Crest Audio CD 1500 Скачать руководство пользователя страница 32 | Manualshive

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background image

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

Channel B

Outputs

SEE SECTION 5 FOR

OUTPUT CONNECTION DETAILS

GAIN

SWITCH

0.775V

0.775V

X20

X40

X20

X40

A

B

VU METER

THERMAL

ACL, IGM,

DC PROTECT,

AUTORAMP

OUTPUT

RELAY

OUTPUT

RELAY

VU METER

THERMAL

ACL, IGM,

DC PROTECT,

AUTORAMP

-

CD owner’s manual

block diagram

b

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Содержание CD 1500

Страница 1: ...CD Power Amplifier Owner s Manual CD ...

Страница 2: ... symbole est utilisé dans ce manuel pour indiquer à l utilisateur la présence d une tension dangereuse pouvant être d amplitude suffisante pour constituer un risque de choc électrique Ce symbole est utilisé dans ce manuel pour indiquer à l utilisateur qu il ou qu elle trouvera d importantes instructions concernant l utilisation et l entretien de l appareil dans le paragraphe signalé ATTENTION Risq...

Страница 3: ... Shock Hazard and Grounding Connect only to a power supply of the type marked on the unit adjacent to the power supply cord 16 If this product is to be mounted in an equipment rack rear support should be provided 17 Exposure to extremely high noise levels may cause a permanent hearing loss Individuals vary considerably in susceptibility to noise induced hearing loss but nearly everyone will lose s...

Страница 4: ... or smoky environment the unit should be periodically blown free of foreign matter Do not use the unit near stoves heat registers radiators or other heat producing devices ƒ The power cord of equipment should be unplugged from the out let when left unused for a long peri od of time Service Information Do not remove the cover Removing the cover will expose you to potentially dangerous voltages Ther...

Страница 5: ...eatures overview p 9 front panel rear panel operation modes p 15 stereo parallel bridged connections p 17 input output safety p 21 tourclass protection precautions user responsibility service and support p 25 support contact us registration specifications p 27 block diagram p 28 optional handle installation p 29 wire gauge charts p 30 b c d a contents appendices ...

Страница 6: ...are broken down into steps 1 2 3 warnings indicators tips see see refers to other sections of the manual containing supplementary information on the current topic or a related issue note note supplementary feature information Preferred methods Helpful hints Feature insights Procedures not to attempt Issues or hazards to keep in mind when operating the equipment a What to look for on the equipment ...

Страница 7: ...id power supply A traditional linear power supply is used in the CD Series Because of the amplifier section s efficiency approx 80 the transformer does not need to be as big or as heavy This gives the CD Series an advantage in deliver ing more power in a more compact package The efficiency of the output stage also gives the power supply the ability to handle heavy duty cycles without compromising ...

Страница 8: ......

Страница 9: ... 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 ...

Страница 10: ...ntage of the original factory packing materials in order to avoid unnecessary damage mounting All CD Series amplifiers mount in standard 19 inch racks and occupy two rack spaces Four front panel mounting holes are provided on each amplifier Rear mounting ears give additional support and use of rear supports is highly recommended in all mobile and touring sound systems Handles are available as an o...

Страница 11: ...rcuit will activate and open the output relays allowing the amplifier to cool to a safe temperature Normal operation will resume once the amplifier cools to a safe level Thermal protect activation only occurs under extreme thermal conditions and is not part of normal operation powering Unless otherwise specified when ordered CD amplifiers are supplied factory set to following voltage options Optio...

Страница 12: ......

Страница 13: ...p 9 features overview 3 front panel rear panel location of connectors and controls legend of panel symbols ...

Страница 14: ...p 10 CD owner s manual features overview 3 CD shown 1 2 3 4 7 5 6 9 8 ...

Страница 15: ...tions checked for shorts and proper load impedance If overheating is suspected allow the amplifier to cool and check that the airflow is not impeded 4ACL IGM This Red LED illuminates when either theACL or IGM protection circuitry is engaged See Section 6 Tourclass Protection for more information on these Crest exclusive features 5 24 18 6 0dB The first three LEDs 24 18 6 are Green and the last led...

Страница 16: ...he speed of the fan during high temperature conditions Air enters through the rear of the amp and exits through the front grill Be sure to allow adequate air flow from the rear of the rack the amp is mounted in rear panel legend input connection XLR connector polarity TRS connector polarity bridged mono mode parallel mode stereo mode chassis ground lifted position chassis ground grounded position ...

Страница 17: ... for Stereo Parallel or Bridged Mono operation The default factory setting is Stereo See operation modes 8 Input sensitivity switch This three position switch allows the user to select the input sensitivity to 775v 0 dBu X20 or X40 for full rated output power The default factory setting is X20 Never connect a hot red output to ground or to another hot red output a Do not adjust the mode selection ...

Страница 18: ......

Страница 19: ...p 15 operation modes 4 stereo parallel bridged choosing the appropriate mode switching between operation modes special considerations when using bridged mode ...

