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Black Cube Linear

Headphone amplifier / Single Source Preamp

User manual

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Содержание Black Cube Linear

Страница 1: ...Black Cube Linear Headphone amplifier Single Source Preamp User manual ...

Страница 2: ...the power cord If the cord is damaged fire or electrical shock may result In particular it is possible that one might accidantally place a heavy object on a carpet that covers the cord definitely avoid these situations Do not install the Black Cube Linear in a place where it might be exposed to oil smoke or steam for example near a cooking table or humidifier Otherwise fire or electrical shock may...

Страница 3: ...e an extremely loud noise could damage your loudspeakers or even your hearing If you plan not to use the Black Cube Linear for a long period of time such as when you are on vacation remove the power plug from the AC outlet Otherwise a fire could possibly result If any abnormality occurs while using the Black Cube Linear remove the plug from the AC outlet In this case first shut off the power ampli...

Страница 4: ...nce that need a higher signal voltage and low impedance types which need more current for optimal sonic results Just connecting a headphone to any given headphone output without considering the headphone s electrical characteristics will most likely yield dissatisfactory results Impedances of dynamic headphones can vary from 30 Ohms to 600 Ohms Transferred to loudspeakers this would result in impe...

Страница 5: ...of the headphone From this power rating the maximum voltage can be derived If the voltage will be higher then the voice coils of the headphones will be destroyed Today most headphones allow hearing levels well above a secure level for the listener This means that a standard pair of cans might survive extremely high levels without any degradation of long term performance but the hearing of the list...

Страница 6: ... 0 033mW 0 016mV 0 5V 7 8mW 4 2mW 2 1mW 0 83mW 0 42mW 1V 31 3mW 16 7mW 8 3mW 3 3mW 1 7mW 2V 125mW 66 7mW 33 3mW 13 3mW 6 7mW 3V 281mW 150mW 75mW 30mW 15mW 4V 500mW 267mW 133mW 53mW 27mW 5V 781mW 420mW 210mW 83mW 42mW 6V 1 13W 600mW 300mW 120mW 60mW 7V 1 53W 817mW 408mW 163mW 82mW 8V 2W 1 06W 533mW 213mW 107mW 9V 2 53W 1 35W 680mW 270mW 135mW Voltage needed for 1mW power units Headphone impedances ...

Страница 7: ...V 2mW Ultrasone HFI 15G 32 94 716mV 4mW HFI 550 64 100 252mV 1mW HFI 700 75 94 548mV 4mW It can easily be seen that even among the products of one manufacturer there can be huge differences as far as impedance and or effectivity are concerned This makes it very important that you either choose headphone and headphone amplifier as a matching combination or go for a headphone amplifier with switchab...

Страница 8: ...same signal amplitudes can result in very different volume levels connected to power amps or to headphones 3 Headphone output 2 6 3mm headphone jack for common headphones When a headphone is connected to this headphone output the line output will not be muted This enables you to listen to headphones and your loudspeakers at the same time You can connect to headphones of the same type at the same t...

Страница 9: ...ively connected to the input connectors so that you benefit greatly when you use the unit as single source preamp 3 Power switch This switch separates the primary coil of the power supply transformer from the mains voltage There is no stand by mode 4 Fuse holder Fuse holder for the primary fuse In case of replacement you must use the same type 100V 120V AC 630mA slow or T 200V 240V AC 315mA slow o...

Страница 10: ...a setting which at the maximum potentiometer position turned clockwise results in a volume level that is slightly higher than your normal listening habit so that you have a bit of reserve with lower level signals You also make sure that extraordinary high levels can be avoided much easier Gain with volume turned to maximum Switch 1 Switch 2 0dB Off Off 10dB On Off 18dB Off On 20dB On On The gain s...

Страница 11: ...m Channel separation 70dB 10kHz Interchannel mismatch 0 3dB with volume to maximum Output power 300 Ohm 200mW 60 Ohm 400mW Output imedance Line Out 50 Ohms Phones Out 5 Ohms Connectors audio Neutrik headphone jacks 6 35mm with gold plated contacts 1x muting line out 1x parallel RCA connectors with gold plated contacts and Teflon isolation Mains connector IEC receptable Fuse 100 120V AC 500mA slow ...

Страница 12: ..._____________________________________________________________ Notes Manufacturer s address Lehmannaudio Dipl Ing Norbert Lehmann Richard Zanders Str 54 51469 Bergisch Gladbach Tel 49 2202 280 62 40 Fax 49 2202 280 62 39 email info lehmannaudio de Web www lehmannaudio de www headphone amplifier com ...

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