Rolls FX953 Bruksanvisning
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                    FX953
                
                                
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Connection guide
Rolls Corporation 
Salt Lake City, UT
10/23
What's in the box?
1 - Made in USA FX953
1 - 15V power supply PN PS27s
1 - This owners manual
FX953 Bad Bass Preamp
Introducing the FX953 “Bad Bass Preamp” pedal – a versatile preamplier pedal designed to repli-
cate the eects of intentionally over or under biasing a preamp to achieve specic desired sonic 
results. Our extensive experience in biasing ampliers and preamps over the years has revealed 
that deviating from the correct biasing circuit can yield striking changes in sound quality.
The FX953 empowers musicians to explore this creative avenue by providing a safe and con-
trolled means to manipulate bias settings without risking damage or unwanted voltage surges 
to their equipment. While initially tailored for bass guitar applications, the FX953 is compatible 
with any guitar, making it a valuable tool for shaping your unique sound.
SPECIFICATIONS
Connectors:                    Inputs:  1/4” 
    Outputs:  Mono - XLR balanced, 1/4” 
Max Output Level:    +10 dBV
Max Gain:                          43 dBv
Phase Shift:    0 deg. 20 Hz - 20 kHz
THD:      < Well a lot..... 1000%
Switch:                                                   Active switch with true bypass.
Power:      15 VDC adapter or 9V battery
Weight:      1.8 lbs
Size:      6.75” x 4” x1.4”
The primary function of this pedal is to intentionally manipulate a circuit by either over-biasing 
or under-biasing it, thereby achieving a desired eect. This manipulation often results in a 
signicant and potentially dramatic impact on both the sound level and distortion. In most in-
stances, this eect is favorable, enhancing the overall sound. However, in certain cases, the bias 
manipulation can be so extreme that it causes the signal to shift to one extreme and become 
nearly non-existent. This outcome is intentionally designed into the pedal to provide users with 
the opportunity to explore the full spectrum of bias shift eects. It’s essential to be aware that 
using this pedal can yield a wide range of outcomes, some highly favorable and others less so. 
Be warned you can get some pretty dramatic out-
comes from using this pedal, some are good and 
some are “Bad Bass Preamp”.
Produktspecifikationer
| Varumärke: | Rolls | 
| Kategori: | Inte kategoriserad | 
| Modell: | FX953 | 
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