Instruction/ maintenance manual of the product 9844 Sound Performance Lab
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Model 9844 Manual V acuum T ube Microphone Preamplifier.
By Hermann Gier and W olf gang Aichholz V ersion 1.4 - 5/2000 The information in this document has been carefully verified and is assumed to be correct. Howev er Sound Performance Lab (SPL) reser v es the right to modify the product described in this manual at any time.
3 Co n t e n t s F oreword .................................................................................................. 3 Introduction ............................................................................................ 4 Hookup ........
4 The GoldMike is another jewel in the SPL T ube series. Like all SPL tube processors , the GoldMike combines the unique sonic qualities of tube technology with state-of-the-art manufac turing, meti- culous component selection and high-tech conception.
5 Carefully select a place for setting up the GoldMik e. The unit should be situated awa y from heat sources and direct sunlight. A void installing y our GoldMik e in environments exposed to vibra- tions, dust, heat, cold or moisture .
6 The following graph shows the correct wiring for connecting un- balanced signals to the balanced XLR connectors. VERY IMPORTANT Phantom power must be switched off before unbalanced signals are conne.
7 Adv antages of the SPL dual-stage preamplifier The GoldMike's engine is the newly designed SPL dual-stage preamplifier . During the first stage of amplification the signal is amplified by a semi-conductor circuit while the second stage applies tube electronics.
8 Sound optimization already during r ecording: FLAIR circuitry The FLAIR circuitry enhances the presence of vocals and acoustic instruments, FLAIR makes these elements cut better through a mix.
9 C ontrol elemen ts The MIC GAIN knob controls the input signal's amplific ation. The range extends to 72 dB of gain. The levels should be adjusted f or a meter reading around 0 VU to get the best signal-to-noise per for- mance.
10 HIGHP ASS 5 F ilters problematic frequen- cies (rumble, etc.) Tips on how to use the phase reverse 30 dB pad By pressing the REVERSE button, you invert the microphone's polarity . When the REVERSE button is released (status LED off ) the signal is in phase.
11 T rue to SPL's philosophy , the GoldM ike features the sound enhan- cing FLAIR circuitr y . More than simply a frequenc y-range manipu- lating tool, the FLAIR circuitr y is also a timebase shif ting (phase) device that enhances a sound's harmonic content.
12 Audio F requency Response: ...................................... 10 Hz - 100 kHz, +/- 0.5 dB Common-Mode-Rejection at -20 dBu: ...... 1 kHz: -80 dBu ... 10 kHz: -73 dBu Harmonic Distortion Input level Gain THD -30 dB ..............................
13 Wa r r a n t y SPL electronics GmbH (hereaf ter called SPL) products are warranted only in the country where purchased, through the authorized SPL distributor in that country , against defects in material or workmanship.
An important point after buying a device Sound Performance Lab 9844 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Sound Performance Lab 9844 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Sound Performance Lab 9844 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Sound Performance Lab 9844 you will learn all the available features of the product, as well as information on its operation. The information that you get Sound Performance Lab 9844 will certainly help you make a decision on the purchase.
If you already are a holder of Sound Performance Lab 9844, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Sound Performance Lab 9844.
However, one of the most important roles played by the user manual is to help in solving problems with Sound Performance Lab 9844. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Sound Performance Lab 9844 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
