I suspect that the surround is engineered to be robust enough, the cone assembly shallow enough, and the coil gap wide enough that they risk of rubbing is minimal, but others will be able to speak on all that with more authority than I.
I asked because the Jordan JX53, which was also spiderless, was known to have a problem with voice coil rubbing. I don’t know how common it was.
I've not heard of any issues with the 5.3, or the 5.2 which was identical apart from coil material (copper for 5.3, CCAW for the 5.2). Or the 11MS or 7MS for that matter (also spiderless). No doubt there will have been some failures; I've yet to see a driver that had a 100% field success ratio, but AFAIK, there are no coil issues with these units.
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Good to hear.
I’ve become interested in the the 2” Markaudio drivers since I read up on the Tozzi One kit & the Tozzi Two production model.
What’s your opinion of the waveguide front surface of the One & Two? Hype? Genuine function?
I’ve become interested in the the 2” Markaudio drivers since I read up on the Tozzi One kit & the Tozzi Two production model.
What’s your opinion of the waveguide front surface of the One & Two? Hype? Genuine function?
They're actually classed as 3in under contemporary industry convention, same as all other drivers with approximately that Sd.
Re the baffle, I don't have an opinion, I can state fact, because I saw the development measurements. It makes a small difference relative to a flat baffle, as you would expect, with a slight reduction in diffraction effects. All baffle profiles have an effect on the response; it's just a question of degree. Vast, no, but a functional effect, yes.
Re the baffle, I don't have an opinion, I can state fact, because I saw the development measurements. It makes a small difference relative to a flat baffle, as you would expect, with a slight reduction in diffraction effects. All baffle profiles have an effect on the response; it's just a question of degree. Vast, no, but a functional effect, yes.
I wish drivers were classified according to actual cone diameter, not frame diameter.
Regarding the baffle of the Tozzi One & Two, I wonder how much of its design was about a specific industrial design “look.”
Regarding the baffle of the Tozzi One & Two, I wonder how much of its design was about a specific industrial design “look.”
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I wish Covid-19 hadn't happened, but wishing doesn't make it so. 😉 All we can do is work with the general conventions -believe me, you aren't going to change them, whether you like it or not. Incidentally, it's not based on basket diameter either since the Alpair 5 basket diameter is actually 4in. The relatively arbitrary approximate values drivers are commonly classed on these days are derived from Sd, and run thus, give or take: a 3in unit is usually considered to have an Sd of approximately 28cm^2, a 3 1/2in around 36cm^2, a 4in about 50cm^2, a 4 1/2in c. 65cm^2, 5in about 85cm^2, 6in around 120cm^2, 6 1/2in c. 140cm^2, a 7in about 180cm^2, an 8in around 220cm^2 and so on.
Re the baffle, as noted above the waveguide has a small effect on the response, which was desired with the centred driver in that baffle form-factor, slightly reducing some diffraction effects. Not major, but it was wanted. I didn't design the Tozzis, but I was there, and saw both the design and engineering data, so I am in a position to give you that as a factual answer. It gave it a distinctive appearance too, which was nice, but not why it was employed. The concentric rings were a little more so, although they also had an acoustic effect, albeit a minor one.
Re the baffle, as noted above the waveguide has a small effect on the response, which was desired with the centred driver in that baffle form-factor, slightly reducing some diffraction effects. Not major, but it was wanted. I didn't design the Tozzis, but I was there, and saw both the design and engineering data, so I am in a position to give you that as a factual answer. It gave it a distinctive appearance too, which was nice, but not why it was employed. The concentric rings were a little more so, although they also had an acoustic effect, albeit a minor one.
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As of now, I intend to purchase the Tozzi One kit. I appreciate your information on the design, very interesting.
I am concerned that my cat will tear up the faux leather covering, a feature I rather like. It’s something to consider for a future build. I can’t paint well, and textured paint from a spray can only do so much. My first build resembled a pair of small monoliths covered in spray-on textured paint, each sporting an FF85K.
I am concerned that my cat will tear up the faux leather covering, a feature I rather like. It’s something to consider for a future build. I can’t paint well, and textured paint from a spray can only do so much. My first build resembled a pair of small monoliths covered in spray-on textured paint, each sporting an FF85K.
The Alpair 5.3 is a stunning little driver, I purchased a backup pair after a fair bit of listening to the first set.
I believe the MarkAudio drivers’ model numbers refer to the cone diameter in cm - Alpair 5.3 cone diameter is 5cm (version 3), Alpair 7 is 7cm, Alpair 10 is 10cm etc.
Cheers,
Matt.
I believe the MarkAudio drivers’ model numbers refer to the cone diameter in cm - Alpair 5.3 cone diameter is 5cm (version 3), Alpair 7 is 7cm, Alpair 10 is 10cm etc.
Cheers,
Matt.
Yes, that's the basis for their naming convention, usually assuming about 1/2 the surround inclusion off the top of my head (which is suffering a little this morning from an accidental excess of Bushmills last night so apologies if I make any howlers 
).
The little Tozzi One kit is pretty good value, and surprisingly capable; I remember the production model MA-S sold going down well at shows -a lot of attendees hadn't heard a small wideband of this type before and they often ended up getting about 40% of the play time over the weekend. Enjoy. 🙂
).The little Tozzi One kit is pretty good value, and surprisingly capable; I remember the production model MA-S sold going down well at shows -a lot of attendees hadn't heard a small wideband of this type before and they often ended up getting about 40% of the play time over the weekend. Enjoy. 🙂