Sound Performance Lab PQ Recording Equalizer manual

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Table of contents for the manual

  • Page 1

    Owner‘ s Manual > PQ R ecording Equalizer[...]

  • Page 2

    2 Owner‘ s Ma nua l V 1.0, 5/ 2004 Sof tware ve rsion 01 6 R & D: Wolfg ang N eumann The info rmatio n in this document ha s be en caref ully ver ifi ed and is as sumed to b e cor rec t. H owever S ound Per for mance L ab ( SPL ) reser ve s the r igh t to modif y th e pro duc t descr ib ed in this manual at any t ime. Chang es wi thout not i[...]

  • Page 3

    3 Content Introduction ................................................................................................... 3 Installation .................................................................................................... 4 Te chnolog y ................................................................................................[...]

  • Page 4

    4 Installation BEF ORE SWITCH ING ON POWER S UPPL Y AND PQ, THE PQ M UST BE CONN ECTED TO THE POWER S UPPL Y WITH TH E SUPPL IED MU L TICOR E LE AD. P AY A T TENTION T O A SECURE CONNECT ION . The PQ and th e ex ternal p ower supply shoul d be sit uated aw ay f rom heat s ources and direc t sunlig ht . PQ an d power suppl y need suf fi cient air c[...]

  • Page 5

    5 SPL Hig h Gain Te c h n o l o g y SPL is cons tant ly pu shing analog sig nal proc essing t o its limit s by combining th e bes t po ss ible component s with p er fe c tly optimize d circuit desig n. A s our lates t achieve - ment in this ongoing pro cess , SPL ‘s High Gain Ser ies sur pa ss es th e hither to accepted limits of audio sign al pr[...]

  • Page 6

    6 Const ant Q an d prop or tional Q mode s Eac h freq ue ncy ban d co nsi sts esse ntially of t wo f ully par amet ric e qualizers : one for const ant Q mode an d one for prop or t ional (or va riable) Q m ode, sele c table p er band. The PQ is the fi rst eq ual ize r to of fer b oth mo des, en dowing it w ith double eq ualiz a- tion power fo r de[...]

  • Page 7

    7 F unctions and Operation Ampl itude Amp li tud e s ettin gs ar e free ly adjus table f rom -/ + 15 dB in propor ional mo de and f rom -/ + 20 dB in const ant Q mode. Fr e q ue n c y Eac h channel pr ovides fi ve f ull y par amet ric f re quenc y band s covering 10 Hz to 28 kHz. Each band overlaps it s neighbor by one oct ave a nd ca n b e indepe[...]

  • Page 8

    8 Audio inputs and outp uts are p rovided a s balan ced XL R connec tor s. Connec t th e included e x ter nal power supply to t he multi -pin s ocket in the upp er lef t corn er , ensuring t hat the conne ct ion is secure. Please note: To e n s u r e s e cure conne c tions, s tab le opera tion and opt imal audio qualit y, alway s use p rofes sional[...]

  • Page 9

    9 Input impedance (balanced): 20 kOhm (Welwyn pr ecision resistors; transformerless) Output impedance (balanced): ‹ 600 Ohm (CMR trimmers, transformerless) Overload resistance: +34 dB (Band 1-5 = ON, B/C = 0) Harmonic distortion: @-30 dBu: 0.2% @-20 dBu: 0.05% @0 dBu: 0.01% @+10 dBu: 0.002% @+30 dBu: 0.0005% S/N: -90 dBu (A-weighted; -88 dBu w/o [...]

  • Page 10

    10 W arranty SPL elec t ronic s GmbH ( hereaf ter c alled SPL ) produc t s are war ran ted only in the countr y wh ere purcha sed , through t he author ized SP L dist rib utor in that count r y, ag ainst defec t s in material or work manship. The specifi c per iod of t his limited warranty s hall be th at whic h is descri bed to th e orig inal ret[...]