Well, I
got a DriveRack 4800 a few weeks ago and re-did my bass management setup and now have just the 4800 and a 260.
The DriveRack 4800 is an amazing piece of gear!
I'm totally smitten with that thing; it really is worth the extra coin to go to this model. Even over the 260's, it is cleaner, has much better analog gain management, and now offer the option of full digital I/O as well as tons of other features.
The new HiQ net remote control UI is very, very slick. And now that one can control it over Ethernet, using a WiFi enabled laptop and you can just in the main listening position and tweak away.
All DR’s have SubHarmonic Synths, which for an IB user is a must, as many old recordings have their bass rolled off in either the recording or mastering process (thank you RIAA) that the Subharmonic Synth really repairs in a very clean and subtle fashion.
This new unit brings some features prior DR's did not have, the best is the new ‘AutoWarmth’ module.
What this does is provide a dynamic adaptation of the system tonal response based on the human ear’s natural response changes as volume drops. This is the
‘Fletcher-Munson’ curve one hears about for adjusting frequency so perceived loudness is maintained irrespective of actual SPL. This also known as an “
equal-loudness contour”.
The AutoWarmth module has a user controllable threshold setting (volume at which it takes effect) as well as variable ratios of application of the effect. Anywhere from 1/4 to 4x the effect can be applied.
Once the threshold is crossed, it dynamically EQ’s according to the curves and the current volume level.
It is very effective. I’ve been listening to some prog-rock this afternoon as I write all this up, and I’ve had it playing at an average of 73dB, but the fullness of the bass is all there.
It is miles ahead of the old ‘loudness’ controls, and nothing short of the new
Audyssey Dynamic EQ found in the new Denon AVP-A1HD processor is even close to it.
Really, really dig this feature
The other cool feature (found also in the 260) are the limiters, a must for the IB sub owner with a monster amp that could bottom drivers or fry voice coils. Setting them right is a bit of an art, but it will save you from overly aggressive demo’s and system usage errors (like turning on a crossover with the sub amp on).
I know my limiters just protected my rig from destruction recently, so I highly recommend them.
More details on
this thread about my system over at the MartinLogan owners club.