The Yaesu FT-1ØØØMP Transceiver has a very comprehensive menu 

system. 

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Below  are the most popular menu settings 

for a wide, high fidelity transmit audio, with plenty of Bass content.

Alter the menu's in this order, remembering to make a note of your factory settings

in case you need to revert the radio back to your previous settings.
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Menu 4-4 N#3 

Menu 4-5 SSB-lpf N# "3200" 

Menu 4-5 SSB-hpf N# "100" 

Menu 5.9 on N# "6.0" 

Menu 7-7 SSB-r setting N# "100-3100" 

Menu 7-7 SSB-t setting N# "100-3100" 

Menu 9.0 R-lsb setting on " .050" 

Menu 9.0 T-lsb setting on ".250 " 

Menu 9.0 Proc lsb setting on "-.320" (minus)

Menu 9.0 R-usb setting on ".050" 

Menu 9.0 T-usb setting on ".250" 

Menu 9.0 Proc usb setting on "-.320" (minus)

Menu 8-9 R-lsb setting on " .000"

Menu 8-9 T-lsb setting on ".000 " (zero)

Menu 8-9 Proc lsb setting on "-.200" (minus)

Menu 8-9 R-usb setting on " -.000"

Menu 8-9 T-usb setting on ".000 " (zero)

Menu 8-9 Proc usb setting on "-.200 " (minus)

Menu 8-9 Proc A3 setting on "-3.00" 

EDSP button on ( green led light lit).

..............

Tip:

When altering menu's 8-9 and 9-0, always alter 
menu 9-0 first then 8-9 after, this is because
when 9-0 is altered, it re-set's 8-9 to factory
setting's.