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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Professional SRX828SP Portable, Active, Amplified, Powered Dual 18 Inch Subwoofer System. 2000 Watt Peak Crown Amplifier. DJ, PA, Stage. Black

Product ID: 17115971

Details

Audio Output Mode
Surround
Brand
JBL
Connectivity Technology
Neutrik ¼ -
Frequency Response
120 hertz
Speaker Maximum Output Power
4000 watts

⚡2000W Crown DriveCore amp - powerhouse output

🔊141 dB max SPL - fills any venue

🎚️20 parametric EQs - precise sound tuning

Description

🎧 Own the Night with JBL’s Dual 18" Bass Beast

TAILOR YOUR SOUND - 20 parametric EQs and 50 presets let you customize your audio with surgical precision—no compromises.
SEAMLESS INTEGRATION - Neutrik ¼ - XLR inputs/outputs and HiQnet Network Control simplify setup and remote management.
ERGONOMIC VERSATILE - Thoughtful design with ergonomic handles, M10 suspension points, and pole mounts for effortless transport and flexible configurations.
CUTTING EDGE DRIVER TECH - JBL’s patented Differential Drive® ferrite drivers reduce weight and distortion while extending deep bass response.
UNMATCHED POWER CLARITY - 2000W Crown DriveCore amplifier delivers crystal-clear, room-shaking bass that commands attention.

The JBL Professional SRX828SP is a portable, powered dual 18-inch subwoofer system featuring a 2000W Crown DriveCore amplifier, delivering up to 141 dB SPL. Equipped with advanced DSP including 20 parametric EQs and 50 user presets, it offers precise sound customization. Its patented Differential Drive® technology ensures powerful, low-distortion bass. Designed for professional DJs, live events, and PA systems, it includes ergonomic handles, multiple mounting options, and full HiQnet network control for seamless integration and remote management.

Specifications

ASIN	B00SX98VTW
Additional Features	Portable
Age Range Description	Adult
Antenna Location	For Computers, For Smartphones or Tablets
Audio Driver Size	18 inches
Audio Driver Type	Dynamic Driver
Audio Output Mode	Surround
Best Sellers Rank	#34,343 in Musical Instruments ( See Top 100 in Musical Instruments ) #75 in Powered Speaker Cabinets #11,556 in Music Recording Equipment
Brand	JBL
Built-In Media	Powered Subwoofer
Color	Black
Compatible Devices	Smartphone, Tablet, Desktop, Laptop
Compatible with Vehicle Type	Car
Connectivity Protocol	XLR, Neutrik ¼ - XLR input, HiQnet Network Integration
Connectivity Technology	Neutrik ¼ - XLR input; Neutrik XLR Output
Control Method	Touch
Controller Type	Corded Electric
Customer Reviews	4.4 4.4 out of 5 stars (32)
Enclosure Material	Plastic
Frequency Response	120 hertz
Global Trade Identification Number	00691991000751
Is Waterproof	FALSE
Item Dimensions D x W x H	22.6"D x 47.4"W x 26.8"H
Item Type Name	JBL SRX828SP18" Dual Self-PoweredSubwoofer System
Item Weight	145 pounds
Manufacturer	JBL
Model Name	SRX828SP
Model Number	SRX828SP
Mounting Type	Trpod, Floor
Number of Audio Channels	5
Number of Items	1
Power Source	Corded Electric
Series Number	828
Signal-to-Noise Ratio	103 db
Speaker Maximum Output Power	4000 watts
Speaker Size	18 inches
Speaker Type	Subwoofer
Specific Uses For Product	Sound reinforcement and recording
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	18 inches
UPC	691991000751
Unit Count	1 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	Limited
Water Resistance Level	Not Water Resistant
Woofer Diameter	18 inches

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