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Joined: Jul 2014
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Originally Posted by gerhard_k
I haven't seen any cut-aways myself, but such a difference in the hinge mechanization would seem to be substantial enough to completely invalidate calling those actions both by the same name!

Yeah, the basic construction is the same though and they share many parts. The actual hammer action (beside the keys) might be completely interchangeable. Kawai would call it "GHS-IVF" or "GHS Compact". wink


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Originally Posted by gerhard_k
Originally Posted by JoeT

The P-45 action is obviously more cost optimized, featuring no hinges, instead the pivot seems to be just flexible plastic, as seen on YouTube videos.

Which might support the impression, that a flexible plastic hinge might be stiffer than an actual hinge.


I haven't seen any cut-aways myself, but such a difference in the hinge mechanization would seem to be substantial enough to completely invalidate calling those actions both by the same name!


They're not the same name, as Joe mentioned they are entirely different actions smile. The GHS in the P-45 is probably the lowest end action that qualifies as "acceptable" for a fully weighted digital piano. The NWX in the P-515 and CLP-645 is Yamaha's highest end pure digital action (short of the Grand touch in the CLP-675/685).


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Originally Posted by Gombessa
Originally Posted by gerhard_k
Originally Posted by JoeT

The P-45 action is obviously more cost optimized, featuring no hinges, instead the pivot seems to be just flexible plastic, as seen on YouTube videos.

Which might support the impression, that a flexible plastic hinge might be stiffer than an actual hinge.


I haven't seen any cut-aways myself, but such a difference in the hinge mechanization would seem to be substantial enough to completely invalidate calling those actions both by the same name!


They're not the same name, as Joe mentioned they are entirely different actions smile. The GHS in the P-45 is probably the lowest end action that qualifies as "acceptable" for a fully weighted digital piano. The NWX in the P-515 and CLP-645 is Yamaha's highest end pure digital action (short of the Grand touch in the CLP-675/685).


The comparison was between the GHS action on the Yamaha P-45 and GHS action on the P-125, not between the P-45's GHS and the P-515's NWX.



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Originally Posted by halherta

The comparison was between the GHS action on the Yamaha P-45 and GHS action on the P-125, not between the P-45's GHS and the P-515's NWX.


Originally Posted by gerhard_k

The P-45 action is obviously more cost optimized, featuring no hinges, instead the pivot seems to be just flexible plastic, as seen on YouTube videos.

Which might support the impression, that a flexible plastic hinge might be stiffer than an actual hinge.


Quote
I haven't seen any cut-aways myself, but such a difference in the hinge mechanization would seem to be substantial enough to completely invalidate calling those actions both by the same name!




Well, ok. But there's zero difference at all the in the hinge mechanism between the GHS of the DGX and the P series (both of which are GHS, and both are single piece plastic cantilevers), but the hinge is entirely different between the GHS and the GH/NWX....



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Thanks everyone. I try to be pretty consistent in how I tested the pianos. Of course, warming up on the a grand or upright first will make the DP feel less than ideal but it's how I set my frame of reference. Since these are floor models, there could be changes due to use so I try to play some chords and scales at both ends of the keys to check that the feel is similar. It's unlikely I have the keen ear and touch some of you have, so I take all that has been shared into consideration and combine that with what seems good for me.

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