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Post by Sovereign on Jan 11, 2017 13:50:07 GMT
I've now got the Alpair 12P on my baffles.
I've not changed the crossover, but listening tests have seen me add 2R series resistance to the 12P.
Best sound I've ever had.  I'm trying to get my head around xovers, what is it about the sound that made you think you needed resistance, and what difference did it make? |
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Post by pre65 on Jan 11, 2017 14:04:00 GMT
The crossover I use is a series type originally designed for the baffles Nick Gorham built, with input from James Doddington. Scott, the Audio - Talk speaker guru found some time ago that some full range drivers could benefit from a little series resistance, so I thought I'd give it a try. This time it improved the "tone" a tad.  It's a cheap and easy thing to try. |
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Post by Sovereign on Jan 11, 2017 14:19:00 GMT
Thanks
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Post by Clive on Jan 11, 2017 15:14:38 GMT
The crossover I use is a series type originally designed for the baffles Nick Gorham built, with input from James Doddington. Scott, the Audio - Talk speaker guru found some time ago that some full range drivers could benefit from a little series resistance, so I thought I'd give it a try. This time it improved the "tone" a tad. It's a cheap and easy thing to try. Enjoy the drivers - I'm sure you will, they are very good. Those specific drivers have been "blessed" by both Scott and Mark Fenlon when I had them set up in my listening room. |
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Post by John on Oct 4, 2018 20:38:44 GMT
I thought I update this thread.
Hawthorn Audio have stopped making speakers. I think Darrel is back building furniture.
I have moved to almost Baffles speakers. I use PRV in FAST configuration. The Neo Selenium are in Isobarek configuration.
It not pretty to look at but extremely capable. Had them for a few years now and still love them.
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Post by MartinT on Oct 5, 2018 5:30:52 GMT
Hawthorn Audio have stopped making speakers. That's a surprise, John. Where do open-baffle enthusiasts go now for their drivers? |
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Post by John on Oct 5, 2018 7:29:51 GMT
Still plenty of drivers that are suitable for open baffle speakers I do a bit of research and update at the weekend
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Post by puffin on Nov 3, 2018 19:27:59 GMT
I am currently using EAR Primary Drive ope bakffle speakers, which are an unusual design, but I have grown to like them over the last year. I have some Lampizator open baffles that are gathering dust. I like some of what they do, but not all. They are a bit shouty to me (Saba Green Cone Tweets and Mids) I probably need to play with the crossover settings. Should I persist with these? They use the Eminence 15" bass drivers.
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Post by John on Nov 3, 2018 20:14:40 GMT
The Saba was a bit shouty when I heard them in a friends system
The Emminence is a good bass driver
Not heard the EAR Primary drive
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Post by MartinT on Nov 3, 2018 22:39:42 GMT
I am currently using EAR Primary Drive ope bakffle speakers I've heard them but sadly was unable to evaluate them on account of Tim de Paravicini playing a) solely big band music at b) way too low a volume despite competing sounds from other rooms at the show. I really wanted to hear them properly but couldn't and sadly never saw them again. |
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Post by puffin on Nov 4, 2018 13:54:12 GMT
My pair were said to be prototypes, although they were finished to a "finished" standard when I acquired them. They were faulty in that the bass planar panel was buzzing on one speaker. I only heard them at low volume and suspect that they were never played at what I would call a normal level. When I got them home I found that they were not only buzzing, but that both bass voice coils were rubbing due to the planar panel only being fixed at each corner. Over time this had moved causing the rubbing.
As the original design meant that there were voids L,R,Top,Bott I decided that I would use wedges to re-align the panel and correct the rubbing/buzzing. This took a long time to get right, when I thought I had cured it, and on another day and with different material the buzzing would come back to haunt me.
However, they have been playing well for about the past year. They were originally covered in a velour type material that was wrapped around the front and finished by stapling at the rear. The rear panel is a very heavy deadshete type material. This is removable. The tweeter was fitted over the "grille" so that this was the only driver showing. Removing the covers was a real PITA. They had used industrial strength staples which were almost impossible to remove.
Needless to say they look very home built and not pretty at all. All of the bare skeleton was hidden under a rather luxurious cloak. My dilemma is do I recover them and hope that my fix holds or leave them as they are looking awful, but sounding fine. I have made some makeshift removable grilles that make them look more acceptable, but not ideal.
There is very little info on the net about these. There is a US show report which has a picture of the range and the prices and that is about it. Pricing was a tad optimistic in my view. I am not sure which model I have as there were 2, one slightly smaller than the other. Mine are about 1 Metre high. They are in fact very heavy.
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