Re: Doc modding Marantz imperial 7
Posted: Tue Jan 14, 2020 8:14 am
That has me thinking about the Visaton G20SC tweeter. That is the tweeter doc used the most before finding the chinese one that he doped. It is 88 dB rather than the 90 dB of the G25ffl that i use now. And it's £20 cheaper
A G20 will fit on the same baffle as the bass driver. If i use the G25 as the in firing tweeters and G20 for the rest then i get 2dB more output firing inwards. That would be good for when off axis and nearer one speaker than the other. Usually you would hear more of the nearer tweeter but if the in firing tweeter of the further away speaker was louder then that may even the balance.
Doing this would mean i use the two G25ffl i have already and buy six more G20sc which will save me a fair bit of money The frequency response of the G20 is not quite as nice high up as the G25 but nobody has ever had any complaints. G20 is less directional though as the soft dome is 5mm smaller - a good thing in an omni directional speaker ??
A G20 will fit on the same baffle as the bass driver. If i use the G25 as the in firing tweeters and G20 for the rest then i get 2dB more output firing inwards. That would be good for when off axis and nearer one speaker than the other. Usually you would hear more of the nearer tweeter but if the in firing tweeter of the further away speaker was louder then that may even the balance.
Doing this would mean i use the two G25ffl i have already and buy six more G20sc which will save me a fair bit of money The frequency response of the G20 is not quite as nice high up as the G25 but nobody has ever had any complaints. G20 is less directional though as the soft dome is 5mm smaller - a good thing in an omni directional speaker ??