Dit zijn zo genaamde grey market piano's ( geimporteerde gebruikte instrumenten )
Ze zijn gemaakt voor een veel vochtiger klimaat dan in nederland, veel ouder dan je denkt en ondanks dat er een revisie heeft plaatsgevonden zitten er geen nieuwe zangbodems in.
De handelaren ontkennen dit uiteraard en zullen je vertellen dat dit niet zo is.
Officieel bericht van Yamaha https://hub.yamaha.com/four-things-you-need-to-know-about-gray-market-pianos/
Have you ever heard the term “gray market piano”? Many people shopping for pianos may come across this phrase when doing research online or speaking with a dealer. Shopping for a new piano can be a daunting task, and if you have little (or no) experience buying one, it can be easy to be misdirected by sellers offering gray market pianos – instruments purchased in large quantities in Japan or other Asian countries, packed into shipping containers, and then brought into the United States for resale. They may be great instruments in excellent shape – and they often come with an attractive price tag – but before you jump at the opportunity to buy one, there are a few things you need to know:
Only a handful of piano makers, including Yamaha, build pianos specifically for the three major world markets: Asia, which is a moist climate; Europe, which is fairly dry by comparison; and the U.S., which is considered to be extremely dry. (Keep in mind that we are talking about the INDOOR climate, as opposed to outdoors.) In winter, heating systems remove substantial moisture from the air, and in summer, air conditioning systems also lower the humidity. In addition, American homes tend to be better insulated than homes in many other countries, further isolating the interior from whatever moisture might be in the outside air.
The problem is that, when a piano that’s intended for a moist climate is placed in a dry environment, there is the likelihood that its structural integrity will be threatened as the wooden parts lose moisture. This in turn can cause warping of case parts, cracks in the soundboard and/or loose tuning pins. And while soundboard cracks are often only cosmetic in nature, loose tuning pins will have a direct effect on the ability of the piano to hold its tuning. If that happens, the only practical solution is to re-pin the piano with oversized tuning pins – a procedure that typically comes with a fairly high price tag, since it often encompasses re-stringing the piano too. That’s why, when Yamaha builds pianos destined for the U.S., it seasons the critical wooden components – including the soundboard, bridges, ribs and pin block – by drying them to a much lower moisture content using computer-controlled kilns and other advanced manufacturing technologies.
Officieel bericht van Kawai What Should I Know About Used Kawai Pianos? (kawaius.com)
Many customers have heard that there is a difference in “wood seasoning” between pianos built for the Japan market and those built for the North American market. Because of Japan’s consistently humid climate, Kawai pianos built for Japan in the past were indeed seasoned differently from those intended for North America. As a result, Kawai regularly receives reports of used piano problems caused by this transition from a more humid to less humid climate. Customers should know that such problems do occur, especially if the used piano is moved into a drier environment within North America.
Current production instruments are well seasoned for North America and the world and, therefore, are far less susceptible to the problems outlined above.
Though not all used pianos will be affected by the seasoning issues mentioned above, certainly all will be affected by the fundamental instability of wood in all piano actions. This instability compromises both the tone and touch of a piano.
Dat dit soort piano's op vloerverwarming en bij hete lucht verwarming niet lang zullen meegaan is dus wel duidelijk.
Stempennen die los gaan zitten en gescheurde zangbodems.
Let dus op bij de anschaf van een gebruikte yamaha of kawai en vraag waar het instrument vandaan komt.