Originally Posted by gbullimore
I have limited time at the moment due to travel, but i will update here where i can,
the measurements posted certainly do not look right, i've sent the data to our klippel expert to see if he can shed any light on the driver being faulty, or a set up issue,
As I mentioned the STW is not easy to get a accurate Klippel measurement due to the way Klippel works, it does not actually measure the parameters and graph, it fits polynomial equations and derives the measurements from those curves,
If the set up is not correct, or the driver is not driven correctly, then the curve fitting will be off and the results not valid.
the red flags to me are the Irms at 3A is not nearly enough to get a good curve-fit.
also curious to see the mounting set up, and amp spec.
the KA3 used is not very capable at high power, it has a 15A breaker in the driver feed.
here we use a KA3 for the more sensitive measurements and a high power version of the DA2 for LSI.
we had to build a solid Aluminium table to clamp the drivers as both the klippel stands have too much flex
we will be releasing a full application note very very soon and i was hoping to wait until then to release all the measurements, but as there are some unconfirmed measurements published now, it would be best to publish some of the data.
I'm sure there will be hostile replies, attempts to get 2 manufacturers fighting against each other, all sorts of other forum norms, i have very little time to entertain this, so whilst i'm happy to answer those with genuine interest or feedback, I will not respond to goading, bullying or insults.
I don't mind a good discussion, constructive criticism, negative feedback etc.. just remember behind every keyboard is a real person who deserves to be treated as such.
Are you saying that Warkwyn, the NA distributor for Klippel, does not know how to measure a driver now?
Suddenly, after a third party paid to measure one of these woofers, you now have Klippel data to share?
Could it be that you've been sitting on these because they completely disprove your propaganda?
Your own graphs clearly negate your marketing. Tymphany should be ashamed for providing such information to retailers and the community in general. You've essentially been leading this community on for well over a year now.
You don't even have to extrapolate this to see the motor force is quite reduced even after 15mm of excursion. If you extrapolate that to 45, there's virtually no motor force left. Maybe that's what they meant to say.
45.5mm of excursion with virtually no
loss of motor force.