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Sonus Faber Tribute Speakers

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Project by Barry Crowe posted 453 days ago 2393 views 3 times favorited 8 comments Add to Favorites Watch

These are my tributes to the phenomenal Sonus Faber Cremonia Auditor stand mount speakers. I have been at these for a year now (have to include a cross country move) and the work has been very involved. Because my bandsaw has only 7” of cutting height I had to cut the bullet shape in two sections and then rasp, grind sand and sand some more to achieve this shape. The drivers (I have them) for each cabinet are true to what the factory specs are (they are a 6K pair of speakers) and most of the components for the crossovers too. These are being set aside right now as I am knee deep into getting ready for a run of dining tables that hopefully will allow me the money and time to finish the speakers and put them on a display floor too. These are made from off cuts from three different runs of oak kitchen cabinet doors, that’s why the interiors are a bit rough – I just cannot throw offcuts away ya know!! The next ones will be made from thicker maple that will be conditioned before staining – learned that lesson the hard way!!

-- Supercrowe





8 comments so far

View Hawaiilad's profile

Hawaiilad

1913 posts in 1647 days


#1 posted 453 days ago

Very interesting design..like to see the drawers open

-- Larry in sunny and warm Hawaii,

View Schwieb's profile

Schwieb

1494 posts in 2088 days


#2 posted 453 days ago

Barry, I am confused. I recognize the shape of these speakers and what you are doing, but the 5th picture looks like wood where grill cloth would be. Welcome to Lj’s. I appreciate your dedication to your family and love for woodworking.

-- Dr. Ken, Florida - Durch harte arbeit werden Träume wahr.

View Buckethead's profile

Buckethead

1919 posts in 495 days


#3 posted 453 days ago

Removable protective covers?

-- Bucket, any person that spends 10k on a bicycle is guaranteed to be a $@I almost started to like you. -bhog

View Gibernak's profile

Gibernak

121 posts in 473 days


#4 posted 453 days ago

They look very nice. I’m looking forward to se the end result. I’v made curved speakers a couple of times, but with MDF and vener. It looks like u bent masive wood, how did u do that.

View Barry Crowe's profile

Barry Crowe

63 posts in 456 days


#5 posted 453 days ago

The walnut pieces are where the baffles (speaker mounting board) will sit. On the sixth picture you can see a rebate that will fit a corresponding rebate on one part of the 2 piece baffle (one for each the woofer and tweeter). The walnut baffles will be shaped and profiled with the drivers (speakers) also being inset so the frames are flush with the front of the baffle, so in the end the baffles will be much thinner and shapely, not the block slabs as shown in the pictures. After all that is done, there will be 2 piece black fabric covered grills with friction fit – no hidden magnets planned at this point. These are not my first set of speakers, but these are definitely the first trapezoid ones I have made yet.

-- Supercrowe

View Barry Crowe's profile

Barry Crowe

63 posts in 456 days


#6 posted 453 days ago

I laminated a whole bunch of off cuts from kitchen cabinet door stiles and rails, shaped them in 2 pieces on the bandsaw and then joined them where the two chambers come together. Lots of grinding, rasping and sanding after that.

-- Supercrowe

View RussellAP's profile

RussellAP

2944 posts in 913 days


#7 posted 453 days ago

They look sharp.
So these are just like the actual speakers by Sonus Faber Cremonia Auditor, same woofer and all?
I’d like to know what they recommend for the interior sq ft of the cabinet. All low drivers have a resonance frequency which is ‘tuned’ by the box. Of course the box is usually not oak, they use a much denser wood or composite wood. This means that some low frequencies are likely to ‘boom’ a bit. I’d expect these to put out a spike at 200Hz or so. You can defeat whatever freq in the crossover or you can lead line them. lol.
My experience with speaker making hinges on the woofer I choose. I like to use a sealed cabinet with plenty of room for the cone to move freely, yet air tight enough to keep it under control. When the canons go off on the Telark 1812 overture, you’ll understand. I usually make my cabinets from 5/8 extra fine particle board, and I’ll layer it twice, so 5/8×2. Got tired of all that veneer though.

-- A positive attitude will take you much further than positive thinking ever will.

View Barry Crowe's profile

Barry Crowe

63 posts in 456 days


#8 posted 453 days ago

Yes, I do have the same drivers that are used in the Sonus Faber (SF) speakers – right down to the exact model numbers, at least what other speaker scribes have described in terms of the parts. I bought the drivers from the author of the book, “The Loudspeaker Cookbook” and consultant to the loudspeaker industry. That is Vance Dickason and he supplied the ideal volume to use for the woofer if the cabinet were sealed. Because the SF are a ported design, that info is out the door. Vance will sometimes sell drivers used in his prototyping on eBay when he is done with them. I suppose I can get the actual size of the SF loudspeakers I am copying and work backwards from there, but my version are not absolutely true to the SF in size and volume because the cabinets were limited in size by the amount of off cuts I had. These were more of a trial run to test time required, make some jigs, cauls and baffle templates. I have a stockpile of seasoned maple that I will make the next set from, and they will better approximate the SF Cremonia Auditors. Because I need a certain amount of internal room to tune the cabinet, the crossover assemblies, that are quite big will be outboard. To exactly clone the SF speakers I would need a lab to test and validate, but I don’t have access to that so I am happy with a tribute that is as close to the awesome styling and top notch components as I can get. I have never liked the mdf or particle board and veneer method for speakers for some old school reason I reckon. However, I am willing to use it for furniture and case cabinetry and if you brace and layer enough satisfactory results can be achieved.

-- Supercrowe

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