Combines a high pass filter, low pass filter, and middle equalizer

Product Page

Resonant Filter Equalizer

 

The SV-Pre is a JFET preamplifier that has been modeled after the preamp section of the 70s SVT. Each gain stage has been carefully designed to capture the feel of warmth and breakup found on the original amp. Coupled with a cab sim, you could have the monstrous tone of the classic bass amp stack without the challenge of transporting 250 pounds of gear.

 

In addition to the gain stage design, the EQ and tone switches have been designed to give the same response as those on the original amp. The Bass and Treble controls are the standard James stack configuration, having a shelving response of the lows and highs. The eq is flat when at noon.

 

The middle control uses a simulated inductor to emulate the same frequency response and width of the mid control on the SVT. Instead of three fixed frequencies, the frequency knob continuously varies from 220 to 3k Hz. The mid eq is flat when at noon.

 

The Low toggle switch uses the same circuitry as the three-way Ultra lo switch on the SVT. With the toggle to the right, a 2-pole high pass filter is applied, and allows for a more natural drive tone. With the toggle in the middle position, the low end is unaffected. With the toggle in the left position, a slight scoop is applied, emphasizing deep lows and treble frequencies. The Bright toggle switch applies a treble boost, and is more pronounced at lower gain settings.

 

A Master volume knob has been added on the output to set the overall level. Use the Gain knob to set the desired amount of warmth and overdrive. The Gain knob is equivalent the the Volume knob on the 70s SVT.

 

The pedal requires a 9V DC power supply (not included). Do not exceed 9V as this will damage the pedal. The DC supply should be a standard Boss style connector, center negative polarity. The current draw is approximately 20 mA.

 

Power Supply Notes

The JFETs are sensitive to power supply noise. Ideally you should use a clean power supply that is isolated from other pedals (i.e. not daisy chained). Some switch mode power supplies tend to be more noisy and should be avoided. Use a good quality, isolated supply and the SV-Pre will perform with very low noise.

 

The SV-Pre has a true bypass switch.

 

SV-Pre

The VCA chip used in the Apex has been discontinued by the manufacturer. The Apex is no longer in production. For more information on archived pedals, click on the Archive link at the top of this page.

 

The Apex is a studio quality compressor with excellent control, large headroom, and clean accurate compression. It uses a THAT voltage controlled amplifier (VCA) for the highest fidelity in a small and functional format.

 

The compression ratio ranges from subtle to total limiting. The signal threshold can be set for line level signals or all the way down to the low output instruments. Up to 20 dB of gain allows for making up any volume lost due to compression, or simply boosting your signal above unity.

 

The Apex also has a variable high pass filter placed in the side chain. This feature is great for bass guitars when you don't want the low end to trigger the compression as much as the mids and highs, making the compression naturally follow your playing style. The high pass filter will not affect your audio signal, so don't worry about any loss of low end!

 

The wide ranging compression meter gives you an accurate visual indication of how much compression is actually happening.

 

The pedal requires a 9V DC power supply (not included). The DC supply should be a standard Boss style connector, center negative polarity. The current draw is approximately 60 mA.

 

The Apex has a true bypass switch.

 

Dimensions: 4.77" long x 2.6" wide

Apex VCA Compressor

The Fliptop is a JFET preamplifier that is modeled after the B15 amplifier. The gain staging and EQ sections were carefully designed to give the feel and response of the vintage tube amp, offering a good range of pillowy tone that can be driven to the point of light overdrive if pushed.

 In addition to the James stack EQ and gain staging, the Fliptop adds a Master volume control on the output so you can dial in the amount of drive you want while adjusting the volume as needed.

 The Cab knob is essentially a wet/dry control, allowing you to apply 0 to 100% of the cab tone to the preamplifier output. Dialing in more of the cab response tightens the low end and cuts the high frequencies for a warm, vintage tone. The frequency response is modelled after the 15" cab.

Demo by Yaksonator

Review by Bass Gear Mag

Review by Talk Bass.com

FlipTop

A standard Broughton high pass filter with the bypass switch removed. This design allows a more compact layout, fitting on a single pedal board rail, or even mountable underneath a pedal board.

The high pass filter is a 12 dB per octave low frequency filter. The knob controls the cutoff frequency and ranges continuously from 25 Hz to 190 Hz. It has the same frequency points as the switched version, but it does not have the frequencies printed around the knob.

The stock input impedance is 1MΩ. If you have an acoustic pickup that requires a specialized input impedance, write it in the notes during check-out, and we will accomodate the request at no extra cost. The output impedance is 100Ω. This device will work with active or passive instruments, as well as with other devices such as pedals, preamps, or effects loops.

Produkte

Bau dein Board

Community

Featured Artists

Services

Always On High Pass Filter

Media

Links

Technische Daten

Weitere Pedals von Broughton Audio

Broughton Audio

Resonant Filter Equalizer

Broughton Audio

SV-Pre

Broughton Audio

Apex VCA Compressor

Broughton Audio

FlipTop

Produkte

Bau dein Board

Services

Community