St.Rock ReactIR 2 now available! (frequency response graphs included)

[2dor]

Ran the Suhr Reactive Load into the THRU port of the React:IR II and used REW's measurement feature to plot their frequency response:

The Suhr has a slightly higher low resonance bump but overall very similar to the React:IR with the MODE button pushed OUT.

 

[st.Rock]

You also can use internal ToneMatcher to building plots. And save results as IR's.

 

[2dor]

For the folks that have the React:IR II and want to get the unit to sound / feel even closer to a Mesa 4x12 OS Straight cab, you can try the following in the EQ block.

While having a "corrective" IR that covers the delta between the React:IR II's load and your Amp + Cab combination, the EQ gets very close, also works well when using the React:IR II with other amps & frees up the IR block within the unit so that you can freely & quickly swap IRs.

Peak 1dB @ 100 Hz, Q = 3
Peak 1dB @ 613 Hz, Q = 12
Peak 1dB @ 613 Hz, Q = 0.2

This is how the frequency response with the EQ engaged looks like when hooked to my Ceriatone Chupacabra 50W (I can confirm the same holds true for my other 2 amps):

Purple = Mesa 4x12 OS Straight
Orange = React:IR II Mode "IN" with the EQ engaged

This is how the React:IR II looks like with the Mode IN and OUT compared to the same cab & amp head but with the EQ disabled:

Purple = Mesa 4x12 OS Straight
Blue = React:IR II with MODE "In"
Green = React:IR II with MODE "Out"

 

[2dor]

If anybody here's a glutton for punishment, I ran sweeps into the FX Return of the Mesa Badlander 100W at all power ratings (20W, 50W, 100W) in both modes (Bold, Variac) using the following loads:

- React:IR 2 with the Mode button pushed IN
- Mesa 4x12 OS Straight
- Mesa 2x12 Horizontal
- Mesa 4x12 + Mesa 2x12 at the same time

Drag this into Room EQ Wizard (REW) and have at it: https://mega.nz/file/fhQGkCLC#mjQJXtb3OhKgZlBjv21mrO9Hw32Nme333_ReFXPTFq4

 

[2dor]

Use these IRs to match the frequency response of the ReactIR2 to the Mesa2x12, Mesa4x12 and Mesa stack (2x12 together with 4x12) at all power ratings in both BOLD and VARIAC modes:

949.5 KB file on MEGA

mega.nz

 

[Orvillain]

If anybody here's a glutton for punishment, I ran sweeps into the FX Return of the Mesa Badlander 100W at all power ratings (20W, 50W, 100W) in both modes (Bold, Variac) using the following loads:

- React:IR 2 with the Mode button pushed IN
- Mesa 4x12 OS Straight
- Mesa 2x12 Horizontal
- Mesa 4x12 + Mesa 2x12 at the same time

View attachment 31804

Drag this into Room EQ Wizard (REW) and have at it: https://mega.nz/file/fhQGkCLC#mjQJXtb3OhKgZlBjv21mrO9Hw32Nme333_ReFXPTFq4

That's interesting. The high frequency shelves all seem quite polite here, not as large as I'd expect. Was the presence on the amp rolled down a bit or something?

 

[2dor]

That's interesting. The high frequency shelves all seem quite polite here, not as large as I'd expect. Was the presence on the amp rolled down a bit or something?

I had the Presence smack at noon before running all the sweeps; never touched it during the process.

 

[2dor]

@st.Rock introduced 0.1 dB increments in the EQ section of the React:IR 2 - very, very useful to have!

st.Rock REACT:IR II Wishlist & SW / FW revisions

Hey there, so here are my curves. These curves are intended to make St Rock REACT:IR II (Mode Button pushed IN) sound like the 1960AV, all using the EVH 5150III 100 Watt Ivory with Presence at 7. The dB number is the signal strength which I sent the signal out of REAPER. So -30dB was super...

www.thegearpage.net

 

[st.Rock]

New version of software is released - 1.51
Included all beta updates since 1.36.
Auto fix of EQ settings to support legacy settings

What's new in 1.51 :

Critical update!
- Many Improvements
- Bug fixes
- MIDI : Sync, Clock etc
- Modulations : improvements
- Reverb: fixes
- IR : serial mode.
- EQ : changed Gain step to 0.1dB
- OSX : fix crash the app on previous version of OS.
- Added new bugs.

 

[Humbug]

- Added new bugs.

You are now my favorite company of all time.