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Hammond@zk3.dec.com Archives
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These are the archives from Mark Longo's original Hammond List, 1994-97
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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: question about a X77 Leslie
Andreas Ringpfeil wrote: > > >> > >> Hi all, > >> has somebody replaced his X77 Leslie with a better one?. > >> Is a exchange worth for example with a 122/760 Leslie?. > >> Does somebody know the value of a used 122 or 760/770 Leslie in fair > >> condition? > >> > >> The X77 Leslie has only an upper Rotor switchable fast/slow. > >> The low frequencies will be paste through a scanner or a rotosonic > >> drum (rotosonic drum single speed = fast rotation). > >> > >> My question are: > >> - the cross-over for the Bass are around 600 Hz and > >> for the upper Rotor are around 2500 Hz. > >> (L=2mH in row for the Rotosonic/ > >> C=8uF in row for the Treble Speaker) > >> Why this? > >> > >> - is there a sound difference between a rotosonic and > >> a fixed speaker with a drum? > >> > >> Thanks, > >> Andreas Germany > > >Why the high crossover? Mostly because of the scanner(s) / Space > >Generator (As Leslie called it). I recently re did one and yanked the > >scanner. Routed the signals as Main and Leslie, and added a two speed > >motor to the rotosonic. Sounded good, especially if you used the "Harp" > >and sent the percussion to tremolo (Which was the leslie and stationary > >channels togeather, just on the perc tho'). > > Hi Ted, > many thanks for you Information. I think this is a good solution. > I still have however two questions: > > - Where can i get the material for this solution? (220V/50Hz) > > - Have you replaced the cross-over-network in the X77 Leslie? > > Andreas Ringpfeil Germany/Nuernberg No, I left the crossover alone, I felt it was best to do so. 220V/50Hz only matters for the leslie motor. I have a few complete sets of fast/slow motors and more motors by themselves, so all I had to do was grab one off the shelf and clean it up. For 50hz 220vac motors try E-mailing Jerry Welch. <A HREF="mailto:jjwelch@theramp.net">Jerry Welch</A> As to the channeling I changed the wiring to get around the space generator. Sent vibrato to the rotors, main to main, and pedal to pedal. Also, I hard wired the roto-sonic and treble rotor to the vibrato amp, to eliminate the speaker switching. (this is all in the power supply chassis on the circuit board) -- begin 600 MOS.GIF M1TE&.#=A"P'(`-,`````````J@"J``"JJJH``*H`JJI5`*JJJE555555_U7_ M557___]55?]5____5?___RP`````"P'(```$__#)2:N]..O-N_]@*(YD:9YH MJJYLZ[YP+,]T;=]XKN]\[__`H'!(I`".R"2@R&PZ9<E-]$FM6C7(4?;*[1:/ M*;!W3,:)5=NR>KTZL]SLN+P#1RTGZ;E^+UG>WQ9_?(-K=5"$B&2"-XN)CDV- MAP]^CY5,D3-WE):</YMF1IVB.I\^F*.H+:>@JZFN)JT92K.Q%Z6ON+`EJ[6R MN;^[P;X>@K?`QU*3)+PBQ<C/R<(8O7VAU-"OU[98=MC>>,K+W"?:WYWE%<P@ MFLKHYH_&Z^.Z[\_NH</R>/<9"1+^#_P!9)%@X(J"W@SIFR:,'X:"$`-"1*B" M(D&#R!R&8TBN!<6)$O\]8DQA,6.8>1^*:9R`$&#+D!==E#RV4EU'D@+_Y9PI ML63+B!1^!@6JL^=#H=!JHI1VXF5(@1@G6I0Z$VE/HE1]9L6F<.&V;B@B2KTZ MU.7'LQ60`ET[U6#;D;^ZIEPJ+NQ/L40OH&4Y<*\%OT5A\N7:C!86P^M6BBT* M52](P8(!7S6;EO)0PB$:V027N&+.IY"-PJS:.+!HR:CAYBJGV8@?8]KD@G#) M&+)6TXS[6@Y,&G=H8*P#]7G=3GCFBO]JW]:YFWE;TVPK#V:.V6NU<.Q:'S>! 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