User Manual

36
Impulse Response (IR)
Impulse Responses are mathematical functions representing the sonic measurements
ofspecicaudiosystems(forHX Stomp XL, acoustic guitar body resonance, or speaker
cabinet and microphone combinations). HX Stomp XL can load and store up to 128
custom or third-party IRs at a time.
TIP: You can get a free pack of IRs right now, available at line6.com/allure, or
check out the ever-growing number of custom Helix presets and IR bundles on
Line 6 Marketplace.
IR Formats
ForallHelix/HXfamilydevices,aswellasHelixNativeplugin,thefollowingIRletypes
are supported.
• Helix Impulse Response (.hir)-This isthe proprietaryLine6IR leformat.
All IRs purchased through the Line 6 Marketplace are of this le type—see
“Marketplace” on page 5.
• WAV (.wav) - Most IR producers and vendors typically oer IRs within the
.wavformat.Itispossibletoimportamonoorstereo.wavleIR,regardless
ofitsbitdepth,length,orsampleratefrequency.Uponimport,IR.wavlesare
automatically converted to 48kHz sample rate, 32-bit, mono, and 2,048 sample
length for Helix. You can use the HX Edit app’s Preferences to set the preferred
behavior for importing Stereo WAV IRs (import the left or right channel data of
thele,oramixofboth).
Loading IRs into HX Stomp XL
LoadingImpulseResponselesintoHX Stomp XL requires connecting to the HX Edit
application in your Mac or Windows computer. The HX Edit application is available as a
free download from line6.com/software.
1. Connect HX Stomp XL to your computer via USB and open the
HX Edit application.
2. Click the IRs tab.
3. Drag one or more IR les from the desktop or any Finder
window directly into the HX Edit application’s IRs list (or use
the HX Edit IR - Import command).
The HX Edit app updates the HX Stomp XL hardware’s IR list automatically. HX
Stomp XL can load and store up to 128 IRs at a time.
Loading an IR in an IR Block
Onceyou’veimportedIRlesintoHX Stomp XL (see the previous section), you can then
put them to use by adding one or more IR blocks into your tone. It is recommended to
use an Amp block preceding an IR block (rather than an Amp+Cab type block).
1. Turn the Upper Knob to select an empty block location to the
right of your Amp block on the signal path.
2. Push the Lower Knob and turn it to select the Impulse Response
category.
3. Push the Lower Knob to select Mono, and push again to select
1024-sample IR.
NOTE:Youmayoptionallychoosethehigherdelity,2048-sampleIR(thereis
a max. limit of one 2048-sample IR block per preset, or two 1024-sample IR
blocks per preset).
4. Turn Knob 1 (IR Select) to choose the IR index (1~128) to utilize
the preferred IR le within your IR library.
Usetheadditionalknobsonpages1-2tone-tunetheIRsettingstotaste—see
the following Settings table.
NOTE: Optionally, you can create a Snapshot assignment on the IR Select
parameter (push and turn Knob 1 to create the Snapshot assignment—see
page 42),whichthenallowsyoutochangebetweendierentIRswithinthe
block per snapshot!