Hi Troels Graversen likes wide baffles. Here is a link to his OBL 11 and to an article about the advantages of using a wide baffle I think I will try a wide baffle even if the WAF is way low
Hi MartinAndersen,
TG et al. seem to corroborate my statements.
As everything with audio -it is a matter of taste and which goods and evils we give priority.
If you haven't already done it, my best advice would be to listen to some wide baffle designs to make sure that you know what to expect before commencing your own project 🙂
The 'listening into the recording vs. bringing the recording into the listening room' is a very good metaphor between the controlled vs. wide dispersion approaches, but there are many other aspects that play different roles in our subjective assessments.
cheers,
TG et al. seem to corroborate my statements.
As everything with audio -it is a matter of taste and which goods and evils we give priority.
If you haven't already done it, my best advice would be to listen to some wide baffle designs to make sure that you know what to expect before commencing your own project 🙂
The 'listening into the recording vs. bringing the recording into the listening room' is a very good metaphor between the controlled vs. wide dispersion approaches, but there are many other aspects that play different roles in our subjective assessments.
cheers,
Wide or narrow baffle
It's not going to be easy for me to find a wide baffle OB that I can listen to. In fact I have never heard a OB speaker. I guess that I just want to build one because it's the new black (-:
It's not going to be easy for me to find a wide baffle OB that I can listen to. In fact I have never heard a OB speaker. I guess that I just want to build one because it's the new black (-:
When I look at the OB photos I get enthusiasm, probably also because it has advantages in building as well as sound, and costs. For years I tried closed and ported enclosures with awesome drivers, and listened to many top sets. There was always the problem with bass. This year I finally built my first OB, after tweaking the 6db passive xo, I am now really happy with it. One big woofer and a small fullranger from 500hz till "20khz" and No more box-sound 🙂 but music...
(I'll power my amp in a minute, to have a listen later, 🙂
I am still tweaking, also with the baffle width, indeed because of the right mix between "body" and 3d imaging, and so, like Juhleren mentioned.
I also prefer both, which is probably hard to achieve. And I may perhaps try a supertweeter, ribbon or AMT.
And maybe even the Beyma TPL in stead of the 4" fullranger.
Martin, if you want to build it yourself, I am sure you will get a LOT of fun with the OB concept. But as with all speakers, the xo makes or brakes it.
(I'll power my amp in a minute, to have a listen later, 🙂
I am still tweaking, also with the baffle width, indeed because of the right mix between "body" and 3d imaging, and so, like Juhleren mentioned.
I also prefer both, which is probably hard to achieve. And I may perhaps try a supertweeter, ribbon or AMT.
And maybe even the Beyma TPL in stead of the 4" fullranger.
Martin, if you want to build it yourself, I am sure you will get a LOT of fun with the OB concept. But as with all speakers, the xo makes or brakes it.
My Experience with Hawthorne Audio
What a completely miserable experience!
After reading everything about this apparently superb driver Hawthorne Audio - 700 Hz. AMT drivers I was all set to bi-amp it with my sealed GPA Altec 416 midwoofers. I emailed a series of questions that would have finally helped me build my first audiophile system-after more than three years of research.
Instead, I got a reply today from them saying that sales of the Model 700 are suspended. "Cheers", he said!! Can you believe that?
Of course, it's remotely possible that they found a design error and/or performance flaw and pulled the Model 700 off the market for that reason.
Otherwise, words can't express my contempt for this way of doing business; treating the DIY community as if we were no better than opportunistic pirates.
They sure did a great job at vaporizing some very beautiful plans.
What a completely miserable experience!
After reading everything about this apparently superb driver Hawthorne Audio - 700 Hz. AMT drivers I was all set to bi-amp it with my sealed GPA Altec 416 midwoofers. I emailed a series of questions that would have finally helped me build my first audiophile system-after more than three years of research.
Instead, I got a reply today from them saying that sales of the Model 700 are suspended. "Cheers", he said!! Can you believe that?
Of course, it's remotely possible that they found a design error and/or performance flaw and pulled the Model 700 off the market for that reason.
Otherwise, words can't express my contempt for this way of doing business; treating the DIY community as if we were no better than opportunistic pirates.
They sure did a great job at vaporizing some very beautiful plans.
Hmm. Suspended. That sucks!
Maybe not a 1:1 replacement but sure a lot cheaper:
Dayton Audio AMTPRO-4 Air Motion Transformer Tweeter 4 Ohm
What do you think?
Maybe not a 1:1 replacement but sure a lot cheaper:
Dayton Audio AMTPRO-4 Air Motion Transformer Tweeter 4 Ohm
What do you think?
As explained, my plan was to bi-amp my sealed Altec 416s with the Hawthorne's because they claimed the low end was even usable below 700Hz. The only available AMT I'm aware of that claims to get even to just 700Hz is the Beyma TPL150/h http://www.beyma.com/getpdf.php?pid=TPL-150/H But if you look at that FR curve, it doesn't come close to that!
In my case it may be no issue, since I built Gary Dahl's Altecs to spec, and he uses his at 700Hz (and down to 70Hz, were the box cuts the low end off, as planned).
The big problem may be crossing the Beyma TPL150/h with the 416s. I would be bi-amping, so that may greatly simplify things. Lynn Olson said on that page that properly crossing the 416s with the TPL150 is a tall order, and not something he'd volunteer to help with! http://www.diyaudio.com/forums/multi-way/100392-beyond-ariel-1255.html
But the TPL150 is only rated down to 1kHz. I did reply to Lynn to ask if the TPL150/h would make things a lot easier. I certainly hope it will, but not with my luck! In which case, I'll go full speed ahead with adding an Azurahorn AH-425 + Radian 745NeoBe to the Altecs, exactly like Gary did. I think Gary had to add a notch filter due to a resonant peak in the Radian after 10kHz. Beyond that, I think the build should go smoothly, especially because I'd be bi-amping.
The only other thing is that the Radian745NeoBe's HF range drops off above 10kHz. At first, Gary added a RAAL Lazy ribbon, but eventually dropped it and got the higher end he wanted with EQ. I was surprised that was possible-or even desirable from a sound quality standpoint. I will certainly ask him how he did this!
Since I don't know the speakers that you are making I am probably not that helpful but here it comes anyway 🙂
The AMTPRO-4 is lower in sensitivity than the Beyma TPLs, but since you are going active that shouldn't be a problem, no?
Check out this measurement. It seem like it gives comparable low end extension to the Beyma with waveguide -except it does so without waveguide:
Dayton Audio AMTPRO-4 Air Motion Transformer Tweeter 4 Ohm
The Beyma TPLs seem to come with some kind of rear chamber. If this can be removed, you should be able to get more low end from them (and probably better sound too...)
The AMTPRO-4 is lower in sensitivity than the Beyma TPLs, but since you are going active that shouldn't be a problem, no?
Check out this measurement. It seem like it gives comparable low end extension to the Beyma with waveguide -except it does so without waveguide:
Dayton Audio AMTPRO-4 Air Motion Transformer Tweeter 4 Ohm
The Beyma TPLs seem to come with some kind of rear chamber. If this can be removed, you should be able to get more low end from them (and probably better sound too...)
- Status
- Not open for further replies.