Page 3 - S AV E T H E S E I N S T R U C T I O N S !
WARNING: When using electrical products, basic cautions should always be followed, including the following: 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth. 7. Do not blo...
Page 4 - important precautions
1 Save the carton and packing materials! Should you ever need to ship the unit,use only the original factor y packing. For replacement packaging, call Crest Audio’sCustomer Service Department directly. 2 Read all documentation beforeoperating your equipment. Retain all documentation for future refer...
Page 5 - table of contents
p. 1 table of contents 1 2 3 4 5 6 7 how to use this manual p.2 introduction p.3 installation p.5 unpackingmountingcooling and ventilationpoweringmaintenance features overview p.9 front panelrear panel operation modes p.15 stereoparallelbridged connections p.17 inputoutput safety p.21 tourclass prot...
Page 6 - CD owner’s manual; how to use this manual; conventions
p. 2 CD owner’s manual how to use this manual 1 conventions terms official Crest Audio features and each indicator or control on the amplifier will appear as: terms actions specific actions or selections the user can execute will appear as: actions tasks are broken down into steps 123 warnings indic...
Page 7 - introduction; welcome; linear-toroid power supply; protection features to
p. 3 introduction 1 welcome Congratulations on your purchase of a new CD Series professional power amplifier and thank you for your confi-dence in Crest Audio products. You are among the growing number of audio professionals who have made CrestAudio one of the world’s leading suppliers of profession...
Page 9 - installation; unpacking; AC
p. 5 installation 2 unpacking mounting cooling and ventilation powering maintenance / what to do with the shipping carton / proper rack-mounting technique / keeping the amplifier cooled / required AC line voltages / routine maintenance practices
Page 10 - If the packing materials are in good condition, please save them.; mounting; CD dimensions
CD owner’s manual p. 6 installation 2 unpacking Please inspect the amplifier carefully immediately after unpacking. If you find any dam-age, notify your supplier/dealer immediately. Only the shipper may file a damage claimwith the carrier for damage incurred during shipping. Be sure to save the cart...
Page 11 - cooling and ventilation; Keep this unit 8” from any combustible surface on all sides.; powering; Option 1; Option 2; nominal 230Vac 50Hz for rated power output; maintenance
2 p. 7 installation Make cer tain that thereis enough space aroundthe front and rear of theamplifier to allow theheated air to escape.When mounting in a rack,tr y to avoid using doorsor covers on the frontand rear of the enclosure;the exhaust air must notbe impeded suggestion In racks with closed ba...
Page 13 - features overview; front panel; location of connectors and controls
p. 9 features overview 3 front panel rear panel / location of connectors and controls / legend of panel symbols
Page 14 - CD shown
p. 10 CD owner’s manual features overview 3 CD shown 1 2 3 4 7 5 6 9 8
Page 15 - Two front-panel mounting holes are provided on each mounting ear.
p. 11 features overview 3 front panel 1 Rack Mounting Ears Two front-panel mounting holes are provided on each mounting ear. 2 Channel Level attenuators Two input attenuators adjust level for their respective amplifierchannels in stereo and in parallel modes. In Bridged Mono mode, thechannel A atten...
Page 16 - rear panel; IEC power connector; Accepts a standard IEC terminated power cable; Breaker; rear panel legend
p. 12 features overview 3 2 3 1 2 1 3 rear panel 1 IEC power connector Accepts a standard IEC terminated power cable 2 Breaker Resettable circuit breaker - no fuses are used. Breaker can trip due toa power surge or over-voltage condition. If it trips once, reset it. If it continues to trip, the ampl...
Page 17 - Output connections
p. 13 features overview 3 rear panel 4 Output connections Speakers can be connected via the high current binding posts andthe industry-standard Speakon (NL-4) connectors. Binding posts: One pair (Red- hot, Black- ground) per channel. Speakons - One connector for each channel.The Speakonconnector for...
Page 19 - operation modes; stereo; choosing the appropriate mode
p. 15 operation modes 4 stereo parallel bridged / choosing the appropriate mode / switching between operation modes / special considerations when using bridged mode
Page 21 - input; proper wiring schemes for connectors: speakon
p. 17 connections 5 input XLR 1/4” TRSCombi output Binding PostsSpeakons / proper wiring schemes for connectors: speakon binding post / correct signal paths: stereo, parallel and bridged
Page 22 - inputs; CD amplifiers are configured standard with pin 2 hot on; outputs; female; XLR; bridged mono
p. 18 CD owner’s manual connections 5 inputs CD amplifiers are configured standard with pin 2 hot on XLR inputs. outputs Speakers are connected using the high-current five-way binding posts,speakon connectors, or both. see— operation modes Ver y high current is available at the outputs. Please conne...
