Dover.
:Yes the outcomes are entirely different if the counterweight is fixed....so.
:We have established that it will not be the end of the world for the cartridge if the horizontal mass is increased, this by reference to other arms that are heavy.
:Countary to stated design goals yes.....so.
:While BT designed the cw arm to swing at frequencies below the core arm frequency, it does not neccesariy prove that using 2 springs will result in that criteria being met. It is almost certain that the use of three springs, as Chris did will push the frequency above core.
:I know that BT designed the arm to have the two spring systems, Cart and Counterweight. I just don't think that it is a good idea because they talk to eachother. Has anyone thought about why the CW spring(s) and their damping are so fussy to set up?
:Yes I pulled the resonance graph and math from the net. This because it explains the effects more clearly than the literature we regularly refer to here at my work. Those readers that understand the math will know why I chose a 6 times multiplier.
:My prime reason for fixing the counterweight is to restore the full bass drive. You have in an earlier post talked about not needing response below 30hz and that response in this region can be problematic, or words to that effect. I do want response in that range and yes it can be difficult to sort this area but with effort it can be done and the results are most rewarding.
:We are all biased, it is astonishingly arrogant to suggest that you are not.
Chris.
Agree the room is critical, same for the air feed.
:Yes the outcomes are entirely different if the counterweight is fixed....so.
:We have established that it will not be the end of the world for the cartridge if the horizontal mass is increased, this by reference to other arms that are heavy.
:Countary to stated design goals yes.....so.
:While BT designed the cw arm to swing at frequencies below the core arm frequency, it does not neccesariy prove that using 2 springs will result in that criteria being met. It is almost certain that the use of three springs, as Chris did will push the frequency above core.
:I know that BT designed the arm to have the two spring systems, Cart and Counterweight. I just don't think that it is a good idea because they talk to eachother. Has anyone thought about why the CW spring(s) and their damping are so fussy to set up?
:Yes I pulled the resonance graph and math from the net. This because it explains the effects more clearly than the literature we regularly refer to here at my work. Those readers that understand the math will know why I chose a 6 times multiplier.
:My prime reason for fixing the counterweight is to restore the full bass drive. You have in an earlier post talked about not needing response below 30hz and that response in this region can be problematic, or words to that effect. I do want response in that range and yes it can be difficult to sort this area but with effort it can be done and the results are most rewarding.
:We are all biased, it is astonishingly arrogant to suggest that you are not.
Chris.
Agree the room is critical, same for the air feed.