Nice work! The FA22RCZ is a favorite of mine. It has the same chassis as the Troels Gravesen-designed JA-8008 so I replaced the FA22RCZ with that driver and the associated TW034/waveguide tweeter.
The FA22RCZ is a very natural sounding driver with great tone but suffers from inevitable "cone cry" at high levels. The Ja-8008/TW034 is a step up but much harder to integrate and also $$$...
11-opas that is lovely cabinet work. I bet they sound good too. My interest in FR speakers is hot at the moment as I've recently made a pair of 70 L reflex cabs with Hemp FR8 which are terrific. I am curious to know how other 8" FR units sound. I am presently trying out different inductor/resistor combinations to tune the mid/high lift.
What are the dimensions of the small sealed version you built? Looks interesting!
The cone cry only becomes apparent at high levels and only in comparison to the JA8008/TW034 combo. I could happily go back to the FA22RCZ, it's definitely smooth and natural like you say, even when it's stressed. Great driver.
I like the fantastic woodworking skills on display in this thread!
These are indeed great drivers once you tame the shout. mp9, that's an interesting link to the Joseph Crowe project.
The boxes I built were to the specifications recommended by SEAS. This was my first attempt at foam core boxes as a distraction from COVID and was more a proof of concept to see if I liked their sound and perhaps as speakers for my office.
This payed off big time! I'm still listening to them in our family room biamped with TAD 1601s augmenting the bass. I plan to attempt nice cabinets when I pick up a table saw this summer.
These are indeed great drivers once you tame the shout. mp9, that's an interesting link to the Joseph Crowe project.
The boxes I built were to the specifications recommended by SEAS. This was my first attempt at foam core boxes as a distraction from COVID and was more a proof of concept to see if I liked their sound and perhaps as speakers for my office.
This payed off big time! I'm still listening to them in our family room biamped with TAD 1601s augmenting the bass. I plan to attempt nice cabinets when I pick up a table saw this summer.
Much of it caused by the paper fibres in the cone starting to rub together. A thin coat of puzzlekote goes a long ways to dealing with this issue as well as improving DDR.
dave
Hi guys,
Just joined this forum. My name is Raymond, live in the Netherlands. I'm still pretty new to speaker building. First pair where the Cyburgs needles. Next (and currently used) where a set of TABAQ's which I really like.
As I'm completely in love with the Fern & Roby speakers, I stumbled upon this thread.
11opas, I really love your two versions! I'd love to try one of these as well. I hope you can give me some advice on which set I should go for. My livingroom is pretty small (at least probably for American standards
), it's about 25-28m2. As the room is pretty small, I need to be able to place the speakers close to the rear wall.Can you tell me which version you would advice (I don't mind the bigger size of the vented cabinets itself)?
Regards,
Raymond
Hey Raymond, It really depends on how much room you have as far a speaker placement. The bigger version sounds slightly warmer and digs deep, well into the low 30s in room, while the smaller version has a faster and leaner characteristic. It starts to roll off quickly around 50hz. My advice would be if you have the floor space, build the bigger version and just stuff the rear port if the bass becomes over powering in the smaller room... I am very happy with both builds and consider them my favorites in a long line of diy projects over the years... Good luck and please keep us updated with pics..