Sound Performance Lab 2048 manual

Model 2048 Manual P arametric 5-Band Stereo Equalizer[...]

2 Manual Ster eo Q Model 2048 V ersion 1.0 – 5/2000 R & D: W olfgang Neumann The information in this document has been carefully v erified and is assumed to be correct. Howev er Sound P er formance Lab (SPL) reserves the right to modify the product described in this manual at any time. Changes without notice. T his document is the proper ty o[...]

3 Co n te n t s Introduction ................................................................................................................... 4 F eatures ........................................................................................................................... 5 Hookup ............................................................[...]

4 Introduction The Stereo-Q is a parametric 5-band stereo equalizer which ex cels particu- larly in two ways: • It is the first stereo equalizer in its class. • The serial-filter design based on the legendar y QURE equalizer filter gua- rantees the high tonal qualities for which SPL-products hav e become renowned . The continuously increasing n[...]

5 Hookup • Three fully parametric bands in accordance with the musically effective proportional-Q-pr inciple , Boost/Cut +/- 15 dB, Q 0.5 to 5; LOW band:10-250 Hz, MID band: 140 Hz-3,5 kHz, HIGH band: 940 Hz to 24 kHz. • Sub-Bass-EQ (Cut/Boost +/- 14 dB, up t o 200 Hz) with coil/capacitor filter network that produces a penetrating and lucid dee[...]

6 C onnections Rear front/ wiring Console inputs/ stereo returns or inser ts of any equipment 2 1 3 1 = GND , 2 = hot (+), 3 = cold (-) 1 2 3 Pin wiring XLR output Pin wiring XLR input 1 = GND , 2 = hot (+), 3 = cold (-) Pin wiring stereo jack connectors Tip = hot (+), Ring = cold (-), Sleeve = GND Console outputs, inser t sends Guitar amp K e yboa[...]

7 C onnections General A dvice C onnections Sockets Again, while Stereo Q’ s housing is EMV-proof and protects against HF-inter- ference , placement of the unit is ver y important. Please read hookup instruc- tions first (page 4). Before connecting the the unit or any other equipment turn off all power . Adjust the voltage setting on the back so [...]

8 Opera tion General A dvice Proportional-Q principle Low-, Mid- and High filters operate to the propor tional-Q principle. This means that maximum possible boost and cut is dependant upon the selected bandwidth. If the bandwidth is increased the measure of boost or cut (=amplitude) decreases automatically with the setting of the Cut/Boost control.[...]

9 Opera tion Po wer , Active , Sub Bass Pow e r The power switch is used to turn the unit on or off . The positive and negativ e paths of the power supply are separated in front of the po wer unit to ensure that the switched off unit is reliably separated from the mains current. The lamp in the power switch is pow ered directly from the mains curre[...]

10 Opera tion Low Coils additionally produce a more pleasant harmonic spectrum, which is especially impor tant for the precision and tangibility of bass sounds. The Sub Bass filter is exc eptionally suitable in presenting voluminous and powerful deep bass sound and produces a fat bass layer . In combination with the Low filter extensive possibiliti[...]

11 Opera tion Mid, High Mid The Mid filter covers a frequency range of 140 Hz to 3.5 kHz (F requency control). The frequency range of the M id filter reaching down to 140 Hz offers a problem-free access to sounds in this range. This means that a snare which operates often around 160 Hz can be processed with the Mid filter , leaving the L ow filter [...]

Air The Air filter comprises of a passive network of capacitor , resistor and coil in the same way as the Sub Bass filter . I t possesses a so called bell-characteri- stic with a center frequency at 17.5 kHz. At this frequency the maximal possible boost or cut is +/- 9 dB. The inductivity of the coil possesses advantageous acoustic proper ties in c[...]

13 P o wer Supply Specifications Built around a toroidal transformer , the power supply allows f or a minimal electromagnetic field with no hum or mechanical noise. The pow er supply's output side is filtered by an RC circuit to extract noise and hums caused by your pow er ser vice. 6000µf capacitors smooth out the positive and negative half [...]

14 Wa r r a n t y SPL electronics GmbH (hereaf ter called SPL) products are warranted only in the countr y where purchased , through the authorized SPL distributor in that country , against defec ts in material or w ork manship . The specific period of this limited warranty shall be that which is described to the original retail purchaser by the au[...]

15 C op y Master Production: ......................................................... Ar tist: ............................................ .......... Date: ........................... Sound Engineer: ......................................................[...]

16 Notes ..................................................................... ..................................................................... ..................................................................... ..................................................................... .............................................................[...]