Break-in period now greater than 200 hours. Seriously; every speaker design person on the planet should try the Pluvia 7PHD at least ONCE! I am getting bass below 40 Hz but it sounds very real even though my alignment is way less than ideal. No bass boost required once above about 10 to 15 Watts; room gain of course plays a HUGE role here. Bass, mid-bass, low-mids, upper-mids...it's ALL here; just need a sub-woofer and super-tweeter. Do NOT pass these up! Retired Engineer and Musician; these guys are for VERY real!!!
As you know, we have a disease for never ending truth in fidelity at every price point!
I have a modest preference for "bookshelf" (benchtop?) designs because, to accommodate the previous dCHR-Kens, I bought a really wide TV cabinet. So I have rather a lot of room on which to put speakers - on the order of 50cm either side of the TV.
On the other hand, as I find myself unexpectedly single, WAF is a non-issue right now and I'm sure I can find a way to accomodate a pair of floorstanding speakers just fine....maybe I can even position them optimally
Much like the EL70 and Pluvia 7. I still remeber the tremendous bass as the 1st EL70 Compact Floorstanders played well into the evening on the back deck (no room gain) playing The Wall.
dave
The CHRs, A7/7.3 are optimum in the 9 litre deciSize boxes, but some of the newer drivers are pushing back to or towards the primeSize (13 litre) boxes. I may need to do an 11 litre one as well. And as in the past, the drivers that are optimum in a larger box can (usually) be put into the smaller ones.
As i move out of doing hardware i will be doing more design & drawing work both for the miniOnkens and the Woden boxes. And a greater selection of WAW designs.
If there is something specific needed by you email me directly and i can push it to the top.
The new Pluvias, and Alpair monoSuspensions have considerably lengthen the queue.
dave
Just trying to settle on a system design at the moment, but I'll definitely be in touch at some stage soon.
So, playing with a box calculator for some VERY rough numbers, it looks to me like a 13L A11MS box gets nearly the same extension (give or take 2Hz) as the old dCHR-Ken70's but about 3dB more efficiently and about 6dB louder within safe margins.
With a 4th order butterworth HP at 60Hz it's still power-limited to that same SPL, but it can peak up to 13dB louder while remaining within Xmax.
One spanner in the works is the space I have intended for a centre channel - it only permits an enclosure up to 175mm high, which makes it physically difficult to fit an A11 MS (158mm diameter at the faceplate and 144mm at the basket) without compromising on material thickness and relief around the driver.
Options that I see for dealing with that:
1) Skip the centre speaker. I've been happy with this arrangement until now, and it does save several hundred dollars...
2) Slim down to 12mm ply knowing it will never see that much bass content anyway
3) Use a 70mm driver...but that limits system volume in HT applications because most content ends up on the centre
4) Ignore the centre-channel hole in my TV cabinet and put it somewhere else
5) Build an enclosure where a larger cross-section protrudes forward of the cabinet - this sounds like a pain to build but I kinda like the idea
The modeling i did puts it into 9 litres for an optimal Mar-Ken, but the alignment does tend towards smaller boxes.
With a standard vent i expect it might have to be a bit bigger and tuned lower but could have the typical issues with tuning moving around wiht the dynamic changes in T/S.
dave
dave
With a standard vent i expect it might have to be a bit bigger and tuned lower but could have the typical issues with tuning moving around wiht the dynamic changes in T/S.
dave
dave
Hmm....quick fiddle shows that does change things quite a bit for running full-range, but only really changes the response with a 60Hz HP by around...maybe 2dB, which seems fine.
(I'm still keen to push the crossover frequency down from 80Hz to 60Hz because, frankly, my current subwoofer is garbage. I'd like to keep its mush as far down as is practical)
Still, it'd be nice to have them play with some authority when full-range, so perhaps I should be looking at the bigger boxen.
Last edited:
Remeber that sims will not show the affect of the high R vents used in the alignment knocking down the little peak shown in the sim and extending and smoothing the knee, F6 & F10 are fairly accurate. F3 is a meanless number to humans but necessary for filters.
Down here room dominates thou.
dave
Down here room dominates thou.
dave
Pensil, FHXL, SeaStack, Brodgar where the box dominates. It should be noted that in a BR the A11ms has less potential bass than the smaller A7ms. Without the load provided by a horn or TL i would not try to puxh them too low. Upper bass (where the bas people typically consider as bass).
dave
What's the best way to contact you, Dave? I dropped you an email through your site a couple of days ago but I'm not sure if that's an email address you're still using
Mk2 Pluvia11 side surrounds
With spare time on my hands due to the current lockdown situation, I’ve started making a Mk2 model of my Pluvia11 side surrounds.
With spare time on my hands due to the current lockdown situation, I’ve started making a Mk2 model of my Pluvia11 side surrounds.
Attachments
