What cables do I need to connect these to my computer?

The MkII series of powered studio monitors features input connectors for XLR or ¼” TRS cables (not included with purchase). If neither of these will connect directly to your computer, try using an adapter with XLR or TRS at one end and a computer-friendly connector at the other end.

How's the bass on this? Is it boomy or muddy?

Realistically, if you are working with contemporary EDM or any electronic music with sounds below 45Hz, you need a sub. Don't get me wrong, the LSR305s are excellent, clearer than the 308s. For material like Country, the bass is sufficient. Even for Rap and EDM you can adjust and place them just right, and estimate how things will sound on a big club or car system. But pairing the LSR305s with e.g. a LSR310S sub gives you the real thing, though sub placement is SO critical it's another rabbit hole.

Do these hiss? I sent back lsr305 due to the hissy tweeters :(

Some do. It’s normal. on the ones that do they are extremely quiet. The “hiss” is only audible while the speakers are not in use and is caused by the internal amp. I wouldn’t call it a hiss as much as it is just static noise from the amps unused electricity. If you don’t like that, maybe these aren’t the ones for you. But I will say that most other powered monitors I have used make this exact same noise. With mine mounted on the wall about 2 feet in front of me and 2 feet above me pointed down at my seat I cannot hear the hiss until ~90%+ volume, And again, exclusively when they are not in use. Hope this helps.

Does this come with cables?

This speaker comes with a power cable, but audio cables are not included. The speaker has one XLR and one 1/4" TRS connector, so you can purchase whatever cables work with your system.

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JBL Professional 305PMkII 5-Inch 2-Way Powered, Active Monitor Speaker for Near Field Music Production, Studio Monitor, Desktop Computer, Hi-Fi Audio. Sold Individually, Black

Product ID: 54562457

Details

Audio Output Mode
Stereo
Brand
JBL
Connectivity Technology
wired
Frequency Response
49 Hz
Speaker Maximum Output Power
7 Watts

🎯Broad sweet spot

🔊82W Class-D power

🎛️Boundary EQ tech

€ 353.05

Duties & taxes included

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Elevate your mix with JBL’s precision power and studio-grade clarity!

BUILT TO LAST - 100-hour full-power tested with a 5-year warranty from an authorized JBL dealer—reliability you can trust.
WIDE SWEET SPOT - Experience consistent, neutral frequency response across a broad listening area—perfect for collaborative studio sessions.
ADAPTIVE ACOUSTICS - Innovative Boundary EQ restores balanced bass when placed near walls or desks, optimizing your workspace sound.
ICONIC JBL IMAGING - Revolutionary Image Control Waveguide ensures pinpoint stereo imaging, so every detail in your mix shines through.
PRECISION POWERHOUSE - 82 watts of custom Class-D amplification delivers crystal-clear, dynamic sound for professional-grade mixing.

The JBL Professional 305PMkII is a 5-inch, 2-way powered studio monitor designed for near-field music production and hi-fi audio. Featuring 82 watts of Class-D amplification, advanced transducers, and patented Boundary EQ technology, it delivers accurate, neutral sound with deep bass and a wide sweet spot. Ideal for professional and aspiring producers, it offers versatile connectivity, durable build quality, and a 5-year warranty from authorized JBL dealers.

Specifications

ASIN	B077N2GQXC
Additional Features	Hi Res Audio
Age Range Description	Adult
Antenna Location	For Audio Production
Audio Driver Size	5 Inches
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo
Best Sellers Rank	#989 in Musical Instruments ( See Top 100 in Musical Instruments ) #8 in Studio Audio Monitors
Brand	JBL
Built-In Media	JBL 305P MkII
Color	Black
Compatible Devices	Home Theatre, Studio
Compatible with Vehicle Type	Car
Connectivity Protocol	Bluetooth
Connectivity Technology	wired
Control Method	Remote
Controller Type	Button
Customer Reviews	4.7 4.7 out of 5 stars (1,740)
Enclosure Material	Acrylonitrile Butadiene Styrene (ABS)
Frequency Response	49 Hz
Global Trade Identification Number	00691991007705
Input Voltage	240 Volts
Is Waterproof	False
Item Dimensions D x W x H	9.9"D x 7.3"W x 11.75"H
Item Type Name	Studio Monitor
Item Weight	10.12 Pounds
MP3 player	No
Manufacturer	JBL Professional
Model Name	305P MkII
Model Number	305PMKII
Mounting Type	Wall Mount, Surface Mount
Number of Audio Channels	2.0
Number of Items	1
Power Source	Corded Electric
Series Number	305
Signal-to-Noise Ratio	75 dB
Speaker Maximum Output Power	7 Watts
Speaker Size	5 Inches
Speaker Type	Monitor
Specific Uses For Product	Home Theatre
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	5 Inches
UPC	691991007798 632317256865 691991007705 094148238548 094148020068
Unit Count	1.0 Count
Warranty Description	This product is sold by an AUTHORIZED JBL Professional NORTH AMERICAN DEALER and includes the official JBL Professional manufacturer’s warranty. The warranty is valid only for products purchased from authorized sellers within the United States. Full details are available on the JBL Professional website.
Warranty Type	5 years
Water Resistance Level	Not Water Resistant
Wireless Technology	No Wireless Communication Technology
Woofer Diameter	5 Inches

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