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Related Manuals for Funk Tonstudiotechnik LAP-2.V3
Summary of Contents for Funk Tonstudiotechnik LAP-2.V3
- Page 1 OWNER'S MANUAL ANALOG PREAMPLIFIER...
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Page 2: Table Of Contents
TABLE OF CONTENTS __________________________________________________________________________________ TABLE OF CONTENTS Page IMPORTANT SAFETY PRECAUTIONS Page INTRODUCTION Page 4..5 OPERATION Page 6..7 AUDIO SIGNAL QUALITY Page 8..10 BLOCK DIAGRAM Page INSERTS Page ADJUSTABLE RECORD PATH Page CONNECTIONS and WIRING Page 14..15 MATCHING THE LEVELS Page 16..17 POWER SUPPLY... -
Page 3: Important Safety Precautions
Funk Tonstudiotechnik service personnel. If this device should be dropped or damaged, immediately turn off the power switch, disconnect the electric plug from the outlet, and have the device inspected by qualified Funk Tonstudiotechnik service personnel. Do not attempt to disassemble the internal parts or modify them in any way. If it should appear to be malfunctioning, discontinue use immediately and have it inspected by qualified Funk Tonstudiotechnik service personnel. -
Page 4: Introduction
Various devices can be connected using the LAP-2.V3 preamps, like Phono preamp, CD, CD-R, MiniDisc, DAT, iPod, sound card or DAB. -
Page 5: Operation
Now your amplifier need tot be repaired. If you damaged one input of the LAP-2.V3, the other 5 inputs will work continuing because the summing amplifier as whole will not stop working. - Page 6 4 stereo record outputs (RCA sockets) for recording analog sources. Working level is 0 dBu. Output impedance : 62 Ω. All the ins and outs are gold plated CINCH sockets. Headphone output : LAP-2.V3 features efficient stereo headphone amplifier for use with passive headphones. REC. L REC. L REC.
- Page 7 The integrated headphone amplifier can work with both lo and high impedance headphones with 6,3 mm stereo jack. Headphones out is easily accessible on front panel of the device. The Headphone amplifier of the LAP-2.V3 can drive passive headphones with range of impedance from 8 ...10 k Ω...
- Page 8 Why analog level control ? Passive analog level controller of LAP-2.V3 fundamentally does not have this problem. Also at lowest monitoring levels, as in the case described above, it is impossible to notice any significant limit to resolution. It depends in decisive degree, though, on amplifying path's after the level adjusting potentiometer.
- Page 9 The LAP-2.V3 has typical frequency response of below 1Hz...1 MHz -3 dB. Therefore even very short impulses of signal with high amplitude will be cleanly reproduced and will not press the LAP-2.V3 to its speed limit. Thanks to very fast amplification stages the transient inter-modulation distortion is practically non existent.
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Page 10: Audio Signal Quality
LAP-2.V3 is equipped with very wide band amplification stages, which ensure exceptional and super stable reproduction of signals and its phase. This clearly proves the following measurements. LAP-2.V3 is driven at 0 dB gain (input signal voltage = output signal voltage) and the source signal is square wave impulse generator. -
Page 11: Block Diagram
LAP-2.V3 BLOCK DIAGRAM ____________________________________________________________________________________________________... -
Page 12: Inserts
The 6-th input will serve as monitor for any signal passed through connected external device. Example : if, let's say, a CD player connected to input 2 of LAP-2.V3 is to be monitored both dry and processed by the external device, then button 2 should be pressed for record path. This way CD player's signal will be fed to external device's input. -
Page 13: Adjustable Record Path
Below picture shows an example of connections for LAP-2.V3. Inputs 1...5 will be normally used as inputs for 5 devices. 6-th input is connected with monitor output signal. This additional signal path is shown in blue or purple. - Page 14 „Noise and hum loops“. 7.3 WIRING SUGGESTION The following picture next side presents an example of typical wiring for LAP-2.V3 and a stereo power amplifier or active speakers as well as 6 additional devices (only analog audio connections are shown). In this configuration copying each source onto each receiving (recording) device is possible.
