hi, barry. sorry for the delay in responding. no, the M-2 is feeding the ELF low signal only to the red series ELF 18 cab and the two black carpet ELF 18's. the AH-350-SMX is sending part of that low ELF signal to the red carpet cab, and the AH-1000-7 is feeding part of the low ELF signal to the two black carpet cabs. as dan from bag end explained it to me after their tech guys looked at my cabs and heads, the M-2 requires a full signal input not coming out of any kind of effects loop sends that would amount to high pass outputs. the M-2, after receiving a full range signal w/o any EQ alterations (it's got to be a pure low pass signal unaltered in any manner or form), then has to send the INFRA signal to dedicated amps in order to effectively drive the ELF bag end cabs to the full 7Hz level. if you hook an M-2 integrator/processor up to any non-ELF cab, even a non-ELF bag end cab, you'll blow the driver! don't do it. dan warned me strongly about never hooking an M-2 up to a non-ELF cab. serious damage will occur and will void any warranty!