1. Ynlieding en oerview
This manual provides detailed instructions for the installation, operation, and maintenance of your OSD Audio IWS88 In-Wall Subwoofer and SMP800 Class D Mono Amplifier bundle. This system is designed to deliver powerful, deep bass for home theater and audio systems while integrating discreetly into your living space.
De bondel befettet:
- IWS88 In-Wall Subwoofer: A passive subwoofer featuring dual 8-inch drivers, designed for flush installation within a wall. It handles up to 350W of power.
- SMP800 Class D Mono Amplibbener: An 800W amplifier specifically designed to power passive subwoofers. It features Class D efficiency, variable crossover, phase control, auto-on sensing, and versatile input options (RCA/LFE, Speaker Level, 12V Trigger).
For optimal performance and safety, please read this manual thoroughly before installation and use.
2. Safety Ynstruksjes
Please observe the following safety precautions to prevent damage to the unit and ensure user safety:
- Elektryske feiligens: Altyd de amplifier from the power outlet before performing any service or installation. Ensure proper grounding. Do not expose the amplifier foar rein of focht.
- Ventilaasje: De amplifier requires adequate ventilation. Do not block any ventilation openings. Install the amplifier in a location with sufficient airflow.
- Pleatsing: Install the in-wall subwoofer and amplifier in locations free from excessive heat, humidity, dust, or vibration. Keep the amplifier away from direct sunlight and heat sources.
- Wiring: Ensure all wiring connections are secure and correct before powering on the system. Incorrect wiring can cause damage to the equipment.
- Betsjinning: Besykje net dit produkt sels te tsjinjen. Ferwize alle service oan kwalifisearre servicepersoniel.
3. Package Ynhâld
Kontrolearje oft alle items yn it pakket oanwêzich binne:
- OSD Audio IWS88 In-Wall Subwoofer
- OSD Audio SMP800 Class D Mono Amplibbener
- Removable Grille for IWS88 Subwoofer
- Power Cable for SMP800 Amplibbener
- Ynstruksjehânlieding (dit dokumint)
- Mounting Hardware (integrated dog-ear clamps for subwoofer)
4. Opset en ynstallaasje
4.1 In-Wall Subwoofer Installation (IWS88)
- Kies lokaasje: Select a suitable wall location, ensuring no obstructions like electrical wiring, plumbing, or studs are present. Use a stud finder to locate studs and avoid them.
- Iepening snije: Use the provided cutout template (if included, otherwise measure carefully) to mark the opening on the wall. Carefully cut the opening using a drywall saw.
- Rinne sprekkerkabel: Route appropriate gauge speaker wire (e.g., 14-gauge or 12-gauge) from the amplifier location to the subwoofer opening. Leave enough slack for connections.
- Ferbine de sprekkerkabel: Connect the speaker wires to the spring-loaded terminals on the IWS88 subwoofer. Ensure correct polarity (+ to + and - to -).

Ofbylding: Front view of the IWS88 In-Wall Subwoofer with the grille removed, revealing the dual 8-inch drivers and the speaker wire terminals.

Ofbylding: Hoekich view of the IWS88 In-Wall Subwoofer, illustrating its internal components, mounting clamps, and speaker terminals.
- Mount Subwoofer: Carefully insert the subwoofer into the wall opening. Tighten the mounting screws (usually located on the front baffle) which will engage the dog-ear clamps to secure the subwoofer to the drywall. Do not overtighten.
- Grille oanmeitsje: Once the subwoofer is securely mounted, attach the magnetic grille to the front of the subwoofer.

Ofbylding: Front view of the IWS88 In-Wall Subwoofer with the magnetic grille in place, demonstrating its flush and discreet appearance.
4.2 Amplifier Connection (SMP800)
Position the SMP800 amplifier in a well-ventilated area, preferably near your AV receiver or audio source.

Image: Rear panel of the SMP800 Class D Mono Amplifier, highlighting its input and output connections.
- Ferbine audio-ynfier:
- RCA/LFE Input: For most home theater receivers with a dedicated subwoofer output (LFE or Sub Out), connect an RCA cable from the receiver's subwoofer output to the SMP800's LFE input. If your receiver has stereo RCA outputs, use both L and R inputs on the SMP800.
- Sprekkernivo-ynfier: If your receiver does not have a dedicated subwoofer output, connect speaker wires from your receiver's main speaker outputs to the SMP800's Speaker Level Input terminals.
- Connect Subwoofer Output: Connect the speaker wires from the IWS88 in-wall subwoofer to the SMP800's Subwoofer Speaker Output terminals. Ensure correct polarity (+ to + and - to -).

