6.2BUBBLE
5.2BOOM
BEQ 7.7
Spiral: From the Book of Saw (2021)DEMO 5.7
H0.9
S5.7
C10.0
bed
height
Spiral: From the Book of Saw (2021)
DEMO 5.7 · BUBBLE 6.2 · BOOM 5.2 (with BEQ 7.7). Bass measured on the disc, Atmos. Directed by Darren Lynn Bouseman. Thriller, Horror, Mystery.
Front
54%
L78%
54%
R78%
100%
C87%
LFE
19%
LFE37%
Surround
32%
Ls63%
32%
Rs63%
16%
Lrs42%
17%
Rrs45%
Wide
1%
Lw4%
2%
Rw4%
Height
2%
Ltf5%
2%
Rtf5%
3%
Ltm7%
3%
Rtm7%
1%
Ltr1%
1%
Rtr2%
Bar and top figure — level against the film’s most active channel. Bottom figure — share of the runtime the channel carries signal.
- DEMO
- 5.7 / 10
- Bubble
- 6.2 / 10
- Boom, as released
- 5.2 / 10
- Boom with BEQ
- 7.7 / 10
- Measured release
- Disc · Atmos · chart by aron7awol
- Also in the catalogue
- Streaming (Amazon) · DD+; Disc · DTS-HD MA 5.1 — not measured here
- Deep bass peak, 10–30 Hz
- -30.5 dBFS · with BEQ -23.4
- Depth, 10–20 vs 30–60 Hz
- -11.1 dB · with BEQ -3.4
- Average level, 10–30 Hz
- -52.1 dBFS · with BEQ -45.0
- Minutes of deep bass
- 21 min · with BEQ 52 min at ≥ −30 dBFS
- Tomatometer
- 37% · as of 29 Nov 2022
- Metascore
- 40 / 100 · as of 11 Oct 2025
- Chart scale read
- -10 to -70.3 dBFS
- Height uptime
- 4.6%
- LFE uptime
- 37.4% (shown, not scored)
- Dynamic range
- 23.6 dB
- Channels used
- 16 of 16
- Genres
- Thriller, Horror, Mystery
- Tags
- horror
- Audio
- Atmos, DD+, DTS-HD MA 5.1
- Released
- 14 May 2020
- First listed
- 7 Jun 2021
- Sources
- PerceptualPro + BEQ
- Render
- current
Channel by channel, through the film
One lane per speaker, the whole film from left to right. Bar height is how loud that speaker gets (square-root scale against this film's loudest moment, so quiet passages stay visible). The amber line under a lane marks the moments counted as playing, and the figure on the right is their share of the film. For the six height speakers that share is part of BUBBLE.
Front
L
78%
R
78%
C
87%
LFE
LFE
37%
Surround
Ls
62%
Rs
63%
Lrs
42%
Rrs
45%
Wide
Lw
3.6%
Rw
3.6%
Height
Ltf
4.8%
Rtf
5.0%
Ltm
7.1%
Rtm
7.4%
Ltr
1.2%
Rtr
1.7%
0:000:471:33
Read from PerceptualPro's channel-activity graph, pixel by pixel. A lane marked unused never rises out of its line.