This is listed as a speaker system. How many speakers are included?

One speaker only. You may consider it a system as they are active. They have a Class D amplifier and a DSP built in.

Can I use this for my home stereo, in 14’ by 25’ living room

This is designed more for a 140' by 250' living room.... I'm guessing that, if you have 2 grand to spend on a sub, and have to ask this question... Return the stolen money.

I am planning to buy a sound system for 1000 people venues or a little more mostly out door. What would you guys recomend me tu buy and quantities?

Buy 4 of these, 2 per side and 2 or 4 subs. I would say 4 subs.

What cables (short) are needed connect my phone's audio out to srx835p? should modify anything when providing unbalanced mono input from phone?

First I will say the speakers are killer and destroy they can go so loud perfect for my outside venue. I run mine off of a mixer board (they are not expensive) so I have a Blootooth reciever into the board going into the speakers. I have not tried it but on other speakers like this I simply used a 3.5mm output from my phone with a 3.5mm TRS to two 6.35 mm TRS plugs that go into the speakers. search for example on amazon "UGREEN 3.5mm 1/8" TRS to Dual 6.35mm 1/4" TS Mono Stereo Y-Cable Splitter Cord Compatible for iPhone, iPod, Computer Sound Cards, CD Players, Multimedia Speakers and Home Stereo Systems 15FT" You could also buy a bluetooth reciever/transmitter and plug the 3.5mm into that so you can walk around with your phone and play tunes that way. For example something like this again on amazon (there are many) APEKX Clip Bluetooth Audio Adapter for Headphones, Headset, Speaker, Wireless Receiver with MIC for Hands-Free Call and Music

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Description

🎶 Feel the Beat, Own the Stage!

ERGONOMIC DESIGN - Lightweight and easy to handle, designed for the on-the-go professional.
UNLEASH THE BASS - Experience deep, rich sound with a frequency response that hits as low as 29 Hz.
CUSTOMIZABLE SOUND - 20 parametric EQs and 50 presets for tailored audio experiences.
SEAMLESS INTEGRATION - HiQnet Network Control simplifies setup, letting you focus on the performance.
POWER MEETS PRECISION - 1000W peak power ensures your audio commands attention in any venue.

The JBL Professional SRX818SP is a portable, active subwoofer system featuring a powerful 1000 Watt peak amplifier, delivering a maximum SPL of 135 dB. With a frequency range of 29 Hz to 150 Hz, it provides deep bass and advanced EQ capabilities for precise sound customization. Designed for professional audio applications, it integrates seamlessly with HiQnet Network Control, ensuring effortless setup and operation.

Specifications

Is Electric	Yes
Power Source	Corded Electric
Speaker Maximum Output Power	1000 Watts
Subwoofer Connectivity Technology	Wired
Connectivity Protocol	HiQnet network control
Connectivity Technology	Neutrik ¼ - XLR input; Neutrik XLR Output
Audio Driver Size	18 Inches
Audio Driver Type	Dynamic Driver
Item Weight	87 Pounds
Item Dimensions D x W x H	22.6"D x 26.9"W x 26.9"H
Unit Count	1.0 Count
Number of Audio Channels	2.0
Frequency Response	120 Hz
Compatible with Vehicle Type	Car
Speaker Size	18 Inches
Woofer Diameter	18 Inches
MP3 player	No
Specific Uses For Product	Professional audio applications
Controller Type	Remote Control
Color	Black
Is Waterproof	False
Warranty Type	Full
Control Method	Remote
Audio Output Mode	Stereo
Mounting Type	Tripod, Floor
Speaker Type	Subwoofer
Additional Features	Portable
Recommended Uses For Product	For Live Performances, For DJ Systems, For PA Setups, For Rentals, For Tours, For Permanent Installations
Subwoofer Diameter	18 Inches

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