Calibrating Revel Rhythm 2 & Performa 3 Subwoofers Using Revel’s Low Frequency Optimizer (LFO) Software

Rhythm2 Redefines the Category 18” Driver with Advanced Motor using Neodymium Magnet 2000 Watt RMS Amplifier 4000 Watt Peak Low Frequency Optimizer (LFO) Provides Tools for Optimum EQ

B112 and B110 Subs 12” or 10” Woofer 1000 Watt RMS AMP Same Connectivity as Rhythm2 SAME LFO as Rhythm2 EQ and Delay controls for blending into room and main speakers

Four Methods of Implementing Sub Setting the Stage Four Methods of Implementing Sub Connect, set level and play Calibrate Sub Only – Multi channel Calibrate Sub and Measure Mains – Multi-channel or Two channel Calibrate Sub, Calibrate Left and Right – for 2 channel systems Note – all methods are manual calibrations

Tools you need PC or Mac iOS Device Optional (recommended) With USB Port Wireless Network Download Revel LFO from Revel Website iOS Device iPad or iPhone iOS 6 or later – may use internal mic Older units must use external Microphone Download AudioTools, Andrew Smith from App Store (Studio Six Digital) Optional (recommended)

Revel LFO Software on www.revelspeakers.com LFO Programming Software includes.. Low Frequency Optimizer Software Manual Target Curve Test Noise

Three Steps Calibration Overview Set AV Processor Configuration and Set Levels Take Measurements with Audio Tools via IOS Device Use LFO software on laptop to Set EQ, Delay and level controls Step 3 Step 2

Connect up to four subwoofers Out to #2 From Processor Out to 3 Out to #4 Or From Processor

Configure HT Surround Processor Configure Speaker Settings - Set Levels Set Distance (delay) to all speakers Use 80 Hz crossover Set Mains to 75dB Set sub or subs to 80dB Use C Weighting , Slow Response

Take Measurement using Audio Tools Play Downloaded Test Pink Noise With Xover of processor engaged and only subs active Begin Measurement Pause every 15 secs and measure 5 locations Stop, Name, Store then Export measurement We recommend outboard Test Mics

Connect to sub #1 - Open Systems Tab Open LFO Connect to sub #1 - Open Systems Tab Set Crossover to Flat Set Delay Units

Set Subwoofer Delay in Subwoofer Tab Set Delay by Measurement to listening position in Inches

Connect LFO Software to Amplifier (Sub) Press to Connect to Subwoofer

Import Target Curve

Import Target Curve File – Import Curve, Browse to Default LFO Target Curve

Import Target Curve

Import Measurement from IOS Device

Measurement Imported

Adjust Subwoofer Response Curve to overlay Target Lower measured response here

Adjust Plot control to better view peaks and dips Set Here

Use Parametric EQ Filters – 1 Filter First Filter Used

Two Filters

8 Filters Later Measured Response now follows Target Curve

SAVE to Amplifier

Filters Downloaded Represents Filters used on EQ Measured Response Curve 8 Parametric filters adjusted

When you are almost done Check Levels Listen Save Files to disc Congratulations you have completed!!

Review Overall Process Set Up AVR Level Measure LF Room Response Using Spatial Averaging Import Measurements to LFO Determine Corrective EQ Check Polarity Recheck SPL Levels Listen!!