sony buyout

[XtremeRevolution]

Re: sony buyout

Did you look at these? http://www.madisoundspeakerstore.com...ome-truncated/

They should work well.

Those do look nice, but the extra shipping cost of buying from Madisound when everything else was in my cart at PE would have reduced any benefit from using them over the Vifa.

[tagaiz]

Re: sony buyout

Does anyone know what size the cabinet would have to be? The design I have right now is about 40 liters so just under 1.5 cubic feet. Also, should it be ported or sealed and should the tweeter be in a separate chamber than the woofers? I'm thinking it should be crossed over somewhere between 2500-3000 hz. I've never designed a speaker before, just subs so I really have no idea where to start with these.

My updated design.

[r-carpenter]

Re: sony buyout

I did a consistency check on random drivers. Very nice consistency.

Buffer[1] Vas
Completed: Thu Aug 11 16:39:15 2011
Drive level 100.000 % [ 3.613 mA]
Sine,LoZP(LV/LA)->Vas,19 pts
;------------------------------------------------------------------
Re = 8.0168 ohms
Fs = 79.1481 Hz
Zmax = 64.6445 ohms
Qes = 1.2523
Qms = 8.8461
Qts = 1.0970
Le = 1.0677 mH (at 1 kHz)
Diam = 114.3000 mm ( 4.5000 in )
Sd =10260.8260 mm^2( 15.9043 in^2)
Vas = 4.9490 L ( 0.1748 ft^3)
BL = 6.2371 N/A
Mms = 12.2200 g
Cms = 330.8931 uM/N
Kms = 3022.1238 N/M
Rms = 0.6870 R mechanical
Efficiency = 0.1841 %
Sensitivity= 84.6687 dB @1W/1m
Sensitivity= 84.6596 dB @2.83Vrms/1m



Buffer[1] Vas
Completed: Thu Aug 11 16:46:32 2011
Drive level 100.000 % [ 3.611 mA]
Sine,LoZP(LV/LA)->Vas,22 pts
;------------------------------------------------------------------
Re = 8.1240 ohms
Fs = 80.4181 Hz
Zmax = 67.6986 ohms
Qes = 1.1236
Qms = 8.2394
Qts = 0.9888
Le = 1.0725 mH (at 1 kHz)
Diam = 114.3000 mm ( 4.5000 in )
Sd =10260.8260 mm^2( 15.9043 in^2)
Vas = 5.0091 L ( 0.1769 ft^3)
BL = 6.5366 N/A
Mms = 11.6950 g
Cms = 334.9128 uM/N
Kms = 2985.8521 N/M
Rms = 0.7172 R mechanical
Efficiency = 0.2179 %
Sensitivity= 85.3997 dB @1W/1m
Sensitivity= 85.3329 dB @2.83Vrms/1m



Completed: Thu Aug 11 16:49:38 2011
Drive level 100.000 % [ 3.606 mA]
Sine,LoZP(LV/LA)->Vas,21 pts
;------------------------------------------------------------------
Re = 8.0314 ohms
Fs = 81.0210 Hz
Zmax = 67.3782 ohms
Qes = 1.2463
Qms = 9.2090
Qts = 1.0977
Le = 1.0682 mH (at 1 kHz)
Diam = 114.3000 mm ( 4.5000 in )
Sd =10260.8260 mm^2( 15.9043 in^2)
Vas = 4.9971 L ( 0.1765 ft^3)
BL = 6.1555 N/A
Mms = 11.5494 g
Cms = 334.1066 uM/N
Kms = 2993.0571 N/M
Rms = 0.6384 R mechanical
Efficiency = 0.2004 %
Sensitivity= 85.0365 dB @1W/1m
Sensitivity= 85.0194 dB @2.83Vrms/1m


