hoosier:
I am not sure how much reliable source it is to you though.
It is from one of ScubaPro AsiaPacific country's representatives.
Like I said, he didn't mention the specific date yet.
Don't get your underwear in a bunch - I was not doubting the claim, just asking for the source of the information. I agree that most new SP developments seem to be released in Asia and then spread west to Europe and eventually to the US. Having the specifics adds a lot of information as to when, where, etc.
I also think the earliest a discontinuation of these models would occur would be next summer as that seems to be the time of year when the SP USA usually prepares their catalog for the following year and announces discontinued products.
Discontinuation of either one is no surprise given corrosion reports on the Mk 25 SA and the incredibly bad execution of the X650's introduction.
The discontinuation of the G250 would however be very bad news as it is a much better cold water reg than the G250.
FrenchFrog:
Well, I have both the MK25SA and the X650, LOL !!! I'm not surprised that they are going to discontinue the 25SA as it corrodes pretty bad. The light weight is wonderful but they did not get the alloy to be right once more !!! I never heard of a recall on the X650 so if anybody as any info on that I would appreciate. Compare to the 600 the only thing that I like better is the direction of the air flow away from your face and the light weight in the mouth. Against it, it is much harder to purge than a 600 and when upside down some water gets in your mouth, besides that I like it.
The X650 "recall" happened very shortly after it's introduction. It was not a safety recall but rather a recall designed to fix a problem with higher than desired inhalation resistance.
The original X650 worked quite well for a number of dives and then the inhalation resistance began to increase on it. It was discovered that the lever was causing wear on a bushing causing an increase in friction. The update took several months to develop during which time SP offerred new S600's as an exhange for customers who did not want to continue waiting for their X650s to be returned.
The update consisted of a new lever with a very smooth and rounded shape as well as a new diaphragm with an anti-friction plate. The new/updated X650s have a blue "X" in the X650 logo to differentiate them from non-updated X650's.
This reintroduction of the X650 was followed by a lenghy backorder period that I think further cooled sales. I waited 4 months to get one that I ordered.
One further problem is that it replaced the D400 (discontinued in 2003). The X650 is a fine reg compared to most others, but does not compare well to the D400. The X650 has a superb poppet and air barrel design and shares the D400's angled diaphragm design, but it does not have a coaxial exhaust valve/diaphragm like the D400. So the superb potential of the poppet design cannot be fully utilized without problems with a slight freeflow as air slips out the exhaust valve, which is considerably higher than the diaphragm in a normal swimming position.
The advantage of the D400's angled diaphragm design was that the center of the diaphragm was never more than .5" from the top of the exhaust valve, so any air escaping could not produce more than a.5" drop in presure inside the case. This meant that a very low but stable cracking effort of .7" to 1.0" was possible with no sustained trickle of air out the exhaust valve.
On the X650, the angled diaphragm is a fashion statement only as, lacking the coaxial exhaust valve and diaphragm, the angled design actually increases rather than reduces the vertical distance between the center of the diaphragm and the top of the exhaust valve. It's a case of either stupid engineering or the marketing folks calling the design shots.
That said and all negatives aside, I still like it better than the S600 as it is much more reliable in cold water and does very well even at depth in 34 degree water - conditions where the S600 is prone to freeflow and freeze ups. The X650 is my second stage of choice on my Kirby Morgan M48 full face mask.
If I were King of Scubapro, I'd redesign the X650 to use a coaxial exhaust valve and diaphragm. It would require a new case that eliminated the hole for the exhaust valve and the current exhaust tee, as well as a redesigned lever, diaphragm and a purge cover with provisions for either exhausting exhaled air or routing it to a redesigned case mounted exhaust tee. The new design would create a second stage that uses the X650's excellent poppet and air barrel in a case that would take full advantage of the angled diaphragm and coaxial exhaust valve design. And it would also keep the commonality in adjustment and parts that the X650 shares with other SP poppet designs - the major drawback of the distinctly different to service and adjust D400.
The X650 has evolutionary potential, but it is just not quite there yet.
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