any adapter with a higher amp rating will do it. Issue is I see it has a pin in the center. In any case, I have seen that adapters get damaged with a power surge and they keep showing the voltage expected but are not able to support a load.
  6. I don´t have my PX350 anymore but doing some research I see there is a hard reset or factory reset option that might help if the issue is related to software or an start up issue. They suggest to "Hold down the GMTones button and the Function Button simultaneously while powering up the unit." Check this: https://www.keyboardforums.com/threads/how-do-i-reset-the-factory-settings-casio-privia-px-350m.28570/ I hope this helps.
  7. Suggestions: 1- Test other outputs, i.e. the Line Out. This will help to identify if the issue is related to the speakers 2- Check if something is stuck in the headphones output or the Line Out. When something is plugged there, there is no sound in the speakers 3- Check if some noise is generated when you move the volume nob in different directions. If you hear a strange, sound, the issue might be with that potentiometer. 4- Check what Brad suggested about MIDI Local Control, it should be ON I hope this helps.
  8. Thanks for the additional details. I found those on Aliexpress starting at 23 USD. I think the model with the 4 vents is the Studio Reference because I found a similar picture at Aliexpress.
  9. Thanks for sharing this. One question, I see there are 3 versions of the SR850: Studio, Basic and Studio Reference. What version did you use in your tests? Thanks.
  10. Brad is right, I have bought these in Amazon before: https://goo.gl/fWxFrW 6.35mm (1/4 inch) Male to 3.5mm (1/8 inch) Female Headphone Jack Plug
  11. I had a similar experience with my PX350. What I found was that not all headphones will sound the same with the CASIO. I tested some really cheap earbuds, Apple wired earbuds, low-cost headphones, a Harman Kardon CL (https://goo.gl/2AcSy6), a Bose QuietComfort 25 (https://goo.gl/GcVGDM) and a Sennheiser HD 219 S (https://goo.gl/jXN7Ev). What surprised me was that the Bose sounded really bad and something similar happened with the cheap headphones. I obtained great results from the Sennheiser and acceptable from the Harman Kardon and the earbuds. I tried with different combinations of cables, adapters (from 1/4 to 3.5mm since the piano is 1/4 but the headphones have a smaller connector), I also tried the two connectors on the back of the piano, one of them is mono and the one for headphones is stereo. What I am using right now for my daily practice are the Harman Kardon. My conclusion is that these Casio pianos will not work with all headphones and it doesn´t matter if they are studio, high quality, expensive, etc. So you need to test with different headphones until you find one that sounds as expected. I wouldn´t recommend to spend a high amount on headphones for this specific use because they might not sound as you expect. I hope this helps.
  12. I would like to share an update. I took the pedals apart, there are 6 screws at the bottom, and I checked everything inside, specially the right pedal mechanism. I couldn't find anything unusual or the source of the noise but I tightened all screws, added a little bit lubricant to the moving parts and assembled everything back. Now, I don't have the annoying clicking noise and the pedals are working fine. I hope this helps anyone with a similar issue.
  13. I had a similar issue and my low cost solution was to connect a 5.1 Speaker system with a Sub. This is Logitech X-540 system available for PCs and I connected the headphones output to it so I can have the "stereo" effect and I placed the small speakers behind the piano. The Sub is below in the floor and the "bass" effect is set at 50%. The result is a more full sound with more bass. I also connect a set of headphones to the Logitech system for a better audio quality in headphones. I hope this helps.
  14. This might help: i suggest to disconnect power before attempting to do this and wait a few hours before plugging in again. I suggest also to disconnect all other plugs from the keyboard, i.e. external speakers, and try different headphones and earplugs; you might find that earplugs with lower impedance might give you some sound and hints about the origin of the problem. Have you tried to connect your headphones to the Line Out on the back of the keyboard? Are you using a converter, i.e. from 2.5mm to 1/4? If you do, test in a different equipment to see if it has an issue. I hope you can fix your problem.
  15. Thanks a lot for your answer. I will see if I can get the AKGs. I do know those are really good headphones. I found them for 67 USD in Amazon.
  16. In case someone is interested I have tested the following obtaining good results: I connected a small Amp to the headphone jack and the headphones to the Amp. The result was an immediate improvement in volume and sound quality using the Harman Kardon, the improvement was marginal with the Bose Q25. I used a Lepai Class T 2020A for this test but I am planning to buy a headphone Amp of better quality.
  17. Thanks a lot for your answer. Yes, this is a mechanical sound when the pedal is pressed. It is still in guarantee period but they said they won't give me another but they will send it for review which worries me.
  18. My Privia PX-350 seems to be very temperamental about head phones. The only Headphones producing a decent (But not perfect) sound are the Harman Kardon Classic. I have tried with a pair of Bose Q25 using the original cable and a 1/4 adapter and using a special cable with a 1/4 connector and the sound is really bad. I have tried with a pair of Sony (Low cost, about 40 USD) with similar results. I have tried multiple combinations: Only the headphones connected, Headphones+a cable in the Amp out, Headphones in the Amp out. Any recommendations of what headphones I should use to obtain good audio from the Privia or should I consider a Headphone amp? PS: I know audio quality is very subjective but what I obtain is low volume audio with really bad definition. Thanks.
  19. Please your help. I would like to hear from other SP33 owners if their Damper Pedal makes a clicking noise when pressed. My SP33 unit is brand new and has this problem since day one. It seems to be a mechanical issue and it is not permanent, I mean, if I press it slowly, nothing happens but any rapid action will make the "click" sound. Any help is appreciated.
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