Страница 20: ...of each other bridged Bridged mode straps both amplifier channels together to make a single channel monaural amplifier One channel pushes and the other pulls equally increasing the power output over that of either channel alone see Specifications Signal is applied to the ChannelA input only Channel A s attenuator is used to control signal level Use extreme caution when operating the amplifier in B...

Страница 21: ...p 17 connections 5 input XLR 1 4 TRS Combi output Binding Posts Speakons proper wiring schemes for connectors speakon binding post correct signal paths stereo parallel and bridged ...

Страница 22: ... see operation modes Very high current is available at the outputs Please connect your output cable to the and terminals of each sec tion precisely as shown a stereo parallel female XLR bridged mono TRS pinouts A and B channel Speaker to PIN 1 Speaker to PIN 1 A channel also has B channel to PIN 2 B channel to PIN 2 Note This is useful in bi amp monitor situations A Channel ONLY Speaker to PIN 1 S...

Страница 23: ...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 ...

Страница 24: ...r to PIN 1 Speaker to PIN 2 2 1 2 stereo mode speakon output connectors parallel mode speakon output connectors bridged mono mode speakon output connectors CD owner s manual connections 5 The Channel A Speakon has the signal from channel B present on PIN 2 and Pin 2 This is handy in situations where the output is dri ving bi amped monitors a ...

Страница 25: ...p 21 safety 6 user responsibility speaker protection TourClass the owner s role in amplifier safety protecting your speakers description of TourClass protection features ...

Страница 26: ...ied to the speakers The amplifier will however allow normal musical transient bursts to pass Of course when the amplifier does clip it is operating at its maximum output power Note that some speaker systems are packaged with proprietary processors that have power limiting circuits and therefore should not require additional limiting Do not drive any low frequency speaker enclosure with frequencies...

Страница 27: ... the channel gain to a safe level This gain control circuit is inaudible in normal use In addition if extreme and sustained low impedance is encountered the amplifier s output relay will open AutoRamp Auto Ramp operates every time the amplifier is turned on or is reactivated after a protect condition is corrected This exclusive CrestAudio feature gradually increases gain to the atten uator setting...

Страница 28: ......

Страница 29: ...p 25 service and support 7 when to get support ways to contact CrestAudio support contact us ...

Страница 30: ...e Crest Audio offices For those with Internet access please visit the CrestAudio web site contact us customer service phone 201 909 8700 USA fax 201 909 8744 USA email customerserve crestaudio com technical support phone 201 909 8700 USA fax 201 587 0550 USA email techserve crestaudio com web site www crestaudio com mail CrestAudio Inc 16 00 Pollitt Drive Fair Lawn NJ 07410 USA For replacement pac...

Страница 31: ...Hz 1 1dB 20Hz 20kHz 1 1dB 400 1 8Ω 400 1 8Ω 400 1 8Ω 400 1 8Ω 60dB 1 kHz 60dB 1 kHz 60dB 1 kHz 60dB 1 kHz 0 775V X20 X40 0 775V X20 X40 0 775V X20 X40 0 775V X20 X40 20K balanced 20K balanced 20K balanced 20K balanced 10K unbalanced 10K unbalanced 10K unbalanced 10K unbalanced 100dB 100dB 100dB 100dB 60dB 1kHz below rated power 60dB 1kHz below rated power 60dB 1kHz below rated power D D D D 10A 12...

Страница 32: ... 3 Pin XLR Channel A Outputs 5 Way Binding Posts Neutrik Speakon 5 Way Binding Posts Neutrik Speakon Channel B Inputs Channel B Outputs SEE SECTION 5 FOR OUTPUT CONNECTION DETAILS GAIN SWITCH 0 775V 0 775V X20 X40 X20 X40 A B VU METER THERMAL ACL IGM DC PROTECT AUTORAMP OUTPUT RELAY OUTPUT RELAY VU METER THERMAL ACL IGM DC PROTECT AUTORAMP CD owner s manual block diagram b ...

Страница 33: ...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 order these from your dealer or directly from Crest Audio ...

Страница 34: ...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 5mm2 0 75 1 5 2 5 4 6 8 24 5 6 2 9 1 74 1 09 0 73 5 5 10 8 5 6 2 9 1 74 1 09 28 19 9 10 8 6 7 4 3 2 9 0 75mm2 1 5 2 5 4 6 10 15 5 8 2 5 1 3 2 2 2 1 31 0 73 15 5 9 8 6 3 4 3 2 6 45 28 18 2 12 0 8 2 5 1 2 meters 5 meters 10meters 30meters wire gauge power loss 8 Ω load 4 Ω load 2 Ω load wire gauge d CD owner s manual ...

Страница 35: ... 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 18AWG 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 9 6 6 2 4 0 2 4 18AWG 16 14 12 10 8 11 9 7 7 5 0 3 2 2 0 1 20 22 14 6 9 6 6 2 4 0 2 4 37 26 17 8 11 8 7 7 4 7 5feet 10feet 40feet 80feet wire gauge power loss 8Ω load 4Ω load 2Ω load wire gauge d ...

Страница 36: ...http www crestaudio com CDOwner s Manual Version 1 1 10 14 04 P N 80305114 ...

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