ScanSpeak 15W/8530K-01 5.5" Revelator Woofer

Manufacturer: ScanSpeak

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Product ID: 15w_8530k01

$237.80

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10 - 10,000
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Overview

Scan-speak 15W/8530K-01 5.5" Revelator Slit Paper Cone Midwoofer- 148mm - 8 ohm

Scan-speak 15W/8530K-01 5.5" Revelator Slit Paper Cone Midwoofer- 148mm - 8 ohm

Spec Sheet PDF

The Revelator midrange and midwoofers, both well known for their sliced paper cone technology. The slices are filled with damping glue, which dramatically reduces break-up modes in the diaphragm. In combination with Scan-Speaks low-loss linear suspension and the patented Symmetrical Drive (SD-1) it represented a breakthrough in midrange clarity and overall smooth frequency response characteristics.

High Qts version, good for sealed or free air. The Revelator woofers and subwoofers feature very rigid cones in paper or aluminium that operate as a piston over a wide frequency range, in combination with Scan-Speak's low-loss linear suspension and the patented Symmetrical Drive (SD-1) results in very low distortion and a smooth and well behaved frequency response as well as perfect transient reproduction.

Features a non-resonant cone and dust cap structure, dynamic linear suspension, SD-1 magnet system, "Grasshopper" cast chassis with maximized air flow and resonance terminating mounting system. Less resonance in all structures, lower compression and higher linearity, faster termination of excess energy and higher sound pressure capability allow the 15W more musical and dynamic capability than any other 5 ½" we know of. Wonderful bass in a small box!

Outside diameter: 148mm
Cut out: 125mm
Depth: 71mm
25.4mm = 1" = 2.54cm

Box suggestions:

0.25 to 0.3 cubic foot sealed box with 20% filling for F3 of 65Hz
Vented box not recommended as the Qts is too high. Use the 15W/8530K-00 version.

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Winner

Reviewed by fb-1963910647170042 on 04/30/2017

A client wanted me to use these, but backed out.
I always start an unfamiliar driver on an open baffle.
With a simple first order 1mH series coil, and 2nd order filtering out sub 80 hertz bass, this is amazing performance on a small baffle.
Works very well with a padded XT25BG60-04 Vifa tweeter, along with a sub.
Room gain seems to fix the upper mid hump, I will gladly keep these drivers for myself.
They also mate exceptionally well with some 505 mini panel electrostatics at hand, no level adjustment required.
Hard to find a dynamic driver which pairs well with these, it just sounds like the mini panels are full sized, full range electrostats; in spite of their reputation as relaxed sounding drivers , I believe the Scanspeaks sound relaxed due to low distortion, and natural transient response.
On paper, the qts seems a bit low for open baffle, but they are fine for this, on a minimal 12×25 inch panel, with hidden 5 inch deep sides.