Rega RS10 - Manuel (Page 4)

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The high frequency sound of a BMR is so good that the quality level of any
normal tweeter will not combine with it. This is why Rega felt compelled
to design a new and unique tweeter that would complement the BMR unit.
This new tweeter the ZRR-10 uses Rega’s ZRR (Zero Rear Reflection)
technology combined with a unparalleled production technique that
allows the silk dome to be assembled directly onto the front plate thus
eliminating a major source of unwanted vibration.
Each tweeter is meticulously hand assembled at Rega’s factory in the UK
and incorporates a copper Faraday ring which extends the frequency
response of the tweeter up to 23Khz by lowering inductance of the voice
coil.
For bass frequencies the RS-10 uses two separate bass drivers
connected in parallel. The drivers are different sizes, have different
resonant frequencies and operate with individually separate cabinet
loading: A 200mm driver with a lightweight paper cone, 8 layer voice coil
and a resonant frequency of 40Hz operates in a transmission line with
port output extending below audibility coupled with a 125mm driver also
with a lightweight paper cone, 8 layer voice coil and resonant frequency
of 75Hz which is loaded by a small sealed cabinet.