dadapro

Hi all, I' m restoring an old MCM 1900, here you can reed the whole story. https://www.facebook.com/photo.php?fbid=10201497766941132&set=gm.704544146224282&type=1&theater I'm using the Techron TEF 12 acoustic analyzer to check the system. I'm in great dilemma if to keep it up with original components (these are quite old and cheap design), as it could be like an historycal car, or to improve it with today components, with a complete redesign, retaining just the wood boxes, trying to achieve a "Turbo MCM", but of course losing its hystorical value. I'm sure you all here know this system so I'll go directly to the questions. Bass Horn MWM/S The original specified driver is K43. It was good in the middle eighties, but is still good today? Mmmh, I'm not so sure, because power capabilities is quite low in respect to actual 15" woofers. Do you think it may be substituted with something of higher power/sensitivity/reliability, without affecting the overall bass sound quality? Do any of you tried to change it with something else? Do any of you know the T/S parameters of the K43? Mid bass Horn MSSM In this horn there is a Gauss 3181, but I know the original component is K41. Dont know how the Gauss was found in it. Do you know the parameters of this K41? It should be considered good as the Gauss? Mid high Horn MSM In this horn there are four K55V drivers on a manifold attached to a 2" K260 horn. Do you think that this complex can be substituted with something newer, and if so, with what? What do you think of single 2" phenolic driver on the K260? Do any of you tried to do this? High Horn MMTM This two horn with two K78 each. These starts at 6000 Hz hardly reach 16000 Hz and with about 108 dB sensitivity. I believe that a single horn with two 1" drivers may do a better job, maybe starting at about 4 Khz. and reaching at least 20 kHz. Sorry for all these questions, I would like to hear your opinions. Regards Marcello