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Eclipse SC8355

5-1/4" + 1-1/2" 3-way Component Speakers System (SC-8355)


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Eclipse SC8355

5-1/4" + 1-1/2" 3-way Component Speakers System (SC-8355)


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Audiophile Grade Sound

With the Eclipse SC8355, Bringing audiophile sound into the car has never been easier! This 3-way component system integrates top-notch loudspeaker engineering with high-end materials to accurately reproduce your music. Both the woofer and the midrange feature aluminum cones and Santoprene surrounds. The crossover filters are Butterworth Optimum Q Crossover filters with adjustable dB settings. The midrange and the tweeter feature a mounting bracket that effective allows both to be mounted together using only one mounting hole. This is especially useful when designed a custom panel or for installations where custom holes need to be made. The Eclipse SC8355 is the perfect 3-way system for those looking for incredible sound quality.

  • 5-1/4" 3-Way Component System
  • Power Handling:
    • Peak: 500 watts per set / 250 watts each side
    • RMS: 170 watts per set / 85 watts each side
  • Solid Aluminum Cones
  • Santoprene Surround
  • 1-1/2" Ferro-Fluid Aluminum Midwoofer
  • 3/4" Solid Aluminum Hard Dome Tweeter
  • Aluminum Diecast Baskets
  • Porous Flat Spider
  • Vented Pole Piece
  • Audiophile-grade, speaker-specific matched component passive crossover with clear lexan cover
  • 12dB/octave high-pass, 6dB/octave low-pass Butterworth Optimum Q Crossover Filters
  • OFC wirewound air core inductors and metallized polypropylene capacitors
  • Tweeter protection circuit
  • 4 ohms impedance
  • Aluminum Voice Coil Former
  • Neodymium Magnet
  • Top-mount depth: 2-5/8"
  • 1-year warranty

Priced Per Complete Component System: 2 woofers, 2 midranges, 2 tweeters and 2 crossover networks.

Speaker Specifications

This is the manufacturer product line of speakers.
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
3-way Component Speakers
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Santoprene Rubber
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
250 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
85 watts
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
87 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
35 - 25000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches, required to contain the speaker.
Hi-Res Audio Compatible
This feature refers to if the product is capable of Hi-Res Audio (HRA) playback.
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Number of Speakers
This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

Please refer to the product image and description for further details about the speaker.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Oakland City, IN

good sound but not very durable

March 20, 2010

I just replaced these because the mid bass seized. they were only a few months old the sound was good but not the best i've heard. It is hard to make room for the tweeter and mid range driver. I think eclipse has slipped the wrong way over the years they went from top of the line to a steady downslide.

7 of 8 found this helpful

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west st paul, MN

great speakers, good deal!

February 9, 2011

Installed these speakers in my grand prix, installation was time consuming but not too difficult, had to go to menards to buy a special drill bit to cut a hole in the door panel to mount the mid/tweeter. once installed the speakers sound great. had to return a woofer for warranty after 10 months of use. awesome speakers for the price

5 of 6 found this helpful

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Excellent system

December 16, 2010

Outstanding power; in fact the most powerfull in this woofer size available to my knowleadge.
Great quality crossovers give the system a professional sound performance. A+

Worst thing is the woofer protective screen is so plain and spartan. They should've worked five more minutes on its design. It really does not keep up with the rest of the system.

5 of 6 found this helpful

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Chula Vista, CA

Best available.

July 1, 2010

I own a 2001 BMW Z3 and I thought I could install the tweeters in the original area designed for them. I had to get them custom installed in the doors right under the original ones. They sound way too loud, specially the tweeters. After installing these you will automatically realize that you need to install a sub, otherwise your treble will be way to strong against a very poor bass. 100% Recommended

5 of 6 found this helpful

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Atlanta, GA

Couldn't find a better bang for the Buck!

April 23, 2009

I was recommend by a sales rep from Circuit City to shop @ Sonic for the Eclipse SC8355, I researched the web and couldn't find a better bargin else where. I had them installed later by Circuit City in my Porsche Carrera. It being a convertible w/the top down screaming down the road and the wind swirling around my head is the proof in the pudding. For the door panels and dash speakers the sale rep @ Circuit City was right, people that cruise in my car are always telling me, "Boy Porsche makes a Great stereo", I'm quick to correct them, they are Eclipse speakers. Thanks so much with the quick shipping, professional and friendly customer service too!

5 of 6 found this helpful

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Placentia, CA

Excellant for the money!

April 13, 2010

I bought this set for a friend's BMW E46 325i which has factory provisions for a 3way in the front doors.

The mid/tweeter fits the BMW doors like they were actually made for them - ZERO modifications were needed. The midwoofer needed a custom mounting ring though.

Woofer -
I believe that the mid is where this component set really shines. It has very good midrange presence and a decent amount of midbass for 5.25" woofer. The picture listed doesn't really do them any justice - excellent build quality and beautiful to look at, it is a shame that they will be hidden behind the factory grills in my friend's car. The cone is solid spun aluminum which results in a very stiff cone. It also appears that the suspension relies a lot on the surround as it's extremely stiff as well.

Mid/tweeter -
This mid is very interesting...hard domes are a rarity in car audio these days. I was not able to examine the mid much but it appears to be a built around a neo magnet. The tweeter is about the smallest as they come. They are compact and surprisingly smooth for a hard dome. From what the specs indicate on the manual it appears that the mid really acts as a tweeter and the tweeter acts as a super tweeter. Not a problem in my books - they sound great together.

Crossover -
The crossover looks like they are built out of good parts, they only gripe is that it only had tweeter attenuation (6db) adjustments. I would like it to have midrange adjustments or even bi-amp capable.

All in all these are about the best 3way speakers you can buy at this price point. The set sounded very natural for being metal cones/domes.
This set is powered with a 100w x 2 amplifier and so far so good as my friend is extremely pleased with these speakers.

3 of 4 found this helpful

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December 15, 2010

They can scream.... loud and clear but if put too loud the tweeters shut down. I took the plastic cover off the crossovers and they don't seem to cut out as much. They're running at 85 RMS and are worth the money but if run too high they give out a little, and don't expect to get any bass from them def meant for a add on to a system with subs.

2 of 3 found this helpful

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Eclipse SC8355