The only problem with that design is I don't see much in the way of baffle step compensation. that is, we have a nominally 88dB sensitive woofer and final system sensitivity (assuming the graphs represent 2.83v/1m) is ~ 87dB?.
I can see a trend line from 100Hz up to 1KHz with some sign of baffle step rises, I'd expect to be attenuated.
Edit: Ben's design has a series 2mH inductor and looks like it addresses baffle step appropriately compared to the above design.
Apologies Ben (Wolf). I didn't check this thread... that it is your design and other designs are off topic here.
Thanks, Dave, for the acknowledgement.
I agree, the linked design will lack bass. It was one of the benefits to the smaller cabinet with the higher tuning. I still felt mine lacked a bit of bass emphasis even, but I feel it is the style of driver and not the mfr goal. It is just not a driver that digs low with a lot of slam.
I agree, the linked design will lack bass. It was one of the benefits to the smaller cabinet with the higher tuning. I still felt mine lacked a bit of bass emphasis even, but I feel it is the style of driver and not the mfr goal. It is just not a driver that digs low with a lot of slam.
I try Seas U18RNXP with 1.2" mod delay pair with Seas 27TFFC try to make 8R senn around 85db as picture
I would like you to start your own thread for your design queries and trials, as this thread is for my specific design. We now return the thread topic back to my Drottnar.... Thank you.
Hello Wolf_teeth,
Do you think this design would be suited to TL loading (a la XRK971)?
Thanks,
Pascal
Do you think this design would be suited to TL loading (a la XRK971)?
Thanks,
Pascal
I don't see why not if you keep the external width and driver locations relative to the top edge and sides of the enclosure.
Let us know how it turns out...
Let us know how it turns out...
Great curves! I like the simplicity of the woofer section of the xover 😉
Couple of questions:
If pair this woofer with some of the less expensive SEAS tweeter or any other popular affordable tweeter - can this work too? What possible popular candidates could be for tweeter? Preferably non-metal? 2.5kHz should be in reach for many tweeters.
Tweeter is behind 5.6Ohm resistor, so it has some sensitivity in reserve, right? Can you make quick-and-dirty simulation of 2.5 version of this speaker?
I am not at SEAS league still, so still lurking in such threads
Thank you.
Couple of questions:
If pair this woofer with some of the less expensive SEAS tweeter or any other popular affordable tweeter - can this work too? What possible popular candidates could be for tweeter? Preferably non-metal? 2.5kHz should be in reach for many tweeters.
Tweeter is behind 5.6Ohm resistor, so it has some sensitivity in reserve, right? Can you make quick-and-dirty simulation of 2.5 version of this speaker?
I am not at SEAS league still, so still lurking in such threads
Thank you.
I don't know the aversion to metal domes myself, but these are not hot, bright, or fatiguing. It is one of the best tweeters I've used, and likely very close to best at its price point. There should be no reason to not use a tweeter that is half price of the accompanying woofer. You'd be looking at $390/tower if you built these as 2.5ways and that does not include xovers or wood. The U18 is close to $150 each over here, and you can get a pair of these tweeters for less than the pair of woofers.
This all said- this is an LR2 summation. A lot of tweeters inherently form a 4th order acoustic rolloff when adding a 12dB electrical slope. Not all or just any tweeters can do this. This summation means the 27TAC is taxed further than if it were running at an LR4 slope. Some other tweeters that are fairly robust can also do this, but you'll likely still pay quite a bit for those as well.
I wonder if the tweeter would still be able to have enough output to keep up with a pair of woofers in a 2.5way of this direction, as well as keep its composure and remain low distortion. It's a big if because of what it is already doing.
This Drottnar is a very clean sounding speaker, and I'm not looking to revise or change it myself. Feel free to try something and learn from it, but I'm not interested in vetting a new design.
Best regards,
Wolf
This all said- this is an LR2 summation. A lot of tweeters inherently form a 4th order acoustic rolloff when adding a 12dB electrical slope. Not all or just any tweeters can do this. This summation means the 27TAC is taxed further than if it were running at an LR4 slope. Some other tweeters that are fairly robust can also do this, but you'll likely still pay quite a bit for those as well.
I wonder if the tweeter would still be able to have enough output to keep up with a pair of woofers in a 2.5way of this direction, as well as keep its composure and remain low distortion. It's a big if because of what it is already doing.
This Drottnar is a very clean sounding speaker, and I'm not looking to revise or change it myself. Feel free to try something and learn from it, but I'm not interested in vetting a new design.
Best regards,
Wolf
Pida used budget Scan D2604/832000(2) with slanted baffle https://pkaudio.webnode.cz/u18d2604/
You'd have to rework if not following either original design.
Mike Chua used Morel MDT29 https://ampslab-spk.com/2021/02/15/myna-mdt/