Shahinian Obelisk Passive Radiator Replacement


I just bought a pair of good condition Shahinian Obelisk speakers at a garage sale for $5 :-). Unfortunately, both 10" passive radiators had been completely removed and are gone. Shahinian Acoustics wants $275 for a replacement pair. Parts Express has replacements for $60 (http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=295-494). There are also used pulls from good speakers on ebay for $25+ dollars.

My question is are passive radiators that sonically critical and precisely matched that I have to buy the $275 pair from Shahinian or could I get by with one of my other choices without muddling up the speakers? And if so which ones? Or are there other choices or vendors I should consider for the replacement? Thanks for the advice!!
zymaze

Showing 2 responses by rodman99999

Apparently you didn't read my previous post. That junk on eBay(it IS a PR, not just parts or a "cap") WILL NOT perform properly with your system(or anyone else's, unless they just get REALLY lucky). Bite the bullet and buy the passive radiator that was designed for your system!
Mr Z: The size and weight of a passive radiator is determined through a formula based on the Theil/Small parameters of the woofer and the volume of the enclosure. There are other factors involved, but basically the radiator takes the place of the mass of air in the tuned port of a vented box. It's clitical to get the correct ones for the design, IF you want the designer's intended bass response.