This is such a broad question I wouldn't know where to begin. Other than suggest that you identify what it is about your existing speakers that you object to, and go out and audition some that don't have these characteristics and sound better to you.
Your NAD 375BEE puts out a very robust 150 wpc and its 4 Ohm rated. That means there are literally hundreds of speakers, new or used, that it can properly drive. Go out and listen to a few. Good luck!
An amp will seldom overpower a speaker. In fact, blown speakers or poor speaker performance is usually the result of underpowering them. More power is always a good thing.
If the sound is not as bright as you would like, then it is the speaker that is not to your liking. Too much power from the amp would have nothing to do with it. But there is probably something else at play here causing the treble to not sound right. Most likely its your room, the furnishings in your room and the placement of the speakers relative to your listening position. I suggest you experiment with all of these factors first before you rush out to get new speakers.
Good answer, paraneer. I'll add that the type of speaker cable you are using will affect sonics. And the impedance of the speaker cable plays a part in the sonics of amp and speaker.
Also, a stranded copper conductor will typically present smoother highs than a solid core speaker cable such as Audioquest. When silver is used as a conductor, it will bring out the higher frequencies.
What speakers cables are you currently using? You may need a cable with a broader bandwidth to get more highs through your speakers.
i guess I'm not that dissatisfied with my any specific characteristics of my present Triangle speakers but figured maybe incorrectly that if I upgrade to better speakers that sound quality would generally improve. So the basic point of this line of inquiry is what speakers do you folks know about that would provide a somewhat noticeable (I know that is subjective) improvement in overall sound quality, particularly in the mid and high range for less than $2,000 (incl. used) for the pair. My listening room is about 12' x 16'
Investigate PSB synchrony’s. Sensitivity is a cinch for the 375BEE as well as there 4 ohms impedance, to add to that power handling is about as ideal. Safe bet they would be a very nice step to you and work excellent. PSB and NAD also happen to have great synergy together if lots of detail and loads of musicality is your thing. I take reviews with a grain of salt, there is no short of positive buzz out there. I have also heard the combination along with plenty of other PSB/NAD partnerships that I will vouch for in confidence. Mids and highs noted, those are just a couple of there strong points.
I thought I might upgrade from my Triangle Altea speakers. I was offered a pair of Canton Ergo 900 DC speakers at a very reasonable price but I won’t be able to listen to them first. They loon attractive. Anyone have opinions about them.Don’t rush into buying speakers without knowing the specs as they relate to your amp.
Canton specifies the Ergo 900 DC’s frequency response as 42Hz to 23kHz (-3dB). Their sensitivity is reportedly 88.3dB at 1m with 1W of input.
The Ergo 900 DC is a solidly built, three-way floorstanding loudspeaker sporting two 8" bass drivers, a single 7" midrange, and a 1" dome tweeter. While the bass drivers are made of polypropylene, the midrange and tweeter drivers are made of a very strong and rigid aluminum-manganese alloy.
The drivers are rather large and the bass spec indicates that they don’t go very low for speakers of this size. I can’t find any info regarding impedance curve. They are 4 ohm and your amp has power, but very risky to buy w/o an audition.
Thanks to all who've responded so far. I sure appreciate the effort.
In an attempt to further specify so as to take full advantage of all this knowledge out here I will add a bit more info.
My general ear preferences tend toward the highs and away from the lows. Part of this is hearing loss and part may be personal choice bit I do find that when an equalizer is available I seem to always turn up the higher frequencies and turn down the lower ones. Bass tones to my ears seem to often overpower.
Also these theoretical new speakers kind of have to go in a fairly limited location. One foot from the end wall and two and a half feet from the sides of a 12 x16 listening room that is open at the away side to a cathedral ceiling.
Thanks again for all your past and future input.
I agree with the KEF LS50 recommendation. I think it would be a great match. By the way, the NAD 375BEE is an excellent integrated amp, but it's generally known a warmer amp and may not have the detailed highs that you are seeking. Another thing to note is that the sound of the 375BEE improves dramatically when you use a set of good interconnects between the pre-out and the power-in rather than leaving the stock metal bars in the signal path. I was stunned at the difference that this made. You could probably get much closer to the sound you want with some good, detailed interconnects.
Last and final question for you audiophiles out there.
I went to a stereo shop and listened to a pair of B&W CM10 speakers and really loved them. But they were beyond my budget. I have found a used pair of B&W Matrix 802 Series 3 speakers for sale that I can afford. Before I drive the 2 1/2 hours to listen to them I was wondering how you folks think they compare to the
CM 10 .
Thanks so much