What is “warmth” and how do you get it?


Many audiophiles set out to assemble a system that sounds “warm.” I have heard several systems that could be described that way. Some of them sounded wonderful. Others, less so. That got me wondering: What is this thing called “warmth”?

It seems to me that the term “warm” can refer to a surprising number of different system characteristics. Here are a few:

1. Harmonic content, esp. added low order harmonics
2. Frequency response, esp. elevated lower midrange/upper bass
3. Transient response, esp. underdamped (high Q) drivers for midrange or LF
4. Cabinet resonance, esp. some materials and shapes
5. Room resonance, esp. some materials and dimensions

IME, any of these characteristics (and others I haven’t included) can result in a system that might be described as “warm.”

Personally, I have not set out to assemble a system that sounds warm, but I can see the appeal in it. As my system changes over time, I sometimes consider experimenting more with various kinds of “warmth.” With that in mind…

Do you think some kinds of warmth are better than others?

Thanks for your thoughts.

Bryon
bryoncunningham

Showing 3 responses by jeffreybehr

'Warmth' for me is created by a tonal balance that makes reproduced large-orchestra music sound like real music played in a good hall. Of course, a 'good' hall is one that supports the lower frequencies of the orchestra so that the music doesn't sound 'cool' or 'thin'. 'Rich' is another word for warmth. I think the recording processes remove warmth from the music, and a music-reproduction system must recreate it. Warmth is defined, for me, as a tonal balance with a dB or 3 more energy in the lower MR/upper bass...mayb eup a dB by 300Hz, rising to maybe 3dB by 100Hz and maintaining that thru the bottom octave.

Of course, one can go too far on the warmth scale, which turns to 'thick', and that too doesn't sound real to me.

Systems that measure flat tonally are too thin and too bright for me.

Vacuumtubes in the system help retain natural musical warmth, but IMO the speaker system is most responsible for a system sounding warm and real...or not.
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IMO Hifibri's got it..."The more one listens to different types of live music, with different types of instruments, in different spaces, the more one realizes 'the sound' is always different, yet there is usually always that warmth of tone. Since this is a universal quality of live music, it makes sense to strive for this quality in a system."...
...and Mrtennis doesn't. As I said and Hifibri reinforces, the recording process removes natural, real warmth of tone from the sound of the instruments, and it's the reproduction system's job to recreate it. Indeed the system that do that are NOT tonally nuetral or 'accurate', but to me 'accurate' systems sound so much NOT like real music that they're unlistenable, so how accurate is that?

Tuning a system to have the right amount of warmth without sounding thick is difficult, but creating a great-sounding system is tough, isn't it?!?!?!
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