Does this come with all the necessary cords to connect this to a computer? Is it rca trs or xlr?

It depends on which speakers you order. The 3.5 and 4.5 come with everything necessary, but the 5 and higher definitely do not come with everything you need. Just the speaker and AC adapter.

Is the the Presonus E3.5 woofer speaker cone unprotected? It appears to have no fabric covering as many speakers would have.

Take a piece of t-shirt and bring it back and forth between your face and the monitors.. you will hear that even something like a tshirt of pantyhose, has a considerable effect on the sound projection. Also, having grills on the speaker looks cheap imo..

I am a Motivational Speaker, can I use these with a microphone when speaking to an audience of 75 people?

There are better choices for that -- you want speakers with a built-in mic preamp, and probably higher wattage amplifiers. You may also want folding speaker tripods. I suggest you puchase speakers designed for this, with a tripod screw hole on the bottom, and XLR mic inputs. For example, Bose EONS sound amazing for music as well. You may also wish to purchase a good wireless mic. Think of it as a system. The size of the room and the audience determine the required size and power of speakers.

Do the Eris 4.5 mute themselves when a headphone is connected?

Ideally they should, unless you’re using the Presonus Audiobox (or any other audio interface) and you connect headphones to that. In which case, they won’t mute.

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PreSonus Eris 4.5BT Bluetooth Studio Monitors, Pair — 4.5" inch Powered Bookshelf Speakers, Stereo, Desktop Computer, Near Field Music Production, Audio Mixing Recording

PreSonus Eris 4.5BT Bluetooth Studio Monitors, Pair — 4.5" inch Powered Bookshelf Speakers, Stereo, Desktop Computer, Near Field Music Production, Audio Mixing Recording

Product ID: 688958322

Details

Brand
PreSonus
Speaker maximum output power
50 Watts
Frequency response
20 KHz
Connectivity technology
1/4" TRS 5.0
Audio output mode
Stereo
Mounting type
Shelf Mount

🎧Built-in headphone amp

📶Bluetooth 5.0 wireless

🔊50W Class A/B power

Description

🎶 Elevate your sound game—studio quality meets wireless freedom!

COMPACT YET IMPACTFUL - 4.5-inch woven-composite drivers pack a punch with deep, accurate bass in a sleek, space-saving design.
POWERFUL PRECISION SOUND - 50 watts of Class A/B power delivers crystal-clear audio without distortion, perfect for mixing or immersive gaming.
TAILORED ACOUSTIC CONTROL - High and Low Acoustic Tuning lets you customize sound to your room and ears for a truly personalized listening experience.
PRIVATE LISTENING MADE EASY - Front-panel headphone output with built-in amp lets you switch to private mode instantly—no rewiring needed.
SEAMLESS WIRELESS STREAMING - Bluetooth 5.0 ensures flawless, high-quality wireless audio from any device—cut the cords, not the quality.

The PreSonus Eris 4.5BT are compact 4.5-inch powered studio monitors featuring 50W Class A/B amplification, Bluetooth 5.0 wireless connectivity, and customizable acoustic tuning. Designed for near-field music production, gaming, and multimedia, they offer precise, distortion-free sound with a built-in headphone amp and versatile input options, making them an essential upgrade for any professional or creative workspace.

Specifications

ASIN	B0C88YW1ZR
Antenna Location	Multimedia, Gaming, Studio-Quality Music Production
Audio Driver Type	Dynamic Driver
Audio Output Mode	Stereo
Audio output mode	Stereo
Battery Average Life	40 minutes
Bluetooth Range	100 Metres
Box Contents	1 pair of Eris 4.5BT monitors
Brand	PreSonus
Brand Name	PreSonus
Colour	black
Compatible Devices	Gaming Console
Connectivity Protocol	Bluetooth
Connectivity technology	1/4" TRS, Auxiliary, Bluetooth 5.0, RCA
Control Method	Remote
Controller Type	Button
Customer Package Type	FFP
Customer Reviews	4.5 out of 5 stars 187 Reviews
Enclosure Material	Plastic Metal
Frequency Response	20 KHz
Frequency response	20 KHz
Is Electric	Yes
Is Waterproof	FALSE
Item Dimensions D x W x H	16.3D x 17.8W x 24.1H centimetres
Item Weight	12.6 Pounds
MP3 player	No
Manufacturer	PreSonus
Maximum Speaker Output Power (in watts)	50 Watts
Model Name	Eris 4.5BT
Model Number	Eris 4.5BT
Mounting Type	Shelf Mount
Mounting type	Shelf Mount
Network Connectivity Technology	1/4" TRS, Auxiliary, Bluetooth 5.0, RCA
Number of Audio Channels	2.0
Number of Items	2
Number of Power Levels	1
Power Source	Corded Electric
Product Features	Featuring an integrated headphone output, flexible connection options, Bluetooth 5.0, and easily adjustable high- and low-frequency controls to fine-tune speaker response, Eris 4.5BT powered desktop speakers ensure optimal performance in any environment – from the home studio, to the dorm room, and more. Eris 4.5BTs deliver clear, accurate, studio-quality sound, with a powerful low-end punch and e…
Signal-to-Noise Ratio	74 dB
Speaker Size	4.5 Inches
Speaker Type	Monitor
Speaker maximum output power	50 Watts
Specific Uses For Product	Multimedia, Gaming, Studio-Quality Music Production
Subwoofer Connectivity Technology	Wireless
Subwoofer Speaker Diameter	8 Inches
Tweeter Diameter	1 Inches
UPC	673454011894
Unit Count	2.0 count
Warranty Type	Limited
Water Resistance Level	Water Repellent
Wireless Technology Type	Bluetooth
Woofer Driver Diameter	4.5 Inches

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