Subwoofer recommendation for Dynaudio Confidence C4


Hi, 
     I'm thinking of adding 2 subwoofers to my Dynaudio Confidence C4. Leaning towards REL S/5 pair. Is this the right choice for Dynaudio?  Do I need 2 sub's? Does anyone see any issues with this setup? My AMP is Bel Canto e600 Mono block.
karurravi
I own a set of C4 signatures and use a REL R-528.  It’s quite sufficient.  If you do end up using 2 subs, you may face some challenges with getting them phased and integrated properly, key word being “may.”  I use a DEQX to get the alignment for the sub and C4’s.
2 subwoofers offer better room and system integration. You get better seat-to-seat consistency, less peaks and dips, less localizability, deeper extension or louder output, etc.  
  
REL sub’s are a bit over-rated.  
  
If you don’t have bass mangement (dedicated subwoofer out), and this either need to use REL’s Speakon method or XLR passthru, look at something like a pair of Neumann KH 805’s or a pair of Rythmik E15’s with the H600XLR2 amp option (if you want a nice looking subwoofer, Salk will build you the kit version of the E15 in whatever finish you want, plus they make the cabinet thicker and improve the internal bracing, so it also performs better, just specify you want the H600XLR2 amp, this will of course have a wait time as they have to make it).
Mzkmxcv,

We agree with you totally about having dual subs. Disagree with your comments about Rel.

Rel makes some of the best woofers on the market known for speed, accuracy and integration. The exact model mentioned received a rave review from TAS.

Salk makes decent speakers using other peoples drivers. Rel or JL Audio
design from scratch everything, this generally means a better performing product.

The Salk product is very impresive in terms of weight, however a well constructed box doesnt need to be that heavy and for music servo woofers can often times be considered slow.

The only issue with Rel is that there is competition from JL and Paradigm is coming on strong with some unbelievable models. Paradigms better woofers come with the Perfect Bass Kit a version of Anthems Room correction system tailored for bass. The Perfect bass kit allows for sophisticated room tuning for flat, tight bass in room.

Dave and Troy
Audio Doctor NJ