Vendor: DiamondBoxx

L3 300 Watts RMS 8.5 inch DVC woofers

SKU: Model_L3
Regular price $ 899.00 Sale price $ 899.00 Regular price $ 999.00
Sale 10.01% $ 100.00 (10.01%)
Aluminum Color Black Anodized
Battery Size 231Wh
In stock: 13

Loud Clear Wireless Sound Anywhere You Need It

Our most popular model, loud clear sound with huge bass in a more portable package size than our XL3

Wireless True Stereo Sound.  Dual 8.5" DVC woofers and 4" bass port for bass you can feel as well as hear.  120dB loud. Anywhere, anytime, no electricity needed.

With its built-in 6 channel Class A/B hi-fi 300 Watt RMS (600W Max) amplifier in a tri-amped arrangement with active crossovers it provides the best sound possible in the lightest package with the longest battery life. 

With its massive aluminum front panel serving as the amplifier's heatsink, it is made to play FULL BLAST all day on a hot day without skipping a beat.

The L3 is the biggest bang for the buck.  But don't take our word for it, check out this review by Flossy Carter

The Specifications 

Size- 23 x 14.5 x 9.5 inches 

Bluetooth- Bluetooth 5.1 aptX HD  

Woofers- Dual 8.5 inch Aluminum Cone 

Tweeters- 1 inch Titanium Dome 

Amplifier Power- 300 Watts RMS , Max 600W 

Frequency Response- 38Hz - 22kHz  @+/ -3dB 

Peak SPL 120dB @ 1 meter 

Weight- 32lbs 

Internal Battery- Lithium Ion 231 Wh, protected

Max Voltage- 16.8V 

Play time on single charge (231Wh battery)  5-20 hours

Play time on single charge (300Wh battery)  6.5-26 hours

Play time on single charge (462Wh battery)  10-40 hours

Play time on single charge (600Wh battery)  13-52 hours

Battery Life- Over 1000 recharge cycles (all sizes)

0% - 100% charge time with 4A charger (231Wh battery) 4 hours

0% - 100% charge time with 4A charger (300Wh battery) 6 hours

0% - 100% charge time with 4A charger (462Wh battery) 8 hours

0% - 100% charge time with 4A charger (600Wh battery) 12 hours

The L3 can play music while charging.  7A fast charger upgrade available.


Included Items 

DiamondBoxx Model L3 

Lithium Ion Battery Charger 

3.5 mm stereo audio cable 

User manual 

The Fun 

Proudly Made in USA   


Returns are accepted within 14 days of receipt of product. Product must be returned in NEW condition.  Customer is responsible for shipping charges and insurance in sending the product to DiamondBoxx.

L3 User Manual

Free Shipping in Cont. US
Made Eco Friendly
Loud Clear Undistorted
Full Spectrum Stereo Sound


Customer Reviews

Based on 45 reviews
Justin Langston
Nice speaker but..

I received the last cherry l3 they had in stock but was disappointed in the finish there’s definitely appearance issues that’s noticeable on all corners hopefully there’s someway to fix it

Joseph Carpio
Joe from Connecticut

Received my Diamond Box and was immediately blown away.The look (I was luckily able to get it in cherry red before they discontinued the powder coding) The sound quality was amazing and the clarity was incredible.Like Floosy Carter states in his review take that 1000.dollars and get yourself one .Thank you DiamondBoxx you have a fan for life.

Disappointed with L3

I have had an XL2 for four years now and I thought the L3 would be a cool addition. Unfortunately the L3 was a big disappointment. The L3 has very little bass out put and if you turn up the bass knob it will distort like crazy and really sound like crap. They actually mention this might happen if the bass is turned up and you play it at high volume. I can confirm it will happen and if you have bass heavy music playing it will sound like trash. Now days Diamondboxx has solid competition from company’s like JBL and Soundbox. I actually compared the L3 to the JBL 110 I have and I found the JBL to actually sound better with some music. The JBL definitely has better bass output. So yes, I will be sending back my L3 and I have to advise strongly against this speaker from Diamondboxx. It is such a shame they sell this product at $999. It simply is not worth the money. The L3 needs a complete redesign to be competitive with today’s market.

donta harris
The sound I've been looking for !

I've been watching this for a few years and finally decided to get the L3... Now I'm waiting on my second one! I can't wait to them in true wireless stereo! one sounded unbelievable by itself! that low end bass shakes you and your whole house and the highs are crystal clear with no distortion all the way up! It's worth every penny !


It’s booming and great