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Luxman L-308: γνωρίζει κανείς;
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<blockquote data-quote="Musicalicius" data-source="post: 1471407" data-attributes="member: 10078"><p>Είναι πραγματικά ένα πολύ όμορφο κλασικό κομμάτι που έβγαινε από το 1973 μέχρι το 1975 με πρωτοποριακό για την εποχή του phono stage.</p><p></p><p>Luxman L-308 june 1973 1975 Luxurious mid-to-high-end amplifier preceding the more remembered L-309, inaugurating LUX's staple Linear Equalizer circuit.</p><p></p><p>Linear Equalizer is a 5-step up or down "tilt" to the preset RIAA curve, rotating the 1kHz-centered frequency response up or down : more bass & less treble or more treble & less bass.</p><p>There is too much compression and standardization today to justify a Linear Equalizer, but given the highly variable response curve of the recordings back then, this surely was uselful !</p><p></p><p>The regular tone controls are Lux's (other) staple NF controls with selectable center frequency.</p><p></p><p>The circuit is a fully-complementary DC power amp section with dual-rail power-supply and 3-stage DC EQ circuit for the phono - Single-Stage, Duo-ßeta, plus-X and Circuit /S were for later years.</p><p></p><p>Compared to the later L-309, the L-308 doesn't have the back pot to attenuate the MAIN in input level, nor the MIC inputs with pulll-on/off level pot, replaced by tape 1 i/o jacks.</p><p>Bar power output, the rest is the same : 2-position low cut, 2-position high cut, low boost, stereo/L/R/Mono (L+R)/Reverse, 3-position phono 1 impedance selector, tuner input level pot and 2-way dubbing/monitoring.</p><p>Replaced in late 1975 by... nothing : the L-309 took over for that segment of the Luxman marketing and its many (many) (many) (many) (confusing) (diverging) (overlapping) (market-dependent) segments.</p><p></p><p><strong>Beautiful, simple, healthy, shiny 1970s nevertheless.</strong></p><p><strong></strong></p><p></p><p>RMS power output : 2x 55W (8 Ohm, continuous, both channels driven) </p><p> 2x 65W (8 Ohm, continuous, single channel driven) </p><p>Power bandwidth : 5Hz...50Khz (-3dB ; 0,03% THD) </p><p>Frequency response : 10Hz...50Khz (± 1dB) </p><p>THD : < 0,03% (8 Ohm, 55W) </p><p>IMD : 0,04% (8 Ohm ; 55W) </p><p>Residual noise : 0,5mV (86dB) </p><p>Damping factor : 40 (8 Ohm) </p><p>Input : 600mV / 40kOhm </p><p>PRE section PRE section </p><p>Frequency response : 10Hz...50Khz (line input ; -1dB) </p><p>THD : < 0,03% (line input ; 1V) </p><p>Inputs : 2,5mV / 90k-65k-50kOhm (phono 1) </p><p>2,5mV / 65kOhm (phono 2) </p><p>100mV / 150kOhm (aux 1 & 2) </p><p>100mV / 50kOhm (tuner) </p><p>Max. input signal : 300mV (phono ; 1Khz) </p><p>S/N ratio : > 65dB (phono 1 & 2) </p><p>> 80dB (lines) </p><p>Bass controls : ± 8dB / 100Hz ; 150Hz turnover </p><p>± 10dB / 100Hz ; 300Hz turnover </p><p>± 12dB / 100Hz ; 600Hz turnover </p><p>Treble controls : ± 12dB / 10Khz ; 1,5Khz turnover </p><p>± 10dB / 10Khz ; 3Khz turnover </p><p>± 8dB / 10Khz ; 6Khz turnover </p><p>Low cut filter : 20Hz or 70Hz / 6dB/octave </p><p>High cut filter : 7Khz or 12Khz / 6dB/octave </p><p>Low boost filter : 100Hz 6dB/octave </p><p>Special brand-new control : 5-steps Linear Equalizer </p><p>General </p><p>Dimensions : 48,5 x 30 x 16,5cm </p><p>Weight : 12,5kg. </p><p>Listprice : 100,000¥ (1973) </p><p> 120,000¥ (1974)</p></blockquote><p></p>
[QUOTE="Musicalicius, post: 1471407, member: 10078"] Είναι πραγματικά ένα πολύ όμορφο κλασικό κομμάτι που έβγαινε από το 1973 μέχρι το 1975 με πρωτοποριακό για την εποχή του phono stage. Luxman L-308 june 1973 1975 Luxurious mid-to-high-end amplifier preceding the more remembered L-309, inaugurating LUX's staple Linear Equalizer circuit. Linear Equalizer is a 5-step up or down "tilt" to the preset RIAA curve, rotating the 1kHz-centered frequency response up or down : more bass & less treble or more treble & less bass. There is too much compression and standardization today to justify a Linear Equalizer, but given the highly variable response curve of the recordings back then, this surely was uselful ! The regular tone controls are Lux's (other) staple NF controls with selectable center frequency. The circuit is a fully-complementary DC power amp section with dual-rail power-supply and 3-stage DC EQ circuit for the phono - Single-Stage, Duo-ßeta, plus-X and Circuit /S were for later years. Compared to the later L-309, the L-308 doesn't have the back pot to attenuate the MAIN in input level, nor the MIC inputs with pulll-on/off level pot, replaced by tape 1 i/o jacks. Bar power output, the rest is the same : 2-position low cut, 2-position high cut, low boost, stereo/L/R/Mono (L+R)/Reverse, 3-position phono 1 impedance selector, tuner input level pot and 2-way dubbing/monitoring. Replaced in late 1975 by... nothing : the L-309 took over for that segment of the Luxman marketing and its many (many) (many) (many) (confusing) (diverging) (overlapping) (market-dependent) segments. [B]Beautiful, simple, healthy, shiny 1970s nevertheless. [/B] RMS power output : 2x 55W (8 Ohm, continuous, both channels driven) 2x 65W (8 Ohm, continuous, single channel driven) Power bandwidth : 5Hz...50Khz (-3dB ; 0,03% THD) Frequency response : 10Hz...50Khz (± 1dB) THD : < 0,03% (8 Ohm, 55W) IMD : 0,04% (8 Ohm ; 55W) Residual noise : 0,5mV (86dB) Damping factor : 40 (8 Ohm) Input : 600mV / 40kOhm PRE section PRE section Frequency response : 10Hz...50Khz (line input ; -1dB) THD : < 0,03% (line input ; 1V) Inputs : 2,5mV / 90k-65k-50kOhm (phono 1) 2,5mV / 65kOhm (phono 2) 100mV / 150kOhm (aux 1 & 2) 100mV / 50kOhm (tuner) Max. input signal : 300mV (phono ; 1Khz) S/N ratio : > 65dB (phono 1 & 2) > 80dB (lines) Bass controls : ± 8dB / 100Hz ; 150Hz turnover ± 10dB / 100Hz ; 300Hz turnover ± 12dB / 100Hz ; 600Hz turnover Treble controls : ± 12dB / 10Khz ; 1,5Khz turnover ± 10dB / 10Khz ; 3Khz turnover ± 8dB / 10Khz ; 6Khz turnover Low cut filter : 20Hz or 70Hz / 6dB/octave High cut filter : 7Khz or 12Khz / 6dB/octave Low boost filter : 100Hz 6dB/octave Special brand-new control : 5-steps Linear Equalizer General Dimensions : 48,5 x 30 x 16,5cm Weight : 12,5kg. Listprice : 100,000¥ (1973) 120,000¥ (1974) [/QUOTE]
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