speakers specs

[pmchoong]

Hi all,

Can one tell how good is this speaker by just looking at these specs? Is it worth building one with this? Thanks.


6.5" Double Cone Full Range (4ohm or 8 ohm available).
- Cellulose Paper diaphragm with rubber surround
- Up to 18kHz
- High efficiency with balanced frequency response and very good low-mid.

ACOUSTICAL DATA
Rated Musical power: 35 W
Short term maximum power: 75 W
Rated impedance: 4 Ohm
Resonance frequency Fs : 55.000 Hz
Rated frequency range: 60 - 18000 Hz
Sensitivity : 92 dB
TS PARAMETERS
Acquired by MLSSA D-0-10
Effective piston area Sd: 126.700 cm2
DC resistance of voice coil Re: 3.600 Ohm
Mechanical Q factor Qms: 2.640
Electrical Q factor Qes: 0.800
Total Q factor Qts: 0.610
Voice coil inductance Le: 0.3
Equivalent volume Vas: 23.000 l
Moving mass (including air load) Mms: 8.200 g
Suspension compliance Cms: 1022.000 uM/Newton
Force factor Bl: 3.6 Tm
Maximum linear displacement Xmax: 2.8 mm
MECHANICAL DATA
Voice coil carrier material: Aluminium
Voice coil diameter: 25.4 mm
Winding height of voice coil: 6.2 mm
Yoke diameter: 25 mm
Air gap height: 4.5 mm
Magnet external diameter: 72 mm
Magnet internal diameter: 32 mm
Magnet height: 15 mm
Compensating magnet external diameter - mm
Compensating magnet internal diameter - mm
Compensating magnet height - mm
Weight 0.7 kg

[hoyo55]

No, you can't really tell what a driver sounds like from the specs. An SPL/frequency plot would help a lot. Given the Qts of .61, though, this one ought to give a fair indication of its potential in an open baffle. Since an OB is so cheap and easy to put together, its definately worth building one to see how it sounds (assuming the drivers are already in your possession or aren't prohibitively expensive themselves).

[pmchoong]

Hi Hoyo,

Thanks for the reply. No, there aren't too expensive but I just do not want to put too much effort for little return. I like to build a horn for these. What do you think?

[Glowbug]

The Qts is pretty high for a horn-loaded design...

[picowallspeaker]

The Qts is pretty high for a horn-loaded design...

So , what would be the right Q ? And if two drivers are used ? Could that determine a total lowering of Q when put in exercise in a box ( compression chamber ) ?
Thanks!