1. Inleiding
The LD Systems SUB88A active subwoofer features two 8" loudspeakers and delivers 600 W Peak power. The SUB88A is the active version of the SUB88, one of our most popular subwoofers. It is equipped with a 600 Watt (peak) mono amplification module that offers excellent sound and dynamic characteristics. This subwoofer is the ideal partner for our SAT62A active loudspeakers, our SAT42/242/62 passive loudspeakers in combination with an external amplifier (like DJ200), or for all types of satellites if you wish to enrich the sound with deep and powerful bass.

Figuur 1: Voor- en sykant view of the LD Systems SUB 88 A Active Subwoofer.
2. Veiligheidsinstruksies
Lees asseblief hierdie veiligheidsinstruksies sorgvuldig deur voordat u die toestel gebruik. Bewaar hierdie handleiding vir toekomstige verwysing.
- Kragbron: Connect the device only to a power supply of the type described in this manual or marked on the device.
- Ventilasie: Verseker behoorlike ventilasie. Moenie enige ventilasie-openinge blokkeer nie.
- Water en vog: Moenie die toestel aan reën of vog blootstel nie. Moenie voorwerpe gevul met vloeistowwe, soos vase, op die toestel plaas nie.
- Hitte: Moenie die toestel naby hittebronne soos verkoelers, hitteregisters, stowe of ander toerusting plaas nie (insluitend ampversterkers) wat hitte produseer.
- Skoonmaak: Maak slegs skoon met 'n droë lap.
- Diens: Moenie probeer om hierdie produk self te versien nie, aangesien die oopmaak of verwydering van deksels jou kan blootstel aan gevaarlike voltage of ander gevare. Verwys alle diens na gekwalifiseerde dienspersoneel.
- kabels: Beskerm die kragkoord teen geloop of vasgeknyp, veral by proppe, geriefshouers en die punt waar dit uit die apparaat kom.
3. Pakketinhoud
Verifieer dat alle items teenwoordig en in 'n goeie toestand is wanneer u dit uitpak.
- LD Systems SUB 88 A Active Subwoofer
- Instruksie Handleiding
4. Produk verbyview
Familiarize yourself with the various components and controls of your SUB 88 A subwoofer.

Figuur 2: Voorkant view of the subwoofer, showing the bass reflex port.

Figure 3: Rear panel of the subwoofer, displaying input/output connections and controls.

