Volt 2500.1, ATC 75-150, SS 9900 and Digmoda DDC552. Suggestions?

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Yeah, I see the thread. I must admit, it seems partially like errors from wilmslow and largely like rookie mistakes on his part. There is a lot of signs of complete misunderstanding of procedures and instruments. Bad combo I would say 🙂
I suspect KatieandDad might be a more representative customer for Wilmslow's kits than yourself.

Though this is my first build, I do have an extensive background in audio theory and practice, and that is also the reason I want to do the crossovers stuff myself. The money is not an issue. If this setup works it will be 1/3 of similar specs from manufacturers. And then I could live with having to dampen the cabinets a little more myself 🙂

Effective damping is not something you stick on the walls as an after thought. That is usually largely ineffective damping. If you find the cabinet is too noisy the most viable option is likely to be to change it for one constructed differently. You may need to do this anyway when flush mounting if you have cut holes in the cabinet for the amplifiers. It is probably not a major issue and it may be wise to expect some issues with your first DIY attempt.

I'm not worried about the project being finished at all. They have been super patient and helpful, so I feel safe in that regard.

If they were utterly corrupt people making plans to run off with all your money like those Nigerian 419 scammers how do you think they would behave? Of course they are not but it may be wise to be prudent when faced with the possibility of waiting a few months for a batch of the Volt and/or ATC drivers to be manufactured and then finding you are dealing with a liquidator and not Wilmslow. Whatever, the important thing is that you know that some customers have had issues with Wilmslow in the recent past and the company has been up for sale for a while. As best I can judge, Wilmslow have fixed issues when presented with them which is a good sign they have not become a bad company.[/QUOTE].
 
They will be using the driver data to work out the box size needed like anyone else would. OK they are not using acoustic measurements of the drivers in an actual box calculate the crossovers, nor are they then remeasuring once a prototype crossover is built but then the aren't charging for this service either!
But are Wilmslow still designing crossovers like anybody else would? It is normal these days for DIYers to work with and compensate for the effects of baffle diffraction, to compensate for impedance peaks when needed, to notch out cone breakup when needed,... The posts in the Prestige thread suggest that Wilmslow passive crossovers are pretty basic compared to what would be normal for a DIY speaker these days. I think there can be a significant mismatch between the expectations of some people paying several thousand pounds for a DIY kit from Wilmslow and the sophistication of the crossover and cabinet that is supplied.
 
As best I can judge, Wilmslow have fixed issues when presented with them which is a good sign they have not become a bad company.

Given the latest post in the Prestige thread I have to withdraw this comment. I don't know what is going on at Wilmslow or why they are saying things that are not correct. It may be ignorance at a level that is hard to believe given DIY speakers is their business or it may be something else but whatever it is I would suggest being cautious in dealing with them.
 
Hi Again.

Thanx for the comments everybody. I have decided to put the project on hold. One thing is the comments from you guys, another thing was the ETA of 8 weeks or more, which will be exactly when my wife will be giving birth to our first child. This is already taking quite a lot of my focus, even though I'm not even building the speakers myself.

As some of you have mentioned, they do seem to have a tendency to just mix and match. I was told that the cabinet size and volume would be the same with the ATC mid and B2500.1 speakers, as with the "standard" configuration of scanspeak mid and B250.8 drivers. This seems highly unlikely, that they would just fit the exact same cabinets with no adjustments.

I will not comment on wilmslow quality, as I have decided to let this rest for now, and did not get to the point where I received cabinet drawings. However, from pictures I have seen of their ATC clones, I think they look stunning, and would expect them to sound good. Although it is very clear that they do not fit a lot of bracing or cross-bracing from pictures I have found, and that would be a concern for me.

For now I will settle for my Focal SM9 speakers, which are absolutely stunning, and can definitely do the job on their own 🙂
 
Have you heard the SS9900 ?, it's a little sharp and grating especially louder, you might like the additional bite it has.. might be just the thing for older ears - but i think there are better options, i prefer the SS9500, or Seas in fact ATC used Seas tweeters before their own,
If you are investing in those quality drivers you want to make sure you are optimising their potential as they have some!
 
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