Silver Flute W17RC38-08 6.5" Woofer Wool Cone
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Overview
Silver Flute W17RC38-08 6.5" Woofer Wool Cone 8 ohm
LEAP design with TN25 tweeter
LEAP design with TW025A0 tweeter
- Wool Cone
- Cast Frame
- 38mm VC Ø on aluminum former
- Vented Pole Piece
- Rubber Surround
- Includes black phillips head wood screws for mounting
- Use QC205R & QC205B quick connects
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.
These Silver Flute woofers are available in 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", 6.5", and 8" are generalizations.
Mechanical Specifications:
Frame diameter 167mm (6.57")Cut out diameter 147mm (5.79")
Bolt hole circle 160mm (6.3")
Screw holes 4.2mm (0.17")
Flange thickness 5mm (0.20")
Magnet diamater 111mm (4.38")
Depth (from back of flange) 75mm (2.75")
Suggested Box Alignments:
0.15 cubic foot sealed box for an f3 of 110Hz
0.3 cubic foot with 1.5" diameter vent by 4.75" long for an f3 of 70Hz
0.5 cubic foot with 2" diameter vent by 5" long for an f3 of 55Hz
Specifications:
Re 7.3 Ohms
Sensitivity 89 dB
Power 80 watts
Fs 40.5 Hz
Qms 1.52
Qes 0.36
Qts 0.29
Vas 28.2 Ltrs
Mms 13.57 g
Cms 1140.0 mM/N
Sd 0.0132 M2
BL 8.26 TM
X-max 5 mm
Le @ 1kHz 0.94 mH
Frame Ø 167 mm
Screw hole circle 160 mm
Cutout Ø 147 mm
Depth 75 mm
Krm 2.001 mW
Kxm 36.187 mH
Erm 0.836
Exm 0.582
Box Rec.: 12 ltrs, 2" Ø V x 6" L
Frequency & Impedance Response:
Works well as a MTM design
I had a pair of .75 cu ft MTM cabinets lying around from a years old non-finished project. I also had a pair of these Silver Flute W17RC38-08 woofers not used. I decided to order another pair of the Silver Flutes and, using some old Euro tweeters assemble the speakers s a MTM design just to see what they would sound like. I crossed them over at 2 khz. They did not sound too bad at all.
I have always liked these Silver Flutes because they have a soft yet detailed sound to them. I like natural fiber speakers and do not like poly or aluminum cones.
I decided to upgrade the old tweeters so I emailed Madisound asking for a recommendation for new tweeters with a $50 price point each. Adam at Madisound suggested stretching my budget to $75.00 and get the ScanSpeak tweeters, which I did. The minute I installed them the speakers came alive. I was amazed at how good they sounded. That was a good upgrade so I decided to push the design a little farther still by using a correctly designed crossover.
I am no expert at crossovers so I had Madisound do a LEAP design for the ScanSpeak tweeters and the Silver Flute woofers. Then I had them assemble the crossovers using quality parts.
I ported the speakers with a 3” port 5.5 inches long. The speakers sit 20” off the floor on metal stands I designed and a metal artist friend of mine made. This puts the tweeters at ear level when one is sitting listening to them.
Once the new crossovers and tweeters were installed all I can say is wow, do these sound good. Very smooth. Vocals are astounding. I can listen to them for hours. I hear things I never heard before in my music. I do have a sub-woofer but only use it on older recordings as older recordings seem to lack bass.
I want to thank Madisound (and Adam) for their help and guidance. I highly recommend these woofers. You don't see these to much in a MTM design, but they work well like this. Buy them, you won't regret it.