Peerless 850439 .FRD & .ZMA Files

[thunk303]

Hey all.

Finally made a start learning how to use speaker workshop to design a new crossover for my MTM (850439+XT25TG30-04).

I don't have any measurement equipment at this point so will have to suffice using frequency/impedance/phase data scoured from the net.

That is were I am running into problems. I have the XT25 Files no prob's (they look to have the phase data already combined) and have loaded them into SW.

I found these data sets for the 439 at FRD but cant for the life of me work out what I am supposed to do with the data in its current state?
Do i need to convert or load them using something?? Do I just save them as a text file and rename the extensions? (didn't work)

http://www.rjbaudio.com/Audiofiles/F...HDS-850439.frd
http://www.rjbaudio.com/Audiofiles/F...HDS-850439.zma

Does anybody have the FRD/ZMA files or a link to them for the 850439 woofer. I have used SPLtrace to create them but I keep getting slightly off results (not terrible) and am not sure if they can be trusted?

It seems with SPLtrace that my plot has the right shape and magnitude but the response drops off early at high frequencies as if the graph has been scaled horizontally? Do I need to match the number of plot points I use to the number I select in the options?

Very exciting stuff (read frustrating)

Cheers heaps as always.
Any tips appreciated.

Dean

[thunk303]

I have had slightly more luck with SPLtrace but the plot still falls short in the HF response region?

Hmm, keep clicking I guess

[thunk303]

Ok so i got SPLtracer working well enough and my traces look something like other published plots which is a start.

I will still love some actually measured data for the 850439 if possible. Can anybody point me in the right direction ?

Dean

[thunk303]

It does seem like few people have used, let alone tested and posted results for the 850439. Ill bump this a few times for any late comers.

Cheers all
Dean