TH I E L/ SM A L L PA R A M E T E R S
The T/S parameters of the Tantrum series woofers are engineered to allow the use of both
the single and dual VC versions in the same type of enclosure, interchangeably. This will
provide the same transfer functions, depending on the wiring requirement necessary. The
Parameters given are based on drivers that are broken in.That is, given time for the driver
to perform to it maximum potential after the suspension parts have loosened sufficiently
and thermally set the Voice Coil assembly. The enclosure recommendations are based on
PG’s extensive knowledge and experience with the Tantrum series and represent the "Best
fit" transfer functions for the majority of applications.PG includes the Tantrums T/S
parameters for your experimentation and development with differing installations.
Remember, when using computer-modeling programs, that they are usually referenced to
a half space environment.This same transfer function in the vehicle will appear as a rising
response with decreasing frequency below 100 Hz. Be sure to model the excursion
capabilities of your driver/enclosure combination to verify that the woofer will perform
properly for the power applied.A compromise will be found that allows the lowest F3 and
excursion limits.Occasionally the parts necessary may become physically unwieldy in size
and number relative to the enclosure dimensions chosen.
E NC L O S UR E C ON S TR U C T I O N :
The enclosure shape is not critical.The enclosure panels and material need to be rigid
and air tight at the seams.The structure and recommended cross bracing should be at
least 3/4" thick. Medium Density Fiberboard (MDF) is a recommended material for
constructing standard enclosures. Screws or an air stapler are excellent construction
fasteners when used with a strong bonding "yellow" wood working glue that can fill
joint gaps. Lining the walls with a Polyester batting (recommended) or bonded
fiberglass 1-3" thick is sufficient. Box "stuffing" is only suitable for sealed enclosures.
*Enclosure volumes do not account for speakers, braces or port s
W O O F E R S P E C I F I C AT I O N S
TA N T RU M D VC
TA N T RUM SV C
10d
12d
10
12
Revc (DC VC re/parrallel)
1.88
Ω
1.60
Ω
3.38
Ω
3.30
Ω
Levc (inductance@1Khz)
0.62mH
0.50mH
1.40mH
1.24mH
Fo (Res Freq)
28.0Hz
26.7.Hz
25.94Hz
24.75Hz
Sd (Piston Area)
0.033m
2
0.053m
2
0.033m
2
0.053m
2
BL (Flux Length)
8.31TM
8.25TM
10.79TM
12TM
SPLO (SPL @ 1W)
86.8dB
89.6dB
87.3dB
89.9dB
Qms (Mech Q)
5.58
5.07
6.71
5.32
Qes (Elec Q)
0.42
0.425
0.40
0.41
Qts (Total Q)
0.39
0.392
0.38
0.38
Vas (Acous Vol)
56.47L
131.65L
6 8.17L
141.75L
Cms (Compliance)
369µM/N
330µM/N
446µM/N
359µM/N
Mms (Total Mass)
87.29g
107.87g
84.44g
115.10g
Pe (Therm Power Handling)
200W
250W
200W
250W
Xmax (P-P Lin.Excursion)
8.0mm
8.0mm
8.0mm
8.0mm
Vc (Voice Coil Diameter)
2.0in
2.0in
2.0in
2.0in
Vdd (Driver Displacement)
138in
3
224in
3
138in
3
224in
3
Mounting Diameter
9 3/8in
11in
9 3/8in
11in
Mounting Depth
4 3/4in
5 1/4in
4 3/4in
5 1/4in
E N C L O S U R E R E C O M M E N D AT I O N S
S E A L E D
V E N T E D
B A N D PA S S
Vb*
Vb*
Fb
Vd
Vl
Vrear* Vfront* Fb Vd
Vl
CuFt
CuFt
Hz
Inches Inches
CuFt
CuFt
Hz
Inches
Inches
TA N T RUM
1 0 / 1 0 D
MUSICAL
1.2
1.2
35
3
9.25
0.95
0.6
46
3
12.5
SPL
0.5
0.95
48
4
10.5
0.83
1.2
51
4
7.5
TA N T RUM
1 2 / 1 2 D
MUSICAL
2.0
2.5
31
4
9.25
1.75
1.0
45
4
13.25
SPL
0.70
1.5
43
4
7.75
0.95
1.5
55
4
4
E N C L O S U R E R E C O M M E N D A T I O N C H A R T
Your PG dealer has extensive technical knowledge,tools and the experience needed
for the design and construction necessary for your Tantrum woofer application. We also
recommend that you consult with your dealer for specific detailed technical assistance
related to your installation.
The charts provided should be used as a reference when building an enclosure for your
Tantrum woofers.The charts above contain three enclosure types to produce a Musical
(Sound Quality) or an SPL system. Each of the three enclosure types,(Sealed, Vented,
Bandpass) provides a different degree of performance. Musical enclosures will provide
deeper and tighter bass while the SPL enclosures will give high output with less
extended bass.Sealed enclosures are simple to construct. Vented enclosures, while
more complex, can be manipulated to extend or peak the transfer function.The very
complex Bandpass enclosures are capable of very high output with limited bandwidth.
Due to ongoing research and developments, all specifications effective 4/01 are subject to change without notice.
