Headrush Impulse Responses
CT-Brit412V30-609421.wav
Inspired by Marshall® 4x12
Name decoding:
- CT → Choptones
- Brit → cabinet Marshall-style (British)
- 412 → checkout 4x12”
- V30 → speaker Celestion Vintage 30
- 609421 → microphone combination:
- 609 → Sennheiser e609 (attack, modern mid)
- 421 → Sennheiser MD421 (body, low-mid)
Sound character
This IR is a classic “modern rock blend”:
- low full but controlled
- defined and aggressive mids
- high present but less harsh than the 57
- fast attack
Result: modern, punchy, balanced sound
Perfect for:
- modern rock
- hard rock
- light metal
- compact rhythms
- direct recording
Recommended Parameters
Gain (dB)
IR level
Balanced IR → easy to manage
Examples:
- Clean: -4 dB
- Rock: -6 dB
- Metal: -7 / -9 dB
Adjust: balance based on amp gain
HiCut (Hz)
Cuts high frequencies
e609 → less harsh than 57 but still brilliant
Realistic range:
- 6kHz → 8kHz
Examples:
- Rock: 6.5 kHz
- Hard rock: 7 kHz
- Metal: 7–7.5 kHz
Rule: eliminate excess shine
LoCut (Hz)
Cuts low frequencies
V30 → low-end controlled but present
Realistic range:
- 90Hz → 130Hz
Examples:
- Rock: 100 Hz
- Hard rock: 110 Hz
- Metal: 120 Hz
Rule: Improve definition in palm mutes
Mix (%)
Blend IR / dry
Standard:
- 100%
Creative:
- 80–90% for parallel sounds
Pro Tips
Great starting point:
- Gain: -6 dB
- HiCut: 6.5–7 kHz
- LoCut: 100–110 Hz
- Mixes: 100%
This IR is already balanced:
less need for EQ perfect for live great for fast tracking
CT-Brit412V30-609421 is perfect:
as a versatile live and studio main IR for modern rock in combination with more “character” IR
Setup Examples
Modern rock
Gain-6 dB
HiCut6.5 kHz
LoCut100 Hz
Mixes100%
Sound:
- punchy, defined, balanced
Aggressive hard rock
Gain-7 dB
HiCut7 kHz
LoCut110 Hz
Mixes100%
Sound:
- powerful, present
Light metal
Gain-8 dB
HiCut7.3 kHz
LoCut120 Hz
Mixes100%
Sound:
- tight but natural
Modern lead
Gain-6 dB
HiCut6.8 kHz
LoCut105 Hz
Mixes100%
Sound:
- defined, fluid