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Ascendo The 18 Sub Pro Passive Sealed

Ascendo · Subwoofer · Sealed, passive · 2023

Open in the designer Add to compare Opens the designer's starter room with the Ascendo The 18 Sub Pro Passive Sealed on the subwoofer. It replaces the design open in this browser once you edit it, as a shared link does.

Specifications

Property Value Source
Sensitivity 99 dB/1W/m power: 1W · distance: 1m · loading: half_space · unit: dB/1W/m Sensitivity: Manufacturer, Ascendo THE18_SUB_PRO_PS technical data (August 2025) Manufacturer, Ascendo THE18_SUB_PRO_PS technical data (August 2025), Document ↗
Maximum SPL 146.5 dB (peak) loading: unstated · basis: peak · frequency: 160 Hz Maximum SPL: Independent measurement, Klippel NFS CEA2010B test Independent measurement, Klippel NFS CEA2010B test Document ↗
LF extension 70 Hz (-3dB) tolerance: -3dB LF extension: Independent measurement, Klippel NFS Independent measurement, Klippel NFS Document ↗
Frequency response Measured curve on file, 112 points, 9.8 to 5993.2 Hz drive: 2.83V @ 1m, 1/12 oct. smoothing, anechoic, 2pi · phase: not published; magnitude only · unit: dB SPL Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths, Document ↗
Cabinet, W × H × D 530 × 1150 × 380 mm order: W/H/D · grille: excluded · feet: included · unit: mm Cabinet, W × H × D: Manufacturer, ASCENDO product page, Dimensions (W/H/D) mm (Without Grille) Manufacturer, ASCENDO product page, Dimensions (W/H/D) mm (Without Grille), Document ↗

Response and output

Drawn on the same axes for every subwoofer in openavdb, so pages compare by eye. The designer's bass engine uses these curves.

Frequency response

  • Extracted from a published plot
Frequency response, Ascendo The 18 Sub Pro Passive Sealed: extracted from a published plot. SPL, 2.83 V at 1 m (dB) against frequency (hz), 10 to 200 Hz. 50 60 70 80 90 100 110 10 20 30 40 50 60 80 100 150 200 Frequency (Hz) Ascendo The 18 Sub Pro Passive Sealed SPL, 2.83 V at 1 m (dB) Frequency response, Ascendo The 18 Sub Pro Passive Sealed: extracted from a published plot. SPL, 2.83 V at 1 m (dB) against frequency (hz), 10 to 200 Hz. 50 60 70 80 90 100 110 10 20 50 100 200 Frequency (Hz) Ascendo The 18 Sub Pro Passive Sealed SPL, 2.83 V at 1 m (dB)
Plotted values
HzAscendo The 18 Sub Pro Passive Sealed
10.4367.03
11.0567.4
11.7167.61
12.467.26
13.1466.94
13.9266.91
14.7567.5
15.6269.91
16.5570.95
17.5472.74
18.5874.61
19.6976.05
20.8677.41
22.178.65
23.4180.26
24.881.69
26.2883.27
27.8484.53
29.585.5
31.2585.71
33.1185.85
35.0886.66
37.1687.29
39.3787.88
41.7188.16
44.1988.51
46.8288.46
49.6188.27
52.5689
55.6889.96
58.9991.74
62.594.33
66.2295.75
70.1596.51
74.3396.41
78.7595.95
83.4396.03
88.3997
93.6498.03
99.2198.73
105.1199.66
111.36100.01
117.98100.04
125100.08
132.4399.45
140.31100.01
148.65100.83
157.49101.35
166.85102.86
176.78103.05
187.29102.28
198.43102.56
Published at 2.83 V, 1 m; drawn as published. Source conditions: 2.83V @ 1m, 1/12 oct. smoothing, anechoic, 2pi. Source: Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths MEAS

Maximum output

  • Extracted from a published plot
Maximum output, Ascendo The 18 Sub Pro Passive Sealed: extracted from a published plot. Maximum SPL at 1 m (dB) against frequency (hz), 10 to 200 Hz. 60 70 80 90 100 110 120 130 140 150 10 20 30 40 50 60 80 100 150 200 Frequency (Hz) Ascendo The 18 Sub Pro Passive Sealed Ascendo The 18 Sub Pro Passive Sealed: 20 Hz, 106.4 dBAscendo The 18 Sub Pro Passive Sealed: 25 Hz, 114.3 dBAscendo The 18 Sub Pro Passive Sealed: 31.5 Hz, 119.9 dBAscendo The 18 Sub Pro Passive Sealed: 40 Hz, 119.7 dBAscendo The 18 Sub Pro Passive Sealed: 50 Hz, 122.5 dBAscendo The 18 Sub Pro Passive Sealed: 63 Hz, 135.8 dBAscendo The 18 Sub Pro Passive Sealed: 80 Hz, 137.5 dBAscendo The 18 Sub Pro Passive Sealed: 100 Hz, 140.8 dBAscendo The 18 Sub Pro Passive Sealed: 125 Hz, 140.3 dBAscendo The 18 Sub Pro Passive Sealed: 160 Hz, 145.8 dBAscendo The 18 Sub Pro Passive Sealed: 200 Hz, 138.7 dB Maximum SPL at 1 m (dB) Maximum output, Ascendo The 18 Sub Pro Passive Sealed: extracted from a published plot. Maximum SPL at 1 m (dB) against frequency (hz), 10 to 200 Hz. 60 70 80 90 100 110 120 130 140 150 10 20 50 100 200 Frequency (Hz) Ascendo The 18 Sub Pro Passive Sealed Ascendo The 18 Sub Pro Passive Sealed: 20 Hz, 106.4 dBAscendo The 18 Sub Pro Passive Sealed: 25 Hz, 114.3 dBAscendo The 18 Sub Pro Passive Sealed: 31.5 Hz, 119.9 dBAscendo The 18 Sub Pro Passive Sealed: 40 Hz, 119.7 dBAscendo The 18 Sub Pro Passive Sealed: 50 Hz, 122.5 dBAscendo The 18 Sub Pro Passive Sealed: 63 Hz, 135.8 dBAscendo The 18 Sub Pro Passive Sealed: 80 Hz, 137.5 dBAscendo The 18 Sub Pro Passive Sealed: 100 Hz, 140.8 dBAscendo The 18 Sub Pro Passive Sealed: 125 Hz, 140.3 dBAscendo The 18 Sub Pro Passive Sealed: 160 Hz, 145.8 dBAscendo The 18 Sub Pro Passive Sealed: 200 Hz, 138.7 dB Maximum SPL at 1 m (dB)
Plotted values
HzAscendo The 18 Sub Pro Passive Sealed
20106.4
25114.3
31.5119.9
40119.7
50122.5
63135.8
80137.5
100140.8
125140.3
160145.8
200138.7
Drawn as published, no shift. Source conditions: CEA-2010-B, peak, 1m, half_space_2pi, CEA2010B. Source: Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths MEAS