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Origin Effects BassRig Ampeg B15 Fliptop recreation

The High/Low Cut switches are part of the “make my stage rig sound like the cab-sim” circuit, not there to emulate the Ultra Hi/Lo switches on other Ampeg amps. They are quick HPF/LPF to emulate the relatively extreme lack of bass and treble response from a B-15 cab while the EQ dials next to them are both standard boost/cut dials with the center being neutral. All 4 of these are post-amp sim. The manual shows response plots for all of these controls.

Bass and Treble come before parts of the “drive” circuit, so if you boost them you will get more drive and cut them less drive at any given Drive setting.
A few things:
  1. You may have missed where I literally just plugged it in and got it to work. I didn't scour the manual or look at graphs. I used my ears based on my decades with a real one. I figured out pretty quick how the HP/LP knobs helped dial in a sound on my combo.
  2. Charts be damned, I can tell you my real B-15 never suffered from a lack of bass and treble response. It always sounded good. If there were frequencies "missing", I never noticed or cared.
  3. The bass/treble are part of the "preamp" section of what is a B-15. Volume (as I think of it from the B-15; it's NOT Drive ... ugh) is just how "loud" that is. The BR Fifteen has the additional Output knob which is overall volume coming out of the pedal. I'm approaching it as I would a real B-15. On my B-15 it was rare for me to ever boost bass. If anything, I cut bass. I sometimes goosed treble depending on the room.
 
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A few things:
  1. You may have missed where I literally just plugged it in and got it to work. I didn't scour the manual or look at graphs. I used my ears based on my decades with a real one. I figured out pretty quick how the HP/LP knobs helped dial in a sound on my combo.
  2. Charts be damned, I can tell you my real B-15 never suffered from a lack of bass and treble response. It always sounded good. If there were frequencies "missing", I never noticed or cared.
  3. The bass/treble are part of the "preamp" section of what is a B-15. Volume (as I think of it from the B-15; it's NOT Drive ... ugh) is just how "loud" that is. The BR Fifteen has the additional Output knob which is overall volume coming out of the pedal. I'm approaching it as I would a real B-15. On my B-15 it was rare for me to ever boost bass. If anything, I cut bass. I sometimes goosed treble depending on the room.
Yes it was clear to me that you didn’t read the manual! I was just clarifying a few of the points you made since you didn’t seem completely clear what some of the features were. Objectively a B15 cab has both less treble and less bass than most modern bass cabinets, and the built-in Fifteen cab-sim and the hi/low-cut switches both emulate that response in slightly different ways (the cabsim is using a more complex curve while the switches are more straight-forward LPF/HPF switches). The “Amp EQ” section including switches doesn’t affect the DI out, only the 1/4” out and of course the cab-sim only affects the DI out.
 
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So far the reviews have been great. Is there anyone who didn't like the pedal at all, and if so, why?

Got the OE15 yesterday and played it for an hour or so.

first impression: LOVE the Amp Out with its pre and post low and treble controls and HiCut switch. Love the "edge of breakup" sound. It's more subtle and controllable via the attack of the playing hand vs the Tech21 VTBass (which has been my main drive and amp type pedal since its release)
DON'T love the CabSim so far. In this regard I prefer the Broughton Fliptop, where the Cab pot offers more control than the OE pedal.
Let's see how it does in a band setting. Maybe my impression regarding the CabSim will change.
 
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Using the BassRig Fifteen in the studio today and tomorrow. It sounds awesome. Here are the settings I am using with my Marcustico. There is a reason the B-15 was a good match with upright-y type things :)
 

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I’m honestly surprised it hasn’t gotten more attention around TB yet, it really is a uniquely “sweet” sounding pedal and mostly cancels out any GAS I might otherwise have for something like the Noble or Mantle. I know of course these all offer different features and some different types of tonal “mojo”, but the Fifteen and Super Vintage really suite what I want between the two of them.