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Is this a joke or are you for real? Class A amps are far too inefficient (25% or less) for high power applications such as a subwoofer. In addition, the higher linearity of such amps are not necessary for subwoofer applications.

KJ; At this point I would suggest looking into a different product since the Z9 is not working out for you. We can't offer you any help since our experience is with the American model that has worked flawlessly in our tests.

Thank you ;)

Yes I am well aware of 1/4 wavelength distributed transformers though I don't consider that to be the same as electrical resonance exhibited in RLC networks. The problem is evoking a lumped circuit model for a distributed network (cable). When you calculate cable resonance using a single RLC...

John; Again Steve's FAQ clearly states that the cable is resonanting as if it were a lumped RLC circuit and proposes a solution " Cables don't resonant. Again what we are seeing here is the amplifier + cable + speaker interaction at frequencies where the characteristic impedance...

Steve; Cables do NOT electrically resonant! They are not like a basic RLC lumped circuit in that respect. Please take a look at Rod Elliots article that we worked on together in the past titled Loudspeaker Cable Characteristic Impedance. What you are showing is interaction between...

Chris; There is no reason why you can't get high performance wiring for low cost. Check out our various reviews where we demonstrate many lost cost cables outperforming the more expensive ones. With that, for your budget I suggest cables from: AVCable Bluejeanscable If you call...

While its true you benefit from reduced DC resistance of biwiring two identical cables as opposed to single cables, you also risk doubling your capacitance. This can be an issue with exotic cables that are already high in capacitance to begin with, especially when attached to sensitive amps...

Steve what type of "resonance" are you referring to? Mechanical or electrical? I am hoping you are referring to mechanical since cables don't electrically resonate. Stereophile/Trasparant Cable unfortunately promotes that fallacy, but it just isn't true. Speaker Cable Resonance As for...

Steve Dielectric Absorption is another unfounded snake oil claim that has little relevence for speaker cables. Its so called effects are already accounted for with the Cp measurement. See my brief article on this : Dielectric Absorption As for transient response differences between your...

Actually I did remove the Zobel for the Goertz otherwise the capacitance measurement would be out of whack and vary based on cable length. I thought originally you told me those little beads were resistors, but I suppose even resistors have inductance so I do understand your concern. I...

No Justin that is called biwiring. There is little to no benefit of doing so and some receivers have the A,B speaker outputs wired in series so in that instance you will surely lose performance. You can check this by having your speakers connected to A, then press B and see if the sound...

Nice amp, dead forum. Thought I would post in efforts to bring it back to life. Any takers?

LOL :D I would only recommend changing out your factory jumpers for something else if: 1) They bend or break and no longer can make good contact 2) You want something that looks cooler $10 aint much money so no biggie and if you think it makes it sound better, more power to you!

Mitchell; Where is your subwoofer? What is the height of your speakers? How can you couches be 2 feet above ear level? They must be huge! I don't have enough info about your setup here to comment intelligently, so I will comment like a babbling idiot instead :D I would suggest...

Now that I have the new Wayne Kerr 6420 at my disposal 24/7 I will certainly be measuring more cables in the future. Bettercables refuses to send us anymore product since we singled out their bulletplug and poor termination connection as an example in our Component Video Cable article last...

Yes! In fact most cables are simply repackaging of OEM cables so if they measure the same it is likely they are the same cable. Only poorly designed cables are sonically distinguishable.

Haha Mark thats funny. If we eliminate the green links and add more banners, we will likely hear from our readers that we sold out and should eliminate the banners. The truth is if we can't keep a constant revenue stream into this site, there wont be a site and we will all have to go back to...

John; What frequencies are you talking about? Low frequency bass (where the most amplifier power is required) below 80Hz is omnidirectional and the ear cannot perceive directionality or lateral clues? I suggest reading some of the white papers authored by Dr. Floyd Toole and Thomas Holman...

Both myself and senior staff rarely have time to police these forums for spammers and advertisers. This is why we have moderators. Our moderators are kind enough, on their own time to help us here. Anybody noticing blatant spam violations, please send us or our moderators such links and we...