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Probably the best upgrade kits for the legendary Carlsson speakers!

 

The upgrade kits are available for the OA-51 and OA-52 only.

 

 

OA- 51 upgrade kit, consist of drivers and crossover

 

OA- 52 upgrade kit, consist of drivers and crossover

 

Beside the kits, several new tweeks has been developed too.

 

OA- 52 new stands

OA- 52 new basextension

a. Wooden feets

b. Stainless steel feets

OA- 52 new absorption panels

 

 

 

 

 

 

 

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