Hi ct0517,
It appears that your Quad 57 setup is extremely well thought out and executed. While the 57 is a speaker that is fairly "easy" to set up and will deliver good sound under most conditions, I am sure that going the extra mile as you have will make them extraordinary. I place a very high priority on speakers sounding harmonically saturated and complete, and lively, when played at low volume levels. The 57s and many horn-based systems are very good in that respect. I don't care much that the 57s, or my horn system, do not work as well at the extremely high volume levels that others think is important.
I also agree with you that the bass tonality and speed of the 57 is extremely good and I see you have addressed the extremely low bass and "impact" issue with a subwoofer. Done correctly, subwoofers will add those elements of performance without detracting from performance. The best implementation of subwoofers I have heard involved using them at very low levels, setting the crossover point quite low, and using multiple subwoofers (easier to get smoother and uniform bass coverage). I think you are going in the right direction.
I totally agree with you that the 63 does not have the same magic as the 57, it sounds analytical and "cold" by comparison. As for stacked quads, I have heard both simple double 57 and the Levinson setup with the supertweeter between the top and bottom panels. I like the stacked 57s for the added sense of scale, but, I have not heard them enough to know what that setup might give up (every difference involves compromises).
I particularly like the approach you have taken to getting the sound you desire. You started with something that delivers the essential "magic" (whatever that is to you, I am sure it differs for each listener) and then found ways to improve and refine the sound. That makes more sense to me than jumping around and constantly replacing one speaker with another totally different speaker and expecting the latest "technological breakthrough" to deliver the magic.
It appears that your Quad 57 setup is extremely well thought out and executed. While the 57 is a speaker that is fairly "easy" to set up and will deliver good sound under most conditions, I am sure that going the extra mile as you have will make them extraordinary. I place a very high priority on speakers sounding harmonically saturated and complete, and lively, when played at low volume levels. The 57s and many horn-based systems are very good in that respect. I don't care much that the 57s, or my horn system, do not work as well at the extremely high volume levels that others think is important.
I also agree with you that the bass tonality and speed of the 57 is extremely good and I see you have addressed the extremely low bass and "impact" issue with a subwoofer. Done correctly, subwoofers will add those elements of performance without detracting from performance. The best implementation of subwoofers I have heard involved using them at very low levels, setting the crossover point quite low, and using multiple subwoofers (easier to get smoother and uniform bass coverage). I think you are going in the right direction.
I totally agree with you that the 63 does not have the same magic as the 57, it sounds analytical and "cold" by comparison. As for stacked quads, I have heard both simple double 57 and the Levinson setup with the supertweeter between the top and bottom panels. I like the stacked 57s for the added sense of scale, but, I have not heard them enough to know what that setup might give up (every difference involves compromises).
I particularly like the approach you have taken to getting the sound you desire. You started with something that delivers the essential "magic" (whatever that is to you, I am sure it differs for each listener) and then found ways to improve and refine the sound. That makes more sense to me than jumping around and constantly replacing one speaker with another totally different speaker and expecting the latest "technological breakthrough" to deliver the magic.