|I'm following with interest the thread and must say that I'm baffled: Goto's "instructions" are - SIMPLY said - a mix between non-existent and wrong... I love what Goto's did in my system... BUT I think I did more with "my own" care, "my own" taste, "my own" pushing the jump-bar ahead, being curious and never content of the "ownership", per se, BUT playing as a cook with a kitchen table full of great ingredients... a starting point to prepare a nice dish.
An home grown tomato can be as tasty and classy as a gourmet, super-expensive plate and... let me say: Goto or whatever are - ALWAYS - a starting point and there's absolutely no guaranty of successful results, period.
Me too, four years ago, I was (wrongly) feeling me as arrived at the harbour... i.e. - hey, I own Goto... BUT, I learned, it was the beginning of a trip, not yet finished: RTA, new studio and speakers positioning, diaphragms alignment, digital time alignement and room correction...
My best luck was knowing of and meeting Franz Hinterlehner from Austria, a dedicated, no frills, knowledged and super-serious tech-head, who - as Roman pointed out - is able to properly measure and talk about hertz and decibels and related... not as a pub-chatting but finalized to a musically coherent and satisfying result.
Like when a cook looks at the ingredients and the plate isn't ready, yet... the same a LOT OF attention and knowledge is needed.
The "Goto's instructions" made me deluged, almost angry... Mingsu and every Goto user around simply repeated a dogma - parrot-like - since the times of "Royal Sound/Goto", back in the '70s.. 1st order/2nd order and "those" foolish frequencies cut-offs... BLAME on them!
Franz and myself - while working at my system - discovered mixed, bad and extremely good, things, while dealing with my Gotorama: the SG-570BL with S-150 horn mid-low isn't good between 100 or 150 (the horn name;-)) or 400 hz with a.m. crossover and cut-off frequencies... it's - in my (small) room - 250 hz 4th order low pass and 1200 high-pass 1st order... and the distortion is an AWESOME 0,06% (!!!) at 1000 hz, with 112,8 db/W/m sensitivity, so - unbelivable, and VERY near to specs... also it's pure BS "that" 5000 hz for the poor SG-16TT... my own SG-160BL is - after careful measuring and computer rendition and fiddling, crossed at 7000 (1st order) with S-600/SG-370DX-BL... at 5000 hz there was a deeeep valley and a lot of TacT's digital correction needed...
... but, hey... it's my system, room, tastes and ears!
I (now) absolutely know that it's virtually IMPOSSIBLE to tune a three or a four ways system - any make - by ear and that, in this VERY case, DIYing can be a very boring, unsatisfying and extremely expensive way to go...
I'm sincerely glad "we" (someway) all contributed to loudly say - "The Kings are Naked!" - i.e. as Mingsu would say;-) - a Lamborghini doesn't make a Schumacher, a Goto (or Vitavox or ALE or WE or Kanno or G.I.P.) doesn't make - per se - a great system... a piled bunch of drivers on a bass box isn't a top system (also my fault for years...): it's someway organized, maybe pleasant, "noise"- BUT not shivers-making "music"... same happens when I press " bypass" push-button on TacT's remote... "What?!?! I was listening to this shit?"Strangely, it reminds when - a couple of years ago - I had some serious kidneys disease... ONLY when I was cured and out of the hospital, I understood how bad I was, before... it's quite elusive and dangerous stuff: audio-wise, I suggest to do not buy or sell anything 'til you'll do your homeworks (RTA and the like) or - if technically flawed like yours truly - to find your personal "Franz Hinterlehner"... I sincerely wish you the last evenience. Tuyen;-)