Compare models
Two to four subwoofers or speakers on the same axes. Subwoofers: frequency response and maximum output. Speakers: off-axis response at one angle, horizontal and vertical. Every curve says whether it was measured, read from a published plot or modelled, and links its source.
Start a comparison
Tick “Compare” on up to four rows of the openavdb table, use “Add to compare” on a model page, or start from one of these:
Frequency response
Every curve is brought to 2.83 V at 1 m; radiation space and smoothing as each source states.
Plotted values
Sources
- Ascendo The 12 Sub Active Vented Extracted from a published plot Published at 2.83 V, 1 m; drawn as published. Source conditions: 2.83V @ 1m, 1/6 oct. smoothing, full range (no internal low-pass). Source: Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Ascendo The 12 Sub Active Vented, Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Document ↗
- Ascendo The 12 Sub Pro Passive Sealed Shallow Extracted from a published plot 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 Ascendo The 12 Sub Pro Passive Sealed Shallow, Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Document ↗
- Ascendo The 15 Sub Passive Vented Extracted from a published plot Published at 2 V; raised 3.0 dB to 2.83 V, 1 m. Source conditions: 2V @ 1m (1W @ Zn), 1/6 oct. smoothing. Source: Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Ascendo The 15 Sub Passive Vented, Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Document ↗
- Ascendo The 16 Sub Active Sealed Extracted from a published plot Published at 2.83 V, 1 m; drawn as published. Source conditions: 2.83V @ 1m, 1/12 oct. smoothing (chart legend), full range (no internal low-pass). Source: Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Ascendo The 16 Sub Active Sealed, Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Document ↗
- Ascendo The 16 Sub Pro Passive Sealed Shallow Extracted from a published plot Published at 2 V; raised 3.0 dB to 2.83 V, 1 m. Source conditions: 2V @ 1m (1W @ Zn), 1/6 oct. smoothing. Source: Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Ascendo The 16 Sub Pro Passive Sealed Shallow, Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Document ↗
- Ascendo The 18 Sub Passive Vented Extracted from a published plot Published at 2 V; raised 3.0 dB to 2.83 V, 1 m. Source conditions: 2V @ 1m (1W @ Zn), 1/6 oct. smoothing. Source: Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Ascendo The 18 Sub Passive Vented, Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Document ↗
- Ascendo The 18 Sub Pro Passive Sealed Extracted from a published plot 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 Ascendo The 18 Sub Pro Passive Sealed, Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Document ↗
- Ascendo The 18 Sub Pro Passive Sealed Shallow Extracted from a published plot 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 Ascendo The 18 Sub Pro Passive Sealed Shallow, Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Document ↗
- Ascendo The 24 Sub Pro Passive Sealed Extracted from a published plot 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 Ascendo The 24 Sub Pro Passive Sealed, Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Document ↗
- Ascendo The 28 Sub Squared Pro Passive Sealed Shallow Extracted from a published plot Published at 2.83 V, 1 m; drawn as published. Source conditions: 2.83V @ 1m (1W, 8 ohm configuration), half space (2pi). Source: Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Ascendo The 28 Sub Squared Pro Passive Sealed Shallow, Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Document ↗
- Ascendo The 32 Sub Pro Passive Sealed Extracted from a published plot 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 Ascendo The 32 Sub Pro Passive Sealed, Frequency response: Independent measurement, Klippel NFS measurement report, page 4 (frequency response), magnitude read from the PDF vector paths Document ↗
- Dayton Audio UMII18-22 in Heimkinobau 150 L sealed (DIY) Modelled, not measured Modelled: sensitivity 90.7 dB at 2.83 V, 1 m, shaped by the sealed high-pass the designer's bass engine uses. Source: Sealed alignment, Fc 35.8 Hz, Qtc 0.86 (Fc: Fs x sqrt(1 + Vas/Vb) = 22 x sqrt(2.655); Qtc: Qts x sqrt(1 + Vas/Vb) = 0.53 x sqrt(2.655)) Dayton Audio UMII18-22 in Heimkinobau 150 L sealed (DIY), Frequency response: Derived, Sealed alignment, Fc 35.8 Hz, Qtc 0.86 (Fc: Fs x sqrt(1 + Vas/Vb) = 22 x sqrt(2.655); Qtc: Qts x sqrt(1 + Vas/Vb) = 0.53 x sqrt(2.655))
Maximum output
Maximum output as each source publishes it, no shift; the standard and conditions are in the sources below.
