DBX Expander

Frzninvt,

Great information. Thanks!

I have a 3BX series II I picked up for a couple hundred about a year back on Ebay that I think is worth its weight in gold when a particular recording needs it. How is that similar or different from the others?

The 3BX series II was shrunk down by the use of IC's vs. the all discrete circuits found in the original wooden side 3BX unit. This is actually the least favored unit of all for whatever reason (some say it exhibited the pumping effect), not sure if the Series II still used Stereo or Mono VCA's but the stereo VCA's in the original 3BX caused the image to wander.

I owned one for a short period of time and found no issues with it. I prefer the later models because of the addition of the "impact restoration" function which really increases the realism of the percussion attacks. As with all range expander wise use of the transition and expansion levels provide the best results.

I don't hear those issues with it either. Impact restoration would be an interesting enhancement to try, though impact of percussion is certainly improved significantly just through expansion as is with the 3bx S2. Percussion has startled me and made me jump on several recent occasions with the 3bx switched in.

I use my unit primarily for the Impact Restoration. The effect of the IR is to really open up the leading edge of sounds that already have a fast attack. High hats, cymbals, plucked strings, bass thumps really sound much more like live music. Until you A/B back and forth, you don't realize what you've been missing - once you do, there's no going back.

I totally agree when it comes to dial it in by frequency range, and adjustable independent impact level, and overall output level the 5BX has no equal. The Impact Restoration function is worth the price of the 5BX alone. The other features certainly have their place as well it is a great sounding musical piece of equipment. It also has a very elegant look to it. It's rarity certainly makes it a conversation piece.

I have heard of people using the Quantum or Quantum II to perform similar functions and over larger frequency ranges but I have never tried one myself.