1. Introduction
The RHM K666 is a portable karaoke machine designed for versatile audio entertainment. It features powerful and clear sound output, wireless microphones, and multiple connectivity options, making it suitable for various indoor and outdoor activities.
Equipped with 2x15W tweeters and a 30W subwoofer, the K666 delivers full-range surround stereo sound with rich, deep bass, enhanced by a built-in DSP chip. Its compact size (13.86 x 7.87 x 6.89 inches) and sturdy handle ensure easy portability. A 4400mAh rechargeable battery provides approximately 8 hours of playtime on a 3-hour charge.

Figure 1: RHM K666 Portable Karaoke Machine with wireless microphones.

Figure 2 : Plusview of RHM K666 features and connectivity options.
2. Contenu de la boîte
Veuillez vérifier le contenu du colis à l'ouverture :
- 1x haut-parleur karaoké
- 2 microphones portables sans fil
- 1x Adaptateur secteur
- 1x Câble de chargement
- Câble AUX 1x
- 1x Manuel d'utilisation

Figure 3: All components included in the RHM K666 package.
3. Instructions de configuration
3.1 Charge initiale
Avant la première utilisation, chargez complètement la machine de karaoké et les microphones.
- Branchez l'adaptateur secteur au port DC IN situé à l'arrière de la machine de karaoké.
- Plug the power adapter into a wall outlet. The machine takes approximately 3 hours to fully charge.
- Insert the provided batteries into the wireless microphones. The microphones have a 400mAh rechargeable battery lasting up to 6 hours.
3.2 Power On & Microphone Sync
The microphones are pre-synced with the system for plug-and-play operation.
- Press and hold the power button on the karaoke machine to turn it on.
- Press and hold the power button on each wireless microphone to turn them on. They should automatically connect to the karaoke machine.
Vidéo 1 : Général surview and unboxing of the RHM K666 karaoke machine, demonstrating initial power-on and features.
4. Mode d'emploi
4.1 Options de connectivité
The RHM K666 supports multiple ways to connect your music source:
- Bluetooth : Easily connect your smartphone, tablet, or other Bluetooth-enabled devices.
- 3.5mm Aux In: Use the provided AUX cable to connect devices with a 3.5mm audio output.
- Clé USB: Play music directly from a USB flash drive via the USB port.
- PC: Connect to a computer for audio playback.

Figure 4: Multiple connectivity options for the RHM K666.
4.2 Commandes du microphone
The wireless microphones offer convenient controls directly on the unit:
- Volume du haut-parleur: Adjust the overall output volume of the karaoke machine.
- Volume du micro : Control the volume of your voice through the microphone.
- Écho: Add or reduce echo effect for vocal enhancement.
- Amélioration de la voix : Utilize features like vocal eliminator (VE) to reduce original song vocals.

Figure 5: Wireless microphone with integrated controls.
Video 2: Demonstration of the Echo Effect on the K666 Karaoke Machine.
4.3 Contrôle de la lumière
The karaoke machine features colorful RGB lights that can be controlled via a dedicated button on the unit.
5. Entretien
- Gardez l'appareil propre en l'essuyant avec un chiffon doux et sec.
- Évitez d'exposer l'appareil à des températures extrêmes, à la lumière directe du soleil ou à l'humidité.
- Store the device and microphones in a cool, dry place when not in use.
- Ensure microphones are fully charged before extended storage to maintain battery health.
6. Dépannage
6.1 Microphone Not Working/Charging
- Ensure the microphone is powered on and within 10 feet of the karaoke machine for optimal connection.
- Check if the microphone batteries are correctly inserted and charged.
- If a microphone is not charging, ensure it is properly placed in its charging slot (if applicable) or connected via its charging cable.
Video 3: Solution for RHM K666 Microphone Not Working.
6.2 Aucun son émis
- Verify that the karaoke machine's master volume is turned up.
- Check the volume settings on your connected music source (phone, tablet, PC).
- Ensure the correct input mode (Bluetooth, AUX, USB) is selected on the karaoke machine.
- If using an AUX cable, ensure it is securely connected to both the machine and the audio source.
7. Spécifications
| Fonctionnalité | Détail |
|---|---|
| Marque | RHM |
| Modèle | K666 |
| Poids de l'article | 7.7 livres |
| Dimensions du produit | 14 x 8 x 8 pouces |
| Configuration des haut-parleurs | 2x 15W Tweeters, 1x 30W Subwoofer |
| Puissance de sortie totale | 60 W |
| Type de batterie | Lithium-ion |
| Karaoke Machine Battery Capacity | 4400mAh |
| Karaoke Machine Playtime | Jusqu'à 8 XNUMX heures |
| Capacité de la batterie du microphone | 400mAh |
| Microphone Playtime | Jusqu'à 6 XNUMX heures |
| Connectivité | Bluetooth, 3.5mm Aux In, USB 2.0, PC |
| Caractéristiques spéciales | Portable, Rechargeable, Microphone Controls (Volume, Echo, Voice Enhancement), RGB Lights |
8. Garantie et assistance
For warranty information or technical support, please refer to the contact details provided in your product's packaging or visit the official RHM website. Conservez votre reçu d’achat pour les réclamations au titre de la garantie.





