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-   -   Audio nivarna Super8 (http://www.diyaudio.com/forums/full-range/228830-audio-nivarna-super8.html)

mikenoble 28th January 2013 01:00 PM

Audio nivarna Super8
 
I am thinking of using the Audio Nivarna super8 (std magnet) in aVoight pipe or Frugal horn type of enclosure. I see from the specs that both the stamped or cast frame models have impedance rising to around 150 ohms in the 40-50Hz area.
Can anyone advise me if this would be a problem ?
Thanks
Mike

kevner1954 31st January 2013 10:44 AM

I had a pair of VOIGHT PIPES with the 6.5 common sense (audio nirvana) drivers and they were starting to sound very good until my house burnt down and they were lost to that. as far as 8's for them or the frugal horn would be a tough thing to enlarge the cabinet properly. I have 2 sets of 2.8 cabinets with 2 ,3 inch ports that work very well with 8 and 10 inch drivers, that common sense recommends with these drivers. i'm building the frugalhorns with the fostex fe126, to see if these small drivers truely sound better in this cabinet(frugalhorn). I have done the first step in EnABLing the audio nirvanas (Modpodge painting) with a better sound coming from them than I thought possible. Thats my take on the audio nirvana's

Scottmoose 31st January 2013 11:22 AM

Voigt. No 'h.' Named for P. G. A. H. Voigt.

There aren't any FH designs for the Audio Nirvana drivers. You'll need some help from a high output impedance amplifier or Eq in any event since as-is, with a mass-corner of nearly 400Hz according to the published data, they're not ideal for use in back-loads without support. Assuming this is the case, a Voigt pipe (tapped conical horn) designed for them would probably work as well as anything.

Re the impedance, with certain exceptions that we don't need to go into here, the impedance of all drive units rises at resonance.

GM 31st January 2013 02:55 PM

FWIW, FreddyI's measurement of two a few years ago had even lower Qts than spec'd, a rare occurrence regardless of manufacturer, though higher Fs, but once loosened up calculates to very close to spec. A pity that not all of their driver line is proven to be as good.

GM

hm 31st January 2013 04:37 PM

mikenoble
 
Hello,
whats up with the double horn technic,
to reduce the Imp below 50 Hz to 4 ohm flat,
and bass down 35 Hz.
May be my solutions would be the best way to drive
such driver with single tube amps.
look Saxophon, RDH20, Posaune XL on my HP
the double horn is smaller as a single driver solution.

Scottmoose 31st January 2013 05:26 PM

Quote:

Originally Posted by GM (Post 3350129)
FWIW, FreddyI's measurement of two a few years ago had even lower Qts than spec'd, a rare occurrence regardless of manufacturer, though higher Fs, but once loosened up calculates to very close to spec. A pity that not all of their driver line is proven to be as good.

Interesting! Good to know; that's very rare for a lower Qt. Yeah, shame some of the others haven't measured up as it were.

col 31st January 2013 11:55 PM

I had a play around with a pair of Super 8"s I picked up off ebay a while back. There is a few pictures here:

Audio Nirvana Super 8"

They are a good entry level fullrange driver for the price but the mids are hard to tame.

GM 1st February 2013 12:38 AM

Nice cabs! What's causing the big 600 Hz peak?

GM

col 1st February 2013 12:48 AM

Quote:

Originally Posted by GM (Post 3350969)
Nice cabs! What's causing the big 600 Hz peak?

GM

Not sure, I tried a Hemp Acoustics FR8c in the same box and retuned the ports and it sounded much better. At that point I gave up on the super8s.

mikenoble 1st February 2013 09:31 AM

audio nivarna super 8
 
Thanks to all for replies.
Regards Mike


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