Inconsistency in String Tension Specifications

[budi]

From the yonex web site, the string tension for :
Ti10 : main - 16-18lbs
cross - 18-20lbs

IsoTiSPSX : main - 16-18lbs
cross - 18-20lbs

And from the Canada Yonex catalog:
Ti10 : main - 20-22lbs
cross - 22-24lbs
IsoTiSPSX : main - 20-22lbs
cross - 22-24lbs

It seems that the string tension specifications in the yonex web site is 4 lbs lighter than the catalog for all racquets. Which source is more accurate ???

[Ricky]

Is it because the difference b/w 2U and 3U ?

[budi]

Nope, esp IsoTiSPSX, it only comes in one weight class (no 2U or 3U)

[PK]

where did you get the Canada Yonex catalog? How can I get one?

[cooler]

there was a debate on whether SP are weaker than non SP rackets. Maybe this difference tell us something. Hmmm. maybe.

[harry]

how come on 'my' canada yonex catalog the recommended string tensions are the same as the yonex website tensions you provided?

[May]

Different Edition?????