Select your source type. This sets the expected output voltage range and drives gain-setting guidance.
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Step 1 — Main amp (highs, mids, midbass)
Channels on main amp10 ch
Power per channel (RMS)150 W
Amp damping factor
?Damping factor = how tightly the amp grips a woofer cone. Higher = tighter, more controlled bass. <50 loose, 50–200 good, 200+ excellent. Class A/B usually 300–800, class D usually 100–500.200
Amp THD+N at rated
?Total Harmonic Distortion + Noise at rated power. Lower is cleaner. Class A/B: <0.05%. Class D: 0.05–0.5%. Above 1% is audibly poor.0.10%
Source signal in
Input volt.
Amp gain50%
Gain range
Tweeter (HPF only)
Sensitivity
Impedance
HPF3,500
Band: 3,500 Hz +
Midrange (bandpass)
Sensitivity
Impedance
HPF350
LPF3,500
Band: 350 – 3,500 Hz
Midbass 6.5" (bandpass)
Sensitivity
Impedance
HPF80
LPF350
Band: 80 – 350 Hz
Rear fill (bandpass)
Sensitivity
Impedance
HPF350
LPF8,000
Band: 350 – 8,000 Hz
Main amp gain position vs signal voltage
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min1/41/23/4max
Step 2 — Subwoofer amp & array
Sub amp channels1 ch (mono)
Sub amp power (RMS)500 W
Source signal in
Input volt.
Amp gain50%
Gain range
Sub array
Number of subs
Voice coils
VC imped.
Wiring & load
VC wiring
Array wire
Amp sees—
Sub speaker & filters
Sensitivity
Sub Qts
?Qts = total Q at resonance. Low (0.3–0.45) tight/accurate, prefers ported. Mid (0.45–0.55) flexible. High (0.55+) warm/boomy, prefers sealed.
Enclosure
LPF (high cut)80 Hz
Subsonic HPF25 Hz
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Band: 25 – 80 Hz
Sub amp gain position vs signal voltage
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min1/41/23/4max
Channel map
What each driver sees from music content
How loud will it play? (Max SPL estimate)
Listening distance1.0 m
Estimated max system SPL
—dB SPL
Headroom rating
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80 dB100 dB120 dB140 dB
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Sound quality & bass quality factors
Damping factor
?How tightly the amp grips the woofer. Higher = tighter, more controlled bass with less overhang.
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Amp distortion (THD+N)
?Lower distortion = cleaner, more accurate sound. Affects high-frequency clarity especially.
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Bass character (Qts × box)
?Tight bass = clean, accurate transients (best for music). Warm/boomy = more weight but less accurate.
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System efficiency
?Average sensitivity of all main drivers. Higher = louder per watt = more dynamic headroom.
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How to get more dynamic headroom from this system
Dynamic headroom is how much louder your system can get on transient peaks (drum hits, orchestral crescendos) before clipping. More headroom = punchier, more lifelike playback. Specific tips for this build:
Electrical headroom
Total system RMS
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all amps combined
Peak current draw
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at 14.4V, class D eff.
Min power wire (OFC)
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to main fuse block
Step 3 — Power wire: OFC vs CCA
OFC carries more current per gauge than CCA. CCA has ~60–65% the conductivity of solid copper. Go up 1–2 AWG sizes to carry the same current safely.
Full gauge comparison — OFC vs CCA (under 20 ft run)
