Neutron Studios NDX Quantum Speaker pack QS-P12Q-NDX NAM Profiles

Recorded with Jensen P12Q speakers in an open-back, 1×12 Tweed Cabinet.

This Phase 2 NDX Quantum Speaker pack contains:

5 Quickstart profiles with pre-mixed mic blends
27 discrete mics for full, phase-accurate blending control
6 Console Filter IRs for shaping your final output
All profiles fully compatible with Neural Amp Modeler (NAM)

About Quantum Speaker

Each Quantum Speaker pack is designed for playback with NAM (Neural Amp Modeler), a multi‑platform solution compatible with a variety of devices and plug‑ins.

The packs are themed around a specific speaker and contain 27 discrete mic positions, distributed across 6 professional microphones (2× Dynamic, 2× Condenser, 2× Ribbon) plus our proprietary Neutron Sub transducer for precise low‑frequency control.

Blend microphones seamlessly - exactly as you would in a real‑world recording session - to create your own signature tone. Or load one of the 5 included Quickstart profiles for instant, studio‑ready results.

To fine‑tune even further, 6 console filter IR files are also included.

What is NDX?

NAM was already the most accurate profiling solution available in terms of frequency content.
NDX (Neutron dyNAMix) is Neutron Audio's custom NAM training process - a combination of software, hardware, and expertise designed to add an additional, deeper layer of time‑based dynamic realism.

NDX allows for:

Authentic profiling of complex compression, transient recovery, and saturation bloom

Accurate time‑domain level‑dependent changes that affect how gear feels, not just how it sounds

Reduced aliasing‑type artifacts in high‑gain profiles

Greater realism and fidelity across all NAM‑compatible devices

Historically, this level of realism required CPU‑heavy, custom architectures with limited compatibility.
NDX encodes this extra dynamic information directly into standard NAM profiles, working seamlessly across any NAM‑compatible platform.

All profiles in this pack are created using the NDX system.

Jensen P12Q – Profile Overview

Speaker Type: 12″ Alnico
Power Rating: 40 Watts (vintage spec ~20–25 W)
Frequency Range: 70 Hz – 5 kHz
Sensitivity: 95 dB

The Legend Behind the Tone

The Jensen P12Q is a 12″ alnico magnet speaker that became the voice of the Fender Tweed era.
First introduced in the 1950s, it defined the tone of legendary amps like the 5E3 Tweed Deluxe - delivering a warm, woody, and harmonically rich foundation with a signature soft breakup and upper‑mid chime.

When pushed, the P12Q offers unmistakable vintage compression and touch‑responsive sag that flatters both single‑coil and humbucker pickups.

Its tonal signature is equally at home in vintage Americana, blues, and edge‑of‑breakup rock.

Performance Characteristics

Low End: Tight and woody
Highs: Sparkly, airy chime
Overdrive: Creamy, vintage‑style breakup
Touch Sensitivity: Excellent - reacts beautifully to player dynamics
Best Use Case: Vintage blues, Americana, early rock, tweed‑style circuits

Cabinet Pairing

For this pack, the P12Q was captured in an open‑backed 1×12 Tweed cabinet, giving the sound a three‑dimensional midrange bloom and fast low‑end response.

This pairing perfectly complements low‑to‑mid‑powered tube amps, letting the P12Q's tonal personality breathe fully while preserving its airy, articulate top end.