Stones Sound Studio Ribbon 260, Manual, Page: 8 / 32

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Loudspeaker Description
Crossover 260 260C 360
The Linkwitz Riley (Bessel /Butterworth) crossover unit was developed to enable good linear phase and minimum
THD distortion through the pass band and over lap regions of both the woofer and ribbon tweeter whilst providing
wide dynamic range and excellent low mid and high level continuity of detail .
A 2nd order low pass with a 3rd order high pass filter slope was chosen after evaluating many different design
combinations to provide optimum isolation between low and high frequencies. Time compensation of the driver xyz
location and rising peaks response in the woofer and tweeter on and off axis were reduced buy fine tuning crossover
component values thus enabling coherent coupling from bass to tweeter combination through out the crossover
region. The fully finished crossover PCB includes all components, high quality internal wiring and Velcro mounting
tabs
Components used in the Ribbon Speaker crossover are High quality Non-Inductive resistors, Copper Air core
Inductors, SCR 400V metalized MKP capacitors.OFC 384 strand copper wiring
Crossover Features Summary
• Fully finished PCB includes all components and wiring ready to install
•
Soldering: None required Wiring cable: Internal speaker cable high quality OFC 384 strand with push on
connections
•
Speaker terminals: 4mm twin gold plated binding post
•
Filter 2 way off set Bessel / Butterworth, linear phase
•
Frequency: 260 260c 3.8 KHz 360 Freq 3.2Khz
•
Order: 2nd Lp, 3rd Hp
Speaker Cable type internal wiring & amplifier
OFC 384-speaker cable is made from a low loss pure OFC copper. The cable is a type of Litz wire construction
formed from 384 thin copper wires woven into a low profile flat rectangular shape and then insulated with a clear
polymer jacket. This excellent combination of shape and size ensures the OFC 384 speaker cable has minimal
HF loss from the skin effect found in round conductors and also enables a lower overall impedance which
provides better bass depth, midrange transients and dynamics.
Other speaker cable I recommend to are QED Nordost Chord Kimber Audio Quest