Headrush Impulse Responses
Twin212OB
Inspired by Fender® Twin Reverb 2x12 (Open Back)
Interpretation:
- Twin → reference to Fender Twin Reverb
- 212 → checkout 2x12”
- OB (Open Back) → open back
Sound character
This is one of the cleanest and most realistic IRs:
- sound very open and airy
- soft but not deep bass
- high brilliants but sweet
- huge headroom
- extreme dynamic response
Result: clean, three-dimensional, “amp in the room” sound
Perfect for:
- clean Fender
- jazz
- country
- funk
- ambient / shimmer
- pedal platform
Recommended Parameters
Gain (dB)
IR level
Very dynamic IR → DO NOT compress
Examples:
- Clean: -3 dB
- Funk: -4 dB
- Environment: -4 / -5 dB
Rule: Maintain headroom for dynamics
HiCut (Hz)
Cuts high frequencies
Twin is brilliant → fundamental parameter
Realistic range:
- 5 kHz → 9 kHz
Examples:
- Clean hot: 5.5 kHz
- Funk: 6.5–7 kHz
- Environment: 6–7 kHz
Rule: too high = punchy sound too low = you lose sparkle
LoCut (Hz)
Cuts low frequencies
Open back → less controlled bass
Realistic range:
- 70Hz → 120Hz
Examples:
- Clean: 80 Hz
- Funk: 90 Hz
- Environment: 85–95 Hz
Rule: maintains clarity without taking away body
Mix (%)
Blend IR / dry
Standard:
- 100%
Creative:
- 80–90% for ambient sounds
Pro Tips
Great starting point:
- Gain: -4 dB
- HiCut: 6.5 kHz
- LoCut: 85–90 Hz
- Mixes: 100%
If the sound is:
- too bright → lower HiCut
- too dark → raise HiCut
- too “loose” → raise LoCut
- not very dynamic → lower Gain
Twin212OB is perfect:
as a pedal base for stereo sounds with delays and reverbs for realistic recordings
Setup Examples
Clean Fender classic
Gain-3 dB
HiCut6 kHz
LoCut80 Hz
Mixes100%
Sound:
- bright, open, natural
Percussive funk / clean
Gain-4 dB
HiCut7 kHz
LoCut90 Hz
Mixes100%
Sound:
- defined, snappy
Ambient / shimmer
Gain-4 dB
HiCut6.5 kHz
LoCut85 Hz
Mixes90–100%
Sound:
- wide, spatial, airy
Clean jazz
Gain-3 dB
HiCut5.5 kHz
LoCut80 Hz
Mixes100%
Sound:
- warm but defined