Which component to upgrade to improve bass control?


Adding Symposium shelves and rollerblocks to my monitor (Silverline SR17.5) equipped system definitely helped but bass is still not nearly as controlled as I'd like.

Until we move into a different house where I can have a dedicated room for audio, I cannot use subs or add panels, traps, etc. to the room.  

So, I'm left with the possibility of upgrading a component but I have no idea whether my integrated (Wells Majestic), transport (Sim Moon 260) or DAC (Aqua La Voce S2) might be the best candidate for upgrading.

DAC UPGRADE ?
Are R2R ladder DACs simply weak in this area?  Searching the threads, I found a reference to DAC power supplies having a strong influence re: bass control but I lack the technical expertise to utilize this fact. Please keep in mind that I do not enjoy DACs that prioritize resolution above all.  

TRANSPORT UPGRADE ?
Would replacing the Moon transport with say, the new Pro-ject CD Box RS2 T be a better choice? 

INTEGRATED UIPGRADE ?
Would an amp with more grunt be the best choice?

I can only upgrade one of these at this point.
Budget:
Integrated: 5K
Transport: 3.5K
DAC: 5K
stuartk

Showing 1 response by pacoinmass

I agree with @gormdane.  I was also faced with bass issues, even after room treatments (that I needed anyway).  For background, I have a 2 channel setup with a sub and a 7.1 home theater setup in the same room so my listening spot for 2 ch. is relatively fixed (distance to TV).
After measuring the acoustics using RWE and a calibrated mic, i used Roon's DSP to tweak the bass frequencies.  (Taming a bump at 43hz had the best result.  That bump was caused by room dimensions...something I confirmed by using an online calculator.)  That improved the sound for digital however still let me with the same issues for my analog (turntable) listening.
My dealer suggested JL Audio's CR-1, an active x-over.  Before doing anything else, I verified that the bump at 43hz was present with and without the subwoofer active.  That allowed me to eliminate the subwoofer as a contributor to the bump.  The room calculations helped me confirm that it wasn't my speakers, etc.

Long story short, I was able to borrow a sample from my dealer and test it at home.  Using RWE I was able to adjust the cross-over settings and slope to tame the bass at 43 hz...still a slight bump, however much lower than w/out the CR-1.  The bass was tigher and the overall sound was much better.
I now listen to both digital (with no DSP) and analog with the CR-1 installed in my system. 

If your integrated allows you to send a signal out to a pre-process and has a power amp in, you might want to try the CR-1 if you can get a loaner.