- (1) Alpine S-W8D4 8" 900 Watt Car Audio Subwoofer DVC Dual 4-Ohm Sub
- (1) Rockville RPB25 40w Portable/Outdoor Bluetooth Speaker w/USB+Aux+Wireless Link
Description of S-W8D4:
The S-Series subwoofers are designed with increased bass output and installation versatility
ADD BASS TO PRACTICALLY ANY VEHICLE
Don’t think you have room for a subwoofer? Think again. The new S-W8D2 and S-W8D4 8” S-Series subwoofers have a shallow mounting depth of just 3-3/4” and can be used in a sealed box enclosure as small as .15 cubic foot. It is perfect for under seats, behind rear bench seats in trucks, or even in some door applications.
The 8” S-Series subwoofers are engineered with an improved voice coil allowing the woofer to benefit from it's power rating of 300 watts.
CUSTOM-STAMPED STEEL FRAME
Each S-Series subwoofer uses a custom-stamped steel frame. These high-strength frames were designed to withstand the rigors of the improved S-Series motor. They have frame leg vents as well as a vented back plate to help cool the subwoofer voice coil and motor parts, plus a shallow design to help fit in smaller spaces.
PUSH-TYPE INSERT TERMINALS WITH DUAL VOICE
COIL JUMPER SYSTEM
The push-type insert terminals help reduce the installation time of the S-Series subwoofers. Just strip the speaker insulation at the wire end, then insert the bare wire into the hole of the spring-loaded push terminal.
STRONTIUM FERRITE DOUBLE-STACKED MAGNETS
The S-Series subwoofers use two strontium ferrite magnets stacked together, for increased motor strength and excursion which ultimately leads to more bass output.
CLEAN, CONCEALED MOUNT GASKET SYSTEM
The S-Series subwoofers have concealed mount gaskets, creating a clean, finished appearance for any vehicle.
All S-Series subwoofers are compatible with optional grilles (sold separately) to provide added protection to the cone. The grilles feature a mesh design with a S-Series logo badge. KTE-8G: For 8” S-Series Subwoofers
- ALPINE S-W8D4 8" 900 Watt Car Audio Subwoofer DVC Dual 4-Ohm Sub
- Speaker Rating:
- Max RMS Power Capacity: 300W RMS
- Peak Power Capacity: 900W Peak Power
- 8” 4Ω+4Ω Subwoofer
- High Strength Custom Steel Frame
- Great complement to V-Power Amplifiers
- Frequency Response: 34Hz - 200Hz
- Mounting Depth 3-3/4”
- Cutout diameter: 6-7/8"
- Recommended Sealed Box: 0.30 cubic foot (gross volume)
- Recommended Vented Box: 0.71 cubic foot (gross volume), 7” x 0.75” vent area, 15.5” vent length
Recommended Enclosure Specifications:
- Minimum Sealed Box Volume 0.15 cubic feet
- Maximum Sealed Box Volume 0.5 cubic feet
- Minimum Ported Box Volume 0.35 cubic feet
- Maximum Ported Box Volume 0.7 cubic feet
- Top-Mount Depth 3-3/4"
- Cutout Diameter 6-7/8"
Video of RPB25:
- RPB25 Bluetooth Speaker
- 3.5MM MP3 Cable
- Micro USB Charging Cable
- String for hanging
- User Manual
- Warranty Card
TWS – True Wireless Stereo
The TWS function allows you to wirelessly connect 2 of these speakers together to give you stereo sound. This will give you a left and right channel which will give you true stereo surround sound. If you want amazing sound in your bedroom you can just put one of these on each side of your room and it will sound like you have a full surround sound speaker system.
The RPB25 by Rockville is the result of many months of engineering. Rockville created a line of Bluetooth speakers in many shapes and sizes. Each model is in a class of its own when compared with anything that looks similar on the market.
We compared this model with many different speakers from famous brand names that sell for $100 and up and the RPB25 is the clear winner. We guarantee you that our speaker is better than any other on the market!
Unique Design with 360 Degrees of Sound Dispersion and True Stereo Sound!
The design for the RPB25 is a unique one. What I love about this speaker is that it can sit vertically on your desk, saving you space. The speaker has a cylinder shape with 360 degree sound dispersion technology. This means the speaker will disperse sound in all directions no matter which way you face the speaker.
This speaker has 2 speakers each on separate channels, which gives you true stereo sound! This is something that other speakers on the market cannot offer!
Each driver has a 42 gram ferrite magnet and rubber surrounds that eliminate distortion. Our drivers are the best in the industry.