- Page 15 LAP-2.V3 WIRING SUGGESTION _____________________________________________________________________________________________________...
- Page 16 0 dB..+15 db. At factory the LAP-2.V3 is set at 0 dB gain. Fully counterclockwise position is roughly standard gain. To prevent damage to trimmer tip during turning, tip of the trimmer is blocked by groove. Setting trimmer above this position does not influence gain, but does not damages the trimmer.
- Page 17 Output level of LAP-2.V3 and other amplifiers depends on used signal sources. Best suited are those devices giving such strength of signal that level knob of LAP-2.V3 at highest required volume settings stays between 12 and 3 o'clock position. If the high volume is reached earlier, we recommend matching levels in power amp or active speakers.
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Page 18: Power Supply
Phones are dependent on Volume. This LAP-2.V3 MR version is beneficial for use with level metering. So the meter will be connected to Record out and monitors all selected signals independent from volume control. -
Page 19: Interior View
INTERIOR VIEW LAP-2.V3 _______________________________________________________________________________________________ Inside view onto audio main board with cover removed... -
Page 20: 11.0 Noise And Hum Loops
NOISE AND HUM LOOPS _______________________________________________________________________________________________ 11.0 NOISE AND HUM LOOPS : Hum and noise are often generated not only as result of interference with electrical or magnetic fields. Differences in ground potentials between connected devices e.g. Due to double ground connection, so „noise loops“... - Page 21 _______________________________________________________________________________________________________________________ Typical values below are measured using serial LAP-2.V3 on monitor output with typical resistance load of 10 kΩ at signal level +6 dBu and 0 dB gain (almost right maximum position of level knob, input trimmers also at O db), unless otherwise stated. Signal supply by Cinch socket. The exact configuration of the analyzer is given in each case in the left block.
- Page 22 ______________________________________________________________________________________________________________________ Typical values below are measured using serial LAP-2.V3 on monitor output with typical resistance load of 10 kΩ at signal level +6 dBu and 0 dB gain (almost right maximum position of volume knob, input trimmers also at 0 db), unless otherwise stated. Signal supply by Cinch socket. The exact configuration of the analyzer is given in each case in the left block.
- Page 23 TECHNICAL DATA LAP-2.V3 __________________________________________________________________________________________________________________ Unless stated otherwise, at monitor output, measured at 10 kΩ load, gain 0 db and input gain + 6 dBu, electric outlet voltage at 230V. Values in brackets () are measured at +18 dBu input gain. Audio analyzers used: R&S UPV and UPL as well as Audio Precision 2722 for noise, THD and THD+N measurement MONITOR and RECORDSIGNAL PATH : Max.
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Page 24: Interference Emission And Noise Sources
89/336/EWG and FCC, Part 15 : Electromagnetic radiation emitted by the device is limited in degree sufficient to using other electronic equipment as intended along with LAP-2.V3. The device has sufficient immunity to electromagnetic interference, so its operation will not be disrupted by... -
Page 25: Maintenance And Repair
MAINTENANCE AND REPAIR ____________________________________________________________________________________________ 12.1 Safety All repairs, maintenance and other actions on opened device can be performed only by qualified personnel with respect to existing regulations. Before removing cover the device must be turned off and power cable disconnected from electric outlet. During repair and maintenance, when the cover is removed and the device is turned on, no metallic (shining) elements can be touched both directly and using non-isolated tool, including metal semiconductors housing. -
Page 26: Declaration Of Conformity Page
Class of protection 1, EN60950; 1992 + A1/A2; 1993 EMV : EN55103-1 EN55103-2 Evaluation criterion B of the electromagnetic environment assessment E4 Berlin, 2012-02-02 Thomas Funk, president FUNK TONSTUDIOTECHNIK GERMANY 10997 BERLIN PFUELSTRASSE 1a ' 0049(0)30 38106174 7 0049(0)30 6123449 More information on our website : www.funk-tonstudiotechnik.de...
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