Very nice system. You might compare both A & B options. Personally I prefer line-level inputs from pre to sub, even with tubes in the main amp. I think interconnects make a big difference in the quality of bass. I use a long DIY copper ribbon that's very good with LF extension and dynamics, and cheap to build. Room placement is less critical with the DD than with other subs. The spectrum analyzer, 8-band digital EQ, and granular phase settings, can compensate for most room anomalies. There is enough headroom in the sub amp to stack several bands of the equalizer on top of each other if necessary. Corner placement usually provides the most reinforcement, but not necessarily the cleanest bass. If you buy used, update to 2.0 control software via the Vel web site.
I am considering a Velodyne DD-18...
...to complement my Joseph RM25 siII speakers. When I went looking for speakers with more bottom end the dealer who sold me the Josephs said that in my room, 16'X13'X9', I'd have trouble with resonations. He suggested that a sub that could be tuned to the room would give better results. After much reading, I'm gravitating toward the dd-18 but I have heard it said that a smaller room may prefer the dd-15. I assume that the dd-18 will better reproduce the very, very bottom end and that the equalizer eliminates the issue with the room size. Anyone have opinions on the above? Thanks for any replies.
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- 16 posts total
- 16 posts total

