1. Einleitung
Thank you for choosing the Massive Audio GTR64 6.5-inch Dual 4 Ohm Subwoofer. This manual provides essential information for the proper installation, operation, and maintenance of your new subwoofer. Designed for exceptional sound quality and performance, the GTR Series subwoofers are built with durable components to enhance your car audio experience. Please read this manual thoroughly before installation and use to ensure optimal performance and longevity of your product.
2. Hauptmerkmale
The GTR64 subwoofer incorporates advanced design and materials for superior audio reproduction:
- Heavy Gauge Steel Basket: Features industrial texture painting for durability and aesthetic appeal.
- Dual Stacked High Flux Y30 120oz Strontium Ferrite Magnets: Provides powerful motor force for dynamic bass response.
- Dual Impedance / 1.5" Hi-Temp Voice Coil: Manufactured in the USA for reliable performance under demanding conditions.
- Custom High Roll Foam Surround: Designed with the Massive Audio logo, ensuring optimal cone excursion and longevity.
- Textured Non-Pressed Pulp Cone with Resin: Delivers accurate and responsive bass.
- High-Quality Spring Spider: Ensures precise cone movement and stability.
- High-Grade Woven Tinsel Leads: Connects to a custom terminal case with flexible pure copper wire for efficient power transfer.
3. Packungsinhalt
Bitte überprüfen Sie beim Auspacken, ob alle Artikel vorhanden und in gutem Zustand sind:
- 1 x Massive Audio GTR64 6.5-inch Dual 4 Ohm Subwoofer
- Bedienungsanleitung (dieses Dokument)

Image 3.1: The GTR64 subwoofer is securely packaged in a branded box, ensuring protection during transit.
4. Einrichtung und Installation
Eine fachgerechte Installation ist entscheidend für die Leistung und Lebensdauer Ihres Subwoofers. Wir empfehlen, die Installation von einem qualifizierten Fachmann durchführen zu lassen.
4.1 Empfehlungen für Gehäuse
The GTR64 subwoofer can be used in both ported and sealed enclosures. The optimal enclosure type and size will depend on your desired sound characteristics and vehicle acoustics.
- Portierte Box: A recommended ported box measures approximately 7.9" H x 15" D x 8.7" W. Ported enclosures generally provide higher output and deeper bass extension.
- Versiegelte Kiste: A recommended sealed box volume is approximately 0.35 cubic feet. Sealed enclosures typically offer tighter, more accurate bass response.
Consult with an audio specialist or refer to detailed enclosure design guides for precise measurements and tuning for your specific application.
4.2 Kabelverbindungen
The GTR64 features a dual 4 Ohm voice coil. Proper wiring to your amplifier is essential to achieve the desired impedance and maximize performance. Common wiring configurations include:
- Parallelschaltung (2-Ohm-Last): Connect the positive terminals of both voice coils together, and the negative terminals of both voice coils together. Then connect these to the amplifier's positive and negative outputs respectively. This configuration results in a 2 Ohm load, suitable for amplifiers stable at this impedance.
- Reihenschaltung (8-Ohm-Last): Connect the positive terminal of one voice coil to the negative terminal of the other voice coil. Then connect the remaining positive and negative terminals to the amplifier's positive and negative outputs respectively. This configuration results in an 8 Ohm load.
Stellen Sie immer sicher, dass Ihre amplifier is stable at the chosen impedance. Incorrect wiring can damage both the subwoofer and the ampschwerer.