Plotted values
Sources
- Ascendo The 12 Sub Active Vented Extracted from a published plot Drawn as published, no shift. Source conditions: CEA-2010-B, peak, 1m, half_space_2pi, CEA2010B Internal Amplifier. Source: Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Ascendo The 12 Sub Active Vented, Maximum output: Independent measurement, Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Document ↗
- Ascendo The 12 Sub Pro Passive Sealed Shallow Extracted from a published plot 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 Ascendo The 12 Sub Pro Passive Sealed Shallow, Maximum output: Independent measurement, Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Document ↗
- Ascendo The 15 Sub Passive Vented Extracted from a published plot Drawn as published, no shift. Source conditions: CEA-2010-B, peak, 1m, half_space_2pi, CEA2010B Powersoft K20 (Bridge Mode). Source: Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Ascendo The 15 Sub Passive Vented, Maximum output: Independent measurement, Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Document ↗
- Ascendo The 16 Sub Active Sealed Extracted from a published plot Drawn as published, no shift. Source conditions: CEA-2010-B, peak, 1m, half_space_2pi, CEA2010B Internal Amplifier. Source: Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Ascendo The 16 Sub Active Sealed, Maximum output: Independent measurement, Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Document ↗
- Ascendo The 16 Sub Pro Passive Sealed Shallow Extracted from a published plot Drawn as published, no shift. Source conditions: CEA-2010-B, peak, 1m, half_space_2pi, CEA2010B Powersoft K20 (Bridge Mode). Source: Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Ascendo The 16 Sub Pro Passive Sealed Shallow, Maximum output: Independent measurement, Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Document ↗
- Ascendo The 18 Sub Passive Vented Extracted from a published plot Drawn as published, no shift. Source conditions: CEA-2010-B, peak, 1m, half_space_2pi, CEA2010B Powersoft K20 (Bridge Mode). Source: Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Ascendo The 18 Sub Passive Vented, Maximum output: Independent measurement, Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Document ↗
- Ascendo The 18 Sub Pro Passive Sealed Extracted from a published plot 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 Ascendo The 18 Sub Pro Passive Sealed, Maximum output: Independent measurement, Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Document ↗
- Ascendo The 18 Sub Pro Passive Sealed Shallow Extracted from a published plot 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 Ascendo The 18 Sub Pro Passive Sealed Shallow, Maximum output: Independent measurement, Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Document ↗
- Ascendo The 24 Sub Pro Passive Sealed Extracted from a published plot 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 Ascendo The 24 Sub Pro Passive Sealed, Maximum output: Independent measurement, Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Document ↗
- Ascendo The 28 Sub Squared Pro Passive Sealed Shallow Extracted from a published plot Drawn as published, no shift. Source conditions: CEA-2010-B, peak, 1m, half_space_2pi, CEA-2010-B, measured in 2x 4 ohm configuration. Source: Klippel CEA2010B test, page 7 (Max Peak SPL, Max Passed), read from the PDF vector paths Ascendo The 28 Sub Squared Pro Passive Sealed Shallow, Maximum output: Independent measurement, Klippel CEA2010B test, page 7 (Max Peak SPL, Max Passed), read from the PDF vector paths Document ↗
- Ascendo The 32 Sub Pro Passive Sealed Extracted from a published plot 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 Ascendo The 32 Sub Pro Passive Sealed, Maximum output: Independent measurement, Klippel CEA2010B test, page 6 (Max Peak SPL, Max Passed), read from the PDF vector paths Document ↗
- Dayton Audio UMII18-22 in Heimkinobau 150 L sealed (DIY) Modelled, not measured Drawn as published, no shift. Source conditions: none (modelled), peak, 1m, anechoic, radiation space unstated, DP-4100N limiter 65 V peak at 4 ohm, 20 Hz BW4 high-pass. Source: our DSP settings model, Modeled performance per sub: peak SPL at the 65 V peak limiter, 20 Hz BW4 high-pass active Dayton Audio UMII18-22 in Heimkinobau 150 L sealed (DIY), Maximum output: Derived, our DSP settings model, Modeled performance per sub: peak SPL at the 65 V peak limiter, 20 Hz BW4 high-pass active
Horizontal response at 30° off axis
Off-axis response relative to each speaker’s own on-axis response, at the chosen angle. 0 dB means the same as on axis.
