adding small subs
 

if i add a set of 2x5"subs at my feet and have my 11"sub in the back what will happen to my SQ ?

this is the subs i'm looking at
http://www.focal.tm.fr/accueil_en.htm


Focal® is a trademark of Focal-JMlab®
108, rue de l'Avenir - BP 374 - 42353 La Talaudière cedex - France - Tel. +33 4 77 43 57 00 - Fax +33 4 77 43 57 04 - www.focal-fr.com
Specifi cations
Parameters
Mechanical Drawing
©Focal-JMlab - SCFR041108/2
Unit: mm
13 WS Be
5’’ Utopia Be® subwoofer
75 W
150 W
87.8 dB
W
Rubber
4 ohm
3.09 ohm
32 mm 1.26 in
22 mm 0.86 in
Kapton®
2
Copper
0.6 mH
8 mm 0.31 in
Neodymium
1 T
6 mm 0.24 in
0.7 kg 1.54 Ibs
53.43 Hz
5.24 I
0.495
0.520
10.09
3.09 ohm
86.59 cm2
3.73E-08 m5/N
237.93 kg/m4
7916.47 ohm.ac
4.97E-04 m/N
17.84 g
0.594 kg/s
501.28 mF
17.70 mH
59.96 ohm
5.97 N/A
83.71 dB/W/m
• Compact subwoofer
• W cone
• Neodymium magnet
• Zamak basket
• For small closed box
Suggested application
Load V (l) Fb (Hz) F-3 (Hz) Ql
Sealed 5 - 96 0.707
Sealed 3 - 78 0.82
Fs
Vas
Qts
Qes
Qms
Re
Sd
Cas
Mas
Ras
Cms
Mms
Rms
Ces
Les
Res
BI
SPL
Frequency Response
Nominal power
Maximum power
Sensitivity (2.83V/m)
Cone
Surround
Nom. impedance
DC resistance
VC diameter
VC height
Former
Layers
Wire
Inductance
Xmax
Magnet
Flux density
Gap height
Net weight

I have a pair of JL 6-1/2 subs for sale if you're interested. I used to have them in the doors paired up with 5-1/4" 3 ways. It worked great but won't fit in my new car