Helix Cab and IR Pairings: The Reference Table for Every Amp Model

Start Here: The three things that determine whether a Helix amp model sounds right:

1. The IR matches the amp's character — bright amps need darker cabs; dark amps need cabs that open them up
2. The mic position is set correctly — center vs. edge and distance dramatically affect frequency response
3. The EQ correction is applied — most amp + IR combinations need a small corrective cut somewhere

The table below is organized by amp family. Each entry includes the amp model name as it appears in HX Edit, the real amp it's based on, the recommended cab or IR family, mic starting position, and common EQ correction.

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How to Use This Guide

A few things to understand before the table:

Stock cabs vs. third-party IRs: The stock Helix cabs are usable, and some of them are genuinely good. Third-party IRs from Ownhammer, Celestion, and York Audio are more accurate to the real cabs they're modeled on and tend to have better high-frequency behavior. For this guide, I'll recommend by cab type — you can use stock or third-party, and I'll note where it specifically matters.

Mic position: The Helix lets you choose microphone type and position. The two primary variables are center vs. edge (how close to the center of the speaker cone you place the virtual mic) and distance (close vs. 3–4 inches away). Center position = brighter, more present, more transient detail. Edge position = darker, more body, less attack. I'll specify which position suits each pairing as a starting point.

EQ corrections: Almost every amp + IR combination benefits from a small high-frequency cut around 4–8kHz to remove digital fizz, and a small low-mid cut around 200–300Hz to clear up mud. I'll be specific where other corrections are consistently needed.

This is a starting point, not a fixed truth. These pairings work on my Quad Cortex running identical amp models and translated well to Helix in testing. Your guitar, your playing, and your monitoring environment will change what sounds right. Use this as a structured starting point, not a finished result.

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British Amps

Brit Plexi (1959 Super Lead) and Brit Brit (JCM800)

The Plexi models want a mid-voiced cab — the 4x12 with Greenback-style speakers is the classic pairing, and it's classic because it works. The Greenback's resonance peak around 2.5–3kHz fills in the frequency range where the Plexi's output transformer has a natural softness.

Amp Model	Real Amp	Recommended Cab	Mic Position	EQ Correction
Brit Plexi Nrm	Marshall 1959SLP	4x12 Greenback (Celestion G12M)	Edge, close	Cut 5–6kHz by 2–3dB
Brit Plexi Brt	Marshall 1959SLP (bright input)	4x12 Greenback	Center, close	Cut 5–7kHz by 3dB
Brit 2204	Marshall JCM800	4x12 Greenback or V30	Edge, close	Cut 4–5kHz by 2dB; boost 400Hz by 1dB
Brit J45 Nrm	Marshall JMP 45W	2x12 Greenback	Edge, 2–3in away	Cut 6kHz by 2dB

Notes on the Plexi models: The Brit Plexi Brt (bright input) has a lot of energy above 5kHz that sounds correct on the real amp when the guitar's input impedance is interacting with the amp's front end — but that interaction is absent in the modeler. The cut above 5kHz corrects for this. If you're hearing ice-pick treble on the Brit Plexi Brt, this is why.

Vox-Style Models

Amp Model	Real Amp	Recommended Cab	Mic Position	EQ Correction
A30 Fawn Nrm	Vox AC30 (Normal channel)	2x12 Alnico Blue	Center, close	Slight cut at 3kHz if bright; no cut often needed
A30 Fawn Brt	Vox AC30 (Brilliant channel)	2x12 Alnico Blue	Edge, close	Cut 6–7kHz by 2dB
AC Boost	Vox AC15 with boost	1x12 Alnico Blue	Center, close	Usually none — this model is naturally well-voiced

Notes on Vox models: The Alnico Blue cab is the essential pairing for the AC30 models. A Greenback cab with the Vox models produces a sound that technically works but loses the chime character — the top-end silk that defines the AC30's contribution to clean tones. If you don't have a Celestion Alnico Blue IR, the York Audio CA-15 pack is an accurate substitute. The AC Boost model is the most naturally voiced Vox model in the Helix — it needs the least EQ intervention of any model in this table.

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American Amps

Fender Models

Amp Model	Real Amp	Recommended Cab	Mic Position	EQ Correction
US Deluxe Nrm	Fender Deluxe Reverb	1x12 Jensen C12N	Edge, close	Cut 200Hz by 1–2dB if muddy
US Deluxe Vib	Fender Deluxe Reverb (vibrato channel)	1x12 Jensen C12N	Center, 2in away	Cut 200Hz by 1dB
US Double Nrm	Fender Twin Reverb	2x12 Jensen C12N	Center, close	Cut 300Hz by 1–2dB; cut 8kHz by 1dB
US Blackface 'lux	Fender Princeton Reverb	1x10 Jensen P10R	Edge, close	Usually none at low gain; cut 200Hz by 1dB at higher gain

Notes on Fender models: The Jensen C12N pairing with the Deluxe Reverb models is reliable and consistent. The key insight with Fender models specifically is that the original amps were never scooped at the mids — the "Fender clean" sound that most players chase has a full midrange. Don't EQ the mids out of the Helix Fender models. The low-mid cut around 200–300Hz is for cleaning up cab boom, not hollowing out the midrange.

