Years ago, I was inspired by the look of the Focal Grand Utopia speakers. I wanted to make my own and had a plan to build a 3 box, 3 driver version. I soon found out that I couldn’t cover the low end properly with one driver and so the design became 4 boxes. The plan was one box each year and I nearly hit it but finalizing the crossover design took a lot of time. In that time, I noticed an area in the mids that needed some reinforcing, so I added the 8” driver in its own sealed chamber. The 15” driver is powered by its own class D amp which is why I show the crossover with and without it connected. In the last 2 months I made a big push to finalize them and 7 years after I started them, they are finally finished.
How do they sound? Incredible. Unless I’m standing 3 feet in front of one of the speakers they sonically disappear and stereo image up there with the best of them. I finally got them in the listening room and now it’s time for some music and something else…
The pictures were not taken in the listening room I just needed some sun light.
How do they sound? Incredible. Unless I’m standing 3 feet in front of one of the speakers they sonically disappear and stereo image up there with the best of them. I finally got them in the listening room and now it’s time for some music and something else…
The pictures were not taken in the listening room I just needed some sun light.
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Those are beautiful!!! You did a great job on them. The plots show them falling off at around 90hz. Do they go lower than that?
Thanks. Those are near field fr sweeps which doesn’t really show what the bass is doing further away. In the room it goes down to the high 30’s before it drops off.
Mighty impressive there !! So now you can relax, put your favorite tunes on & enjoy...
------------------------------------------------------------------------------------------------------------------Rick...
------------------------------------------------------------------------------------------------------------------Rick...
Hello, I am the legal counsel for Focal, could you please PM me regarding trade dress infringement?
Ha ha just kidding, though feel free to send me money! It looks really amazing! I think I will blow up those picture to show my wife, and scare the hell out of her, so she won't complain about my towers. 😆
could you tell me roughly the ranges each driver covers please I can't quite make it out from the graphs
Very nice, but a question:
Were the near field measuremennts the basis of your developement of the crossover?
Kind regards
Michael
@studiophone
Impressive result.
One question...... What do you use to drive these?
Must be kind of a stable amplifier, considered the impedance reaches down to around 2 ohms at 100 Hz??
Again, congrats with an impressive build 👍
Impressive result.
One question...... What do you use to drive these?
Must be kind of a stable amplifier, considered the impedance reaches down to around 2 ohms at 100 Hz??
Again, congrats with an impressive build 👍