Plotted values
Sources
- Ascendo The 10 Passive LED Phantom Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 10 Passive LED Phantom, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 10 Passive On-Wall Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 10 Passive On-Wall, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 10 Passive Wedge 30 Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 10 Passive Wedge 30, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 12 Be Pro Active Ext On-Wall Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 12 Be Pro Active Ext On-Wall, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 12 Be Pro Passive On-Wall Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 12 Be Pro Passive On-Wall, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 15 Be Pro Passive On-Wall Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 15 Be Pro Passive On-Wall, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 15 Pro Passive On-Wall Extracted from a published plot Proxy of Ascendo The 15 Be Pro Passive On-Wall Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 15 Pro Passive On-Wall, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 6 Passive Narrow Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 6 Passive Narrow, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 6 Passive On-Wall Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 6 Passive On-Wall, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 6 Passive Wedge 30 Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 6 Passive Wedge 30, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 6 Pro Passive Ceiling Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 6 Pro Passive Ceiling, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 6 Pro Passive On-Wall Extracted from a published plot Proxy of Ascendo The 6 Passive On-Wall Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 6 Pro Passive On-Wall, Horizontal off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- JBL Synthesis SAM 1HF/2LF Measured Proxy of JBL M2 Relative to on-axis at each third-octave band; positive angles of the published ±180°. Source conditions: Horizontal/vertical SPL exported from spinorama.org (data file), relative to on-axis at the sample nearest each ISO third-octave centre, 20 Hz to 20 kHz (openavdb extraction script, 2026-09-26; the bands from 100 Hz are unchanged from the 2026-02 pass). Source: JBL M2 spinorama (Erin's Audio Corner), via spinorama.org JBL Synthesis SAM 1HF/2LF, Horizontal off-axis response: Independent measurement, JBL M2 spinorama (Erin's Audio Corner), via spinorama.org Document ↗
Vertical response at 30° off axis
Off-axis response relative to each speaker’s own on-axis response, at the chosen angle. 0 dB means the same as on axis.
Plotted values
Sources
- Ascendo The 10 Passive LED Phantom Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 10 Passive LED Phantom, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 10 Passive On-Wall Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 10 Passive On-Wall, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 10 Passive Wedge 30 Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 10 Passive Wedge 30, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 12 Be Pro Active Ext On-Wall Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 12 Be Pro Active Ext On-Wall, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 12 Be Pro Passive On-Wall Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 12 Be Pro Passive On-Wall, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 15 Be Pro Passive On-Wall Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 15 Be Pro Passive On-Wall, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 15 Pro Passive On-Wall Extracted from a published plot Proxy of Ascendo The 15 Be Pro Passive On-Wall Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 15 Pro Passive On-Wall, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 6 Passive Narrow Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 6 Passive Narrow, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 6 Passive On-Wall Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 6 Passive On-Wall, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 6 Passive Wedge 30 Assumed from horizontal Assumed equal to this report's horizontal plane: the published vertical page is the THE15 Be Pro's (see rejected). The THE6 is a coaxial driver rated 85 x 85 deg, so dispersion about the driver axis is close to symmetric; the wedge cabinet's asymmetry in the tilt plane is not captured. Replace when Ascendo reissues the report. Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 6 Passive Wedge 30, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 6 Pro Passive Ceiling Extracted from a published plot Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 6 Pro Passive Ceiling, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- Ascendo The 6 Pro Passive On-Wall Extracted from a published plot Proxy of Ascendo The 6 Passive On-Wall Relative to on-axis at each third-octave band; published 0 to 90° (symmetric). Source conditions: vector paths read from the SPL Horizontal / SPL Vertical pages (openavdb extraction script). Source: Klippel NFS measurement report, Contralto Audio Ascendo The 6 Pro Passive On-Wall, Vertical off-axis response: Independent measurement, Klippel NFS measurement report, Contralto Audio Document ↗
- JBL Synthesis SAM 1HF/2LF Measured Proxy of JBL M2 Relative to on-axis at each third-octave band; positive angles of the published ±180°. Source conditions: Horizontal/vertical SPL exported from spinorama.org (data file), relative to on-axis at the sample nearest each ISO third-octave centre, 20 Hz to 20 kHz (openavdb extraction script, 2026-09-26; the bands from 100 Hz are unchanged from the 2026-02 pass). Source: JBL M2 spinorama (Erin's Audio Corner), via spinorama.org JBL Synthesis SAM 1HF/2LF, Vertical off-axis response: Independent measurement, JBL M2 spinorama (Erin's Audio Corner), via spinorama.org Document ↗