Proac 2.5's-something not quite right- ideas?


Ok Audiogoners I've just recently required a pair of Proac Response 2.5's.
My system is Ayre CX-7,Ayre AX-7-using custom made balanced interconnect (tried Cardas Golden Ref.happy with this)and Vantage Marina Speaker cable(bi-wire)-my old speakers were Proac Studio 150's.
My sound before was excellent-worked with my wide musical tastes,subtle and detailed when required and enough oomph when playing Rock or Electronica.
Typically I though my speakers were the weak link and have always wanted to hear/own 2.5's.

What I am hearing with the 2.5's is a jump in scale of presentation and more air/detail around instruments,on certain recordings it sounds really great on others something is missing,the smoothness and clarity I associate with the Proac sound.
The second problem is the scale of the bass,it may just take adjusting to and whilst it doesn't sound overpowering in terms of the overall recording (vocals/details etc. are still there)it really does seem too much for home listening-more like a gig or club experience.
If I put the 150's back in,the bottom line is they sound more musical overall.

I don't believe it's my room which is large-18 feet wide by some 30 plus feet long-I have 3m high ceiling -whilst speaker placement makes a slight difference (I've been messing about with that)it is not a major influence on the general effects.
I've also tried ceramic tiles on my carpet with the speakers on top-again not a major difference.
Everything in my system has been checked-the speakers are set up per instruction and the replacement effect of the 150's proves nothing is amiss imho.

I have several theories as to what might be wrong-the only previous owner only listened to Jazz and Classical and not at as loud levels as I do-the speakers have not been used in the last two years.
So if run in/break in is a factor (I've only got about 8 hours on them)can I expect the missing resolution to come into focus?
Can I expect the bass driver to change?- since perhaps it has never been fully tested with fast/deep modern bass.
Does my increased listening volume mean more break in was required anyway?

My biggest fear is the scale of the 2.5's is not to my taste and that they are so revealing that I am hearing a grain in some recordings that I didn't hear before.

I've read enough about these speakers to know some how I'm not getting what I should and I instictively know on many of the tracks and CD's I'm playing that I am not getting the enjoyment I was before despite some more space and detail.

Thoughts?
ben_campbell
Neither of you guys think the fact my speakers have been lying cold for two years (the seller obviously checked them before shipping them)has any effect?
Ben, I forgot about that, that could definitely be a contributing factor. As difficult as it is, you might not know until after 2-4 weeks of break in..
No, sitting around has not hurt them.

The response 2.5 is not a flat power or amplitude response speaker and the minimal crossover makes the 2.5 subject to a highly variable playback by not addressing the break up mode of the Carbon Fibre woofer as you have discovered. The harder you push the worse they get. Proacs are very incomplete speakers that require you to be very careful about placement and wall reflections.

It is the reason why so many people have to resort to low powered tube amplification to try to take the power response hump out of the midrange. I would look at the tremendous amount of
information on the DIY 2.5's to fix what is wrong with your 2.5's.

Proac completely under-utilized the potential of these drivers. Carefully picking from the DIY 2.5 info will substantially upgrade your speakers sound and make them more flexible.
I have seen those DIY sites when I was considering building a 2.5 clone and not buying the real thing. It's amazing the areas people saw for possible improvements. Quite a dedicated group of people.
Ben,

I recently acquired a demo Ayre AX-7 to match the existing Ayre CX-7 in our system, replacing a LFD Mistral integrated amp in a dedicated 2-channel audio setup. In addition, I am upgrading speakers from Proac Tablette 50 Signature monitors (one of the best bookshelf speakers I have ever heard...in my opinion, far superior to the 1SCs) to the new Proac Response D15 floorstanding speakers. One thing I have discovered as I have transitioned the AX-7 into my system and demoed the D15s, the Ayre/Proac setup is significantly impacted by interconnects and speaker cable. I would encourage you to call someone at Ayre (Michael is a great resource there...as well as Charles Hansen) and see what they suggest. Your solution might be as simple as switching out interconnects and speaker cable. The Cardas Cross balanced interconnect (running balanced from AX-7 to CX-7) have produced excellent sonic results in my system. I am currently auditioning speaker cable and have been impressed with the results from the Audioquest CV-4 + DBS. In addition, I plan to demo speaker cable from Tara Labs, as well as probably a few more cables in the next few weeks.

Good luck and keep us informed on how you resolve this issue with your system. The 2.5s are marvelous but tend to be finicky to room placement and associated gear/cables.