Preamp connection to multiple powered subwoofers
Thank you kindly, Chris (@cal3713 ). @kalali, the suggestion by @koestner of a buffer stage is an excellent one. A number of possibilities were discussed in the following thread, most notably IMO the iFi micro iTube2: https://forum.audiogon.com/discussions/impedance-matching-question The micro iTube2 is available at B&H Photo Video for $399. Also, a few years ago another member reported excellent results using a custom made tube-based buffer stage in conjunction with his Audio Research Ref 6 preamp to drive a powered sub. (That preamp has a 20K minimum load recommendation, which was not met when using the preamp to drive both the sub and his main power amp). It was custom made for him by Tom Tutay of Transition Audio Design in Florida. Tom does not have a website as far as I am aware, but his contact info should be findable via a Google search. I don't recall the price, but I believe it was somewhere between $500 and $1K. Good luck. Best regards, -- Al |
the perfect solution is to place a good crossover behind the preamp.. the bass section from the crossover will feed a 1 input / 4 output amplifier, all output from bass amp being fed the same signal.. bass amp should be class a/b type.. in this way ….. - preamp only driving one component - main amp driving the R & L speakers duties are lightened up not having to produce the lower frequencies = better performance.. - subwoofers should all still receive a good strong signal.. Does anyone of such an amp (for bass) ???? |
Not sure if I quite follow the crossover arrangement but the use of a buffer such as iFi micro iTube2 seems quite logical, especially with its 1M ohm input impedance and ~150 ohm output impedance in direct buffer mode. I’ll probably start with a two subwoofer set up and see how it sounds and add more if needed. My other challenge is to pick the right driver(s), most probably an 8" or 10" to better blend with my Omega Alnico single drivers. Thank you all or your input. |
