Skip to main content

About
EP-3

The new EP-3 (formerly called CS3 MK2) replaces our successful CS3. The EP-3 represents the next generation in our dipole technology with its point source design. There is not a single part from the original CS3 in this new EP-3 upgraded version. The EP-3 employs our new Emerald Physics EP12.1 custom 12” woofer/midrange and tweeter point source driver with 1” compression Titanium tweeter and external passive crossover. The Emerald Physics DSP2.4 electronic crossover/EQ provides DSP controlled subwoofer crossover and equalization for the system. Our controlled dispersion design eliminates most listening room anomalies, allowing the EP-3 to sound great in virtually all rooms. With a powered subwoofer you can have a fully bi-amplified system that can fill almost any sized room with superb dynamics and bass into the 20Hz range. Our beautiful new cosmetic is a major upgrade. Satin Black is standard. Custom finishes are be available at additional cost.

Shown in Tricoat red that is no longer available

Upgrade to the new EP3.4 for $1000.00/pr

Features:                                                                                      

  • Single Amp drive - Does not require bi-amplification. 
  • New Emerald Physics EP12.1 12" midrange with Emerald 1" tweeter point source driver 
  • World Class sonic performance in a compact package. 
  • Incredible imaging and soundstage reproduction. 
  • World Class Bass speed and articulation. 
  • Works well in small rooms as close as 2 feet from the rear wall. 
  • Can be used with moderate stereo amps & integrated amps w/preout & main in. 
  • Outboard hi pass crossover 
  • Includes DSP 2.4 crossover/EQ which has subwoofer crossover for bass extension & adds the ability to play extremely loud in larger rooms. 

Retail price from $3795/ pair in black with DSP2.4 EQ/Crossover
Optional hi gloss automotive grade finishes in black or anthracite adds $1200.00/pr
Gorgeous Rosewood or Cocobolo finish is an $1,800.00 a pair option. 
Optional handmade front grills to cover the drivers are available at $200/pr

DSP2.4 Crossover Files for CS3 MK2

Technical
specifications

System Type
Passive 2-way Dynamic Dipole - DSP crossover & equalized
Frequency Range
48Hz–22kHz -3dB without subwoofer from target curve
Frequency Linearity
+/- 0.50 dB from 100Hz-20KHz from target curve
Impedance
8 Ohms nominal
Max Power Input
150W RMS, 300W program
Sensitivity
95dB 1.83V @ 1M @ 1kHz
Drivers
Emerald Physics High Freq: 1 inch exit Titanium compression driver
Emerald Physics Low Freq
12 inch paper cone with 2.5” voice coil
Crossover
3rd order acoustic Butterworth filter at 900Hz
Digital Frequency crossover/Equalizer
– Emerald Physics DSP2.4
Finishes
Black standard, Optional upgraded finishes available at additional charge
Dimensions
38.75”H x 22W x 3”D baffle, Base is 15.25” depth total
Weight
Net: 60lbs, Shipping each: 75lbs each
All specifications and pricing subject to change
Quote: 
"The proof of the pudding is in the eating. And this is a tasty little dish."
Reference: 
-Part time audiophile @ AXPONA 2014 show
Quote: 
"I simply have never heard any speaker quite like the EP. I can't yet explain it. A cross between the MBLs and Quads BUT NOT. Amazing!!!!"
Quote: 
"I'm sitting with these things saying...there's NO distortion"
"The proof of the pudding is in the eating. And this is a tasty little dish."
"I simply have never heard any speaker quite like the EP. I can't yet explain it. A cross between the MBLs and Quads BUT NOT. Amazing!!!!"
"I'm sitting with these things saying...there's NO distortion"

More information

Walter Liederman at Underwood Hifi
 770-667-5633
7 + 3 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.