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Radio Design Labs ST-EQ3
3-Band Audio Equalizer

OUR PART #  STEQ3

Our Price: $97.60
List Price: $130.55
You save 25%! (Low Price Guarantee)
Usually ships in 7-14 business days.
Need it sooner? Call us!

Recommended Accessories

Radio Design Labs' ST-EQ3 is a unique audio equalizer in the STICK-ON product series by Radio Design Labs. The durable bottom adhesive permits quick, permanent mounting nearly anywhere, or use it with RDL's racking accessories. The ST-EQ3 offers the ultimate flexibility in audio bandwidth adjustment, with the big PLUS...you can put it right where you need it.

The ST-EQ3 features a balanced bridging input, which may also be connected unbalanced, if desired. The output driver is 150 ohm balanced, and is intended to drive unbalanced or balanced lines of 150 ohm or higher impedance. Equalization is accomplished by three active circuits, each controlling a separate audio band. These bands were carefully selected to yield a module that works effectively in a wide variety of systems. Each band's center frequency can be either boosted or attenuated by at least 12 dB. The Q of the low and high band equalizers was selected so that those controls can be functionally considered as a total bass band or treble band control. The midrange control is optimized to voice-band adjustment, with the overlap tailored to provide smooth operation for wide band music applications.

NOTE: Radio Design Labs' PS-24AS power supply is NOT included but is required in order to power this product.  Please see the "Accessories" tab or click here for more information on the PS-24AS power supply.

A feature unique to the ST-EQ3 is the CLIP indicating LED. When audio signals are equalized, the boosted level can cause the output circuit to clip. Or alternatively, if prominent frequencies are attenuated, the input is likely to be turned up so that its amplifier can clip. In either event, there is a risk of distortion. Unlike many products which show only input clipping, the ST-EQ3s CLIP indicator flashes if either the input or output stages will clip!

Specifications:

  • Input: 100 kohm balanced or unbalanced bridging; line level
  • Gain: Adjustable OFF to unity (+/- EQ Adj.)
  • THD: less than 0.030%; 0.010% typ. (1 kHz, +4 dBu ref.; flat response)
  • CMRR: greater than 60 dB @ 100 Hz
  • Frequency Response:
    • Into 600 ohm: 20 Hz - 22 kHz (EQ set flat; +/- 0.5 dB)
    • Into bridging load: 10 Hz - 22 kHz (EQ set flat; +/- 0.5 dB)
  • Noise: less than -80 dB below +4 dBu
  • Equalization:
    • Center frequencies:
      • Low Band: 80 Hz
      • Mid Band: 1 kHz
      • High Band: 30 kHz
    • Bandwidth at 3 dB EQ:
      • Low Band: 20 Hz - 300 Hz
      • Mid Band: 200 Hz - 7 kHz
      • High Band: 3 kHz - 30 kHz
  • Power Requirement: 24 to 33 Vdc @ 25 mA, Ground-referenced
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TX or STICK-ON Module fastens to MB-3 which slides into FP-RRA/H track.

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Usually ships in 7-14 business days.
Need it sooner? Call us!

Free Shipping Available

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Usually ships in 7-14 business days.
Need it sooner? Call us!

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Usually ships in 7-14 business days.
Need it sooner? Call us!

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Usually ships in 7-14 business days.
Need it sooner? Call us!

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Radio Design Labs' SR-12A chassis can be mounted in a rack or on a backboard to provide mounting of 12 STICK-ONs.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$64.12List Price: $85.76You save 25%!

Mounting Strip for STICK-ON UnitsRadio Design Labs Smk 12 Mounting Strip for STICK-ON Units

The SMK-12 allows removable surface (up to 6 units) or edge (typically 12, max. 16) mounting of STICK-ON units. They can be fastened to its surface using screws or adhesive foam pads.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$27.45List Price: $36.72You save 25%!

Click to download

Radio Design Labs ST-EQ3
3-Band Audio Equalizer

OUR PART #  STEQ3

Product Information:

Radio Design Labs' ST-EQ3 is a unique audio equalizer in the STICK-ON product series by Radio Design Labs. The durable bottom adhesive permits quick, permanent mounting nearly anywhere, or use it with RDL's racking accessories. The ST-EQ3 offers the ultimate flexibility in audio bandwidth adjustment, with the big PLUS...you can put it right where you need it.

The ST-EQ3 features a balanced bridging input, which may also be connected unbalanced, if desired. The output driver is 150 ohm balanced, and is intended to drive unbalanced or balanced lines of 150 ohm or higher impedance. Equalization is accomplished by three active circuits, each controlling a separate audio band. These bands were carefully selected to yield a module that works effectively in a wide variety of systems. Each band's center frequency can be either boosted or attenuated by at least 12 dB. The Q of the low and high band equalizers was selected so that those controls can be functionally considered as a total bass band or treble band control. The midrange control is optimized to voice-band adjustment, with the overlap tailored to provide smooth operation for wide band music applications.

NOTE: Radio Design Labs' PS-24AS power supply is NOT included but is required in order to power this product.  Please see the "Accessories" tab or click here for more information on the PS-24AS power supply.

A feature unique to the ST-EQ3 is the CLIP indicating LED. When audio signals are equalized, the boosted level can cause the output circuit to clip. Or alternatively, if prominent frequencies are attenuated, the input is likely to be turned up so that its amplifier can clip. In either event, there is a risk of distortion. Unlike many products which show only input clipping, the ST-EQ3s CLIP indicator flashes if either the input or output stages will clip!

