I buy from these guys.... should work great in the UK too 🙂
International shipping & returns - SoundImports
Yes, you are right. SB65WBAC25-4 is quite low sensitive driver. The manufacturer datasheet SPL is only 83.5dB/m. 
If I want to reach some adequate listening levels, I will need 4 per side of them (2 series in parallel), keeping same impedance - like mini line array.
Maybe that isn't bad idea. I will consider it.
If I want to reach some adequate listening levels, I will need 4 per side of them (2 series in parallel), keeping same impedance - like mini line array.
Maybe that isn't bad idea. I will consider it.
I knew about this because I was considering it at one time, unfortunately the 4 driver version makes it suddenly a very expensive project.
Do consider the Faitalpro, 91db sensitivity and much cheaper than 4 SB65...
Oon
Do consider the Faitalpro, 91db sensitivity and much cheaper than 4 SB65...
Oon
Yes, of course.
I had one too, and measured it, but didn't save the result.
Just a remarkable little driver but best suited to desktop (<1m) use IMHO.
Too low in sensitivity, despite 4ohm impedance, I never implemented it in any design.
I have used quite a few Al drivers, several Dayton RS series, but am moving away from them. Their advantage in stiffness is overshadowed by the difficulty in managing breakup. I wind up with narrower pass bands and steeper crossovers. Maybe in a 3 way, they could be better tamed, but in a 6-1 you just wind up with too many issues around the crossover.
Poly does not cut it for me either, so, back to paper for the woofers and mids. I have used Seas, SB and, SS drivers to good effect. I would like to try the CSS woofers. All paper is not created equal of course. Older heavily dopped really limits extension.
Tweeters are another problem. My best effort so far is using the Al/Mg Seas domes, but looking for one step up. Ceramic and Be domes look better on paper, but the ones I have heard are too bright, even when padded down. Maybe more crossover work they could be tamed. Most soft domes have too many breakup issues, but a few have possibilities. AMT's are regaining popularity and have that extended high you may be looking for, but even the Mundof has a few issues, though best of the class. Ribbons have the extension, but distortion too high for me. Now, take this in my preference for very laid back sound, the opposite of most current trends for very bright speakers, mostly by the preference in the Asian markets.
I see quite a shift to the 4 Ohm systems. I understand that from the speaker standpoint, but it can be very difficult for the amp. Not only in requiring more outputs to manage the current, but the risk of instability depending on how the VAS compensation is designed. I go through a lot of effort to keep my system Re above 6 Ohms.
The Dayton RS drivers are quite good for the price. I have not used the RS225, but it has possibilities in a 3 way.
Poly does not cut it for me either, so, back to paper for the woofers and mids. I have used Seas, SB and, SS drivers to good effect. I would like to try the CSS woofers. All paper is not created equal of course. Older heavily dopped really limits extension.
Tweeters are another problem. My best effort so far is using the Al/Mg Seas domes, but looking for one step up. Ceramic and Be domes look better on paper, but the ones I have heard are too bright, even when padded down. Maybe more crossover work they could be tamed. Most soft domes have too many breakup issues, but a few have possibilities. AMT's are regaining popularity and have that extended high you may be looking for, but even the Mundof has a few issues, though best of the class. Ribbons have the extension, but distortion too high for me. Now, take this in my preference for very laid back sound, the opposite of most current trends for very bright speakers, mostly by the preference in the Asian markets.
I see quite a shift to the 4 Ohm systems. I understand that from the speaker standpoint, but it can be very difficult for the amp. Not only in requiring more outputs to manage the current, but the risk of instability depending on how the VAS compensation is designed. I go through a lot of effort to keep my system Re above 6 Ohms.
The Dayton RS drivers are quite good for the price. I have not used the RS225, but it has possibilities in a 3 way.
Just a quick note that I like my Seas H1252-08 drivers. I use them in a 2.5-way configuration, with the top driver running up to around 1kHz and crossing (with a steep slope) to a compression driver.
The results are excellent: clean and neutral sound, and capable of going very loud if called upon.
Chris
The results are excellent: clean and neutral sound, and capable of going very loud if called upon.
