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1. File: TM-12.bb6
By Magnus J, Ljudia
Email, tech@ljudia.com
Box Properties
--Description--
Name:
Type: Vented Box
Shape: Prism, square
--Box Parameters--
Vb = 29,53 liters
V(total) = 35,84 liters
Fb = 37,58 Hz
QL = 6,988
F3 = 35,79 Hz
Fill = minimal
--Vents--
No. of Vents = 1
Vent shape = round
Vent ends = two flared
Dv = 68, mm
Lv = 229,5 mm
A
B
C
--External Dimensions--
A = 394, mm
B = 364, mm
C = 364, mm
--Internal Dimensions--
A = 350, mm
B = 320, mm
C = 320, mm
--Wall Thickness--
Front = 22, mm
Side = 22, mm
Driver Properties
--Description--
Name: P.audio PRO TM-12
Type: Standard one-way driver
--Configuration--
No. of Drivers = 1
--Mechanical Parameters--
Fs = 48,5 Hz
Qms = 8,75
Vas = 17,51 liters
Cms = 0,056 mm/N
Mms = 192,2 g
Rms = 6,697 kg/s
Xmax = 13,3 mm
Xmech = 19,95 mm
P-Dia = 244,4 mm
Sd = 469,2 sq.cm
P-Vd = 0,624 liters
--Electrical Parameters--
Qes = 0,55
Re = 3,5 ohms
Le = 1, mH
Z = 8, ohms
BL = 19,3 Tm
Pe = 400, watts
--Electromech. Parameters--
Qts = 0,52
no = 0,35 %
1-W SPL = 87,59 dB
2.83-V SPL = 92, dB

2. Page Two -- TM-12.bb6
Box Parts
top & bottom
front & back sides
c
b
d
a
c
Box Shape: Square Prism
1 Top, 1 Bottom: depth (c) = 364, mm
width (b) = 364,, thickness = 22, mm
1 Front, 1 Back: height (a) = 350, mm
width (d) = 320,, thickness = 22, mm
2 Sides: height (a) = 350, mm
depth (c) = 364,, thickness = 22, mm
--Driver Mounting--
Mounting: Flush
--Vent Parts--
1 Duct: outside diameter (e) = 74,35 mm
inside diameter (g) = 68, mm
length (h) = 229,5 mm
vent
e g
h

3. Page Three -- TM-12.bb6
Normalized Amplitude Response (dB-SPL/Hz) BassBox 6 Pro
dB
6
0
-6
-12
-18
-24
-30
-36
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K
System Impedance (ohms/Hz) BassBox 6 Pro
ohms
80
70
60
50
40
30
20
10
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K
Phase Response (deg/Hz) BassBox 6 Pro
deg
90
0
-90
±180
90
0
-90
±180
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K
Group Delay (msec/Hz) BassBox 6 Pro
msec
24
20
16
12
8
4
0
-4
-8
5 Hz 10 50 100 500 1 K 5 K 10 K 20 K