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Scan-Speak Revelator 28W/4878T00 Subwoofer
Scan-Speak Revelator 28W/4878T00 Subwoofer
Scan-Speak Revelator 28W/4878T00 Subwoofer
Scan-Speak Revelator 28W/4878T00 Subwoofer
Scan-Speak Revelator 28W/4878T00 Subwoofer
Scan-Speak Revelator 28W/4878T00 Subwoofer
Scan-Speak Revelator 28W/4878T00 Subwoofer
Scan-Speak Revelator 28W/4878T00 Subwoofer

Scan-Speak Revelator 28W/4878T00 Subwoofer

Scan-Speak Revelator 28W/4878T00 Subwoofer

The 28W/4878T00 is a very powerful 28cm subwoofer, with its large 3” voice coil, extreme linear excursion and low resonance frequency is it perfect to reproduce the deepest frequencies.

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Scan-Speak Revelator 28W/4878T00 Subwoofer

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Product description

Paper sandwich cone

Spider with balanced tinsel leads

3” Voice coil, Titanium former and paper reinforced

Patented Symmetrical Drive motor

Extreme linear excursion (+/-14 mm)

Stiff and strong die cast aluminium chassis

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Product details

Scan-Speak Revelator 28W/4878T00 11" Subwoofer

The 28W/4878T00 is a very powerful 28cm subwoofer, with its large 3” voice coil, extreme linear excursion and low resonance frequency is it perfect to reproduce the deepest frequencies. It features a paper-sandwich cone with very high stiffness and relative low weight. The motor system has heavy duty copper sleeves for optimizing eddy currents and minimizing self-induction.

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Suggested Box Alignments:

1.5 cubic feet sealed box for 3dB down of 48Hz and 6dB down of 32Hz

3.0 cubic feet with 3" vent by 13" long for 3dB down of about 22Hz

2.75 cubic feet with 3" vent by 15" long for f3 of 23Hz

2.5 cubic feet wtih 3" vent by 17" long for f3 of 25Hz

The sealed box used with a plate amplifier with bass boost might be a nice little subwoofer. The port length on the vented boxes is pretty long. Be sure you leave at least 3" to the back wall, preferably more. 

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Specifications

Article number28W/4878T00
Woofer SeriesRevelator series
Woofer TypeSubwoofer
Nominal Diameter11"
Power Handling (RMS)200 Watts
Power Handling (max)500 Watts
Impedance (Z)4 ohms
Sensitivity (SPL at 1m / 2.83V)88.2 dB
Voice Coil Diameter3"
DC Resistance (Re)3.1 ohms
Voice Coil Inductance (Le)0.5 mH
Resonant Frequency (Fs)18 Hz
Mechanical Q (Qms)5.6
Electromagnetic Q (Qes)0.32
Total Q (Qts)0.3
Diaphragm Mass Inc. Airload (Mms)114.5 g
Mechanical Compliance of Suspension (Cms)0.68 mm/N
Surface Area of Cone (Sd)363 cm2
BL Product (BL)11.2 Tm
Compliance Equivalent Volume (Vas)4.49 ft.³
Maximum Linear Excursion (Xmax)14 mm

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28W/4878T00
2 Items

Scan-Speak was founded in 1970 by Ejvind Skaaning and is today a world leader in the development and manufacture of high-end transducers. Scan Speak chassis have been used for years by the largest hifi and high-end loudspeaker manufacturers worldwide, obtaining unsurpassed results.

Scan-Speak Discovery

The Discovery family is one of the largest lines in Scan-Speak’s families, and a lot of its drivers are best sellers in Nonsolospeakers shopThis line of products is so popular because it offers a wide variety of choices of sizes. The design is based on traditional electroacoustic knowledge and craftsmanship. The cones are made of a glass fibre material coated to achieve proper damping, and that ensures smooth sound pressure frequency response. In this family, the well-known design, namely the 3” dome midrange Scan-Speak D7608/920000, still goes strong in terms of quality and performance despite its many years on the market. Other popular products in this family are the Scan-Speak Discovery R2604/832000, the Scan-Speak Discovery D2606/922000, and the Scan-Speak Discovery D2604/833000.

Scan-Speak Illuminator

The Illuminator line features advanced technology, and incredible performance. Characterized by an extreme care in the realization of the coils which are equipped with a linear excursion. Combined with the care in the use of materials for the cones and diaphragms guarantee transparency, detail and, the lack of distortion even at the highest levels is difficult to find elsewhere. The most popular example of this family is the Scan-Speak 18WU/8741T00 illuminator.

Scan-Speak Revelator

Products in the Revelator family feature a slit-paper uncoated non-resonant cone that reproduces music at a dynamic level, and clarity was unparalleled in the market. The tweeters are predominantly designed with a large roll surround, a powerful ring of Neodymium magnets, and optimized airflow systems. Within the wide Revelator range, you will find everything you need when it comes to high-end audio transducers, whether you need drivers for a small 2-way system or a giant multi-way loudspeaker. The Scan-Speak 15W/4531G, for example, provides a more extended frequency response than its brothers but still fantastic bass in a vented enclosure.

Scan-Speak Classic 

The quality and success of Scan-Speak's designs are found in the Classic family with patented and proprietary technologies such as Symmetrical Drive, Low Loss Linear Suspension, Air-Dry Carbon Reinforced Paper Cones, and Paper Reinforced Nylon. The latest additions are Scan-Speak Classic D2904/980000 and Scan-Speak Classic D2008/851100.

Scan-Speak Ellipticor

One of the goals for a new driver concept at Scan-Speak was to minimize cone modes, and this family uses an innovative concept: an elliptical-shaped voice coils to control the cone and dome. By not driving the diaphragm asymmetrically, what you get is an “infinite” number of Eigen frequencies, but less contribution for each frequency and overall lower distortion. Driving the diaphragm symmetrically gets you a finite number of Eigen frequencies with a higher contribution combining at certain frequencies producing the “dreaded” colouration modes. From this concept, it was developed the Scan-Speak Ellipticor 18WE/4542T00.

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