Page 23 - stereo mode; parallel mode; five-way binding post connectors; bridged mono mode; five-way binding post connectors
p. 19 connections 5 2 3 1 2 1 3 2 3 1 2 1 3 2 3 1 2 1 3 stereo mode five-way binding post connectors parallel mode five-way binding post connectors bridged mono mode five-way binding post connectors
Page 24 - speakon output connectors; speakon output connectors
p. 20 Speaker + to PIN 1 +Speaker - to PIN 1 - 2+ 1- 2- 1+ 2 3 1 2 1 3 A + - B + - Speaker + to PIN 1 +Speaker - to PIN 1 - 2+ 1- 2- 1+ 2 3 1 2 1 3 A + - B + - 2 3 1 2 1 3 + - 1+ Speaker + to PIN 1 +Speaker - to PIN 2 + 2+ 1- 2- stereo mode speakon output connectors parallel mode speakon output conn...
Page 25 - safety; user; the owner’s role in amplifier safety
p. 21 safety 6 user responsibility speaker protection TourClass / the owner’s role in amplifier safety / protecting your speakers / description of TourClass protection features
Page 26 - recommended speaker cabling; user responsibility; see the inside-front cover
p. 22 CD owner’s manual safety 6 speaker protection All loudspeakers have electrical, thermal and physical limits which must be observed to pre-vent damage or failure. Cone or compression drivers can be damaged (sometimes to the pointof failure) from excessive power, low frequencies applied to high ...
Page 27 - TourClass
p. 23 safety 6 TourClass ® protection Just like Crest Audio’s highly acclaimed Pro series amps, CD series amps incorporateTourClass protection features. Derived from Crest Audio’s extensive experience with theworld’s largest sound rental companies, the TourClass group of circuits sets the industryst...
Page 29 - when to get support; support
p. 25 service and support 7 / when to get support / ways to contact Crest Audio support contact us
Page 30 - customer service; customerserve; technical support; techserve; web site
p. 26 support In the unlikely event that your amplifier develops a problem, it must bereturned to an authorized distributor, service center, or shipped directly toour factory. To obtain service, contact your nearest Crest Audio Service Center,Distributor, Dealer, or any of the worldwide Crest Audio ...
Page 31 - CD Series; specifications
p. 27 Stereo power 8 Ω 4 Ω 2 Ω 1 Bridged mono power 8 Ω 4 Ω 1 Maximum output voltage rms each channel Frequency response 1W @ 8 Ω Power bandwidth @ rated power Damping Factor Input cmrr Input sensitivity for full rated output power Input impedance Hum and noise (A-weighted below rated power) Crossta...
Page 32 - block diagram
p. 28 A ATTENUATOR OUTPUT STAGE 1 3 2 1 3 2 OUTPUT STAGE MODE SWITCH A B C A: PARALLEL B: STEREO C: BRIDGED B ATTENUATOR Channel A Inputs 1/4 TRS Female 3-Pin XLR 1/4 TRS Female 3-Pin XLR Channel A Outputs 5-Way Binding Posts Neutrik Speakon 5-Way Binding Posts Neutrik Speakon Channel B Inputs Cha...
Page 33 - optional handle installation
optional handle installation c p. 29 The CD amplifiers can be outfitted with optional handles. This option requires (2) CD series handles(P/N C32000010) and (4) #8-32 1/2” undercut flat head screws (P/N C38000008). You may orderthese from your dealer or directly from Crest Audio.
Page 34 - meters
p. 30 stranded cable length 0.3 mm 2 0.5 0.75 1.5 2.5 4.0 2.9% 1.74 1.16 0.58 0.35 0.22 5.6% 3.4 2.3 1.16 0.70 0.44 10.8% 6.7 4.5 2.3 1.39 0.87 0.5 mm 2 0.75 1.5 2.5 4 6 4.3% 2.9 1.45 0.87 0.55 0.37 8.2% 5.6 2.9 1.74 1.09 0.73 15.5% 10.8 5.6 3.4 2.2 1.45 0.5 mm 2 0.75 1.5 2.5 4 6 8.24% 5.6 2.9 1.74 ...
Page 35 - feet
p. 31 stranded cable length 18 AWG 16 14 12 10 0.81% 0.51 0.32 0.20 0.128 1.61% 1.02 0.64 0.40 0.25 3.2% 2.0 1.28 0.80 0.51 18 AWG 16 14 12 10 1.61% 1.02 0.64 0.40 0.25 3.2% 2.0 1.28 0.80 0.51 6.2% 4.0 2.5 1.60 1.01 18 AWG 16 14 12 10 8 6.2% 4.0 2.5 1.60 1.01 0.60 11.9% 7.7 5.0 3.2 2.0 1.20 22% 14.6...
