They are very good drivers. Just don't overdrive them (i.e. don't throw 100W sinus at them). Cheers
fertin 20EX- regulated power supply.
After many moons of searching for the perfect speakers,I decided that I was time to stop looking and start spending.They will be in an open-baffle.The question: Have you had any experience with these drivers? The other question: They must be broken in using a voltage regulator starting a 6.5volt and gradually increasing to 12volt. What co makes quality voltage regulator?
Showing 3 responses by gregm
The power reg you can usually find in a store selling electronic components, etc. If in doubt as to the right unit for the application, ask the people there (it shoudl set you back $~20 or around there). Yes, by tuning, I mean: a) decide on the baffle's smallest dimension (i.e. the width) which determines the low frequency at which you start rolling off (6db/octave). For experiments you can play around with a cardboard baffle to reduce costs -- until you find the best compromise for yr application. Phy and Supravox have OB designs on their sites that you've probably consulted already. Also check out Thorsten Loesh's OB spkrs -- don't have the url handy, but you can locate it easily via google. B) You may want to add a separate woofer (or tweet or both) in which case you'd want to hi-pass the Fertin at some frequency -- which means the choice & design of a xover... BTW, I assume you have consulted Mr Linkwitz's site. OB are lovely spkrs! Cheers! |
What co makes quality voltage regulatorActually many -- in lay terms, what you're looking for is simply a transformer (5-15V usually, Fertin gives you the power rating) to drive the field coils. Any that has normal power supply (not switching) -- i.e. is heavy rather than feather light -- will do. Don't worry about it. I suggest you focus on the baffle design and the sound tuning instead:) The field coil gives you unparalleled flexibility in tuning the drive unit's parametres to match the sound you like... Nice drive units! |