Yamaha STAGEPAS 400i Portable PA System

Model #STAGEPAS 400I

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System Type Powered Mixer with 2 Passive Speakers
Frequency Range 55 Hz to 20 kHz
Weight Total: 39.2 lb (17.8 kg)Speaker: 16.5 lb (7.5 kg)Mixer: 6.1 lb (2.8 kg)
Dimensions (W x H x D) Speaker: 11 x 19 x 10" (289 x 472 x 275 mm)Mixer: 12 x 7 x 5" (308 x 180 x 116 mm)
Power Requirements 100 V - 240 V, 50 Hz/60Hz
Power Consumption Idle: 30 W 1/8 Power: 70 W
Maximum SPL 125 dB SPL Per Speaker


Transducer LF: 1x 8" (20 cm) ConeHF: 1x 1" (2.54 cm) Voice Coil Compression Driver
Pole Socket 1.37 to 1.38" (34.8 to 35.2 mm) with StageLok
Coverage Angle Horizontal x Vertical: 90° x 60°Floor Monitor Angle: 50°
Type Two-Way Bass Reflex Speakers

Packaging Info

Box Dimensions (LxWxH) 27.0 x 22.0 x 15.0"
Package Weight 49.2 lb


Processing Output: Feedback Suppressor, 1-Knob Master EQ
Phantom Power Channels 1/2: 30 V
Amplifier Dynamic Power Rating: 400 W (200 W + 200 W)Continuous Power Rating: 360 W (180 W + 180 W)
EQ Type 1x High Shelf @ 8 kHz1x Low Shelf @ 100 Hz
Total Harmonic Distortion/Noise Speaker Outs: 180 W (10 %)
Output Level Nominal:Monitor Outs: 4 dBuSubwoofer Outs: -3 dBuMaximum Before Clipping:Monitor Outs: 20 dBuSubwoofer Outs: 17 dBuDynamic:Speaker Outs: 200 W
Load Impedance Speaker Outs: 4 Ω SpeakersMonitor Outs: 10 kΩ LinesSubwoofer Outs: 10 kΩ Lines
Output Impedance Speaker Outs: Monitor Outs: 600 ΩSubwoofer Outs: 150 Ω
Outputs 2x 1/4" (6.35 mm) Speaker Outputs1x 1/4" (6.35 mm) Subwoofer Outputs2x 1/4" (6.35 mm) Monitor Outputs
Input Level Nominal:XLR Mic Level: -35 dBuXLR Line Level: -9 dBu1/4" Mic Level: - 29 dBu1/4" Line Level: -3 dBuRCA: -3 dBu1/8" Stereo Mini: -3 dBuMaximum Before Clipping:XLR Mic Level: -10 dBuXLR Line Level: 16 dBu1/4" Mic Level: -4 dBu1/4" Line Level: 22 dBuRCA: 22 dBu1/8" Stereo Mini: 22 dBu
Input Sensitivity XLR Mic Level: - 56 dBuXLR Line Level: -30 dBu1/4" Mic Level: -50 dBu1/4" Line Level: -24 dBuRCA: -24 dBu1/8" Stereo Mini: -24 dBu
Input Impedance XLR: 3 kΩ (Source Impedance: 150 Ω Mics)1/4": 10 kΩ (Source Impedance: 150 Ω Mics)Hi-Z: 1 MΩ (Source Impedance: 10 kΩ Hi-Z)RCA: 10 kΩ1/8" Stereo Mini: 10 kΩ
Inputs 2x XLR-3-31 Mic/Line Inputs2x Combo XLR/TRS Mic/Line Inputs 4x 1/4" (6.35 mm) Inputs2x RCA Inputs1x 1/8" (3.5 mm) Stereo Mini Input1x 1/4" (6.35 mm) Footswitch Input1x USB Port
Channels 8
Functions Channel 4: Hi-Z SwitchChannels 5/6: Stereo/Mono Switch Channels 7/8: Stereo/Mono Switch
User Reviews
B h photo.34921152
2 weeks ago

Purchased this to replace an aging/failing Anchor system. This system sounds Much better and is much more versatile. Only issuewas, the mounting holes for the tripod stands don't fit. Just slightly too small. Would be nice if they were somewhat adjustable.

16 August 2014

Simple and straight forward, my family has loan it to our Church for their weekly meetings. I show them one time how to hook it and they love it.

  • +

    Works great and set up is no problem

  • -

    Should have bought it earlier

2 September 2013

I got this mainly as monitors for my Yamaha mox8 as I was not vey happy with my Behringer ULTRATONE K1800FX 180-Watt 4-Channel PA System. Please don't get me wrong I am not saying Behringer ULTRATONE is bad as it is also a very good system for its price and produces good quality sound.However...

B h photo.34921152
26 March 2015

This system was bought to use in a Large (66'x170'x40') Horse Riding Arena. It has Metal walls, dirt/composite floor, and a metal ceiling with insulated backing. This is a BIG BIG Open Space!

28 February 2015

A few years ago, I purchased a STAGEPAS 300, and I used it about 4 or 5 times a week. I play me bass guitar through it, and also use the other inputs for keyboard and vocals. After hundreds of hours of use, something shook loose, and it quit.

B h photo.34921152
28 August 2014

cant say enough positive things about this system.Easy to use, Check!All in one, Check!Reliable name, Check!Lots of BASS, Check!

B h photo.34921152
13 May 2014

Very easy to set up and use. The high pass filter that kicks in when a sub is plugged in is a real plus. If you're DJing, you'll definitely want a sub but this is very clean for PA without it.

B h photo.34921152
6 November 2013

I've only had these for a little over a week but have used them for two events and have been very pleased with them. They are very compact but put out great sound for their size. I recommend purchasing the rolling bag from Yamaha to protect them, knobs on the mixer are slightly exposed and could be...

19 September 2013

Easy to use, sounds great, lightweight to transport. Having Apple connector to charge unit while in use a great plus.

Product Highlights
  • Dual Speakers & 8-Channel Mixer
  • 400W Total Output
  • Portable Design
  • XLR, Combo XLR/TRS, Hi-Z & RCA Inputs
  • USB Port for Connecting iOS Device
  • 2-Band EQ Per Channel
  • Built-In Reverb & One-Knob Master EQ
  • Stereo Monitor & Subwoofer Outputs
  • Feedback Suppressor
  • StageLok Speaker Stand Connectors
In The Box
  • Yamaha STAGEPAS 400i Portable PA System
  • Cover Panel
  • 2m Power Cord
  • 2 x 6m Speaker Cables
  • 12 x Non-Skid Pads
  • Limited 1-Year Warranty
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