I'm considering building the Ampslab Osprey-BR coaxial speaker. It uses Eminence Beta 10CX with Selenium D220Ti in a 45 L vented box.
It would be for a single ended tube amp with about 7 watts in a medium room at mostly moderate to low listening levels for jazz to classical to pop.
I haven't had a coaxial speaker before. Anyone heard this setup?
It would be for a single ended tube amp with about 7 watts in a medium room at mostly moderate to low listening levels for jazz to classical to pop.
I haven't had a coaxial speaker before. Anyone heard this setup?
Good to know, if he makes other good designs the odds are he isn't going to throw a bad one in the mix and say it is good.
There were a lot of tempting designs on his site but this is one of 2 high sensitivity ones and is is quite a bit different from anything else I've build so that makes it tempting too.
There were a lot of tempting designs on his site but this is one of 2 high sensitivity ones and is is quite a bit different from anything else I've build so that makes it tempting too.
Hey, a fellow traveler!
I just now ordered the drivers for a pair of Osprey-BR.
I have cabinets ready to go, so my build should go pretty quickly. They're old cabinets from a Klipsch speaker, but they're cut perfectly for a 10" Eminence woofer. They're about 55 liters (2 cu ft), so a bit bigger than what the plans call for, but I can take away volume if I have to. Or maybe just use a shorter port tube to raise the box resonance.
If I get them playing quickly I'll try to remember to post here about them.
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I just now ordered the drivers for a pair of Osprey-BR.
I have cabinets ready to go, so my build should go pretty quickly. They're old cabinets from a Klipsch speaker, but they're cut perfectly for a 10" Eminence woofer. They're about 55 liters (2 cu ft), so a bit bigger than what the plans call for, but I can take away volume if I have to. Or maybe just use a shorter port tube to raise the box resonance.
If I get them playing quickly I'll try to remember to post here about them.
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Please do! Really intrigued about the design.
Sounds like a really good and not overly expensive fun speaker.
Got the plans from ampslab. What a nice guy, reponding in a personal email.
Even made further comments about the designs in the mail.
(asked about the Osprey BR and the Enlightenment cause I like how he used a 1st order LP on the scanspeak illuminator)
I'm sure Michael C. designed the Osprey-BR with the driver flush mounted.
If you mount the driver behind the baffle, you will be changing the design. I don't know if you'd be changing it for the worse by a lot, but I can't see how it would change it for the better.
Usually, rear-mounting the woofer results in a small sort of 'horn' being added, which is likely to change the midrange response of the woofer.
You can try it, but I've found it adds a 'honk' to the sound, and will probably change what you need to do with the crossover.
If you mount the driver behind the baffle, you will be changing the design. I don't know if you'd be changing it for the worse by a lot, but I can't see how it would change it for the better.
Usually, rear-mounting the woofer results in a small sort of 'horn' being added, which is likely to change the midrange response of the woofer.
You can try it, but I've found it adds a 'honk' to the sound, and will probably change what you need to do with the crossover.
BTW, I just received the drivers and crossover parts this past weekend. I have to do some minor work to the cabs; assemble the crossovers, cover over and seal the old tweeter cutouts and cut pieces of thin board to flush mount the woofers. I need to find the time for that. Hopefully very soon.
Osprey-12 (Eminence 12CX with Selenium D220Ti) – AmpsLab
Fresh out of the box, the Osprey exists in yet another 12"-version with the 12CX driver.
Fresh out of the box, the Osprey exists in yet another 12"-version with the 12CX driver.