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Multi-Way Conventional loudspeakers with crossovers

Scan Speak 8531 vs Accuton 173
Scan Speak 8531 vs Accuton 173
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Old 10th April 2015, 02:08 PM   #11
Juhleren is offline Juhleren  Denmark
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Originally Posted by halibutman View Post
Bill - thanks for the info on the Dayton. I'm now leaning towards the C173 which I believe can be crossed as high as about 2-2.5Khz. I don't feel the ribbons should be crossed lower than about 3Khz. So using the $600 pair Accuton C50 to fill such a small gap seems like a very expensive proposition for me. Rethinking.... John
I dunno whether this thread is still live, but for a while I've been planning a design based on accuton's 2" upper mid and too been waiting on their new Cell version - since late 2012... Will be interesting once it finally hits the market!

Using C173 with a ribbon as opposed to deploying a small driver in-between is for me mostly about off-axis (power response) behaviour since the digraph diameter of the small driver will give a far more extended "even spread" than larger diameter of the C173. In return, ribbons true talent lies in the upper region whereas they all do far worse down low which makes it a compromise to fit almost any ribbon with a large-ish hard cone woofer. Softer digraph woofers are generally helped by their decoupling of the dust-cap above about 1kHz, which effectively makes them a small driver in a waveguide. This is not to say that C173 + ribbon cannot be made to sound excellent, but as always, it is about compromises.

BTW, a waveguide will probably help the low end of the ribbon to better integrate with almost any woofer :-)


Last edited by Juhleren; 10th April 2015 at 02:11 PM.
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Old 10th April 2015, 07:36 PM   #12
audiojim is offline audiojim  United Kingdom
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Ive seen those cell drivers from Accuton but I cant quite see what the advantages are.
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Old 10th April 2015, 08:40 PM   #13
Juhleren is offline Juhleren  Denmark
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Originally Posted by audiojim View Post
Ive seen those cell drivers from Accuton but I cant quite see what the advantages are.
Haven't heard them nor seen any distortion specs yet, so I can't comment on their audible performance. Their design however has quite a few promising features (here's a few that came to my mind):

- Ti VC former (higher Qms than the alu VC of C50)
- Copper cap-rings (less inductance)
- Large VC + neu mags (break modes moved to higher frq, less dynamic compression)

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Old 11th August 2015, 05:08 AM   #14
kamonjira is offline kamonjira  Thailand
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Default C51-6-286

Do any one get the information of this new Accuton driver?
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Old 12th August 2017, 04:38 PM   #15
Bill poster is offline Bill poster  Thailand
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Thread bump.
Kind of curious about the C51 too, as it fits my needs for an upper mid. Albiet a v expensive choice (1200hz-3500hz)
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Old 13th August 2017, 09:56 PM   #16
eriksquires is offline eriksquires  United States
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The ScanSpeak 8531/4531 are really great sounding, very warm, and have incredible bass output, but require a lot of cabinet space, especially if ported. Based on Madisound's calculations, about double what the cut cone ceramic C173 would.

One nice thing though is the 4531 adds sensitivity, so you may have an easier time matching it with the next driver up.

Personally, based on speakers I have heard at audio shows, I find the difference between Accutons and SS 4531/8531 pretty striking. I would not really be able to live with an all Accuton system for very long. I would loose interest and find them tiring. Though I have to say I really am fascinated by the tech of the latest ceramic drivers.

I built a pair of monitors with 18W/4531 and have not heard anything from Accuton that would compel me to switch.

My point isn't that Accuton is bad, but that these are two very different sounding drivers to me, so if you really like Accuton, don't settle for SS, and vice versa. I think that you are going to be a fan of one or the other but not both.


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Last edited by eriksquires; 13th August 2017 at 10:23 PM.
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