dylan
05-25-2006, 01:29 PM
I am in the process of restoring a late 70's (between 77 and 79) RMI amp head and wish to build (or have built) a cabinet to match the original's specs.
RMI was the Rocky Mount Instruments Co., the company that made electra-pianos, Rock-si-chords and other relatively cheesy electric pianos and harpsichords of the time (Beatles, Ray Manazarek, Genesis, others used at times). RMI was a division of Allen Organs and i have obtained the original schematics for the amp which include a diagram of one of the accompanying cabs. The amp (part fo the 300 series) came with one of three cabs the G-180 (presum. for guitar, certainly the loudest), the K-180 and B-180. The diagram is for the G-180 which had a 15" JBL speaker. The only person i have ever contacted who can confirm having one works for an East Coast Sound Touring Equipment Co. and posted on his site that it was possibly the best built and specs of any Cabinet he's ever worked with (!). he is going to take pics and measurements which will greatly aid in the possible building/recon of said cab and confirmed that the speaker is a JBL D-130 (didnt say which letter series). the tweeters in the diagram (which i will try to attach) say 292-0028 and i am trying to find out if they too were JBL products, who might have made the cab itself (the guy from Allen wasn't sure but said he'd ask around) and if anyone had any advice for possible initial replacements for the D-130 if i cant afford it at first or a used cab on the market which might temporarily suit my needs (I know the Fender Dual Showman and a few Sunns of the period used JBL D-130's), taking into account that this will occasionally be used for guitar but primarily for Synths and Organs (for which i have a speakeasy tube preamp as well) and that huge power and volume are not necessarily the primary need for this system . As to why i wish to (expensively) try to recreate the original cab i have never heard..im not sure but thats my quest for now...thanks for your time.
RMI was the Rocky Mount Instruments Co., the company that made electra-pianos, Rock-si-chords and other relatively cheesy electric pianos and harpsichords of the time (Beatles, Ray Manazarek, Genesis, others used at times). RMI was a division of Allen Organs and i have obtained the original schematics for the amp which include a diagram of one of the accompanying cabs. The amp (part fo the 300 series) came with one of three cabs the G-180 (presum. for guitar, certainly the loudest), the K-180 and B-180. The diagram is for the G-180 which had a 15" JBL speaker. The only person i have ever contacted who can confirm having one works for an East Coast Sound Touring Equipment Co. and posted on his site that it was possibly the best built and specs of any Cabinet he's ever worked with (!). he is going to take pics and measurements which will greatly aid in the possible building/recon of said cab and confirmed that the speaker is a JBL D-130 (didnt say which letter series). the tweeters in the diagram (which i will try to attach) say 292-0028 and i am trying to find out if they too were JBL products, who might have made the cab itself (the guy from Allen wasn't sure but said he'd ask around) and if anyone had any advice for possible initial replacements for the D-130 if i cant afford it at first or a used cab on the market which might temporarily suit my needs (I know the Fender Dual Showman and a few Sunns of the period used JBL D-130's), taking into account that this will occasionally be used for guitar but primarily for Synths and Organs (for which i have a speakeasy tube preamp as well) and that huge power and volume are not necessarily the primary need for this system . As to why i wish to (expensively) try to recreate the original cab i have never heard..im not sure but thats my quest for now...thanks for your time.