Package Includes:

• (1) Alpine R2-W8D4 8” R-Series 350W RMS Subwoofer Dual 4 Ohm Car Audio Sub R2W8D4
• (1) Rockville RRB50 Large and Loud Portable Bluetooth Speaker with LED+Long Battery

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Description:

The next generation of sound performance is here with the new R-Series subwoofers featuring a larger motor structure for more accurate and authoritative bass.

Features:

• New Motor Structure
  The new R-Series subwoofers now feature larger, double-stacked magnets that contribute more motor force for deeper bass and tighter bass control compared to the previous generation.
• Oversized Dust Cap
  The new hybrid poly ceramic composite dust cap ensures rigidity while also providing incredible internal damping (vibration absorption) to smooth out the bass response and reproduce tight bass.
• Increased Accuracy
  Alpine's High Amplitude Multi-Roll (HAMR) Surround Technology allows the cone to efficiently move air while staying cool resulting in incredible accuracy from the subwoofer.
  

Specifications:

• Size: 8"
• Dimensions: 7.64" x 7.64" x 4.56"
• Frequency Response: 30Hz - 200Hz
• Power Range: 150W - 350W RMS
• Power Handling: 350W RMS / 1000W Peak
• Magnet Weight: 56 oz
• Voice Coil Diameter: 40 mm (2.6")

THIELE-SMALL PARAMETERS

• Sensitivity (1W/1m): 83.7 dB
• DC Resistance (Re): 3.6∆ + 3.6∆
• Free Air Resonance (Fs): 43 Hz
• Equivalent Stiffness: 10.5 L
• Mechanical Q (Qms): 7.08
• Electrical Q (Qes): 0.58
• Total Q (Qts): 0.53
• Cone Area (Sd): 201 cm2
• Linear Excursion (Xmax): 12 mm
• Mechanical Travel (Xmech): 52 mm

SEALED BOX RANGE

• Net Internal Volume: 0.15 - 0.45 ft3

RECOMMENDED SEALED BOX

• External Dimensions: 13" x 13" x 5.5"
• Gross Internal Volume: 0.30 ft3
• Net Internal Volume: 0.25 ft3
• D2 - F3, Qtc: 59Hz, 0.73
• D4 - F3, Qtc: 59Hz, 0.72

VENTED BOX RANGE

• Net Internal Volume: 0.25 - 0.7 ft3
• Fb, Tuning: 36-40Hz

RECOMMENDED VENTED BOX

• External Dimensions: 11" x 9.5" x 21"
• Gross Internal Volume: 0.86 ft3
• Vent Area (W x H): 8 in2 (8" x 1")
• Vent Length: 17.5"
• Vent Displacement: 0.13 ft3
• Net Internal Volume (Vb): 0.68 ft3
• D2 - F3, Ripple, Fb: 33Hz, 2.5 dB, 39Hz
• D4 - F3, Ripple, Fb: 32Hz, 3.2 dB, 39Hz

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All about Your RPB50:

How to Set Up Your RPB50:

How To Set Up TWS on your RPB50:

What's in the Box:

• Bluetooth speaker
• USB Type-C charging cable
• 3.5MM to 3.5MM aux cable
• Owner manual

Description:

RPB50 is our extra-large portable speaker with LED. It is a great size because its big enough to get loud and have a balanced sound with great bass but it is still very portable. This item has (2) 3" full range speakers for highs and mids and (2) passive bass radiators for lows. You can also link 2 of these together wirelessly to play in stereo.

LED Light

There are 2 LED rings along with 8 LED modes!

Big Battery!

BUILT IN 18650 7.4V/4000mAh battery can last up to 16 hours at low volume, and up to 4 hours at max volume.

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 translates into true stereo surround sound. If you want amazing sound in your bedroom you can put one of these on each side of your room and it will sound like you have a full surround sound speaker system!

Features:

• Rockville RPB50 Big and Loud Portable Bluetooth Speaker Boombox
• XL size speaker for deep bass frequencies and very loud overall volume
• TWS - True Wireless Stereo Linking of 2 speakers
• RMS Power: 20w x 2
• (2) 3" 4 ohm full range speakers + (2) passive bass radiators for lows
• Dual LED rings with 8 LED modes
• Bluetooth 5.1 chipset
• Built in TF card slot and USB playback (supports cards or sticks up to 32GB)
• Plays: MP2, MP3, WMA, APE, FLAC, AAC, MP4, M4A, WAV, AIF, AIFC audio
• 3.5MM aux input
• Fast Charge Time: 2-3 Hours
• 7.4V/4000mAh battery lasts 16 hours at low volume, and up to 4 hours at max volume
• Battery charges with included Type-C cable
• Frequency Response: 60Hz - 20KHz
• Play, Pause, Skip Forward, Skip Back, Volume Up, Volume Down
• Will control next song, pause, play on popular apps like Pandora, Spotify, and others
• 33 Foot Maximum Bluetooth Range
• The built-in microphone allows you to 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
• Carry Handle
• Product Dimensions (Inches): 10.98" L x 5.2" W x 7" H
• Product Weight: 3.86 lbs
• Color: Black and grey

Owner's manual