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The EP4.8 / EP200.2SE / Exogal system was just awarded a Best Sound of Show at the 2017 Axpona show by AV Showrooms.

See the video at:

The new EP4.8 is the baby brother to our top of the line EP2.8. Essentially, it is the EP2.8 with one instead of two 15" open baffle Carbon Fiber woofers. Efficiency is 2dB lower at 98dB versus the 100dB of its larger brother. In addition bass is flat to 26Hz versus the 20Hz of the EP2.8.

Cutting edge sonic performance establishes a new level of realism & dimensionality at anywhere near its Internet Direct cost of only $8495.00 a pair.

See the Audioflea EP4.8 show review at:

Audio Flea summed with:
"The Emerald Physics EP-4.8 are a pair of must audition speakers for anyone considering buying a pair of speakers with a budget up to $50,000."

The reviews of the older EP4.7 was superb. This new speaker is a major step up with greater speed and detail as well as 3dB higher efficiency

"The Emerald Physics EP4.7 speakers offer an extraordinarily believable 3D holographic sound stage. They have better than subwoofer-quality bass. The midrange is the complete package. The upper frequencies have state-of-the-art resolution. If you are looking for a full range, high resolution, high-performance speaker then you should hear the Emerald Physics EP4.7. Even if you are prepared to spend (a LOT) more, the Emerald Physics EP4.7 offers exemplary performance and destroys all price-performance ratio benchmarks extant."

"They are keepers. I mailed the check and added them to the reference system."

Overall Rating: 10 LPs

Read the entire review at:

The upgraded EP4.7 is now called the EP4.8. The new Carbon Series EP4.8 is a state of the art 3-way speaker with 98Db efficiency.

If set up as single amp, full range network configuration, it is 95dB efficient. It can then be upgraded in the users home to either bi-amp or tri-amp operation. In addition to an extra 3dB of efficiency the new EP4.8 offers greater dynamics, improved midrange and bass transparency as well as resolution.

Our controlled dispersion design means that the speakers are not room dependent and work in all rooms.

The new custom designed Emerald Physics Carbon Fiber Series 15" woofer and 12" midrange drivers provide increased speed, transparency and resolution. Midrange smear is completely eliminated. Compare the EP4.8 to speakers selling for many times their Internet Direct price.

In addition to the new Carbon Fiber midrange and woofer the EP4.8 uses our Emerald Neodymium Polyester-Diaphram compression tweeter and an improved crossover over the original EP4.7 that it replaces.It is also wired with Wireworld OCC cable.

The innovation continues in the Bass range with our unique Aperture Bass Propagation Technology. This proprietary system is used for the custom Emerald 15" carbon Fiber dipole woofers. This design increases low frequency power and linearity, while improving on the speed and articulation of the original CS2 and older CS2.7. The new Emerald designed 15" carbon Fiber woofer moves 80% more air than the original CS2.3 and CS2.7 woofers so a single 15 gets us almost as much bass as the dual 15's of the older models.  The new 4.8 also adds our unique Bass Reservoir technology to our Apature Bass Loading to further improve bass response from previous open baffle designs.

In single amp dress it is 95dB efficient so small amps (20 watts or better) will work quite well. Once bi-amped or tri-amped the efficiency goes up to 98dB for even great dynamics. Pick a large amp for the bass and any amp with over 10 watts for the midrange/highs. Use an Emerald, 200 watts per channel, EP200.2SE for the bass and our 100wpc EP100.2SE for the midrange/highs for a perfectly sonic matched package. In addition, the speakers, as they ship in May, will have our new upgraded Natural Macassar Ebony finish, a nice upgrade over the black Tricoat of the older speaker.

The optional DSP2.4, DSP2.8 digital electronic crossovers or our Analog BOM improve the sonics even further by fine tuning the frequency response as well as extending bass response from 35Hz down to 26Hz. 


  • Does not require bi-amplification. 
  • Can be Single amped, Biamped or Triamped - Can even be Quad amped with a powered subwoofer
  • Removes the rooms acoustics so they work in all rooms
  • Emerald Physics 12" Carbon Fiber midrange with cast basket
  • Emerald Physics Long throw 15” woofer with carbon Fiber Cone and Cast basket
  • Emerald Physics 1" point source Neodymium Polyester tweeter
  • World Class sonic performance in a compact package. 
  • Incredible imaging and soundstage reproduction. 
  • Exceptional Class Bass speed and articulation. 
  • Works well in small rooms as close as 3 feet from the rear wall and as close as 1 foot to side wall. 
  • Can be used with small to moderate sized stereo amps or integrated amps
  • Optional DSP or our analog BOM extends the bass to 26Hz and improves frequency linearity 
  • Outboard 3 way passive crossover which also allows single amp, biamp or triamp operation
  • Optional BOM analog EQ or DSP 2.4 or DSP2.8 crossover/EQ's which have subwoofer crossover for bass extension & adds the ability to play very loud in larger rooms. 

EP4.8- $8,495/pr delivered in Natural Macassar Ebony finish

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EP4.8 in standard Macassar Ebony

System Type
3-way, Bi-amplified Dynamic Dipole - Optional DSP equalized
Frequency Response
26Hz–22kHz +/-1.5dB from target curve with DSP/35Hz-22KHz unequalized
8 Ohms nominal w/4.8 ohm min full range- 8 ohm bass / 8 ohms midrange/tweeter multi-amped
Max Power handling
150W RMS, 300W program
95dB 2.83V @ 1M @ 1kHz-Single amped / 98Db multi-amped
Custom Emerald 1 inch exit Neodymium Polyester compression driver
12 inch Emerald Physics Carbon Fiber midrange w/edge wound ribbon VC & cast basket
15 inch custom Emerald Physics Carbon Fiber with Cast basket
Crossovers- Full Range
Special Edition Mid/high –Passive outboard 3rd order acoustic filter @ 1000Hz/ 250 Hz woofer
Special Edition Mid/high Passive outboard 3rd order acoustic filter @ 1000Hz/Low/Mid –External DSP Asymmetrical active network @ 250Hz
Frequency Contour
Optional DSP or Analog EQ to improve frequency response and extend bass to 25Hz
Natural Macassar Ebony/ Limited quanty of Optional hand painted Cocobolo or Rosewood while supply lasts
40”H x 22”W x 3”D (Baffle) (15” with rear base)
Net: 70 lbs each, Shipping: 85 lbs each
*Specifications subject to change
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