Dazed & Confused


Listening to mostly jazz, solo instruments and vocals I find my Martin Logan Spire hybrids to sound awesome, but recently I was listening to some both "Busy" 90’s rock and classical (lots of instruments playing loudly together) and I find the music starts to sound garbled and annoying (to bright), so much so, I turn it off.
I was wondering if you all might have some suggestions on some speakers that would be a little more forgiving with busy/loud music that I could possibly switch over to when listening to different types of music. That is unless I can find speakers that can handle all styles of music, then I would consider taking the hit ($$$) on selling the Spires.

Without getting into room size and dynamics, lets just call it a standard room, I was also looking for something more efficient. The Spires need a huge amount of power (and volume) to sound good. Looking more for something I can listen to loud but also still enjoy the music at a much lower volume if that’s at all possible. Neutral and not to bright.
Living in the sticks, I can’t just jump in the car to go demo speakers. Only once, in the past, did I purchase a set of speakers online and unheard, going solely on the sales person’s recommendations. I learned the hard way to never do that again!

Equipment now: Coda CSiB integrated amp with W4S 2v2 SE Dac running Roon Nucleus.

I also wanted to mention that the Spires have phenomenal base, so much so I sold the 2 subs I was originally using with them. Floor standers and bookshelfs have come along way in SQ these days, but if I need to purchase another set of subs the budget is starting to dwindle.

No vinyl or CD’s, just Tidal.

$3,000 - $5000 budget, new or newer demos.

Thanks for any suggestions or advice you may have to offer!
Paul
high-amp
Still with me Al?

W4S finally got back to me with this response:

" So a 1k load is quite ridiculous really, not sure why they would release something like that but surely don't drive that single-ended. Running balanced will drive it and whatever degradation would be common to both phases so likely to cancel out. I can test a DAC to see how it handles it if you wish but I suspect it would be fine".

I'm afraid all this technical lingo is above me, could I please trouble you to comment on this response? Is the fact they "suspect it would be fine" acceptable in your mind?
Just this week I saw Paul McGowan of PSA audio imploring viewers to ALWAYS turn DACs up all the way and leave the volume control to the pre-amp.
However Paul’s DACs (and the vast majority of others) do not put out maximum voltages anything like 10.5 balanced and 5.2 unbalanced, as the OP’s DAC does. Which can certainly cause problems for some preamps and integrated amps, ranging from having to set their volume controls too low (where depending on the specific design the resolution of volume changes may become too coarse and channel balance may suffer); to some degree of sonic degradation; to outright overload and severe distortion.

The very different and more conventional specs on Paul’s DirectStream DAC:

Output level, low: 0.282 VRMS Balanced; 0.141 VRMS Single Ended
Output level, high, maximum: 2.818 VRMS Balanced; 1.414 VRMS Single Ended

Also, there are a number of very different approaches to volume control implementation that are used by various DACs, which have differing susceptibilities to sonic degradation at settings that are below max.

As is usual in audio, it all depends :-)

Regards,
-- Al

W4S finally got back to me with this response:

" So a 1k load is quite ridiculous really, not sure why they would release something like that but surely don’t drive that single-ended. Running balanced will drive it and whatever degradation would be common to both phases so likely to cancel out. I can test a DAC to see how it handles it if you wish but I suspect it would be fine".

I’m afraid all this technical lingo is above me, could I please trouble you to comment on this response? Is the fact they "suspect it would be fine" acceptable in your mind?

First, to be sure it’s clear, you would not be driving 1K with a single-ended connection, as the input impedance of the single-ended inputs of your amp is 50K.

Regarding ...

Running balanced will drive it and whatever degradation would be common to both phases so likely to cancel out.

... My understanding is that balanced operation tends to cancel even order distortion components (e.g., 2nd, 4th, 6th harmonics, etc.), but not odd order distortion components (e.g., 3rd, 5th, 7th harmonics, etc.). And generally speaking odd order distortion components are more objectionable than even order harmonic distortion components.

However, given that he "suspects it would be fine," and given that you are happy (or at least encouraged) with the results you are getting at this point, I suppose it is reasonable to put this issue aside.

Regards,
-- Al

Again, this is a little over my head Al, so maybe some layman's advice, please.

With a speaker change pending, I may consider doing the same with the amp. I may then send the amp in for a tune-up beforehand.
Is there something I could ask Doug Dale at Coda to do to limit the output voltage of the balanced outputs. Knowing what you have explained to me so far, yes, I can just turn down the volume on the DAC, but what of any prospective purchasers? I wouldn't want to have to go to the trouble of having to explain all this, especially when I don't understand it all that well myself. 

Why do you think this voltage is so high here? What would be the intended equipment to run balanced at this voltage?