Thanks for all your responses. Good to see we're well staffed on the evening shift today. I'll try to respond in an organized way, but this post might get a bit complicated. I'll deal with the technical, sub-related ideas first, and then get on to Cno's and Dave's attempts to spend my money.
DocG said:
I think much will depend on where in the spectrum your bass bump is. If it would necessitate a XO around (or above) 100 Hz, you'll have directionality issues that demand a second sub...
Then there is the issue of matching the sub (volume, phase) with the Cremonas. I don't know how well the Dev helps you blend it in (the 110 lacks this feature, as you know).
Maybe you could just EQ the bass peak out with the Dev's DSP - if you know where and how high and wide the peak is, at least. So maybe you could start with some pink noise and a spectrum analyser (if you can lay your hands on one).
I like your thinking. I was thinking of a slightly different and rather low-tech approach to establishing where the bass problem is. Strictly speaking it's not a bump, it's an area where the Dev overdrives the Cremonas' woofers and produces very flappy, farty bass, i.e. it's bass quality as much as quantity, and it's dead easy to hear. I know which pieces of music it affects badly. So instead of getting a spectrum analyser, I thought I'd set the Dev's hi- and lo-pass filters close together (e.g. 10Hz apart) and then gradually move them in sync up through the frequency range until I find where the farty bass notes kick in. Shouldn't take more than an hour or so to identify exactly where the problem is.
DocG said:
And yes, I agree that you should be very reluctant to change the speakers you like for something different but not necessarily better in the long run. A problem I'm far less likely to encounter with my little Missions
.
:
This is indeed the predicament.
oldric_naubhoff said:
sounds like a good idea to me. I really find the feature to set up low and high pass xover point for subwoofer and mains like a thing that should be included on default in every hi-fi amp. way to go Devialet.
having said that I'm sure you'll find that it's not so easy task to find a proper sub for your needs. a subwoofer is not just pumping out bass. hometheatershack.com and avtalk.co.uk and other HT oriented websites provide independent performance measurements (just for the fun of it compare review on WFH with measurements on hometheatershack.com for B&W PV1. you'll be amused). look out for the lowest possible distortion (possibly below 3% down to at least 40Hz @ at least 95dB, this IMO is a standard of competent performance for music replay these days) and short decay time. also I'd be looking at sealed designs as those don't suffer from excessive group delay issues at low frequencies.
Very helpful, Oldric, and duly noted.
CnoEvil said:
IMO. Your final solution should not include a sub, but the right pair of speakers for the job (room)......probably some expensive SFs.
If you need to have the bass filled out while searching, get an inexpensive, but good sub from BK, to tide you over.
Do this once, and do it right......you will know the right speakers when you hear them, so don't get impatient and compromise.
I agree entirely that a sub would be a compromise, and it's not the route I'd rather take, but ... In the first instance I might borrow a sub from my local dealer.
Other comments appreciated and duly noted.
davedotco said:
Very sensible cno, a course of action that I would normally endorse enthusiastically.
There is a problem though, the Cremona Auditor M are, in a way, one of the last of what I would call the 'old style' Sonus Fabers. Modern Fabers, from the Venere to the Olympicas sound different, more explicit and a bit more focussed, in the modern style. Were I in the market for speakers at this level I would probably make my choice between this model and the Luito Tower. Both are no longer in production but I believe there are some new stock still to be found.
There are better Fabers, the Guarnari, Stradivari and Amati models for example, but the prices are on a different level.
I also endorse your suggestion for the BK sup, the XXLS400 is good value. However, if I may be so bold, the AVI sub is reputably quite a beast, thogh not actually that large, slightly smaller than the BK I believe.
I know where you're coming from and I sort of understand the idea that there's and 'old' and 'new' style of SF, but I think the picture's a bit more complicated. The Veneres aren't at all 'explicit'. I have the small 1.5 standmounts and have heard the 2.5 floorstanders. Both models have a distinctly dark and laid-back presentation. Of course one might say the Venere range aren't really proper SFs: made in China and not out of solid wood.
Also, if one were to locate the change in SF style at the point where Franco Serblin left the company, one would have to say that the speakers he made in his sadly very short post-SF period (the Accordo range) were highly 'explicit and focused', even painfully so. And some people have said that the Olympicas are a return to the 'old' style. Some of the old team were rehired to design them. The acid test will be to listen to the Olympica IIs at home alongside the Cremonas.
Although the older big floorstanders do sometimes come up second hand, they're still pretty pricey, as you suggest.
:cheers:
Matt