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Radio Design Labs
STHP3
Dual High Pass Filters Line Le
STHP3
The ST-HP3 is the ideal choice where line-level audio filtering needs to be provided at the input of a power amplifier for protection of public address horns against damage from low frequencies.
The ST-HP3 has one input and two filtered outputs: 300 Hz high pass and 500 Hz high pass. Both the input and output are balanced, and each may be wired unbalanced if required. The input accepts line-level (+4 dBu nominal) audio. The module operates at unity gain (balanced input and output). The two outputs may be used simultaneously.
The ST-HP3 features RDL’s SupplyFlex power input configuration for operation directly from ground-referenced, floating or bipolar 24 Vdc power.
Features:
- Horn Loudspeaker Protection
- Low-Frequency Attenuation below 300 Hz
- Low-Frequency Attenuation below 500 Hz
- Line-Level Input and Outputs
- Filtering Requiring no Field Adjustment
- RDL® SupplyFlex™ Power Input Configuration
Typical Performance:
Input: 20 kO balanced line level (+4 dBu)
Outputs (2): 150 O balanced line level (+4 dBu)
Headroom: > 18 dB
THD+N: < 0.01%
Residual Noise: < 90 dB (referred to +4 dBu)
Insertion Loss: < 2 dB
300 Hz Output:
- Frequency Response: 300 Hz to 30 kHz (+/- 0.5 dB)
- -3 dB Frequency: 225 Hz
500 Hz Output:
- Frequency Response: 500 Hz to 30 kHz (+/- 1.0dB)
- -3 dB Frequency: 450 Hz
Power Requirement: GROUND-REFERENCED or FLOATING, 24 to 33 Vdc @ 30 mA
Our Part # STHP3
 | Radio 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. Item is In Stock and should ship in 1-2 business days. | Our Price:$3.21 |
 | Radio 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. Item is In Stock and should ship in 1-2 business days. | Our Price:$4.74 |
 | Radio Design Labs RC1U Universal Rack Chassis, 3 Units RC-1U Holds Up To 6 RACK-UP Products or 12 STICK-ON Modules. RACK-UPs, STICK-ONs and Accessory Panels May Be Installed in Unlimited Combinations. Item is In Stock and should ship in 1-2 business days. | Our Price:$130.83 |
 | Radio Design Labs RURA3A 19" Rack Adapter, multi The RU-RA3A permits the mounting of five STICK-ON modules together with three RACK-UP modules. If AMS accessories are mounted in the RACK-UP mounting spaces, then up to 10 STICK-ON modules may be secured to the RU-RA3A shelf. Item is In Stock and should ship in 1-2 business days. | Our Price:$59.15 |
 | Radio 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. Item is expected to be available to ship in 2-3 weeks. Need it sooner? Call us! | Our Price:$25.98 |
 | Radio Design Labs SR-10 Stick-On Mounting Rack for 10 Units The 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 the STICK-ON ... Item is In Stock and should ship in 1-2 business days. | Our Price:$60.95 |
 | Radio Design Labs SR12A Stick-On Mounting Rack/Up to12 SR-12A chassis can be mounted in a rack or on a backboard to provide mounting of 12 STICK-ONs. Item is expected to be available to ship in 2-3 weeks. Need it sooner? Call us! | Our Price:$60.95 |
 | Radio Design Labs SR4 Mounting Frame for Stick/TX The 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. There is ... Item is expected to be available to ship in 2-3 weeks. Need it sooner? Call us! | Our Price:$78.86 |
 | Radio Design Labs STR19A Rackmount System for 12 Stick-On Units The STR-19A Racking System holds up to 12 STICK-ONs in a 19 inch rack and only occupies two rack spaces. Item is expected to be available to ship in 2-3 weeks. Need it sooner? Call us! | Our Price:$118.76 |
 | Radio Design Labs STR-19B Rackmount Kit for 10 Stick-On Units The 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 the top ... Item is expected to be available to ship in 2-3 weeks. Need it sooner? Call us! | Our Price:$141.20 |
 | Radio Design Labs UC1 Utility Chassis, Single The 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 filler panels. ... Item is expected to be available to ship in 2-3 weeks. Need it sooner? Call us! | Our Price:$79.77 |
 | 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 ... Item is In Stock and should ship in 1-2 business days. | Our Price:$15.92 |
 | Radio Design Labs DTB-RDL Detachable Terminal Block Use DTB's to quickly detach and reattach wiring harness to STICK-ON units. Item is In Stock and should ship in 1-2 business days. | Our Price:$5.67 |
 | Radio Design Labs PM-1T Pole Mount Tray for RDL Module The PM-1T is a tray that mounts above a projector using a standard (1.5" I.D.) round projector pole or any smaller round or rectangular pole. The tray accommodates up to two FP-PA20 Audio Power Amplifiers (for stereo operation) and two ... Item is expected to be available to ship in 2-3 weeks. Need it sooner? Call us! | Our Price:$76.14 |
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