HH HPS-115 Active Subwoofer User Manual

Introduction

The HH HPS-115 is engineered to deliver unparalleled performance. It features a high-grade Class D amplifier combined with a long-throw 15-inch HH-designed woofer for ultimate low-end performance. Stereo input and high-pass output connections provide optimal crossover separation between full-range and sub frequencies, creating a flawless front-of-house mix. The 'Shape' pre-set boosts sub-harmonic frequencies for a deeper bass response, all housed in a solid, lightweight enclosure with optimal bass porting.

Getting Started

Unpacking and Inspection

Upon unpacking, please check carefully for any signs of damage that may have occurred during transit. If damage is found, notify your dealer immediately. It is advisable to keep the original transit carton for potential future returns.

Voltage Select Switch

Before powering up for the first time, ensure the voltage selector switch is set correctly for your region. Incorrect voltage settings can cause damage to the amplifier. Use a suitable tool to slide the switch to the required setting.

Power Cycle

To prevent damage to your speakers from transient surges during power-up and power-down, follow this sequence:

1. Ensure all system components are turned off.
2. Turn on source equipment (e.g., tape decks, CD players, mixers, effects processors).
3. Turn on the HH HPS-115 amplifier LAST, with its volume control set to minimum. Wait for system parts to stabilize.
4. When turning off, turn down the volume controls on the HH HPS-115 amplifier first, then turn off its power before turning off other equipment.

Safety Warnings

This manual contains important safety information. Warnings are provided in multiple languages, including English, French (FR), German (DE), Spanish (ES), Portuguese (PT), Italian (IT), Chinese (CN), and Korean (KR).

General Safety Precautions:

• ⚠️ [High Voltage] Intended to alert the user to the presence of uninsulated 'Dangerous Voltage' within the product enclosure that may be sufficient to constitute a risk of electrical shock.
• ℹ️ [Important Information] Intended to alert the user of the presence of important operating and maintenance (Servicing) instructions in the literature accompanying the product.
• CAUTION: Risk of electrical shock - DO NOT OPEN. To reduce the risk of electrical shock, do not remove the cover. No user serviceable parts inside. Refer servicing to qualified personnel.
• WARNING: To prevent electrical shock or fire hazard, do not expose this appliance to rain or moisture. Before using this appliance, please read the operating instructions for further warnings.
• If your appliance features a tilting mechanism or a kickback style cabinet, use this design feature with caution. Due to the ease with which the amplifier can be moved between straight and tilted back positions, only use the amplifier on a level, stable surface. DO NOT operate the amplifier on a desk, table, shelf, or otherwise unsuitable non-stable platform.

Noise Exposure Guidance

Exposure to extremely high noise levels may cause permanent hearing loss. Individual susceptibility varies, but prolonged exposure to intense noise can damage hearing. The U.S. Government's Occupational Safety and Health Administration (OSHA) has specified permissible noise level exposures. According to OSHA, exposure exceeding these limits can result in hearing loss. Hearing protectors (earplugs or earmuffs) must be worn when operating this amplification system if exposure exceeds these limits.

General Instructions

• Read and keep these instructions for future reference.
• Heed all warnings and follow all instructions.
• Do not use this apparatus near water.
• Clean only with a dry cloth.
• Do not block any ventilation openings. Install in accordance with manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• An apparatus with Class I construction shall be connected to a mains socket outlet with a protective connection. Do not defeat the safety purpose of the polarized or grounding-type plug.
• Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where it exits from the apparatus.
• Only use attachments/accessories provided by the manufacturer.
• Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
• The mains plug or appliance coupler is used as the disconnect device and shall remain readily operable. Ensure easy access to the mains plug, coupler, and switch. Unplug this apparatus during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as when the power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
• Never break off the ground pin. Connect only to a power supply of the type marked on the unit adjacent to the power supply cord.
• If this product is to be mounted in an equipment rack, rear support should be provided.
• Note for UK only: If the colours of the wires in the mains lead do not correspond with the terminals in your plug, proceed as follows: a) The wire that is coloured green and yellow must be connected to the terminal marked 'E', the earth symbol, or coloured green or green and yellow. b) The wire that is coloured blue must be connected to the terminal marked 'N' or the colour black. c) The wire that is coloured brown must be connected to the terminal marked 'L' or the colour red.
• This electrical apparatus should not be exposed to dripping or splashing, and care should be taken not to place objects containing liquids, such as vases, upon the apparatus.

