Tossover™ Using & Applications

This page describes how to use the Tossover. Although simple and straightforward, there are a few hidden functions that may not be immediately visible. To get the most out of the Tossover, we invite you to download the full manual by clicking on the icon at left.

Understanding the signal flow

The Tossover is in fact, a device that combines two filters - wired in series. The first is a low-pass filter or LPF that is used to roll off the highs, while allowing the lows to pass. The second is a high-pass filter or HPF that does the opposite, allowing you to roll off the bass so that the highs can be auditioned.

These filters can be used individually or be combined together to create a band-pass filter. When used this way, depending on your settings, rolling off the low and high frequencies will leave the mid-range intact.

Setting the filter slopes

Both the high-pass and low-pass filter sections may be set with different filter slopes. What this means is that you can apply a 12dB per octave slope to gently roll off bass to eliminate resonance, or you can apply more severe 18dB or 24dB per octave filtering to radically tone down an aggressive guitar track. When using the Tossover as a filter, the more radical the slope, the greater the effect and less natural it will sound.

When using the Tossover as a frequency divider, the more radical the slope - the more 'separation' you will notice between the low and high frequency stems. There are no rules... like a synthesizer; the Tossover is designed for experimentation.

Assigning the output

The Tossover is equipped with a mini-slider switch above the 15-pin card-edge connector that lets you assign the filters to the output. As the two filters are in series, when using an older 500 series power rack, you would set the mini-slider switch towards the 15-pin card-edge (downward) to access the signal via the high-pass filter output so that both filters may be auditioned via the XLR output on your rack. You simply turn on the filter you wish to audition by depressing the ON switch in each filter. Turning them both on creates a band-pass filter.

If you are equipped with a Radial Workhorse, the Tossover's Omniport connector has been implemented as a second output. You can then use the mini-slider switch to determine which filter will be routed to the XLR and which will be sent to the Omniport. This enables you to use both filters independently to create more sophisticated parallel signal paths.

Using the Tossover is mostly a matter of connecting, changing settings and listening. The more you play with it, and the more you experiment by creating various audio paths, the more you will come to appreciate the creative options that are at hand. All it takes is a little imagination and you are on your way!


Using the Tossover to extract bass frequencies

With a Tossover, you can filter out the high frequencies using the low-pass filter and then send this portion or stem of the audio track into other processors to create distinctive effects. This is called frequency dividing. A good example could be splitting a kick drum so that you could accentuate certain bass frequencies using an EQ without affecting the highs. Simply adjust the filter to the desired cut-off point and send the resulting signal into an EQ and compressor. Mix the two signals together to create the final track.

Using the Tossover to extract high frequencies

Extracting high frequencies from a track and processing them separately can be a lot of fun! You could for instance send a vocal track through the Tossover and then process the high frequency stem using a distortion pedal to add grit and character without affecting the mids or lows. You can use this same trick on a snare to add more sizzle to the snap. Balance the effect with the original signal to create the desired effect.

Using both filters in series

By selecting the HPF filter output and depressing the Band-Pass filter switch, you can then turn on both filters to create an overlapping mid range. This is called a band-pass filter. This effect is used to focus the energy in the mid range. Start by rotating the LPF all the way clockwise (5 o'clock) and the HPF all the way counter-clockwise (7 o'clock) to create a wide band. Narrow the band by then adjusting the top and bottom cut-off frequencies. For fun, try changing the filter slope by switching between 12dB, 18dB and 24dB per octave settings to narrow the range. This effect can be used to accentuate a snare for more 'piccolo ring' or may be applied to a lead guitar so that the solo cuts through the mix without taking too much frequency space.

Using both filters in parallel

If you are equipped with a Workhorse, you can use the XLR out to audition the low-pass filter while using the Omniport to hear the high-pass filter output as a separate stem. These two stems can then be processed simultaneously using different effects and dynamic controllers on each. This is called parallel processing. You could for instance take a bass – then EQ and compress the lows while sending the high frequencies into a distortion pedal. This enables you to retain the full bandwidth of the instrument and maximize the dynamics while only adding effects to the highs. How about adding a chorus or flanger to the top end to create a gentle Leslie effect?

Using the Tossover as a low-pass filter

You can also use the Tossover as a simple low pass filter. This could, for instance be used to warm up an overly bright track. Start by rotating the cut-off frequency all the way clockwise, turn the filter on and then slowly turn the knob counter-clockwise to audition the effect. Use the on-off switch to compare the wet & dry sounds or mix with the original to set the balance.

Using the Tossover to clean up tracks

A major problem when recording certain acoustic instruments is low frequency resonance. With the Tossover, you can filter out low frequencies starting at 140Hz. Simply set the frequency cut-off control fully counter-clockwise and then slowly increase the cut-off to where it sounds right. Try changing the slope to see how it affects the overall tone.