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- Hardware Manual
QSC DSP-30 Hardware Manual
Summary of DSP-30
Page 1
1 dsp-30 2.2 xlr rack-mount, 2 channel digital signal processor *td-000097-00* td-000097-00 rev.B hardware manual.
Page 2
2 explanation of graphical symbols the lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsu- lated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock t...
Page 3: Table of Contents
3 table of contents introduction product overview..................................................................4 front and rear panel illustrations and dimensions.................4 installation unpacking................................................................................................
Page 4: Introduction:
4 introduction: overview and illustrations the dsp-30 and signal manager software combine easy-to- use, customizable, two-channel dsp with simple operating- mode selection that requires only two buttons to operate. It can be used with all amplifiers and is housed in a 1-ru , 19-inch rack-mount steel...
Page 5: Introduction:
5 introduction: illustrations and dimensions dimensions.
Page 6: Installation:
6 support the rear for portable/mobile installations if the dsp-30 is to be transported while in a rack, we recommend supporting the rear of the chassis. This will help prevent the unit from being damaged from the increased mechanical stresses of portable and mobile use. The dsp- 30’s chassis includ...
Page 7: Installation:
7 installation: balanced audio connections connecting audio inputs and outputs all audio connections should be balanced to ensure the best performance. Unbalanced signals may be used if necessary; follow the wiring guidelines below for recommended unbalanced termination. The audio input jacks are fe...
Page 8: Installation:
8 installation: unbalanced audio connections connecting audio inputs and outputs unbalanced inputs can be used if required. If unbal- anced audio sources are used, it is preferable to use an ap- propriate audio transformer (or other unbalanced-to-balanced “converter”) to provide a bal- anced input. ...
Page 9: Installation:
9 installation: connecting audio inputs and outputs audio connections once the input and output cables have been properly wired, they can be connected to the receptacles on the rear panel of the dsp-30. Inputs- input jacks are “combo” style. They accept either male xlr or 1/4-inch diameter trs phone...
Page 10: Installation:
10 connecting to the rs-232 port connect to the rs-232 port using the 9-pin serial data cable (included in the shipping box). Orient the db-9 plug correctly, insert the plug fully into the rs-232 port and finger-tighten the retaining screws. The cable length should be 25 feet or less. “null-modem” t...
Page 11: Installation:
11 installation: system requirements and software installation software installation 1. Insert the qsc signal manager cd into your drive (typically drive “d:”). If your computer has autorun enabled, the installation will start automatically after several seconds. If it does not, then proceed to step...
Page 12: Use:
12 ch 1 input, ch 2 input- these female xlr-combo jacks are the line-level audio inputs to the unit. Trs or xlr connectors may be used. They are electronically balanced with an input impedance of 8.3k ohms. If used in an unbalanced configuration, the input impedance is 3.7k ohms. Input sensitivity i...
Page 13: Use:
13 use: control, indicator, and connector descriptions rs-232- this db-9 female jack is for attaching the serial cable between the unit and the computer. Use this connection for loading your dsp configurations from the computer to the dsp and for “real-time” configuration tuning with signal manager ...
Page 14: Use:
14 use: general use guidelines and preset description note! The factory setting for all eight presets is wire-through. Signals are passed from input to output without any processing. You may select configurations from the sample files (*.Cfg) within signal manager or create your own. Factory presets...
Page 15: Use:
15 the dsp-30 must be loaded with your desired presets using the signal manager program before use. Test all new presets for expected behavior at low power levels to avoid inadvertently damaging speaker systems. The dsp-30 has eight preset memories numbered 1 through 8. Presets are dsp configuration...
Page 16: Use:
16 use: how to recall a preset from the front panel to recall a preset- 1- press the browse key until the desired preset number shows in the display. The selection display flashes until step 2 (below) is completed. 2- press the accept key to activate the selected preset in the dsp. Once the preset i...
Page 17: Use:
17 to lock the front panel buttons (browse and accept pushbuttons)- 1- press the accept button and hold it down for at least three seconds. 2- the “lock” indicator will illuminate. 3- the browse button is disabled. Front panel display- example shows preset 7 in “unlocked” and “locked” state. Locked ...
Page 18: Use:
18 use: contact closure feature contact closure feature the contact closure feature is used to trigger gain changes in the dsp. Any configuration that uses one or more switched gain objects (see signal manager software help file ) can take advantage of this feature. The contact closure will trigger ...
Page 19: Use:
19 use: rs-232 pinout pin signal description 1 dcd 2 td 3 rd 4 dtr 5 gnd 6 dsr 7 rts 8 cts 9 contact closure rs-232 pinout: the diagram below shows the pin assignments for the female rs-232 connector on the dsp. *note! Pin 9 is used for contact closure input. This pin is not normally used by rs- 232...
Page 20: Use:
20 tri-amped pa cabinets with subwoofer (refer to illustration at right) use: application example this is highly generalized, but shows the main idea in cre- ating larger systems. In this example, the audio source material is connected to the inputs of all four dsp’s. Take care to keep right and lef...
Page 21: Use:
21 use: application example tri-amped pa cabinets with subwoofer: sample application diagram.
Page 22: Specifications
22 specifications frequency response 20 hz–20 khz ±0.4 db at 1db below full scale input voltage (all sensitivities) distortion group delay 1.00 milliseconds dynamic range >95db unweighted, 1.5v, 4v and 9v input sensitivity aes-17 -60db method >93db unweighted, 18v input sensitivity polarity in-phase...
Page 23: Specifications
23 physical chassis type steel (chassis & covers) height 1.73 inches width 18.9 inches (including rack ears) depth 14.9 inches (including rear ears) 13.7 inches (excluding rear ears) weight 9.5 lb. (4.3 kg) net 12.5 lb. (5.7 kg) shipping mounting stand-alone or rack mount operating temperature 0° to...
Page 24
24 architect’s and engineer’s specification the digital signal processor (dsp) shall provide two independent channels of dsp for signal delivery to all professional power amplifiers. Input and output sensitivity shall be adjustable to accommodate consumer and pro audio signal levels. Output peak lim...
Page 25
25 maintenance, warranty & qsc contact information cleaning the faceplate and chassis can be cleaned with a soft cloth and nonabrasive, mild cleaning solution. Products like simple green and windex work well. Do not use powders or scrubbing pads of any type as they are usually abrasive and will perm...
Page 26: Notes
26 notes.
Page 27: Notes
27 notes.
Page 28
28 1675 macarthur boulevard costa mesa, california 92626 usa ph: (714) 754-6175 fax: (714) 754-6174 © copyright 2001, qsc audio products, inc. Qsc® is a registered trademark of qsc audio products, inc., costa mesa, ca “qsc” and the qsc logo are registered with the u.S. Patent and trademark office.