Buffer[1] Vas
Completed: Thu Aug 11 16:49:38 2011
Drive level 100.000 % [ 3.606 mA]
Sine,LoZP(LV/LA)->Vas,21 pts
;------------------------------------------------------------------
Re = 8.0630 ohms
Fs = 81.0210 Hz
Zmax = 64.9082 ohms
Qes = 1.2671
Qms = 8.9330
Qts = 1.1097
Le = 1.0456 mH (at 1 kHz)
Diam = 114.3000 mm ( 4.5000 in )
Sd =10260.8260 mm^2( 15.9043 in^2)
Vas = 4.9971 L ( 0.1765 ft^3)
BL = 6.1167 N/A
Mms = 11.5494 g
Cms = 334.1066 uM/N
Kms = 2993.0571 N/M
Rms = 0.6582 R mechanical
Efficiency = 0.1971 %
Sensitivity= 84.9646 dB @1W/1m
Sensitivity= 84.9305 dB @2.83Vrms/1m


Buffer[1] Vas
Completed: Thu Aug 11 17:03:08 2011
Drive level 100.000 % [ 3.610 mA]
Sine,LoZP(LV/LA)->Vas,22 pts
;------------------------------------------------------------------
Re = 8.0320 ohms
Fs = 81.4669 Hz
Zmax = 64.9504 ohms
Qes = 1.2796
Qms = 9.0678
Qts = 1.1213
Le = 1.0619 mH (at 1 kHz)
Diam = 114.3000 mm ( 4.5000 in )
Sd =10260.8260 mm^2( 15.9043 in^2)
Vas = 4.9303 L ( 0.1741 ft^3)
BL = 6.0992 N/A
Mms = 11.5780 g
Cms = 329.6422 uM/N
Kms = 3033.5925 N/M
Rms = 0.6536 R mechanical
Efficiency = 0.1957 %
Sensitivity= 84.9350 dB @1W/1m
Sensitivity= 84.9177 dB @2.83Vrms/1m

Buffer[1] Vas
Completed: Thu Aug 11 17:43:19 2011
Drive level 100.000 % [ 3.612 mA]
Sine,LoZP(LV/LA)->Vas,23 pts
;------------------------------------------------------------------
Re = 8.0191 ohms
Fs = 79.4862 Hz
Zmax = 64.2758 ohms
Qes = 1.2896
Qms = 9.0472
Qts = 1.1287
Le = 1.0704 mH (at 1 kHz)
Diam = 114.3000 mm ( 4.5000 in )
Sd =10260.8260 mm^2( 15.9043 in^2)
Vas = 5.0487 L ( 0.1783 ft^3)
BL = 6.0732 N/A
Mms = 11.8770 g
Cms = 337.5583 uM/N
Kms = 2962.4517 N/M
Rms = 0.6556 R mechanical
Efficiency = 0.1847 %
Sensitivity= 84.6834 dB @1W/1m
Sensitivity= 84.6730 dB @2.83Vrms/1m

Buffer[1] Vas Ver 5.00
Completed: Thu Aug 11 18:06:02 2011
Drive level 100.000 % [ 3.612 mA]
Sine,LoZP(LV/LA)->Vas,19 pts
;------------------------------------------------------------------
Re = 8.1070 ohms
Fs = 80.1614 Hz
Zmax = 69.8130 ohms
Qes = 1.2153
Qms = 9.2505
Qts = 1.0742
Le = 1.0689 mH (at 1 kHz)
Diam = 114.3000 mm ( 4.5000 in )
Sd =10260.8260 mm^2( 15.9043 in^2)
Vas = 5.0098 L ( 0.1769 ft^3)
BL = 6.2880 N/A
Mms = 11.7685 g
Cms = 334.9563 uM/N
Kms = 2985.4644 N/M
Rms = 0.6408 R mechanical
Efficiency = 0.1995 %
Sensitivity= 85.0177 dB @1W/1m
Sensitivity= 84.9600 dB @2.83Vrms/1m

[r-carpenter]

Re: sony buyout

Johnny, check the DC resistance of your driver with DMM. I did all mine just for a sanity check. Calibrated S&L WT prior to testing and checked DC of every driver. Your DC is different and Le is half of what me and Alris are getting. Did you change Le test frequency? 1k is about standard for inductors and drivers.