Figuur 4: Close-up view of the rear panel controls, including SUB LEVEL, SUB CROSSOVER, SUB PHASE, and input/output ports.
Rear Panel Controls and Connections:
- Krag skakelaar: Skakel die subwoofer aan of af.
- AC-invoer: Verbind die kragkabel.
- FUSE Houer: Contains the main fuse for protection.
- INPUT (XLR/TRS Combo Jack): Main audio input for connecting to a mixer or audio interface.
- SUB LEVEL Knob: Verstel die algehele uitsetvolume van die subwoofer.
- SUB CROSSOVER Knob (80 Hz - 200 Hz): Sets the upper frequency limit for the subwoofer. Frequencies above this setting will be sent to connected satellite speakers (if applicable).
- SUB PHASE Switch (0°/180°): Adjusts the phase of the subwoofer output to match the phase of your main speakers, preventing phase cancellation.
- LIMIT LED: Illuminates when the internal limiter is active, indicating that the signal is too high.
- SIGNAL LED: Verlig wanneer 'n oudiosein teenwoordig is.
- KRAG-LED: Verlig wanneer die eenheid aangeskakel is.
5. Opstelling
Follow these steps to properly set up your LD Systems SUB 88 A subwoofer.
- Plasing: Position the subwoofer on a stable, flat surface. For optimal bass response, consider placing it in a corner or near a wall. Avoid blocking the bass reflex port.
- Kragverbinding: Ensure the POWER switch is in the OFF position. Connect the supplied power cable to the AC Input on the rear panel and then to a suitable power outlet.
- Klankverbinding:
- Connect the audio output from your mixer, audio interface, or pre-amplifier to the INPUT (XLR/TRS Combo Jack) on the subwoofer's rear panel using a balanced XLR or TRS cable.
- If connecting satellite speakers, ensure they are connected to the appropriate outputs on your mixer/interface, or if your setup allows, route them through the subwoofer's high-pass outputs (if available, though not explicitly listed for this model, typical for subwoofers).
- Aanvanklike instellings:
- Stel die SUB-VLAK knob to its minimum (MIN) position.
- Stel die SUB CROSSOVER knob to an initial setting, typically around 100 Hz for general use. Adjust later for optimal sound.
- Stel die SUB FASE switch to 0°. You may need to adjust this later during calibration.
6. Bedryf
Instructions for operating your LD Systems SUB 88 A subwoofer.
- Krag aan: Once all connections are made, switch the POWER button to the ON position. The POWER LED should illuminate.
- Volume aanpassing: Start playing audio through your system. Slowly increase the SUB-VLAK knob until the desired bass level is achieved. Ensure the LIMIT LED does not illuminate frequently, as this indicates signal clipping.
- Crossover-aanpassing: Pas die SUB CROSSOVER knob to blend the subwoofer's output seamlessly with your main speakers. A lower setting (e.g., 80 Hz) is suitable for larger main speakers, while a higher setting (e.g., 120 Hz or more) may be needed for smaller satellite speakers. Experiment to find the best balance.
- Fase-aanpassing: While playing music with strong bass, toggle the SUB FASE switch between 0° and 180°. Choose the setting that produces the most impactful and defined bass. This compensates for acoustic phase differences between the subwoofer and main speakers due to their placement.
- Monitering: Pay attention to the SIGNAL and LIMIT LEDs. The SIGNAL LED confirms audio input. If the LIMIT LED flashes frequently or stays lit, reduce the input signal level from your source or decrease the SUB LEVEL to prevent distortion and potential damage.
7. Onderhoud
Proper care and maintenance will ensure the longevity of your subwoofer.
- Skoonmaak: Disconnect the power before cleaning. Use a soft, dry cloth to wipe the exterior surfaces. Do not use liquid cleaners, aerosols, or abrasive chemicals.
- Ventilasie: Ensure that the ventilation openings are free from dust and debris. Periodically clean them with a soft brush or vacuum cleaner.
- Berging: If storing the subwoofer for an extended period, keep it in a cool, dry place, away from direct sunlight and extreme temperatures.
- Sekering vervanging: If the unit does not power on, check the fuse in the FUSE holder. Replace it only with a fuse of the same type and rating as specified on the unit. Refer to qualified service personnel if unsure.
8. Probleemoplossing
Verwys na hierdie afdeling vir algemene probleme en hul oplossings.
| Probleem | Moontlike oorsaak | Oplossing |
|---|---|---|
| Geen krag nie | Power cable not connected; Power outlet faulty; Blown fuse. | Check power cable connection; Try a different outlet; Replace fuse (refer to service personnel). |
| Geen klank nie | Input cable not connected; SUB LEVEL too low; Source device not playing audio; Crossover set too low. | Check input cable; Increase SUB LEVEL; Verify source audio; Adjust SUB CROSSOVER. |
| Distorted sound / LIMIT LED constantly on | Input signal too high; SUB LEVEL too high. | Reduce input signal from source; Decrease SUB LEVEL. |
| Swak of modderige bas | Incorrect phase setting; Subwoofer placement; Crossover setting. | Toggle SUB PHASE (0°/180°); Experiment with subwoofer placement; Adjust SUB CROSSOVER. |
9. Spesifikasies
| Produk Tipe | Installasie Subwoofer |
| Model Naam | LDSUB88A |
| Handelsmerk | LD-stelsels |
| Tipe luidspreker | Subwoofer |
| Uitsetkrag (piek) | 600 Watt |
| Verbindingstegnologie | USB (Note: This might be an error in the source data, typically audio inputs are XLR/TRS for professional subwoofers. The image shows XLR/TRS combo jack.) |
| Klankuitvoermodus | Mono |
| Montage tipe | Tafelblad Mount |
| Kleur | Swart |
| Item gewig | 15 kilogram |
| Pakket afmetings | 66.8 x 42.8 x 33.2 cm |
| Krag tipe | Elektries met koord |
| Spesiale kenmerk | Amplifier (Active Subwoofer) |
| Versoenbare toestelle | MP3-speler, slimfoon (Note: This seems like generic data, actual compatibility is with professional audio equipment like mixers, audio interfaces.) |
| Surround Sound Channel-konfigurasie | 2.0 |
10. Waarborg en Ondersteuning
This product comes with a limited warranty. For detailed warranty information and technical support, please refer to the official LD Systems webwebwerf of kontak u plaaslike verspreider. Bewaar u bewys van aankoop vir waarborgeise.
Vir verdere hulp, besoek die LD Systems Store on Amazon.