Rear Panel Control

The rear panel of the HPS-115 features several connections and controls:

• 1. INPUTS: Accept balanced and non-balanced Line level input signals compatible with XLRs. The balanced input provides superior noise rejection when using balanced signals over long cable runs.
• 2. LINK OUT: Output XLRs are hard-wired to their corresponding Input XLRs. These connections can be used to daisy-chain additional HPS cabinets.
• 3. CROSSOVER: Controls the frequency range supplied to the onboard loudspeaker. It does not affect the signal from the High Pass Output connectors.
• 4. CLIP LED: Illuminates when a signal is approaching the clipping point. Reduce the Level/Gain control on connected devices to prevent this. A clipped signal, apart from sounding bad, will not cause damage to the power amplifier because of the on-board limiter.
• 5. POWER LED: Illuminates when the unit is connected to a suitable mains source and the Power Switch is set to 'on'.
• 6. VOLUME: Sets the overall output level of the unit. This control does not affect the audio level from the Left and Right HIGH PASS OUTPUTS.
• 7. HIGH PASS OUTPUTS: With a cut-off frequency of 95Hz, these two balanced connections allow for additional full-range cabinets (such as the HPT-112 or HPT-115) to be added to the system. They are not suitable for connecting additional subwoofers. The signals from the Inputs to the High Pass Outputs are true Stereo and, when combined with other cabinets, allow for a stereo system.
• 8. GROUND LINK: This effectively disconnects the signal ground from the chassis ground and is useful for removing potential earth loops. Earth loop problems can be detected by the presence of hum from the loudspeakers.
• 9. SHAPE Switch: Changes the tonal character of the subwoofer. When depressed, it provides a flat bass response. When engaged, it delivers a boost around 95Hz and a punchy low-end characteristic.
• 10. PHASE Switch: Provides a 180° phase shift at the loudspeaker output and can be used to correct phase problems when multiple cabinets are used. Phase problems are evident in the form of reduced or lack of bass. The phase control does not affect the High Pass Outputs.
• 11. LOGO: The illumination On/Off control for the logo located on the front speaker grille.

Rear Panel Continued

• 12. AIR VENTS: These are critical for the longevity and reliability of the amplifier - DO NOT BLOCK.
• 13. MAINS INLET SOCKET AND FUSE: IEC input for connection of an appropriate mains lead. Only replace the fuse with the type indicated on the rear panel.
• 14. INFORMATION: Safety details.
• 15. VOLTAGE SELECT SWITCH: As previously mentioned, ensure the setting is correct before powering up to prevent damage to the amplifier.
• 16. MAINS SWITCH: Turns the system on and off. Ensure the Volume controls are set to minimum before powering up the unit.
• 17. POLE MOUNT: 35mm for use with HPT-112, HPT-115 or suitable full-range cabinets.
• 18. ILLUMINATED HH LOGO: Front logo illumination control.

Fuse Replacement and Voltage Selection

Important: Switch off and disconnect the power cord before proceeding with fuse replacement or voltage selection.

Fuse Replacement: Slide out the fuse holder tray. Only replace the fuse with the same type and power rating as specified on the rear panel.

Voltage Selection: Using a suitable tool, slide the voltage selector switch to the required operating voltage (100-120V or 220-240V).

Example Setups

The manual provides example setups for connecting the HPS-115 within a sound system:

• Example 1: Stereo setup with mono bass, illustrating connections between HPT cabinets and the HPS-115.
• Example 5: Full stereo setup, detailing connections for multiple HPT cabinets and HPS-115 units to create a comprehensive stereo system.

Block Diagram and Frequency Response

Block Diagram

The block diagram visually represents the internal signal path of the HPS-115, showing how audio signals flow through input stages, processing (high-pass filter, crossover, shape, limiter), and to the various outputs (link, high-pass, and loudspeaker).

Connector Pinout

Standard XLR connector pinout is used for audio connections:

• Male/Female Connectors (Front/Rear View):
• Pin 1: Ground
• Pin 2: Hot (+)
• Pin 3: Cold (-)

Frequency Response

The frequency response graph displays measurements taken in Half Space conditions with the crossover set at 60Hz and 200Hz, illustrating the subwoofer's bass output characteristics across different frequencies.

Specifications

Note: In the interest of continued development, HH reserves the right to amend product specification without prior notification.

For polar plots, EASE modelling files, 2D and 3D drawings files, please check www.hhelectronics.com.