Directed Electronics Viper 550.2, Viper 650.2, Viper tweet Specifications

Viper Speakers

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Directed Electronics, Inc. Speaker Parameter Sheet

11/30/2001 36055 tweet 36065

MODEL 550.2 tweet 650.2
Fs (Hz) 71.1 1534.54 51.7
Vas (cu.ft.) 0.19 N/
Vas (L) 5.5 N/

Qms 7.19 1.16 5.91
Qes 0.5 2.76 0.45

Qts 0.47 0.82 0.42

Re (ohms) 3.8 3.36 3.8
Z (ohms) 444
Le (mh) 0.49 0.01 0.483

SPL (dB 1w@1m) 87.86 91 89.29

XMAX (inches) 0.2 0.02 0.2
XMAX (mm) 4.8 0.5 4.8
Pe (watts) RMS 80 100 100
Pmax (peak / music power) 140 160 160

Mmd (grams) 8.35 0.21 10.52

Mms (grams) 8.77 0.22 11.297
Cms (mm/N) 571 49 839
Bl (Tesla-M) 5.46 1.6 5.565
EBP 142 556 115
Sd (sq. m.) 0.008252 0.000616 0.012272
Sd (sq. in) 0.00127906 9.55E-05 0.0019022

0.63

17.87

sealed box (cu. ft.) low n/a n/a n/a
sealed box (cu. ft.) avg. 0.25 n/a 0.35
Sealed box H x W x D (in.) * 12.25x7.6x4.6 n/a 13x8.5x5.5
avg. box F3 (Hz) 106 n/a 87
avg. box Fb (Hz) 100 n/a 86

avg. box Q 0.7 N/
sealed box (cu. ft.)SPL N/A N/A N/A

vented box (cu.ft.) 0.334 N/A 0.785
Vented box H x W x D (in.) * 11.75x10x8.75 N/A 15x12.6x11

port tuning freq. (Hz) 59 N/A 47
port diameter round (inches) 2 N/A 2.5
port square (inches) 3.14 N/A 4.91
port length (inches) 5.8 N/A 5.61

Other parameters 5.25" 1" 6.5"

magnet size (oz.) 1.728 0.72 1.728
magnet dia. 25mm 25mm 25mm

voice coil dia. (in.) 111
back-plate vent size (in.) N/A N/A N/A
mounting depth (in.) 2.8 1 3.2
mounting hole dia. (in.) 4.8 2.125 5.7
frame dia. (in.) 6.2 2.5 7.3
frequency range (Hz) 65-5K 3K-25k 58-3K

0.7

system frequency 65-25K N/A 58-25K

A

system efficiency in dB 90 N/

90