Steve,

Do you think 2 of your 84UFOs bridged might drive the Jordan speakers in the VTL? Published driver efficiency is 88db 1w1m but many folks measure at 85db. I seldom listen over 80db at my seat.

Steve

I did ask you because I built some Caintuck style OB (40cm/65/105) and it doesn't improuve the music compare to bare driver placed on the floor.
In my room I cannot place them 36' away from the walls, they are at best at 2-1/2 feets away. I tried also right in the corner > worse.
So I believe for my room a small OB would be best.
Now they have only 33 hours run.

On the picture they are nearly in the corner

My room is 24 m² > 258 ft² , but I cannot place them 36 fst away from the wall, it is my living and not a dedicated room.

Hockessindkid,

My intention was double when I bought these drivers, first try an OB as I never did before, second was to place them into a Karlson box because I have an excellent experience with those.
For the time being, I am not finish with the OB with a single driver. Let them run a longer period and meddle a bit more.

Thanks Brian for this, I believe Steve will test that baffle with the F15 some day if he didn't already !

Quote:


From the picture you posted showing the speaker distance and room I would say yes.

Steve

It looks like green board drywall.
That is what the brand name shows up as.

OK Steve, I just listened to your hi-res post of the ZF15L and the LP you were playing. Very nice indeed! The F15's are not shouty, and certainly do not sound anemic. I listened with headphones, and my Schiit Audio Gungnir multi-bit DAC, and I am impressed. Can you post some Bella Fleck and the Fleck Tones-Flight of the Cosmic Hippo, or perhaps some rowdy Yello stuff too?
Cheers!
-Randy

Thumbs up Steve! I found myself involuntarily tapping my soles wildly with the sol republic headphones plugged into android.
I asked about dimensions because the platform that the 84ufo would set on is 11 inches deep. The feet of the amp should rest completely ontop at 11"? The DAC(platform) can be seen in the photo with the top of one of the HT pyramid speakers placed on it.
I'm doing some equipment moves in the deticated listening/theater room to see if the zf15m will work. The door on right is opened 90 degrees. This would give the zf15m 30" depth spacing from baffle front to wall. I could get 36" and still access the utility room albeit limited.
15 years ago was the last time I moved any audio in this room. My back is feeling it now!
John

Tooppy,
Your mount of the F15s with drywall is good for breaking in the driver until a proper mount is made. I would not worry. Thin drywall does little for the speaker...no matter what shape. Steve's choice of a thick glued up slab of hardwood was probably no accident. I remember it always was the open baffle speakers mounted on heavy wood slabs that presented the best sound in the worst circumstances(audio shows).
Cheers!

Here is a nice jazz recording with a drum solo at 4:43.  This one I only used my Galaxy 9 phone for the recording because I set the levels too high on the tascam and had to delete it.  Still it communicates the sound I'm getting rather well.



https://decware.wistia.com/medias/vxlky34dzh

Steve

I have this same record and didn't listen to it yet on the F15 because I have no RIIA for the FW F5. I need to switch to the Nait2.

Steve, can you tell why it need to be so thick ? Is it stiffness ? If that to be the case, I would mix different matérials and may be add wood stiffeners.

Quote:


It's primarily mass.  Once you have enough of that, then it becomes about how stiff is the mass and how that mass redistributes energy.

-Steve

I have created a forum for video speaker demos where I will post the next recordings, as once I'm done with the ZF15L I will move on to all the other speakers that we have.  

The new forum is called SPEAKER DEMOS and is located here:  https://www.decware.com/cgi-bin/yabb22/YaBB.pl?board=demos. Tonight I'm going to spin some Steely Dan!

Steve

Something to keep in mind when selecting woods for your baffles, is that the lighter the wood the better the black laser engraved logo will show up.

Steve

8 cabinet screws gently compress the gasket between the cast F15 frame and the baffle.  And a few bolts secure the base.

Ahhhh... nothing like a brand new speaker : )

So when I look at these, I see Randy -- of Caintuck Audio, this is his gift to the audio world... a design that is blessed by the Audio Gods. When you purchase a pair of these -- Caintuck Audio receives a royalty.

This particular pair I will be offering for sale as demos at a reduced price as soon as I have the pictures and videos that I need. This means you won't have to wait 6 months to get a pair and they can be picked up or shipped right away! ; )

Steve's little gift to the impatient!  The price will be $3250 for the pair plus shipping.  That's nearly $500 off a brand new pair.

Thanks Lon!

With all the speaker designs I've explored over the years, the Radial being one of my favorites, these speakers have a very similar way that they flood the room and walls with coherent sound.  You can enjoy the sound anywhere in the space or adjacent space, just like a radial, and if you think about it... since sound comes off both the entire front and entire back, it's like the egg speaker I did, but actually better because when you walk up on it, it doesn't zing you in the eye, the sound is mild up close which gives you great confidence to trust that you are hearing the actual recordings. But unlike the Radials, they have very serious projection which comes across as dynamics, scale and weight.  It's like the best of both worlds, similar to the HR-1 speakers but with more projection and better efficiency.  So this is why I love them so much. I equate them to the radial design as they satisfy many of the same objectives with even less complexity.

You can think of them as a horizontal radial without a box instead of a vertical radial with a box.  Since the room is a cube of some sorts, and sound has no concept of up or down, the end result is much the same between the two.

I've listened to many open baffles over the years and Randys are the first I actually became infatuated with and I'm convinced it's the shape that makes it so special.

Steve

Magnificent work Steve !
So you need mass to make it as a solid non resonant wall.


Archie - Yes, I did notice, that was the reason of my question because when you look at Randy's baffles they seem well centered.

Steve,

Nice footers.  I like how you've beefed up the design/connection.

Those look really nice Randy!

As with Steve's bigger models, simple maple being similar color to the inner cone of the F15 sure does a nice thing.

So many folks use hard maple for platforms, I wonder how it compares to other woods as baffles.

I would love it if you and Steve would compare the sound to other woods you have used the F-15 in.

Steve and Randy,

Between the beautiful woodwork, your willingness to continue to experiment and improve, and your dedication to audio excellence, you guys are absolutely crushing it!

Thanks for doing what you do.

Randy

They sound good to me, and look even better.

Just for fun, I am going to make another recording of the same track, but on the cherry pair which is fully burned-in.  It should be interesting to hear the change.

Steve