Every amp needs a cab, and in the modeling world it’s no different! Many say the Cab block is 50% of your core tone along with the Amp. So it’s really important to pick the right cab for the sound you’re seeking. They also say the Cab is actually the “sound” of your tone, while the Amp is the “feel.” However you define it, the Cab is definitely a major part of a great modeler tone.

The Cab block loads Impulse Responses (IRs) which are “captures” of a real guitar cab, or even other gear like acoustic guitar bodies and more. Generally speaking, you only need to use one IR to get a great tone, but you can use 2 panned left and right for a stereo image, or use 2 or more to blend together just like they do in the studio with multiple mics or cabs.

In the early days of IRs, engineers would create them using a “neutral” microphone and rely on the modeler to add mic simulations for classic tons of the SM57, MD421 and more. However, IR creators recently say they get better results using the actual mics to capture the IR, putting the name of the mic they used in the name of the IR. Thus, mic sims aren’t present in many modern day modelers.

There are thousands… if not **millions** of IR files out there today, and using the IR capture on the Axe-Fx II or Axe-Fx III, anyone can create an IR of their own favorite guitar cab.

With so many options, it’s easy to get lost auditioning IR after IR. Though you can always search for the next best thing, remember that we actually want to play guitar at some point too. So do a bit of searching in the Factory Cab lists or any IR packs you purchased, but try to find a stopping point. Differences in IRs can be subtle, and remember you’ll always find a “significant” difference if you search for it 😉

We suggest looking at the names of the IRs and starting with something familiar – maybe a 4×12 with speakers you recognize and a mic you like. Careful: Cab blocks built from scratch usually default to a 1×8 speaker that may not sound the way you want it to, so definitely change it to something more familiar. However, just like with the Amp block, don’t limit yourself only to the things you know. When you do have some time, try some IRs you’re not familiar with at all, keeping the Amp block the same, and just changing the single IR to see its effect on the tone.

Some say its best to audition new IRs with a distorted tone for its harmonic richness. Others say a clean tone is best because it’s more pure. While we tend to go with the distorted tone ourselves, use an Amp and tone you’re familiar with so you can really hear what the Cab is doing when changing IRs.

Axe-Fx III

Blocks Guide Description

The Speaker Cabinet simulator, or Cab block, recreates the tonal characteristics of various different speakers loaded into different cabinets. It also recreates the sound of various mic preamps, room reverb, “air”, “proximity”, and simulates millimeter-resolution “mic distance” for accurate inter-microphone phase effects.
The Cab Block uses impulse responses (IRs). These are “captures” of real speakers in real cabinets created in a studio setting. With 2,048 factory cabs to choose from, plus a “Legacy” bank with all 189 factory cabs from the Axe-Fx II/AX8. Factory content includes selections from the best of today’s 3rd party IR producers and artists.

“User Cab” memories allow you to load our Cab Packs (including any of those compatible with our previous products) or 3rd party IRs. The Axe-Fx III has 2,048 user cab memory locations while the FM3 has 1,024.

The Cab block features a mixer based on our popular Cab-Lab software with up to four different IRs per Cab Block Channel (two on the FM3). This provides the capability to mix and remix IRs on-the-fly as you would do with real mics on a real speaker cabinet.

On the Axe-Fx III, a built-in utility allows you to capture your own speaker IRs —with 16 “Scratchpad” locations for testing IRs without saving them.

List of Types

The Axe-Fx III has over 2000 Factory Cabs/IRs, and there are thousands of IRS available free and for purchase. The list would be far too long to put here, so please refer to the Cab lists in the gear!

Be sure to check out the Axe-Fx Wiki for more details

Axe-Fx III Cab Block Articles

FAQs
Other Topics
Tutorials
FM3

List of Types

The FM3 has over 2000 Factory Cabs/IRs, and there are thousands of IRS available free and for purchase. The list would be far too long to put here, so please refer to the Cab lists in the gear!

Be sure to check out the Axe-Fx Wiki for more details

FM3 Amp Block Articles

FAQs
Other Topics
Tutorials
Firmware
Axe-Fx II

Owner’s Manual Description

The Speaker Cabinet Simulator (“Cab” for short) recreates the tonal characteristics of any number of speaker cabinet configurations. The Axe-Fx II XL/XL+ contains over 150 built-in “factory” cabinet simulations, plus 1024 memory locations for loading custom “User Cab” files. (The Mark II contains 130+ factory and 100 user cabs). The Cab block also offers room and microphone simulations (including sub-millisecond delays), plus basic tone controls.

Factory cabs include custom creations by Fractal Audio Systems, plus selections from 3rd-party libraries by Mikko Logrén of ML Soundlab, Buddy Gill, RedWirez, OwnHammer, TheAmpFactory, and contributions from Fractal Artists John Petrucci, James Santiago, and loudspeaker design engineer Jay Mitchell.

The cab block supports both standard (2048) resolution IRs, and newer UltraResTM format IRs. UltraResTM is a proprietary format that enhances the resolution of an IR without added CPU burden or storage requirements.
Each Axe-Fx II preset can use two fully independent Cab blocks.

List of Types

The Axe-Fx II has over 150 Factory Cabs/IRs, and room for 512 “User” cabs. There are also thousands of IRS available free and for purchase. The list would be far too long to put here, so please refer to the Cab lists in the gear!

Be sure to check out the Axe-Fx Wiki for more details

Axe-Fx II Amp Block Articles

AX8

Owner’s Manual Description

The Speaker Cabinet Simulator or “Cab block” recreates the tonal characteristics of any number of speaker cabs. The AX8 contains over 175 built-in “factory” cabinet simulations, plus 512 memory locations for loading custom “User Cab” files. The Cab block also offers preamp and microphone simulations (including sub- millisecond delays for accurate inter-microphone phasing), plus basic tone controls.

Factory cabs include custom creations by Fractal Audio Systems, plus selections from 3rd-party libraries by ML Sound Labs, Buddy Gill, RedWirez, OwnHammer, TheAmpFactory, and contributions from Fractal Artists John Petrucci, James Santiago, and loudspeaker design engineer Jay Mitchell.

The cab block supports UltraResTM format IRs, as well as the older “Standard” or “High” resolution files. UltraResTM is a proprietary format that enhances resolution without intolerable CPU burden or latency.

List of Types

The AX8 has over 150 Factory Cabs/IRs, and room for 512 “User” cabs. There are also thousands of IRS available free and for purchase. The list would be far too long to put here, so please refer to the Cab lists in the gear!

Be sure to check out the Axe-Fx Wiki for more details

AX8 Amp Block Articles

FAQs
Other Topics
Tutorials
Firmware

AxeFxTutorials.com is not affiliated with Fractal Audio Systems in any way. This is not an official support site of Fractal Audio Systems. We are an independent team who appreciates FAS Gear and likes to help others.

Have we helped you out?

Consider a $ tip ?

 

Click here for our

StreamLabs Tip Page

 

Thank you!

Powered by Restream.io