So, enough of hifi erotica, on to the sounds of music.
I have a playlist of lossless music that I put together recently to use for auditions. Music that I am very familiar with so I start with this one of cause.
The first ones on were the 50s.
Within a third of a second of playing the first track a loud WOW comes out. It was a W. Marsalis track. Just cuts through with dynamics. And the wow continues through the rest of the tracks. The mids and highs are brilliant. The bass... It is very good - fast and correct, but with me used to a sub it sounds thin. (But I expected that and I know I need to understand the ATC bass more through more extensive listening of various tracks).
After abt 20 min I try the 100s.
Same tracks. Same WOW. They are a bit louder, which feels like 'bigger sound'. The bass is better, i.e. still fast and correct but is a bit deeper. Just a bit. It is at this point that the thought "ah, maybe 150s and no sub..." hits me. But for now - on with the 100s. I have a couple of tracks with particularly strong bass. One is a Bach organ track which has clean tones abt 30Hz and the other one is Grieg In the Hall of the Mountain King which has big drums and orchestra. I would say that 100s do those very noticeably better than the 50s in terms of depth (which should be expected from the specs). But I could do with a bit more depth.
Having said that, the bass on both is excellent and is indeed, as I heard many times from others, "in another league", at least in comparison to what other gear I have heard before.
I then put the sub on and spend some time tuning it up. Go through the playlist again - definite improvement in depth. I do not notice any negative impact of adding a sub.
Then, a day later, during the weekend, I get ready for the full-on listen, with the objective to choose the set-up I will go for, that is 50s, 100s, or any of those with a sub.
I do a quick selection of 22 tracks - representative enough for me to evaluate the sound for dynamics (strings, winds, voices, percussion etc), complexity (big orchestral or similar passages), bass (various types) etc.
To keep it clear, I actually put a quick table together on a sheet of paper (tracks and what I am checking on the rows and which speakers are played on the columns) to note at which level every track is played and what the finding is. I then slowly go through all the tracks with each of the set-ups, noting my observations. 50s, then 100s, then 100s + sub, then 50s + sub.
The results?
Well, the step from 50s to 100s shows that 100s are louder and have noticeably deeper bass. I do not notice that the bass is slower, as was suggested to me before. I do not notice any difference in dynamics or anything else in mids and highs. I would say the only difference between the two is depth of bass.
The step from 100s to 100s+sub then further extends the bass. With the sub tuned to assist subtly I again do not hear any negative impact of the sub's presence.
The step from 100s+sub to 50s+sub, I find, keeps all the benefits of adding the depth and all the dynamics are still there.
These were my impressions. Based on these I have decided to keep the 50s and use them with a sub. At the moment it is a modest Rel but I will be looking into ATC subs. If they are anything like the ATC speakers, they are definitely worth a try! What I hope for is that, using the 'saving' from not getting the 100s, I may get an ATC sub and extend the bass even deeper than with the 100s and, hopefully, have not only deeper but also faster bass. But that would be the next step.
Another thing worth saying here is the that Grieg track has a very loud and complex part at the end. And both 50s and 100s were the first speakers that could play it without turning it into a noisy mess. It remains music, with all sounds separate, to the very end - loud or not. Is that not great?
So, I (and all of the few who were around during the trial) have been very impressed with the speakers - both the 50s and 100s. Big, effortless, dynamic, fast sound with endless headroom. The two models are so close in performance that choice between them is not easy. The improved bass of the 100s is complicated by its huge size so inevitably drives the decision into a trade off. If size was not an issue, the 100s are better. 150s I imagine would be even better still. For me, the 50s+sub is the solution.
Next on the list - packing the 100s up for return and getting a demo of ATC C4.