Turn off the bass on an SR18?

Help! How on earth do I permanently turn off the bass line on the SR18? I know I am able to mute it after powering on, but I want it off all the time. I want a drum machine, not a "drums and bass" machine!

Plus, the bass patterns are in random keys - F#, G#m, A, etc. What possible use is that? I want to use this in live performance, and don't want to worry about an off-key bass line appearing from nowhere. The bass should be an "opt-in" feature, not an "opt-out." Can anyone help me?
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  • Hello,

    Thanks for posting. I'll be happy to help!

    To mute the bass line on a pattern or song hold the Mute button and press the Bass button.  This process can be done during playback or when stopped.  The drum and percussion tracks can also be muted using the same process with the Drum and Perc buttons.
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  • I’m very frustrated
    Hi Bill, thanks but ... You misunderstood my question. I want the bass track OFF BY DEFAULT.

    I am a bass player. It seems ridiculous to have a drum machine that automatically plays a random bass part in a random key. The bass part should be an "opt-in" selection, not an "opt-out."

    The default "random bass part in a random key" thing just seems nuts. Can you please help me keep the bass off?
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  • Sorry for the confusion. Are you playing back the built-in preset sounds? In order to mute the bass, you will first need to save the pattern to a user bank. To do this:

    1. Make sure you're in PATTERN MODE by pressing PATTERN/SONG. The display will say PATTERN at the top.
    2. Press and hold the SAVE/COPY button. You'll notice the REC LED blink.
    3. Select the user bank where you want your pattern to save. You can change the value by rotating the value dial, using the INC/DEC arrow buttons, or simply typing in the number of the user bank using the number keys.
    4. While still holding the SAVE/COPY button, press the REC/ENTER button to confirm.The display will read SAVE DONE. Release both buttons to exit.
    After this, you'll need to erase the instrument events from the user pattern that we just saved. To do this:

    1. Again, confirm you're in PATTERN MODE, and make sure the playback is stopped.
    2. Press PRESET/USER to navigate to the user bank. Your display will say USER.
    3. Press and hold ERASE. The display will read PATTERN ERASE?
    4. While holding down ERASE, press and hold the layer you'd like to erase (BASS, in your particular case) The display will read BASS ERASE?
    5. While holding down BASS and ERASE, press REC (ENTER) to confirm. The display will read BASS ERASED.
    After performing these steps, you should notice the bass will not play back with the drum pattern. 

    Hope this helps! 
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  • I’m extremely frustrated!
    Hi Bill, thanks for the quick reply. But honestly, this is ABSOLUTELY NUTS!. You say it requires at least nine steps (more like 15) per pattern to remove the bass part.

    So if I want to to use 40 drum patterns in a performance, I will need to enter at least 350 key strokes, and use up nearly half of my user patterns.

    But, if I want to change the "low battery warning" by 1/10 of a volt, no problem, it's in the system setup!

    Maybe you can tell me: Why is there a random bass part permanently attached to patterns in a self-described "Drum Machine?" Seriously - Can you answer that question? I may have to just return this dumb thing.
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  • I’m Extremely Frustrated!
    Bill, also: Everything you have described is in the Reference Manual. I have read the reference manual. Maybe a senior tech or engineer can help me? Thanks.
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  • I’m Frustrated, disappointed...
    Well OK! Two things:

    1. I got the dang BASS turned off permanently. Not sure how I did it, something in System Setup, I think.... In fact, I can't even figure out how to turn ithe bass back on.

    2. The "Reference Manual" is wrong. Page 45, System Setup, it says:

    "4. After making all needed changes, press SYSTEM SETUP again to exit, or choose another page.

    Note: all parameters on the following pages remain as set, even if you turn off power, until the parameters are are changed again."

    This is WRONG. You must press and hold SAVE/COPY, then press REC (ENTER),
    and you will get the SETUP SAVED message. Otherwise the parameters are not saved.

    Come you guys, you are Alesis! Jeez .....
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  • 1
    Here is the real answer.

    Permanently (globally) turn off BASS on an SR18

    From the default / opening screen:

    -> Press BASS
    -> Press DRUM SET
    -> Page Up/Down to get VOLUME
    -> Press DEC (or rotate dial) until volume is zero
    -> Press + Hold SAVE/COPY
    -> Press REC (ENTER) for SET SAVED

    Done! (Same works for percussion, too.)
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  • Thanks for passing this along. I'll make sure to forward the typos along to my team.
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