Biamping with very different amps
Hi Al, not on the Kube I once had used, looks like the op’s one is different and has high and low gain controls, if so and he has the range to match the amps, then yes no need to use a Schiit passive then. If not get the Schiit is only $49. That way he can also do it without the Kube in, as it’s full of opamps TL071/2 from memory, and they sound very soso in the mids and highs. http://www.canuckaudiomart.com/details/649052620-kef_kube_1042/ Cheers George |
n any event, though, the KUBE would probably make that a moot point, while leaving the other issues I cited unresolved.If a Kube is used then it would drive the (lowest gain) poweramp and also the Schiit, which drives the (highest gain) poweramp, then the main volume control duties are up to the active preamp. Cheers George |
george, the suggestion of using a volume control device such as Schiit Sys will not work in this particular situation since that will reduce the overall volume going into the preamp and not change the gain of the amplifier. Read again, the Shiit is to go between the active preamp (or kube if being used) and only the power amp with the highest gain, so to just reduce it to the same gain as the other power amp. Then the active preamp will be master volume. Cheers George |
roberjermanYou really need an active crossover to split the signal into high and low pass outputs to drive the bass and mid/high amps! An active crossover will allow you to set the roll-off slopes (not doeable with passive) and levels for the best sound! Been there, done that! To do that successfully with an active xover, he would also have to completely by-pass the internal xovers inside his Kefs, way too much work. No, passive by-amping will be fine, as those Kefs have a very well thought out quality passive xover network, with for memory conjugate matching circuitry as well. Cheers George |
No not crazy, sweetness of the tubes for mids and highs, and control for the bass with the jc1’s. If your passive biamping which it sound as what you are doing, both amps would have to be exactly the same gain, which is near impossible unless the same brand of amps. But this is an easy fix, the louder of the two amps just needs a passive volume control on it’s input to bring it down to the same level as the other amp, once that is set, the main volume is then done by your main preamp or source volume Easiest way is to get a Schiit Sys $49 passive volume control. http://www.schiit.com/products/sys Cheers George |
