Overview

Deepcut 12 is a sealed subwoofer built for music. A sealed alignment trades a few dB of deep output for noticeably tighter transient behaviour and lower group delay than a comparable ported box.

The cabinet is deliberately small and heavily braced — a stiff, dead box is what keeps a sealed sub sounding clean at level.

Why sealed

  • Lower group delay than a ported box of the same driver
  • Gentle 12 dB/octave rolloff that often integrates well with room gain
  • No port noise or chuffing at high excursion
Driver 12" long-throw
Enclosure volume 45 L sealed
System Qtc 0.71
Amplifier 300 W RMS plate amp
Click a flag to buy. Total: €247.00
Component Qty Unit Unit Price Total Notes Buy
12" long-throw subwoofer driver 1 €110.00 €110.00
300 W plate amplifier 1 €95.00 €95.00
MDF 22 mm sheet 1 €28.00 €28.00
T-nuts, gasket tape, polyfill 1 €14.00 €14.00

Cut panels and brace stock

2 h

Assemble with a brace matrix

2 h + cure
  • Run a bead of glue along every internal corner — a sealed sub is only as good as its leaks are absent.

Fit the plate amp and driver

1 h

Set gain, phase and low-pass

1 h
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