Specifications:

  • Input: 100 kohm balanced or unbalanced bridging; line level
  • Gain: Adjustable OFF to unity (+/- EQ Adj.)
  • THD: less than 0.030%; 0.010% typ. (1 kHz, +4 dBu ref.; flat response)
  • CMRR: greater than 60 dB @ 100 Hz
  • Frequency Response:
    • Into 600 ohm: 20 Hz - 22 kHz (EQ set flat; +/- 0.5 dB)
    • Into bridging load: 10 Hz - 22 kHz (EQ set flat; +/- 0.5 dB)
  • Noise: less than -80 dB below +4 dBu
  • Equalization:
    • Center frequencies:
      • Low Band: 80 Hz
      • Mid Band: 1 kHz
      • High Band: 30 kHz
    • Bandwidth at 3 dB EQ:
      • Low Band: 20 Hz - 300 Hz
      • Mid Band: 200 Hz - 7 kHz
      • High Band: 3 kHz - 30 kHz
  • Power Requirement: 24 to 33 Vdc @ 25 mA, Ground-referenced
Stick-On Mounting Rack for 10 UnitsRadio Design Labs SR-10 Stick-On Mounting Rack for 10 Units

Radio Design Labs' STR-10 Racking System holds up to 10 STICK-ON units.  It holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or the top (depending on where the adjustment is located on ...

In Stock

Free Shipping Available

Our Price:$64.12List Price: $85.76You save 25%!

24 VDC 500mA Switching Power SupplyRadio Design Labs PS-24AS 24 VDC 500mA Switching Power Supply

Radio Design Labs' PS-24AS is a 24 Vdc switching power supply with a North American AC plug.  500 mA, dc plug.Specifications: Input: 100 to 240 VACOutput: 24 Vdc, 500 mA (UL, CSA)Dimensions: 1.65" x 2.75" x 1.45" (4.2 x 7 x 3.7 ...

In Stock

Our Price:$22.93List Price: $30.67You save 25%!

Din Rail Adaptor for STICK-ON Radio Design Labs DRA-35S Din Rail Adaptor for STICK-ON

The DRA-35S is a 35 mm DIN rail mounting bracket that provides positive mounting for any RDL STICK-ON® module. The oblique mounting angle of the DRA-35S allows an installer to mount several STICK-ON modules to a single DIN rail. Access to ...

In Stock

Our Price:$19.02List Price: $22.44You save 15%!

Kit to Mount ST, TX Series Modules on FP PanelRadio Design Labs MB3-RDL Kit to Mount ST, TX Series Modules on FP Panel

TX or STICK-ON Module fastens to MB-3 which slides into FP-RRA/H track.

In Stock

Our Price:$5.01List Price: $6.70You save 25%!

Mounting Kit for STICK-ON, TX, or Rack-Up moduleRadio Design Labs MB1-RDL Mounting Kit for STICK-ON, TX, or Rack-Up module

Two mounting brackets mounts a STICK-ON, TX, or Rack-Up module to a flat surface.

In Stock

Our Price:$3.40List Price: $4.00You save 15%!

Rackmount Kit for 10 Stick-On UnitsRadio Design Labs STR-19B Rackmount Kit for 10 Stick-On Units

Radio Design Labs' STR-19B Racking System holds up to 10 STICK-ON unitss in a 19 inch rack and only occupies two rack spaces. The STR-19B holds STICK-ONs at an angle allowing for control adjustment from either the edge of a STICK-ON, or ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Free Shipping Available

Our Price:$159.34List Price: $213.14You save 25%!

Rackmount System for 12 Stick-On UnitsRadio Design Labs STR-19A Rackmount System for 12 Stick-On Units

Radio Design Labs' STR-19A Racking System holds up to 12 STICK-ONs in a 19" rack and only occupies two rack spaces.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Free Shipping Available

Our Price:$134.02List Price: $179.28You save 25%!

Single RACK-UP Mounting Bay Utility ChassisRadio Design Labs UC-1 Single RACK-UP Mounting Bay Utility Chassis

Radio Design Labs' UC-1 is an ULTRASTYLE design tabletop chassis for mounting RDL modules and accessories. The front panel features a single RACK-UP mounting bay. The rear panel has an identical mounting bay and is supplied with matching ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$84.01List Price: $112.37You save 25%!

Mounting Frame for Stick/TXRadio Design Labs SR-4 Mounting Frame for Stick/TX

Radio Design Labs' SR-4 is a universal module chassis that can mount to a backboard, wall or nearly any other support. It provides mounting for 4 STICK-ON power amplifiers or 7 standard STICK-ON modules. TX ™ modules may also be mounted. ...

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$83.21List Price: $111.30You save 25%!

STICK-ON Series 19"W Mounting Rack for up to12 ModulesRadio Design Labs SR-12A STICK-ON Series 19"W Mounting Rack for up to12 Modules

Radio Design Labs' SR-12A chassis can be mounted in a rack or on a backboard to provide mounting of 12 STICK-ONs.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$64.12List Price: $85.76You save 25%!

Mounting Strip for STICK-ON UnitsRadio Design Labs Smk 12 Mounting Strip for STICK-ON Units

The SMK-12 allows removable surface (up to 6 units) or edge (typically 12, max. 16) mounting of STICK-ON units. They can be fastened to its surface using screws or adhesive foam pads.

Usually ships in 7-14 business days.
Need it sooner? Call us!

Our Price:$27.45List Price: $36.72You save 25%!

Click to download

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