Transcript Import Target Curve

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
1
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
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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
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Tools you need
 PC or Mac
– With USB Port
– Wireless Network
– Download Revel LFO from Revel Website
 iOS Device
– iPad or iPhone
Optional
(recommended)
– iOS 6 or later – may use internal mic
– Older units must use external Microphone
– Download AudioTools, Andrew Smith from App Store
– (Studio Six Digital)
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Revel LFO Software on
www.revelspeakers.com
LFO Programming Software includes..
– Low Frequency Optimizer Software
– Manual
– Target Curve
– Test Noise
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Calibration Overview
Three Steps
Step 1
– 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 2
Step 3
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Connect up to four subwoofers
From
Processor
to #1
Out to 3
Or
From
Processor
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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
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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
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Open LFO
Connect to sub #1 - Open Systems Tab
Set Crossover to Flat
Set Delay Units
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Set Subwoofer Delay in Subwoofer Tab
Set Delay by Measurement
to listening position in Inches
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Connect LFO Software to Amplifier (Sub)
Press to Connect to
Subwoofer
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Import Target Curve
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Import Target Curve
 File – Import Curve, Browse to Default LFO Target Curve
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Import Target Curve
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Import Measurement from IOS Device
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Measurement Imported
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Adjust Subwoofer Response Curve to
overlay Target
Lower measured
response here
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Adjust Plot control to better view peaks
and dips
Set Here
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Use Parametric EQ Filters – 1 Filter
First Filter Used
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Two Filters
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8 Filters Later
Measured Response now follows Target Curve
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SAVE to Amplifier
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Filters Downloaded
Represents Filters used on EQ Measured Response Curve
8 Parametric filters adjusted
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When you are almost done
 Check Levels
 Listen
 Save Files to disc
Congratulations you have completed!!
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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!!
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