Celestion studio series CX 1512 drivers?



Hey everyone, what do you think of the Celestion studio series CX 1512 drivers? They are for sale here http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=3011620558

What application are they best suited to? Would they be good for midbass/midrange use? Are they quality drivers? Efficient? If anyone has used them before I would like to hear from you!

Thanks!
Adrian


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