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Old 24th October 2012, 07:47 AM   #1
haryojo is offline haryojo  Indonesia
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Default 3 way speaker, need midrange

I have planed to build 3 way speaker. But have not midrange driver yet, just Woofer and tweeter (SB Accoustic 6" SB17NRXC35-8 + Twitter : vifa XT25TG30-04 . Does any one can help me to give advise what compatible midrange for these drivers, the driver below :

1. Woofer SB Accoustic 6" SB17NRXC35-8
Nominal Impedance = 8 ohm
DC resistance, Re = 5.7 ohm
Voice coil inductance, Le = 0.15 mH
Effective piston area, Sd = 118 cm2
Voice coil diameter = 35.5 mm
Voice coil height = 16 mm
Air gap height = 5 mm
Linear coil travel (p-p) = 11 mm
Magnetic flux density = 1.0 T
Magnet weight = 0.54 kg
Net weight = 1.56 kg
Free air resonance, Fs = 32 Hz
Sensitivity (2.83 V/1m) = 89 dB
Mechanical Q-factor, Qms = 5.0
Electrical Q-factor, Qes = 0.36
Total Q-factor, Qts = 0.34
Moving mass incl.air, md = 11.0 g
Force factor, Bl = 5.9 tm
Equivalent volume, Vas = 44.5 liters
Compliance, Cms = 2.25 mm/N
Mechanical loss, Rm = 0.44 kg/s
Rated power handling = 40 watt



2. Twitter : vifa XT25TG30-04
Nominal Impedance = 4 ohm
Nominal impedance [ohm] 4
Voice coil resistance [ohm] 3.0
Nominal power [W] 140
Short term max power [W] 950
Long term max power [W] 400
Operating power [W] 5.3
Sensitivity [dB] 91.5
Frequency range [kHz] 1.5-40
Free air resonance [Hz] 500
Voice coil diameter [mm] 25
Voice coil height [mm] 2.2
Air gap height [mm] 3.2
Voice coil inductance [mH] -
Eff. diaphragm Area [cm²] 5.4
Moving mass [g] 0.30
Magnet weight [g]/[oz] 240/8.5
Force factor [Bl] 2.5
VAS [l] 0.017
Qms 2.50
Qes 0.71
Qts : 0.55


thank..haryo
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Old 24th October 2012, 07:51 AM   #2
tinitus is offline tinitus  Europe
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why 3way ?

but a midrange for this woofer, I would suggest a small 3" widerange with lowish 85db sensitivity
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Old 24th October 2012, 07:55 AM   #3
haryojo is offline haryojo  Indonesia
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i like jazz music...so I need to get detail each music instrument..like hear or in the middle of concert..hehe
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Old 24th October 2012, 08:03 AM   #4
tinitus is offline tinitus  Europe
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B 80 - 8 Ohm

and on this small size, Monacor have a few new improved hi-Q verisons of older proven designs
dont know if they actually are better, but the old 5" SPH130 have had very good reputation
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Old 24th October 2012, 08:05 AM   #5
haryojo is offline haryojo  Indonesia
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what does it mean B 80?
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Old 24th October 2012, 08:07 AM   #6
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i havent tryed this one but there´s a thread here about it , search for scanspeak 10F

10F/8424G00 - Scan-Speak 4 inch wideband coated fiberglass - Europe Audio
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Old 24th October 2012, 08:20 AM   #7
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by haryojo View Post
what does it mean B 80?
should be a link ?
its a new Visaton 80mm midrange
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Old 24th October 2012, 08:35 AM   #8
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hmm, If I were doing a three way I would not have opted for a 6" for the woofer, probably an 8" minimum and maybe a 10" or 12"!!

I've got a couple of these SB Acoustics :: 4" SB12MNRX25-4 which I haven't managed to use yet, but I felt that they would make excelent mids in a three way

Tony.
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Old 24th October 2012, 08:55 AM   #9
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by wintermute View Post
hmm, If I were doing a three way I would not have opted for a 6" for the woofer, probably an 8" minimum and maybe a 10" or 12"!!
actually, Im thinking about a 2.5way using SB 8" and 6" together
tweeter could be anything, but definately a waveguide in any case, somehow
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Old 24th October 2012, 09:46 PM   #10
Dissi is offline Dissi  Switzerland
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I recommend to use a 4.5" midrange driver of reasonable price and approved quality:

Seas MCA12RC
Monacor MSH-116/4

Both are available at Europe Audio.
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