Subscribe to Our Youtube Channel
Related Manuals for Lake People PHONE-AMP G111 Mk II
Summary of Contents for Lake People PHONE-AMP G111 Mk II
- Page 1 HEADPHONE AMPLIFIER PHONE-AMP G111 Mk II USER´s MANUAL User´s Manual G111 Mk II August 2023, Fried Reim Page 1...
-
Page 2: Table Of Contents
Among others, the first German-made 20-bit A/D and D/A converters were developed by Lake People in the early nineties of the past century. Page 2 User´s Manual G111 Mk II August 2023, Fried Reim... - Page 3 Lake People on-line shop. … and if it doesn't work like it should ? Lake People devices are covered by a 24-month warranty. In case of any malfunction during this period, they can be shipped to the manufacturer directly.
-
Page 4: Safety Instructions
General Safety Instructions / WARNING For your protection, please read the following: Water, Liquids, Moisture: This appliance should not be used near water or other sources of liquids. Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings. - Page 5 Mains Fuse: The mains fuse of this appliance is soldered in place and accessible from the inside only !! A blown fuse may indicate an internal problem and should be replaced during qualified servicing or repair work !! Switchable Power Supply: Connect this unit to the power source indicated on the equipment rear panel only to ensure safe operation !! This unit is provided with an internally settable mains supply...
-
Page 6: The Earth / Grounding Concept
The Earth / Grounding Concept General GROUND-LIFT Jumper - accessible from the inside. Mind the SECURITY INSTRUCTIONS !! Ex-works this jumper is set to the LIFT position. The internal ground potential is “lifted” by means of this jumper. As a result, the interconnection for DC voltages and lower frequencies (<... -
Page 7: Connection / Connectors
XLR GROUD-LIFT Jumper (Page 18) (accessible from the inside. Mind the SECURITY INSTRUCTIONS !! ): G(ROUND): Ex-works all jumpers are set to "G" (ground) position. Pin 1 is connected to the internal ground reference. High frequency interference is deflected to the case via a 100 nF capacitor. L(IFT): The interconnection between Pin 1 and ground is open. -
Page 8: General
Delayed switch-on/instant switch-off of headphone outputs Thermal overload protection toroidal transformer and large smoothing capacity Despite its compact dimensions, the PHONE-AMP G111 Mk II offers optimum flexibility and highest output power. Reliability even under Page 8 User´s Manual G111 Mk II August 2023, Fried Reim... -
Page 9: The Power Supply
THE CASE of the PHONE-AMP G111 Mk II including the front and back panels is made is made from aluminium. Due to the rugged materials used, the unit is well protected against mechanical damage. -
Page 10: Operation
THE INPUTS Balanced Signals XLR The signal inputs on the rear are Input Wiring: equipped with XLR female-type sockets, allowing balanced signal injection. They PIN 1 are marked "BAL IN LEFT" and "BAL IN PIN 2 (+) PHASE RIGHT" respectively. PIN 3 (-) PHASE For unbalanced signals, two RCA connectors are provided. -
Page 11: Volume Control
VOLUME CONTROL The “VOLUME”-control pot determines the headphone volume for both left and right channel. THE AMPLIFIERS The input signals are fed to a stereo amplifier specially designed for this purpose. Its operating range covers nearly DC to 200 kHz (-3dB corner frequency) in order to ensure optimum linearity within the audible frequency spectrum. -
Page 12: Things To Know
Things to know … Why makes it sense to make such huge efforts ? A headphone amplifier is a device designed to condition audio signals with regards to the very specific requirements of headphones. This doesn't sound too spectacular at the first glance and can be achieved relatively easily. - Page 13 Why is a low output impedance essential ? When actuated, electro-dynamic systems respond with a counterforce. When the voice coil of a headphone has been displaced by the signal, an (error-) current will be induced when it swings back to its initial position. This current must be suppressed as far as possible, which is effected best if the amplifier's output impedance is the lowest possible.
-
Page 14: Disposal
DISPOSAL Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with separate collection systems) This symbol on the product or on its packaging indicates that this product shall not be treated as household waste. Instead, it shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment. -
Page 15: Internal Settings
This can be avoided by "soft" or “hard” grounding of the PHONE-AMP G111 Mk II: It is achieved by setting the ground lift jumper to either the “LIFT” or the “GND” position. - Page 16 Why does PRE-GAIN make sense ? Two extreme examples (with the G111 Mk II at +8 dB gain (x 2,5), volume control set to full): 1st example: The (pre-) amplifier provides 4V output voltage, whereas the headphone requires only 2V for 100dB sound pressure level. With the control fully turned up, the G111 Mk II would deliver 10V output at +8 dB gain.
-
Page 17: Pre-Gain
... all users expect maximum quality at lowest noise and distortion ... Therefore the circuitry must be able to adapt to these conditions, since headphones won´t ! PRE-GAIN THAT'S WHAT WE CALL The adjustment is made in the preamp section, where the signal can be boosted or attenuated in five 6-dB steps. - Page 18 PRE GAIN settings: see pages 16/17 Page 18 User´s Manual G111 Mk II August 2023, Fried Reim...
-
Page 19: Settings On The Pcb
TECHNICAL DATA PHONE-AMP G111 Mk II All measurement RMS unwtd., 20 Hz - 20 kHz, Pre-Gain set to 0 dB Inputs: 2 x XLR female bal, 2 x Cinch, unbal Max. Input Voltage: + 21 dBu, Impedanz 10 kOhms Input Impedance: 10 kohms Nom.
Need help?
Do you have a question about the PHONE-AMP G111 Mk II and is the answer not in the manual?
Questions and answers