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Aurum Cantus G2Si Ribbon Tweeter
Hi, I was planning to use these in a summer build project, i see they are out of stock. What are technical specs and how do they compare with the G2? which you have in stock yes?
The biggest difference is that the G2 is an 8 ohm model, not 6 ohms. Complete specifications can be viewed at this link: http://www.parts-express.com/pedocs/specs/276-400-aurum-cantus-g2si-specifications.pdf
Date published: 2015-06-29
Is a transformer needed for this tweeter?
No. standard ribbon 6 Ohm tweeter
Date published: 2015-02-09
Does it need a chamber,if mounted in the woofer box?
No this does not need a chamber, it is a closed back tweeter.
Date published: 2014-06-26
Protection when bi-amping
Bi-amping at 3.5kHz/24 dB with nothing between the amp and tweeter. My friend flicked a bias switch on his tube amp causing a pop; the ribbons were shot. When bi-amping, what do you do for circuit protection? Install a big capacitor which defeats the purpose?
Yeah, that is problematic, I would say ALWAYS put a capacitor in series with a tweeter, your experience being a shining example of why. The standard recommendation for a typical tweeter is a 2nd order high-pass. For more delicate tweeters or tweeters operated too close to their cut-off, then maybe a 3rd-order or higher is required. A woofer will run just fine without protection, maybe a zobel network for impedance correction. But a tweeter must be protected from DC at all costs. There are many factors that go into filter design, it is either a dark art or the per-view of rocket-scientists. But I would look at both your front end and back-end filters and, at the very least, have a capacitor on the back-end of the amp. There is no way around this. I make no guarantees here. It might turn out that you must have a 2nd order on the back end of your amp, at which point you will need to re-design the front end as appropriate.
Date published: 2015-05-05