The US Double Nrm (Twin Reverb) is the most difficult Fender model to IR-match because the real Twin has a very specific low-frequency resonance from its 2x12 open-back design. Closed-back cabs with this model will sound thicker and less airy than the real amp. If you have an open-back 2x12 IR, use it — the result is much closer.

Mesa/Boogie and High-Gain American

Amp Model	Real Amp	Recommended Cab	Mic Position	EQ Correction
Cali Recti-Silver	Mesa Boogie Dual Rectifier	4x12 Mesa Oversized (V30)	Edge, close	Cut 5–6kHz by 3dB; cut 150Hz by 1–2dB
Cali Recti-Orange	Mesa Boogie Dual Rectifier (Orange channel)	4x12 Mesa Oversized (V30)	Edge, close	Cut 5kHz by 4dB; boost 700Hz by 1dB for mid presence
Cali IV Rhythm 1	Mesa Boogie Mark IV	1x12 Mesa Thiele (V30)	Center, close	Cut 4kHz by 2dB
Line 6 Badonk	Original model (no real amp reference)	4x12 V30	Edge, close	Cut 5kHz by 3dB; this model is naturally scooped

Notes on Mesa models: The Rectifier models have more energy in the 4–6kHz range than most players want. This is accurate to the real amp — the Dual Rectifier can be bright and aggressive in the high-mids — but it becomes fatiguing over extended playing. The cuts listed above represent a starting point for a more mix-ready sound. Don't over-correct: cutting too much 5kHz with a Rectifier model produces a dark, tubby tone that sits behind guitars in a mix.

The V30 speaker pairing is non-negotiable for Rectifier models. It's the combination Mesa used for the sounds these models are based on. Greenbacks with a Rectifier model produce a midrange buildup that's difficult to EQ out.

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Boutique and Clean Amps

Amp Model	Real Amp	Recommended Cab	Mic Position	EQ Correction
Cartographer	Carr Rambler	1x12 Alnico Gold	Center, close	Usually none — model is well-voiced from the factory
Jumbo	Trainwreck Liverpool	4x12 Greenback	Center, close	Cut 2–3kHz by 1dB if the British jangle gets harsh
Archetype: Cory Wong	Fender Blackface into clean IR	See below	See below	See below

Notes on boutique models: The Archetype: Cory Wong style clean tones deserve a specific note: if you're running this kind of clean model and want maximum funk-clean transparency, use the flattest possible IR — the Celestion F12-X200 "flat" response IR is designed for exactly this. It removes the cab character entirely and lets the amp model breathe. Pair with a gentle high-cut around 8kHz and you're close to the clean direct-to-console sound.

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Global EQ Settings That Help Every Amp

Regardless of which amp model you choose, two global EQ moves help almost every preset:

High-frequency shelf: A gentle shelf cut starting at 6–7kHz, 2–3dB of reduction. This removes digital fizz that accumulates in the modeler's signal chain. It's the most common recommendation in the Helix community for a reason — it works. Don't overdo it or you'll lose air and presence.

Low-cut on the cab block: Most IR and cab blocks in the Helix allow a low-cut filter. Setting this at 80–100Hz removes subsonic content that doesn't contribute to guitar tone but can interact badly with subwoofers and cause low-frequency issues in a PA. Apply this by default.

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The Two Most Common IR Pairing Mistakes

1. Using a 4x12 IR with a single-channel combo amp model. Combo amp models (the Deluxe Reverb, Princeton, AC15) were voiced with their own internal speakers. Pairing them with a 4x12 IR produces a physically accurate sound of running a combo's output into a 4x12 — which real players do — but it changes the character significantly. For single-channel combo accuracy, use a 1x12 or 2x12 IR.

2. Using a Greenback IR with every high-gain amp. The Greenback has a pronounced midrange peak around 2.5–3kHz that's essential for Plexi tones and adds character to JCM800 tones. For modern high-gain — Rectifier models, EVH models, any of the scooped-midrange designs — the Greenback's mid peak creates a honky, nasal quality that doesn't work. Use V30 or a Mesa-specific IR for these models.

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FAQ

Do I need third-party IRs or are the stock Helix cabs good enough? The stock cabs are usable — some are genuinely good, especially the Greenback options. Third-party IRs from Ownhammer or York Audio are typically more accurate and have better high-frequency behavior. The difference is most audible in the 4–8kHz range and in how the IR responds to different mic positions. If you're recording seriously, third-party IRs are worth the cost.

Should I use the dual-cab option in Helix? Sometimes. Blending two cabs — typically a Greenback and a V30 at around 60/40 — is a legitimate studio technique and many commercial sounds use this approach. The Greenback's upper-mid presence blends with the V30's low-mid warmth. Start with two versions of the same cab, then experiment with mixing cab types.

Does mic position matter as much as cab choice? Yes. Moving the mic from center to edge of the same cab IR often changes the sound as much as switching to a different cab. Center = brighter and more detailed; edge = darker with more body. Try edge position first on high-gain patches and center position first on clean or low-gain patches.

Which IR pack should I buy first? York Audio makes a consistent, well-priced collection. Their British packs (Greenback, V30) are especially good. If budget is a consideration, Celestion's official IR packs are reliable and available as individual IRs rather than full bundles. Ownhammer is the standard for American cabs.