Image 4.1: The GTR64 subwoofer's robust magnet structure and voice coil assembly, designed for high power handling.
5. Bedienungsanleitung
Befolgen Sie nach der Installation diese Richtlinien für einen optimalen Betrieb:
- Erstes Einschalten: After installation, turn on your audio system at a low volume. Gradually increase the volume and check for any distortion or unusual noises.
- Verstärkungseinstellung: Stellen Sie die Verstärkung an Ihrem Gerät ein. amplifier carefully. The gain control is not a volume knob; it matches the output voltage Ihres Hauptgeräts zur Eingangsempfindlichkeit des amplifier. Set it to the lowest point where you achieve maximum clean output without distortion.
- Crossover-Einstellungen: Verwenden Sie den Tiefpassfilter (LPF) an Ihrem amplifier or head unit to send only low frequencies to the subwoofer. A common starting point for the LPF is 80-100 Hz.
- Einlaufzeit: Lassen Sie den Subwoofer vor dem Betrieb mit hoher Lautstärke etwa 10–20 Stunden lang normal hören, um ihn einzuspielen. Dadurch können sich die Aufhängungsteile lockern und ihre optimale Leistung erreichen.
- Avoid Distortion: Always listen for signs of distortion. If you hear distorted sound, reduce the volume immediately. Prolonged operation with distorted signals can damage the subwoofer.

Image 5.1: The GTR64 subwoofer's cone and surround, designed for optimal sound dispersion and durability.
6. Wartung
The GTR64 subwoofer requires minimal maintenance to ensure long-lasting performance:
- Reinigung: Wischen Sie die Membran und die Sicke des Subwoofers mit einem weichen, trockenen Tuch ab. Vermeiden Sie die Verwendung von scharfen Chemikalien oder Scheuermitteln.
- Inspektion: Periodically inspect the subwoofer for any signs of damage to the cone, surround, or wiring connections. Ensure all mounting screws are secure.
- Umfeld: Schützen Sie den Subwoofer vor extremen Temperaturen, direkter Sonneneinstrahlung und Feuchtigkeit.
7. Fehlerbehebung
If you encounter issues with your GTR64 subwoofer, refer to the following common problems and solutions:
| Problem | Mögliche Ursache | Lösung |
|---|---|---|
| Kein Ton |
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| Verzerrter Klang |
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| Schwache Basswiedergabe |
|
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If the problem persists after attempting these solutions, please contact Massive Audio customer support or a certified car audio technician.
8. Spezifikationen
Detailed technical specifications for the Massive Audio GTR64 Subwoofer:
| Besonderheit | Detail |
|---|---|
| Modellname | HIPPOXL124 (Note: Product title refers to GTR64, model name from specs is HIPPOXL124. Assuming GTR64 is the series/marketing name for this model.) |
| Lautsprechertyp | Subwoofer |
| Empfohlene Verwendung | For Car Audio |
| Woofer-Durchmesser | 6.5 Zoll |
| Impedanz | Dual 4 Ohm |
| RMS-Leistungsbereich | 200W-400W (300W ideal) |
| Spitzenleistung | 600 W |
| Schwingspule | 1.5" Hi-Temp, Dual Impedance |
| Magnettyp | Dual Stacked High Flux Y30 120oz Strontium Ferrite |
| Kegelmaterial | Textured Non-Pressed Pulp with Resin |
| Surround-Material | Custom High Roll Foam |
| Korbmaterial | Schwerer Stahl |
| Signal-Rausch-Verhältnis | 70 dB |
| Konnektivitätstechnologie | Verdrahtet |
| Technische Daten | 9 x 9 x 9 Zoll |
| Artikelgewicht | 10.38 Pfund |
| Hersteller | Massive Audio |
| UPC | 623169611100 |
9. Produktvideo
Watch the official Massive Audio promotional video to see the GTR series subwoofers in action and learn more about their design and performance capabilities.
Video 9.1: An official promotional video from Massive Audio showcasing the features and performance of their subwoofers, including design elements and installation examples.
10. Garantie und Support
The Massive Audio GTR64 Subwoofer comes with a Limited Warranty. Please refer to the warranty card included with your product for specific terms and conditions.
For technical support, troubleshooting assistance, or warranty claims, please contact Massive Audio customer service through their official webWebsite oder die Kontaktinformationen, die auf Ihrer Produktverpackung angegeben sind.
Hersteller: Massive Audio
WebWebsite: Visit the Massive Audio Store on Amazon