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10. OPTIONS
10.2. Option: HP 700 SE with phono
10.2.1. HP 700 SE with phono RIAA
A record player is an electro-mechanical device. Music signals are “pressed” into the grooves in the
record, and these are physically tracked and read by the pickup cartridge. In order to get the entire
20 Hz - 20 KHz frequency range into the grooves, the frequency response has to be shaped by
lowering the level of the low-frequency information and raising the level of the high-frequency
information. This predefined equalization curve is known as RIAA equalization.
A phono amplifier must be able to reproduce the RIAA equalization to avoid coloring the sound.
Equalization accuracy must be within 0.7 dB over the entire frequency range, with channel matching
of at least 0.3 dB.
The phono
RIAA amplifier of the HP 700 SE must always be supplemented with an input
module.
A maximum of two phono input modules can be installed. The input modules function in the
same way as an input amplifier that raises the different signals of the pickup cartridge to a constant,
high level, which the RIAA amplifier can optimally process.
Phono is then selected via IN 1 to IN 2.
Possible input module variants with the phono option:
Phono RIAA must be installed
Slot 1
Slot 2
At least 1 phono input module
Phono input
Nothing
At least 1 phono input module
Nothing
Phono input
2 identical or 2 different phono inputs
Phono input
Phono input
1 phono input and 1 line input
Phono input
Line input
1 phono input and 1 line input*
Line input
Phono input
*This variant is not recommended because the line signal routing is crossed.