[r-carpenter]

Re: sony buyout

Does anyone know what size the cabinet would have to be? The design I have right now is about 40 liters so just under 1.5 cubic feet. Also, should it be ported or sealed and should the tweeter be in a separate chamber than the woofers? I'm thinking it should be crossed over somewhere between 2500-3000 hz. I've never designed a speaker before, just subs so I really have no idea where to start with these.

My updated design.

I would think of a box as a "limiter" of the low end response. Perhaps try to look in to what kind of low end reinforcement you will be using and play with the roll off slop of the Sonys. May be look at it as a mid/upper bass transducer. I'll be plugging numbers soon.

[XtremeRevolution]

Re: sony buyout

I would think of a box as a "limiter" of the low end response. Perhaps try to look in to what kind of low end reinforcement you will be using and play with the roll off slop of the Sonys. May be look at it as a mid/upper bass transducer. I'll be plugging numbers soon.

Looking forward to it. I imagine even as cheap as they are, they should be able to hit at least 80hz with some authority if using 12 per side.

How are crossovers for these usually designed? Would it be a 2 way or a 2.5 way?

[r-carpenter]

Re: sony buyout

Looking forward to it. I imagine even as cheap as they are, they should be able to hit at least 80hz with some authority if using 12 per side.

How are crossovers for these usually designed? Would it be a 2 way or a 2.5 way?

well, you don't need BSC in the line array arrangement so 2.5 way wouldn't be useful.
I'll be trying for a mixed order (electrical second order on the woofer and 1st order on the tweeter/s).
80hz may be pushing too low?
Are you going with dipole or box?

[patrickm]

Re: sony buyout

Did you look at these? http://www.madisoundspeakerstore.com...ome-truncated/

They should work well.

that's a good tweeter, and so is the vifa. but for this case, i think the vifa wins, because it's more sensitive. i've used both and they are both smooth and easy to cross over above 2500 hz. there's a little blip in the response of the vifa around 4khz, but it's not offensive. the sinar baja is essentially the same as the tang band 25-302sh that PE carries.

[XtremeRevolution]

Re: sony buyout

well, you don't need BSC in the line array arrangement so 2.5 way wouldn't be useful.
I'll be trying for a mixed order (electrical second order on the woofer and 1st order on the tweeter/s).
80hz may be pushing too low?
Are you going with dipole or box?

Going for a sealed box, wall mounted. Is 80hz really too much of a stretch? I don't physically have one of these yet so I'm not entirely sure if they're capable of playing that low.

[tagaiz]

Re: sony buyout

Can anyone give me a design for a crossover? I want to place my order for the woofers soon and keep it to one order for everything to get free shipping.

[r-carpenter]

Re: sony buyout

Can anyone give me a design for a crossover? I want to place my order for the woofers soon and keep it to one order for everything to get free shipping.

nobody has the design for the crossover yet. The drivers came out on the market recently and that's why we are ping-ponging here about what to do with them. I'll share mine as it gets developed and I am sure other people will share theirs.

[XtremeRevolution]

Re: sony buyout

Well this is convenient. I placed my order yesterday, and they were already on vehicle for delivery this morning. If someone can get me a .frd and .zma file for this driver, I can start modeling a crossover. I can upload the .frd and .zma file for the vifa tweeter I purchased.

[Leroy R]

Re: sony buyout

Not that I needed another project, but I pulled the trigger on two cases of these today and a couple of the tweeters suggested earlier in the thread to try with them.
These http://www.parts-express.com/pe/show...number=280-062 and these http://www.parts-express.com/pe/show...umber=264-1028

[r-carpenter]

Re: sony buyout

finalized TS
measured on a large signal. Driver was fully warmed up/burned in, you name it. 40hz sine wave for 4 hours warm up.

[[email protected]]

Re: sony buyout

leroy! what are your plans?