Chris
Do you have a large room or a flea amp? Any of the woofers listed would not have a problem keeping up in the average listening room.
What's your limitation as far as woofer size? Is it cabinet width or volume? If it's only volume, try modeling the SEAS L26ROY in a sealed cabinet. It's a beast of a woofer.
What's your limitation as far as woofer size? Is it cabinet width or volume? If it's only volume, try modeling the SEAS L26ROY in a sealed cabinet. It's a beast of a woofer.
Faital PRO are gems, compared to the others fullranges, but I'm still hesitate do I need to add a tweeter for a top end? They are a 3 inchers and their beaming starts around 9kHz. Despite a good reviews I have zero experience with them.
RS125 works great with Seas DXT here
The little Dayton does not break up before around 10kHz... so when crossing around 2kHz... then no problems 😉
The treble is really good and what I find it does a good job is to produce low level treble well as well. May not beat a beryllium tweeter but it is pretty good.
How about a 7" high-excursion Anarchy woofer?
Anarchy 7 inch woofer by Denovo Audio
Test Bench: Exodus Audio W06-017R “Anarchy” | audioXpress
Anarchy 7 inch woofer by Denovo Audio
Test Bench: Exodus Audio W06-017R “Anarchy” | audioXpress
My living room isn't too large. Basically it's open plan kitchen - overall 20sqm. Currently my audio system is something between soundbar and centre channel 2x4"+1", standing beneath the TV. That was a very old project (maybe my first one), but I finished it couple of months ago. BTW it's powerful enough for such a small room. In my opinion I don't need something bigger than 8" or 9"max floorstanding or bookshelf speakers, as my baffle width shouldn't exceed 25cm (450Hz baffle step and crossover frequency)
Attachments
I'm totally agree with you. Placed vertically it sounds way better. The only problem - doesn't fit on the shelf under the TV🙂
I think you should just learn to watch movies without the TV. Just listen to the audio and try and imagine the movie....
Oon
Not exactly. The clever phase alignment from D'Apolitto gives the big advantage of reducing the vertical image which can be a big advantage to reduce ceiling and floor reflections and give a more uniform front to back of room response, but other alignments have, well other effects. The shape of our ears help provide the vertical localization. If a very very pure tone, we , as you have suggested, have none and can't tell where in the entire plane front to back it comes from. Nature does not do pure tones, so as a system, we have full spatial localization thanks to our outer ears and brain.
I run a pair of SB paper 5's with a DTX tweeter for my center. On their side. No baffle step as they sit flush with the monitor on a chest. Anthem ARC says it only needs to fix the small mistake in getting the crossover in phase, which I shall address as I get time. ( Dip @ 2200)
tvrgeek, i have never talked about pure tone (as you claim I suggested something?)
reducing floor and ceiling bounce is well known
but it does not justify placing MTM horizontally
I do not follow what you are saying
you do not agree with me, so you are essentially saying placing d'apolito mtm horizontally is ok? nonsense
reducing floor and ceiling bounce is well known
but it does not justify placing MTM horizontally
I do not follow what you are saying
you do not agree with me, so you are essentially saying placing d'apolito mtm horizontally is ok? nonsense
OK guys. Respect to your knowledge, but I got a feeling like the tread went off topic. Let's discuss my next project "All Aluminium Cone WAW".
Yesterday I made a quick research, looking for another alu-cone fullrange driver, capable to perform very well treble tones without tweeter support. The main problem I faced is the low sensitivity of all of them. The SPL of 84dB is rated as "very good" for that kind of drivers.Taking into account the limited power, I have no other option, but using multiple drivers to get some satisfying listening levels.
Another option is just to go to some proven 3way, but that isn't what I would like to do.
Yesterday I made a quick research, looking for another alu-cone fullrange driver, capable to perform very well treble tones without tweeter support. The main problem I faced is the low sensitivity of all of them. The SPL of 84dB is rated as "very good" for that kind of drivers.Taking into account the limited power, I have no other option, but using multiple drivers to get some satisfying listening levels.
Another option is just to go to some proven 3way, but that isn't what I would like to do.