Rane – SEQ 30S 30 Band Stereo Graphic Equalizer

General Description

The SEQ 30S uses Short space-saving 20 mm sliders, 30-band equalizer with ultimate stereo accuracy. The single set of faders controls both left and right channels simultaneously, maintaining true stereo tracking and utilizing constant-Q technology. This EQ fills the void for true stereo applications. Unit is accurate and of professional quality capable of precise equalization down to a fraction of a dB. You can expect several advantages from your constant-Q equalizer over conventional designs: moving one slider will not affect neighboring filters as much, so you won’t spend time re-adjusting sliders (we call this “equalizing the equalizer”). You’ll be able to obtain better feedback control without losing sound quality. All sliders maintain smooth, consistent and accurate calibrated control over filter levels, which is especially critical in low-profile equalizer designs. Because of this, the overall EQ adjustment process is significantly easier and more effective. An Input Level control is provided along with a Bypass switch, enabling easy gain comparisons between equalized and unequalized signal. +4 dBu and Overload indicators detect both input and post-EQ levels. Either unit interfaces easily to many types of systems. Use the balanced XLR Inputs and Outputs, or the balanced ¼” TRS Inputs and unbalanced ¼” TS Outputs.

Features

• 30 Bands of Constant-Q Filters on Ganged Stereo Sliders • Extremely Low Noise: 115 dB Dynamic Range • Signal (+4 dBu) and Overload Indicators • ±12 dB Level Control for Optimum Gain Structure • Low Noise Toroid Transformer • Balanced XLR & ¼” Connectors • Internal AC Power Supply Meets European CE Requirements • 20 mm Filter Sliders Control Both Left & Right Channels

Application Information

Constant-Q graphic equalizers arose from the sound professional’s need for greater control with less interaction than previously possible with conventional equalizers. Truth in slider position became a requirement. The curve traced out by the slider positions on constant-Q designs indeed represents the actual changes to the frequency response. On conventional designs they do not. You use a constant-Q graphic the same way you use a conventional graphic. You just get the desired results quicker, with far less after adjustment to the adjacent sliders. Eliminating a phenomena Rane calls “equalizing the equalizer”. The accompanying figures dramatically show the advantages of constant-Q designs.

Architectural Specifications

The graphic equalizer shall be of constant-Q design to minimize interactions between adjacent bands, and contain frequency bands located on standard ISO center frequencies. Each band shall have a bandwidth of 1/3-octave with a boost/ cut range of 12 dB. A detented and positively grounded 0 dB point shall be provided on 20 mm (SEQ 30S) linear sliders with dust dams. A single set of sliders shall control both channels. A rotary overall level control shall be provided with a range from 12 dB of attenuation to 12 dB of gain. The level control shall provide a detented 0 dB center point. The unit shall include +4 dBu and overload indicators detecting both input and post-equalizer levels. The inputs shall be active balanced/unbalanced designs terminated with both XLR and ¼” TRS (tip-ring-sleeve) connectors. The outputs shall have active balanced XLR and unbalanced ¼” TS (tip-sleeve) connectors. RFI filters shall be provided. The unit shall provide a bypass switch. The unit shall be capable of operation by means of its own built-in power supply connected to 120 VAC (230 VAC where applicable) and meet CE requirements. The chassis shall be entirely constructed from cold-rolled steel.