2. amps-preamps
  3. 1333909767

Need info on amp rec. for these Thiel cs2.4's

Ok, this is my last attempt before I have Crutchfield take the speakers back.

let me say that when things on these speakers sound right it trully is amazing. On most other average CD recordings though the speakers sound tends towards the brighter side. I just recently purchased a NAD M51 DAC and it helped and is a first rate piece of equipent - I have a review on Audiogon if your interested. However, while Im generally happy with the speakers I think either I need to change the amp or get a CJ preamp - ET2 (or similar). Im using the NAD to drive the Amp (a Vincent sp331 - 150 @ 8 ohms and 300 at 4 ohms) directly so no preamp at this time. I hooked up my friends 5082 Adcom for kicks and the treble is good there, but there is no space or dimension to the music. Thus my thoughts on changing the amp. Its flat. He also has a VTL 2.5 preamp that helps by the virtue that it is a tube piece and helps plump up the mids while softening the highs (thus my thoughts of CJ preamp). However sticking a piece of equipment in between the source and amp seems like a backwards step.

Im dedicated to at most $3500 dollars to bring the system in line for the hights. Problem is I have nowhere near me that I can go to listen to the equipment before purchase so its all online for me, so I'd need to be able to puchase it that way. Im not a big fan of used but I could go there if necessary.

Some thoughts on amps:

Channel Islands d200 MKII
Parasound Halo 21

Preamp thoughts:

CJ ET-2
Rogue 99

What my thoughts on what the amp should do is be warm, solid state, not emphsize the highs obviously, balanced or unbalanced, and have at leat near if not more that 300w into 4 ohms. I've heard dampening is important with Thiels but not sure what the numbers mean.

Please any thoughts would be appreciated on my situation here.

My urgency in this is I have till May 17th before I need to tell Crutchfield to take them back.

Now I do really like the speakers and I know many people will tell me to do just that - they are so close to being "there"! But let's use that as a last resort on info here b/c I know I have that option.
last_lemming
mapman's avatar
mapman
22,183 posts
 
"So, if the class-D amp is designed correctly, information-wise you should not be losing any information."

Bombay, my point was that technically no amplifier in practice (as opposed to theory) is perfect, so there is always some information "loss" or perhaps transformation (not completely reversible) would be a better term.

I would agree though that whatever you choose to call this, its no more of a concern with a well designed Class D amplifier than it is with any other amplifier type, so practically no reason for concern (at least in theory).

In the end you gotta trust your ears. Theory and its practical realization in design and construction are two different things.
last_lemming OP
638 posts
 
Well Im glad my ignorance has amused you today!
I certainly don't claim to be an expert at audio design or technology, which you obviously know more about than I do. Thank you for your post, it was very informative. I'll make sure that in my future attempts to gain more knowlege on the subject that my lameness does not attempt rear its ugly head if at all possible ;)
bombaywalla's avatar
bombaywalla
1,958 posts
 
04-17-12: Mapman
...
Bombay, my point was that technically no amplifier in practice (as opposed to theory) is perfect, so there is always some information "loss" or perhaps transformation (not completely reversible) would be a better term.
....
Agree. yes, there's always a transformation of information when we switch mediums: sound pressure to electrical & back again.
I see, that's where you were coming from. I agree.

04-17-12: Last_lemming
....
I'll make sure that in my future attempts to gain more knowlege on the subject that my lameness does not attempt rear its ugly head if at all possible ;)
Sorry, I should have been less sarcastic. No offence meant to you (or anyone else) & I hope that no offence was taken. Don't worry too much about it & don't let that disuade you from asking your questions.
Well, reading up before is always a good idea no matter how much one knows but these forums are meant for learning. I've been laughed at many times in these forums & continue to be. I've also asked newbie questions & written material that I regretted later. All part of the learning....
Glad that you found the post informative.
last_lemming OP
638 posts
 
No offense taken. I try to read up on a subject before I ask a question, but my understanding of electrical design is limited to construction and architecture and reading about electrical component design gets me quite lost in tryin to truly understand it sometimes. Home electronics fascinates me, though my understanding is quite superficial. It's good to hear from people who do understand it and can explain it to common folk like me.
last_lemming OP
638 posts
 
Ive lived with the ciaudio d200 mkii's for about 2 weeks now and probably have about 100+ hours on the units. I've been running them in balanced configuration. So far these amps seem pretty good. Great bass control and plenty of power to drive the Thiels. The sound is very open and full with good imaging. He highs are good with a slight emphasis on acoustical guitar plucking and cymbols with voices being slightly recessed, but not on all albums which leaves me to believe its more the recording than the amps. Not sure yet. In all the amps seem quite neutral.
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