For you folks that want to see how the other half lives, here’s a VERY impressive new driver from Dayton that would be super simple to design your first two way system!
https://www.parts-express.com/Dayto...ure-Series-Woofer-80W-Driver-4-Ohm?quantity=1
Notice the efficiency……even with baffle loss we’re still right around 90db…..easy to drive
And the 30 degrees of axis response?……are you kidding me……ruler flat to 3khz
https://www.parts-express.com/Dayto...ure-Series-Woofer-80W-Driver-4-Ohm?quantity=1
Notice the efficiency……even with baffle loss we’re still right around 90db…..easy to drive
And the 30 degrees of axis response?……are you kidding me……ruler flat to 3khz
I just hope there haven't been 'running changes' to the design around the surround / cone junction & that of the VC coupling, some suggestions of which have been reported elsewhere on the 8in model. Assuming not, shouldn't be too difficult to integrate depending on crossover frequency / partnering tweeter, diffraction characteristics etc.
Yeah, with a ~3443 Hz VC limit = ~ 2400 Hz max XO based on polar matching, a small tweeter will meet the max 1 WL spacing ROT.
With a compact 2 way for a beginners venture, given the off axis plots I’d run it without a low pass and no toe in. Unless your room is properly treated, power response focus isn‘t a priority design parameter IMO. Most folks IME that don’t bother to treat their space also have significant placement restrictions as well.
Those wanting to try their hand at XO design will get an opportunity to voice the system with small incremental changes to a tweeter HP with relative ease
Those wanting to try their hand at XO design will get an opportunity to voice the system with small incremental changes to a tweeter HP with relative ease
Hmm. Might work. Based on the current data it's a fairly easy driver to work with, but with diffraction, step-loss you're likely to be down in the LF with it run wide open, so system tweaking via level padding on the HF leg may be tricky. For e.g., here's a very quick / rough model, 14in x 8in HxW baffle, 3/4in roundover / chamfer applied, vented enclosure 16 litres tuned to 40Hz; box response hard-spliced in at 300Hz & a nominal voltage source amplifier. I've stuffed it into PCD just for the purposes of displaying the response. Might work, but you'd need it up against a front wall, or preferably placed on a suitable shelf with sufficient hard-packing around it to effectively bring the baffle flush to avoid the drop off < ~570Hz or so.
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That plot is one of the reasons I want to play with the driver. While certainly different in many ways, the breakup looks reminiscent of the a26re4 but with better extension in a smaller, in this case ported box.
Looks very nice. I would go for 8 ohm to make it more amp friendly.
Not dissimilar in the sense it has a relatively smooth HF rolloff -at least for the initial octave. Quite impressive for an alloy cone designed for a limited operating BW. With my multiway designer hat on though, leaving aside step-loss, diffraction etc., you might be able to run it sans filters like a Seas A26 or the units it (the Seas) recreates, but I'd be a little concerned about the potential for breakup induced HD to become audible in the passband -without an HD plot with level (hope Yevgeney gets some) we don't know for sure. OK, that's arguably not what was meant above -assuming 'it is what is published' you've the option of hyper-simple or more complicated if desired & you want to get the most performance out of it.
Sans that data, then in multiway-designer 'critique' mode, there appears to be a touch of energy storage at about 425Hz (which may be a measurement artefact) & a little at about 2.6KHz, give or take. From the general curve shape, it's well behaved, though I might keep an eye out for a bit of inductance modulation. The fact that I'm writing that at all for a driver advertised at less than $50 says a fair amount though, since you normally would be in 'expectation management mode' for a 6in driver at this price point.
Sans that data, then in multiway-designer 'critique' mode, there appears to be a touch of energy storage at about 425Hz (which may be a measurement artefact) & a little at about 2.6KHz, give or take. From the general curve shape, it's well behaved, though I might keep an eye out for a bit of inductance modulation. The fact that I'm writing that at all for a driver advertised at less than $50 says a fair amount though, since you normally would be in 'expectation management mode' for a 6in driver at this price point.
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Lol…..”expectation management mode”…..I LOVE that!!!
I ordered 4 for myself for a 2.5 way tower……one inductor for the .5 woofer. We’re outside the realm of fullrange systems here so I apologize.……I’m just of the opinion that a lot of folks land here first in DIY as they’re afraid of crossover design. A woofer like this makes the learning curve much easier to navigate.
I’d suggest a ribbon or AMT tweeter for the flat line impedance…..again making high pass filter design pretty much textbook.
I ordered 4 for myself for a 2.5 way tower……one inductor for the .5 woofer. We’re outside the realm of fullrange systems here so I apologize.……I’m just of the opinion that a lot of folks land here first in DIY as they’re afraid of crossover design. A woofer like this makes the learning curve much easier to navigate.
I’d suggest a ribbon or AMT tweeter for the flat line impedance…..again making high pass filter design pretty much textbook.