Listen At Home Or On-The-Go!
The RPB25 is an extremely rugged speaker. It is made of ABS, rubber, and metal. It is water resistant which makes it perfect for camping, hiking, pool parties, beach parties, and more!
Extreme Power and Sound Quality!
The Rockville RPB25 has an amazing 40 watts of power! What I love most about this is that even when you crank up the volume to 100% you do not hear any distortion at all.
This speaker is driven by (2) built-in 2 inch drivers. Each driver has a ferrite magnet and 42-gram horns. The drivers we use are hands-down better than anything else on the market!
The battery lasts for 10 hours with the music playing at 70% volume. If the volume is lower, it will last even longer! This has a 3.7 Volt 2000 mAH battery. We use only the best quality batteries in our speakers.
Aux/SD/USB/Bluetooth/FM Radio Playback
The RPM25 has tons of listening options. This is more than just a Bluetooth speaker! It also plays audio stored on a USB or SD (up to 32GB). You can plug any audio device into the 3.5MM aux input. This even has a built in FM radio. The Bluetooth range is around 32 feet. The Bluetooth needs to be paired the first time you use it, and then after that it will auto-pair to your phone when you turn the speaker on. Our Bluetooth quick-connect technology pairs in 5 seconds!
Top Build Quality
The enclosure is made of top quality ABS molded plastic and rubber with a protective metal grill. The thickness of our ABS is twice as thick as conventional speakers. This speaker can take a beating. It is water resistant, and resistant to damage from being dropped or thrown on the ground.
Built-in Speakerphone Integration
Another cool thing about our speaker is the built-in microphone. If your phone rings, you can answer the call and talk hands-free using this as a Bluetooth speakerphone.
90 Day Money Back Guarantee
If you are not blown away by how good this speaker is we will take it back and give you all of your money back! We are offering a 90-day money back guarantee. Simply contact us and let us know why you are not happy with it, and as long as you have the box and everything that was included, we will send you a pre-paid shipping label and give you all of your money back!
Tons of Applications
- Bedroom speaker – you can use it to play music in your room. The sound of these will fill a large room.
- Kitchen speaker – with its space-saving vertical design; this is perfect for the kitchen.
- Desk speaker at work or at home – This speaker sounds great on both low and high volume listening environments.
- Portable speaker for pool or beach parties – The durable and water resistant design make this perfect.
- Perfect for use as a conference room speakerphone system.
- TWS True Wireless Stereo allows you to link 2 speakers together wirelessly
- Rockville RPB25 40 Watt Portable/Outdoor Bluetooth Speaker w/USB+SD+Aux In+FM
- 40 watts peak power
- 15 watts continuous RMS
- 360-degree sound dispersion technology
- True 2 channel stereo sound delivers top-notch sound quality
- Battery charges with included USB cable
- 3.7V / 2000 mAH battery supports 10 hours of playback at 70 % volume
- Charge time: 2.5 Hours
- Extremely loud and powerful with industry-leading bass!
- Bluetooth version. 2.1 with EDR (enhanced data rate)
- Bluetooth quick-connect technology pairs with your phone in 5 seconds
- A2DP audio streaming with 32 foot max Bluetooth range
- Automatically remembers and syncs with previously synced devices
- Playback Controls - Play, Pause, Skip Forward, Skip Back, Volume Up, Volume Down
- Will control next song, pause, play on popular apps like Pandora, Spotify, Youtube, and others
- The built-in mic allows you to speak through the device so you can make and receive phone calls hands-free
- Compatible with any Bluetooth devices such as iPad, iPhone, Laptops, Android phone, other cell phones, iPods, other Bluetooth MP3 Players
- Material: ABS, Rubber + metal grille
- Input power Input: DC5V/500mA
- Plays back SD cards up to 32 GB
- Plays USB thumb drives up to 32gB
- 3.5MM aux input (aux cable included)
- Built in FM radio with auto scan
- Dual 2” inch drivers with 42 gram magnet, rubber surrounds, and high excursion
- Handle enables you to carry the speaker easily
- No distortion can be heard even at top volume
- Distortion: Less than 1 %
- Professional voice conformations
- Auto turn off after 15 minutes of no music to conserve battery life
- Frequency Response: 50HZ – 20KHZ
- Signal to noise ratio: 85dB
- Unit weight: 0.84 pounds
- Dimensions of Unit (inches): 2.76” L x 2.68” W x 7.76” H
- Shipping Weight: 1.52 pounds
- Shipping Dimensions (inches): 10” x 4.96” x 4.06”
- 90 Day Money back guarantee!