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Silver Flute W17RC38-04 6.5" Woofer Wool Cone - 4 ohm

Silver Flute W17RC38-04 6.5" Woofer Wool Cone -  4 ohm
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Price: $29.80
Product ID : w17rc38-4
Manufacturer: Silver Flute
Weight: 5.00 lbs
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Description

Silver Flute W17RC38-04 6.5" Woofer Wool Cone - 4 ohm

  • Wool Cone
  • Cast Frame
  • 25mm VC Ø on aluminum former
  • Vented Pole Piece
  • Rubber Surround

The Silver Flute line offers exceptional value, build quality,  and versatility.  

The woofer cones and dust caps are made from a special mixture of wool and paper fibers. These wool fibers help reduce cone resonance, and give the woofers a slightly warmer sound than traditional paper cones. 

The woofers have durable rubber surrounds and robust cast metal frames. The large voice coils are vented through the back plate. 

All Silver Flute woofers are available in both 4 and 8 ohm. 

Consider this product for home stereo, surround sound, autosound systems, and commercial line arrays. 

Please look at the mechanical specifications carefully as terms like 5" and 6.5" are generalizations.

Frame diameter 167mm
Cut out diameter 147mm
Bolt hole circle 160mm, 4.2mm screw holes
5mm flange thickness
75mm depth from back of flange

0.15 cubic foot sealed box for an f3 of 125Hz
0.25 cubic foot with 1.5" diameter vent by 5" long for an f3 of 70Hz
0.4 cubic foot with 2" diameter vent by 6" long for an f3 of 55Hz

Re 3.7 Ohms
Sensitivity 91.5 dB
Power 80 watts
Fs 37.5 Hz
Qms 1.52
Qes 0.28
Qts 0.24
Vas 25.6 Ltrs
Mms 17.4 g
Cms 1036.1 mM/N
Sd 0.0132 M2
BL 7.31 TM
X-max 5 mm
Le @ 1kHz 0.53 mH
Frame Ø 167 mm
Screw hole circle is 160 mm
Cutout Ø 147 mm
Depth 75 mm
Krm 1.370 mW
Kxm 17.805 mH
Erm 0.818
Exm 0.599

Box Suggestions:

  • 6 liters (0.21cf) vented 1.5" Øx 5.5"L for an F3 of 75Hz
  • 10 liters (0.35cf) vented with 2" Ø x 7"L for an F3 of 60Hz

Product Reviews

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Reviewed by Stubbs
11/22/2012 - 01:33:46 PM
Very Happy
I am still in the break in period for the amazing drivers. I don't care what the price is, these Silver Flutes are well built and sound great. My break in bench for these consists of a PC running digital out to an M-Audio Profire 2626, which feeds a clean signal to an old school Precision Power PPI-4200M that gives a solid 50 watts to each driver. The 6 1/2s are running in an open baffle arrangement with no crossover for the initial break in.

Initial Listening Impressions:
Imaging: Vocals are front and center and do not drift. These guys can hold a sound stage together very well. I am very impressed at how well these image and how large the sound stage is. I'm anxious to see how these do off axis in a car door.

Mid-range Clarity: I could listen to these all day. I am not saying that they have the openness of a horn, but they are pretty open and very smooth. Still pretty amazed how nicely these roll off without a crossover. Eda James was right in the room with me, complete with all the detail. The breadth and depth of her range was very apparent.

Mid-bass: This I can't really comment on because of them being in an open baffle arrangement at the moment. The upper mid-bass does sound really good at the moment. Tight, clean and no hint of muddiness. The more they play the better they get. They are going to crossed over pretty steep in the car at around 80hz when I install them as they are going to see a solid 150 watts from the late model Fosgate Power 300. I can't wait.


Once I get these in the car this weekend I will finish up the review. For now, I would highly recommend these to anyone. You will really enjoy them. I'm considering buying four more and pairing them with a set of horns for my living room. I have a set of old horns and a sub laying around that these might go well with.

Other speakers I have purchased: SEAS, Aura, Dayton Audio, Morel ECWs, Vifa and Aurum.
Reviewed by sirmaverick@gmail.com
sirmaverick@gmail.com bought "Silver Flute W17RC38-04 6.5" Woofer Wool Cone - 4 ohm" on our website
08/08/2012 - 10:14:09 PM
Amazing driver!
This is an incredible driver. I bought it to replace a pair of DA-175s, thinking the only difference would be the ability to play higher smoothly. Crossing with a miniDSP, the breakup didn't bother me at all.

Coming in at a $28 price tag for the DA-175, I expected this to be about the same, but boy was I wrong. This driver makes the DA-175 look like it should be $15. Massive motor, surprisingly well built, very nice cast frame, and overall incredible driver. I've been designing speakers for about a year now, and I was absolutely blown away by this driver.

As for the sound? The bass is incredible even free air in my car, the vocals are crystal clear, and it plays smoothly up to the 2000hz crossover point I'm using it for. By far the best 6.5" driver I've ever used. This is one perfect example of why price does not in any way indicate quality and performance. This driver should be selling for well over $50.

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