Image: Close-up of the SMP800 amplifier's subwoofer speaker output terminals.

Image: Close-up of the SMP800 amplifier's RCA/LFE inputs and speaker level inputs.
- 12V Trigger (Opsjoneel): If your AV receiver or control system has a 12V trigger output, connect it to the SMP800's 12V Trigger input. This allows the amplifier to power on/off automatically with your main system.
- Power Connection: Connect the supplied power cable to the SMP800 amplifier and then to a suitable AC power outlet. Ensure the AC Voltage Selector switch on the amplifier is ynsteld op de juste voltage for your region (110-120V or 220-240V).
5. Bedriuwsinstruksjes
5.1 Yn-/útskeakelje
- Manual Power: Press the power button on the front panel of the SMP800 amplifier to turn it on or off.
- Auto-On Sensing: As de amplifier's 'MUSIC ON 12V' switch is set to 'MUSIC' and an audio signal is detected on the RCA/LFE or Speaker Level inputs, the amplifier will automatically power on. It will enter standby mode after a period of no audio signal.
- 12V Trigger: If connected, the amplifier will power on and off in sync with your main system.
5.2 Adjusting Controls (SMP800)
The SMP800 amplifier features several controls to optimize subwoofer performance:
- Folume/Generaasje: Adjusts the overall output level of the subwoofer. Start with a low setting and gradually increase until the bass blends well with your main speakers.
- Crossover frekwinsje: This control determines the highest frequency the subwoofer will reproduce. Set it to blend seamlessly with your main speakers. A common starting point is 80Hz-100Hz, but adjust based on your main speakers' low-frequency capabilities.
- Faze kontrôle: Adjusts the phase of the subwoofer output (0° or 180°). Experiment with both settings to find the one that provides the most impactful and coherent bass response in your listening position.
6. Underhâld
To ensure the longevity and optimal performance of your OSD Audio subwoofer and amplifer, folgje dizze ienfâldige ûnderhâldsrjochtlinen:
- Reiniging: Use a soft, dry cloth to clean the surfaces of the amplifier and subwoofer grille. Do not use liquid cleaners, aerosols, or abrasive chemicals, as they may damage the finish or internal components.
- Ventilaasje: Kontrolearje periodyk dat de amplifier's ventilation openings are clear of dust and debris to prevent overheating.
- Ferbinings: Occasionally check all cable connections to ensure they are secure. Loose connections can lead to signal loss or intermittent performance.
- Miljeu: Mije bleatstelling fan de amplifier oan ekstreme temperatueren of fochtigens.
7. Probleemoplossing
If you encounter issues with your OSD Audio subwoofer and amplifier bundle, refer to the following troubleshooting guide:
| Probleem | Mooglike oarsaak | Oplossing |
|---|---|---|
| Gjin lûd út subwoofer |
|
|
| Ferfoarme of ûndúdlike bas |
|
|
| Humming of buzzing lûd |
|
|
| Amplifier not turning on automatically |
|
|
If the problem persists after trying these solutions, please contact OSD Audio customer support.
8. Spesifikaasjes
IWS88 In-Wall Subwoofer
- Type: Passive In-Wall Subwoofer
- Bestjoerders: Dual 8-inch Woofers
- Power Handling: 350 watt
- Impedânsje: 8 ohms
- Frekwinsje antwurd: Refer to product page for detailed specifications.
- Ofmjittings: Refer to product page for detailed dimensions and cutout size.
SMP800 Class D Mono Amplibbener
- Amplibbener Type: Klasse D Mono
- Power Output: 800 Watts (Max)
- Ynputen: RCA/LFE, Speaker Level, 12V Trigger
- Utfier: Subwoofer Speaker Output
- Kontrôles: Variable Crossover, Phase Control (0°/180°), Volume/Gain
- Funksjes: Auto-On Sensing
- AC Voltage: Selectable (110-120V / 220-240V)
- Ofmjittings: Refer to product page for detailed dimensions.
9. Garânsje en stipe
9.1 Warranty Information
OSD Audio products are designed and manufactured to the highest quality standards. This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. The specific terms and duration of the warranty may vary. Please retain your proof of purchase for warranty claims.
The warranty does not cover damage caused by improper installation, accident, misuse, abuse, negligence, unauthorized modification, or normal wear and tear.
9.2 Customer Support
For technical assistance, troubleshooting, or warranty inquiries, please visit the official OSD Audio website or contact their customer support department. Contact information can typically be found on the OSD Audio webside of op 'e produktferpakking.
Before contacting support, please have your product model numbers (IWS88 and SMP800) and a description of the issue ready.