User guide

Bassbone V2 Preamp

Radial Engineering Ltd.

CHANNEL-1

Think of channel-1 as a ‘straight-through’ channel whereby you will use

the EQ on your amp to set up the tone of your primary bass. Channel-1

is equipped with a control for adjusting the instrument level and a three

position switch for selecting one of two EQ presets.

Start with the LEVEL-1 control set to the 2 o’clock

position and use your instrument ampliﬁ er to set the

overall volume and tone.

After you have dialed-in your traditional bass sound

on your amp, try the EQ-1 presets with your amp.

This switch can introduce one of two carefully crafted

preset EQ curves designed to bring a more modern

character to older vintage bass amps that may not

have the tonal range needed for a particular gig.

CHANNEL-2

Depress the SELECT footswitch to switch to channel-2. Think of

channel-2 as the 'override' channel. This features a powerful passive-

interactive EQ that lets you override the tone settings on your ampliﬁ er

to create an entirely different bass sound.

Start with the LEVEL-2 control at the 2 o’clock position and adjust the

level to match channel-1. Use the three-band EQ to create a different

tonal response from channel-1. Stomp the SELECT footswitch to toggle

between channels and compare sounds.

The three-band EQ can dramatically increase or decrease the amount of

gain depending on the settings. For instance, rolling off low end with the

EQ will reduce the overall gain. Compensate by adjusting the LEVEL-2

gain until it matches channel-1. Once the EQ and level controls are

set, you can toggle between channels without adjusting your ampliﬁ er's

volume or EQ settings.

Channel-2 is also equipped with a 3-position high-

pass ﬁ lter HPF-2 that is used to reduce excessive

low frequency resonance that can cause a bass to

sound muddy and indistinct. The HPF-2 ﬁ lter can be

particularly advantageous for acoustic bass players

who experience resonant feedback when playing live.

The HPF-2 ﬁ lter has a ﬂ at setting (ﬁ lter bypassed) and two settings that

gently roll off bass. The middle setting rolls off low frequencies below

35Hz and the bottom setting below 60Hz.