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Best way to amplify Yamaha CP-70
#2002913 12/22/12 12:42 AM
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I picked up a Yamaha CP-70 from 1977 at a used items store for $100 the other day (they had no idea what they had) and everything is in working condition. It does needs a tuning, though. The only amps I have at the moment are for electric guitars, and they don't make the piano sound too great. Maybe it's just because it's out of tune, but I don't know. Regardless, I plan on buying a proper speaker to amplify the piano and need some advice on what kind of speaker to purchase, so here I am asking you guys! What would be the best speaker(s) to buy?

Re: Best way to amplify Yamaha CP-70
Swiftwinter #2004626 12/26/12 01:55 PM
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You should probably ask this in the Digital Piano section since this section deals only with acoustic pianos.

Re: Best way to amplify Yamaha CP-70
Swiftwinter #2004631 12/26/12 02:09 PM
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Any good keyboard amp would do the job fine. You don't need the overdrive you'd get in a guitar amp and you need higher quality speakers (full range). All things you'd get in any good keyboard amp.


Steve Chandler
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Re: Best way to amplify Yamaha CP-70
Swiftwinter #2004729 12/26/12 09:51 PM
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I'd have it tuned, first, then re-evaluate. Make sure you get a tuner who has tuned these before - and can tune by ear. You got a great deal - they have been around 1 k here, with parts missing. Pick up or pre amp issues can make for poor sound on these as well.



Re: Best way to amplify Yamaha CP-70
Swiftwinter #2004731 12/26/12 09:58 PM
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Yamaha used to make a speaker that was amplified with a 15" white cone speaker and a horn, that was a fantastic speaker to amplify the CP70, but alas, they are near impossible to find now. JBL Eon speakers are great as well as other high quality self amplified PA speakers, even Bose 802's were amazing for this application. Best of luck with it, I hope it turns out to be a real gem.


Knabe 5'2" Louis XV Walnut circa 1927
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Re: Best way to amplify Yamaha CP-70
Swiftwinter #2004777 12/27/12 02:31 AM
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Most of the owners I've come across have a Fender Twin Reverb for it. But I agree a keyboard amp should work too. I personally use studio monitors for it, but want to upgrade.


Elizabeth
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Kimball 4520, Yamaha CP70-B, Yamaha PSR-150
Re: Best way to amplify Yamaha CP-70
Swiftwinter #2004794 12/27/12 04:45 AM
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The higher you drop them from, the louder they are.


Alan from Queensland, Australia (and Clara - my Grotrian Concert & Allen Organ (CF-17a)).
Re: Best way to amplify Yamaha CP-70
Swiftwinter #2014349 01/14/13 10:56 AM
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Try a QSC K12


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Disclosure : I am professionally associated with Arturia but my sentiments are my own only.
Re: Best way to amplify Yamaha CP-70
Swiftwinter #2014455 01/14/13 01:33 PM
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I have a Roland keyboard amp that does a very nice job. Don't recall the model (150 maybe)?

Anyway, it has a 15 speaker with the tweeters and has lots of power/volume. It also sounds pretty nice with a microphone as a PA system as well.

By-the-way, I think you can amplify an electric/digital piano through a good PA system as well.

Congratulations on your find, and welcome to Piano World!

Rick


Piano enthusiast and amateur musician: "Treat others the way you would like to be treated". Yamaha C7. YouTube Channel
Re: Best way to amplify Yamaha CP-70
Swiftwinter #2404480 03/30/15 01:57 PM
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So I know this thread is somewhat old, but I just purchased a Cp-70b and was wondering what everyone thinks about pairing it with a Marshall Class 5 tube combo amp? Seems like it has a big enough speaker to handle the low end, plus I think it would sound cool if I run effects through the cp-70b loop.

Am I missing anything? This is my first cp-70b and I am a relative novice when it comes to amps/effects.

Thanks in advance!


Re: Best way to amplify Yamaha CP-70
Swiftwinter #2404565 03/30/15 04:38 PM
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Greetings,
I tuned several of these back in the 1980's when I was the tuner for the local production company. I usually was using the sound from 5000 watt monitor systems. I wasn't using all that power, but I know that those speakers were up to anything you could do with them. A Marshal's beauty was their ability to add character to the sound, but the CP-70 has its own character, and needs little else. ETD's don't work on them, and they really won't ever sound in tune. The bass strings force a decision on which octave you want to sound right, and their distortion covers up a myriad of tonal implications. I was amazed that Leon Russell would go out on stage with one of these and play it solo, but they were also used by the Winter Brothers Band, REO Speedwagn, and Molly Hatchet,(I think), and lots of other acts that came through. More like a semi-tuned percussion instrument than a piano.

The best sounding amp I heard these through was an Ampex B-18, if I remember correctly.
Regards,

Re: Best way to amplify Yamaha CP-70
Swiftwinter #2404920 03/31/15 11:57 AM
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Thanks for the follow up Ed. I will make sure I use someone with experience tuning this piano.

As for the amp, I'd love to hear more opinions. Am I way off with the Marshall class 5? I want something I can get a clean piano tone from and also experiment with using effects.

Re: Best way to amplify Yamaha CP-70
Inspectorkrum #2405004 03/31/15 03:28 PM
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Originally Posted by Inspectorkrum

As for the amp, I'd love to hear more opinions. Am I way off with the Marshall class 5? I want something I can get a clean piano tone from and also experiment with using effects.


This is a very confusing thread for me. The CP-70 sounds like a CP-70. It doesn't sound like anything else, including a true acoustic piano. A Marshall combo amp is going to significantly color the sound, but as compared to what? There's really nothing to compare it to.

I wouldn't want to run it through a guitar amp (I'd use studio monitors or PA speakers with a relatively flat response) but you may love the sound through a Marshall. Or a Twin. Especially since you already plan on putting effects boxes into the chain, which will color the sound as much or more than the amp.

You sound like you may be a guitar player, so I'll put it another way. What's the best amp for a Telecaster? Ask ten different guitarists and you'll get ten different answers, because each will be looking for a different sound.

Larry.


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