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DIY 802 d3 replica with oem B&W drivers
DIY 802 d3 replica with oem B&W drivers
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Old 9th March 2019, 04:38 PM   #1
daliyam is offline daliyam
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Default DIY 802 d3 replica with oem B&W drivers

Hey, as the title says Im working on a B&W 802 d3 replica

I am looking for opinions on build technique and suggestions for visually similar midranges as the d3 midrange is difficult to obtain (possibility of questioning and due to high price)

I have found a supply for the drivers, Diamond drivers aren't sold no questions asked anymore but I had previously obtained two pairs of D2 Diamond woofers. The d3 midranges cost about $550 a piece which rounds up to $1600 a pair with tax+tariffs and shipping to my doorstep. I will use a N802 tweeter as Im not going for a $7000 replica...

So i am looking for something visually similar and have even considered the 600/700 series version of the continuum cone which is less expensive. I consider the price/performance ratio of the 802 (D or N) 6" midrange as a benchmark, It wont look as good or modern, but for $300-340 a piece and performance that seems to match some more expensive Accuton drivers Its hard to ignore. I have seen an Accuton / Thiel&Partner "upgrade" on a B&W 801 which didnt look bad on the midrange enclosure but i cant think of anything else that would fit the look of the d3.

There are maybe two workshops with a CNC in my country that will do a custom project like this for individuals. One of them is a custom furnishing shop, but doesn't offer design services and the other one which does hasn't replied with anything since I left them with CAD files of the original 802 d3 in early january.

It looks like I have to contact the furnishing company with everything planned out, im guessing ill have to learn autocad and design it myself. My CAD files do not have inside dimension or structural properties, and anyways I have volume requriements and port dimensions that will differ from the d3 as i have the D2 woofers...

Regarding the build method,
I had thought about building the bass cabinet slice by slice with cnc from MDF as some have done with D2 replicas. But the turbine head with 3d printing or sandwiched CNC halves from MDF or even solid or laminated wood worked with a lathe.

I think the slice by slice method has significant advantages over bent wood or joining a cabinet from two or more parts, as the cabinet volume can be made more accurate and the bracing is embedded in the structure as a solid "vertebrae" between hollow slices...

What would you guys suggest?
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Old 10th March 2019, 07:30 AM   #2
Lojzek is online now Lojzek  Croatia
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Before jumping on a project like this, get a good total cost estimate of the parts and labour needed for completion. Who knows, perhaps it will be cheaper and better to purchase a used pair of some B&W's?
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Old 10th March 2019, 06:08 PM   #3
daliyam is offline daliyam
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My cost estimate is rather certain on everything other than the CNC cost as the method is unclear right now.
I know the hourly rate but the method dictates the hours...


B&W doesnt have a dealer in my country and there might even not be a single pair higher end b&w speakers of any generation in my country at all...
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Old 12th March 2019, 03:06 PM   #4
Lojzek is online now Lojzek  Croatia
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I don't think you have much choice here other than to approach it with the least amount of problems method. Sliced it is, then. Which country are you coming from, if it's not too personal of a question?
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Old 14th March 2019, 11:31 AM   #5
Lojzek is online now Lojzek  Croatia
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There is one pair of B&W 802D selling at ebay de with a current offer being just over 3,000 and the auction is closing in 3h45'.
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Old 14th March 2019, 11:02 PM   #6
daliyam is offline daliyam
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I dont consider it personal at all, I live in Iceland
Somehow iceland supposedly ranked no. 2 behind Russia in B&o sales before the financial crisis in 2008, but still we have truly only one specialized store for audio today. That store represents some high end brands but in reality it sells and displays mostly low- or mid-fi equipment...

Thanks for the tip on the 802D, but i am really bent on building a speaker myself.
Importing a 3000 eur, 160kg speaker pair would probably amount to 4500-5000 eur with tax and tariffs, so I dont really consider purchasing a fully built speaker online either...
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Old 15th March 2019, 01:02 AM   #7
gabdx is offline gabdx  Canada
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I think you will learn a lot...

Prepare to get at least a hundred XO parts and years of fun trying to figure it out.

Do you have the original 802D XO, that would be a good starting point. however impossible to copy to your replica.

Tweeter too will be a big issue.
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Old 15th March 2019, 02:51 AM   #8
LineSource is offline LineSource  United States
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Quote:
Originally Posted by daliyam View Post
Regarding the build method,
I had thought about building the bass cabinet slice by slice with cnc from MDF as some have done with D2 replicas. But the turbine head with 3d printing or sandwiched CNC halves from MDF or even solid or laminated wood worked with a lathe.

I think the slice by slice method has significant advantages over bent wood or joining a cabinet from two or more parts, as the cabinet volume can be made more accurate and the bracing is embedded in the structure as a solid "vertebrae" between hollow slices...

What would you guys suggest?
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Old 15th March 2019, 06:54 AM   #9
Lojzek is online now Lojzek  Croatia
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If it were me, I'd consider purchasing 2 of the Nautilus HTM2 center channel speakers for the midrange and tweeter drivers, and for the woofers a brand like SB Acoustics.
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