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Super tweeter for FullRange Driver

I have a pair of Audio Nirvana 15in Alinco Classics that I just got done getting into cabinets. After some listening impressions, I've realized I cant live with the high frequency response these things put out by themselves. They only go to about 15k hz. and it's made music lose its sparkle and sense of space and spacial cues. I was thinking of buying a pair of Fostek T90As and pointing them at the ceiling for a more even dispersion and better integration with the Audio Nirvana driver. My main question is what  capacitor volume would you suggest? Where in the frequency response would you crossover to the tweeter? Would wiring the 8ohm tweeter and the 8ohm Audio Nirvana in parallel make me need to change my amp(Audio Note Kit 1 300b Set) from 8ohm to 4ohms? Any other brands of tweeters recommended for a fullrange driver that is around 96bd efficent? Sorry for all the questions, incredibly new to trying to implement crossovers with full rangers. If this sounds like a bad idea. Please speak up. 
akwilson501

Showing 1 response by femoore12

femoore12's avatar
femoore12
683 posts
 
My primary speakers for years in my 2.1 channel system were a pair of Voight Towers with Fostex FE-206 full range drivers. I added a Fostex FT17H Horn super tweeter to the speaker just to see if I could expand the soundstage a little more. I had already added a small Martin Logan sub that worked really well with the FE206s. I followed the Fostex recommendation and only added a 1.0uf capacitor ahead of the FT17H. Much to my surprise, adding the tweeter did make a difference. The best way I can describe the change is the soundstage ceiling (I see it as a sound field bubble - I know that sounds weird) was higher or more expansive in the room. That sound field bubble was larger and made the previous field seem cramped by comparison. 

I no longer use the speakers. My son and his roommates are enjoying them at university now. They aren't focused on quality of the sound, but they love how loud they can play!

Cheers!
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