The trouble I have is that in the UK I can order from EU or from US and now due to Brexit the import costs aren't much different.
A great leveller.
If I were to buy Visaton from my regular source in Germany, I expect the cost would be similar to buying from a UK distributor of SS or Seas.
So really £80 per woofer is about as cheap as either Dayton or Visaton get in the UK.
Seas etc is another step up in price, and for that hike in costs, I'd rather go and buy some Volt 8s
A great leveller.
If I were to buy Visaton from my regular source in Germany, I expect the cost would be similar to buying from a UK distributor of SS or Seas.
So really £80 per woofer is about as cheap as either Dayton or Visaton get in the UK.
Seas etc is another step up in price, and for that hike in costs, I'd rather go and buy some Volt 8s
That is very interesting build. Three 8" drivers sharing 35l volume - that's Incredible!
I found some info across the net, but mostly specs, measurements and nothing about how passive cardioid works.
Where I could find more details how they designed their enclosures?
I'm curious about the physics of cardioid speakers - how does it work? How to design this type of enclosure? May I have some links, please?
For comparison only:
In EU Order the Seas L22RNX/P woofer - SoundImports
In UK Seas L22RNX/P H1252-08 Woofer - Prestige Series Woofer
In USA SEAS, L22RNX/P - Meniscus Audio
If you buy it from EU or USA retailer you'll pay nearly £115 for the same driver.
Little OT, but do you know reliable site where I can see Visaton drivers THD and so on measurements?
Would like to compared them to SB etc.
I have the 20M also, measured response is ok with my two drivers, I can't see or hear any difference. That's what matters to me...🙂
For WAW projects they tend to be at the full range forum. You can target a 3" aluminium cone full range since you don't need bass. Markaudio Alpair 6.2 seems to get a lot of traction the other side. I only have the first generation, apparently it has improved a lot since then....
Oon
Do not be fooled by simulations and F3 numbers. Just because it tunes that low does not mean it pushes enough air to remain low distortion. For 30 Hz to reproduce an upright bass well takes a couple of 12's.* There was an old rule of thumb: the decade rule. In other words, use drivers for only a decade. In the old days when we built monkey coffins, a 12 for 30 to 300, 4 for 300 to 3000, and a tweeter for 3000 up as an example. There is actually wisdom in that rule. Now we try to get a 6 inch to go from 45 to 2K and a 1 inch tweeter to go that low. Nice package, but pushing those darn laws of physics again. Some do pretty well, I think mine included, but far from perfect.
Yes, speaker building is a rabbit hole. 45 years and I am just scratching the surface. I have spent enough on generations of speakers, drivers that did not work out and quite a bit in test equipment where I could have bought some very nice speakers. But it is a hobby. Most commercial speakers are no better and some far worse.
That Visaton looks promising. After dealing with baffle step, looks like it may get up to a small midrange quite well. 800 or so looks do-able.
* Built a sub for my HT recently. 2 12 inch Dayton RS aluminum cones. In room, 30 to 100Hz I can get 98 dB with less than 2% THD. Any louder the low order harmonics skyrocket. It works for a HT as anything that loud is an explosion or something and the distortion does not matter. (They reach over 110 at X-Max in-room)
There are some expensive long excursion subs that can go louder for a big price.
Yes, speaker building is a rabbit hole. 45 years and I am just scratching the surface. I have spent enough on generations of speakers, drivers that did not work out and quite a bit in test equipment where I could have bought some very nice speakers. But it is a hobby. Most commercial speakers are no better and some far worse.
That Visaton looks promising. After dealing with baffle step, looks like it may get up to a small midrange quite well. 800 or so looks do-able.
* Built a sub for my HT recently. 2 12 inch Dayton RS aluminum cones. In room, 30 to 100Hz I can get 98 dB with less than 2% THD. Any louder the low order harmonics skyrocket. It works for a HT as anything that loud is an explosion or something and the distortion does not matter. (They reach over 110 at X-Max in-room)
There are some expensive long excursion subs that can go louder for a big price.
Could you go a little larger? The Scanspeak 26W/4534 looks good, I've a pair, waiting for a project at the moment (2-way with a 10F). They sim very nicely in a ~45 Litre sealed cabinet.
Scanspeak 26W/4534G00 Woofer - Discovery Range