1. Rhagymadrodd
Diolch am brynuasing the Marshall SC20C Studio Classic 1x10" 20/5-watt Tube Combo Amplifier. Hyn amplifier is designed to deliver the iconic JCM800 tone in a compact and versatile package, suitable for both studio and stage use. Featuring a 10-inch speaker and switchable power output, the SC20C offers authentic tube amplification with modern convenience.
Please read this manual thoroughly before operating your amplifier to ensure safe and optimal performance. Keep this manual for future reference.
2. Cyfarwyddiadau Diogelwch Pwysig
- Darllenwch y Cyfarwyddiadau: Darllenwch yr holl gyfarwyddiadau diogelwch a gweithredu cyn defnyddio'r cynnyrch hwn.
- Cadw Cyfarwyddiadau: Cadwch y cyfarwyddiadau hyn er mwyn cyfeirio atynt yn y dyfodol.
- Sylwch ar y Rhybuddion: Cadw at yr holl rybuddion ar y cynnyrch ac yn y cyfarwyddiadau gweithredu.
- Dilynwch y Cyfarwyddiadau: Dilynwch yr holl gyfarwyddiadau gweithredu a defnyddio.
- Dŵr a lleithder: Peidiwch â defnyddio'r offer hwn ger dŵr.
- Glanhau: Glanhewch â lliain sych yn unig.
- Awyru: Peidiwch â rhwystro unrhyw agoriadau awyru. Gosodwch yn unol â chyfarwyddiadau'r gwneuthurwr.
- Gwres: Peidiwch â gosod yn agos at unrhyw ffynonellau gwres fel rheiddiaduron, cofrestrau gwres, stofiau, neu gyfarpar arall (gan gynnwys amplifyddion) sy'n cynhyrchu gwres.
- Diogelu llinyn pŵer: Amddiffynnwch y llinyn pŵer rhag cael ei gerdded ymlaen neu ei binsio, yn enwedig wrth blygiau, cynwysyddion cyfleustra, a'r pwynt lle maent yn gadael y cyfarpar.
- Atodiadau / Ategolion: Defnyddiwch atodiadau/ategolion a nodir gan y gwneuthurwr yn unig.
- Lightning/Unused Periods: Tynnwch y plwg o'r cyfarpar hwn yn ystod stormydd mellt neu pan na chaiff ei ddefnyddio am gyfnodau hir.
- Gwasanaethu: Cyfeirio pob gwasanaeth i bersonél gwasanaeth cymwys. Mae angen gwasanaethu pan fydd y cyfarpar wedi'i ddifrodi mewn unrhyw ffordd, fel llinyn cyflenwad pŵer neu blwg wedi'i ddifrodi, hylif wedi'i ollwng neu wrthrychau wedi disgyn i'r offer, mae'r cyfarpar wedi bod yn agored i law neu leithder, nid yw'n gweithredu'n normal , neu wedi cael ei ollwng.
- Uchel Voltage: Tiwb amplifiers operate with high voltages internally. Do not attempt to open the chassis or perform any internal servicing. Risk of electric shock.
- Cysylltiad Siaradwr: Always ensure a speaker load is connected before powering on the amplififier i atal difrod.
3. Cynnwys Pecyn
Ticiwch y blwch ar gyfer yr eitemau canlynol:
- Marshall SC20C Studio Classic 1x10" Combo Ampllewywr
- Cebl Pŵer
- Llawlyfr Defnyddiwr (y ddogfen hon)
If any items are missing or damaged, please contact your retailer or Marshall support immediately.
4. Cynnyrch Drosview
The Marshall SC20C is a tube-driven combo amplifier designed to deliver classic Marshall tones. It features a single 10-inch speaker and a robust control set for shaping your sound.

Ffigur 4.1: Blaen view of the Marshall SC20C Studio Classic Combo Amplifer. Mae'r ddelwedd hon yn dangos y amplifier's black tolex covering, gold-colored control panel, and the iconic Marshall logo. The single 10-inch speaker is visible behind the grille cloth.
4.1 Rheolaethau Panel Blaen
The front panel provides access to all primary sound-shaping controls.
- Jack Mewnbwn: Connect your guitar or other instrument here using a standard 1/4" instrument cable.
- Cynamp Cyfrol (Gain): Controls the amount of gain in the preamp section. Higher settings increase distortion and sustain.
- Prif Gyfrol: Yn rheoli cyfaint allbwn cyffredinol y ampllewywr.
- Trebl: Adjusts the high-frequency response of the ampllewywr.
- Canol: Yn addasu'r ymateb amledd canol.
- Bas: Yn addasu'r ymateb amledd isel.
- Presenoldeb: Adds high-end sparkle and clarity by affecting the power amp's high-frequency response.
- Output Select (20W/5W): A switch to select between 20-watt and 5-watt output modes. The 5-watt mode provides earlier power amp saturation at lower volumes.
- Newid Pwer: Yn troi y amplifier ymlaen neu i ffwrdd.
- Switsh Wrth Gefn: Engages or disengages the high voltage to the tubes. Always use the standby switch when warming up or cooling down the ampllewywr.
4.2 Cysylltiadau Panel Cefn
The rear panel houses essential connections for power, external speakers, and effects loops.
- Mewnbwn Pwer AC: Cysylltwch y cebl pŵer a gyflenwir yma.
- Allbynnau Siaradwyr: Connect external speaker cabinets here. Ensure the impedance matches the amplifier's output (e.g., 8 Ohm, 16 Ohm). The internal speaker is typically connected to one of these.
- Effects Loop Send: Connect to the input of your external effects pedals.
- Effects Loop Return: Connect to the output of your external effects pedals.
- Allbwn DI (XLR): Provides a balanced output for connecting directly to a mixing console or audio interface.
5. Gosod
Follow these steps to set up your Marshall SC20C ampllewywr:
- Lleoliad: Gosodwch y amplifier on a stable, level surface, ensuring adequate ventilation around the unit. Avoid placing it near heat sources or in direct sunlight.
- Cysylltiad Pwer: Sicrhau y amplifier's power switch is in the OFF position and the standby switch is in the STANDBY position. Connect the supplied power cable to the AC Power Input on the rear panel and then to a grounded electrical outlet.
- Cysylltiad Offeryn: Connect your guitar to the Input Jack on the front panel using a high-quality instrument cable.
- Siaradwr Allanol (Dewisol): If using an external speaker cabinet, ensure the internal speaker is disconnected (if applicable and specified in the manual, or ensure correct impedance matching if both are used). Connect the external speaker to the appropriate Speaker Output on the rear panel, matching the impedance. Always ensure a speaker load is connected before powering on.
- Effects Loop (Optional): If using external effects, connect the "Send" of the amplifier to the input of your first effect pedal, and the output of your last effect pedal to the "Return" of the ampllewywr.
6. Cyfarwyddiadau Gweithredu
Operating your SC20C amplifier involves a specific power-up and power-down sequence to protect the tubes and ensure longevity.
6.1 Pweru Ymlaen
- Ensure all volume controls (Preamp Volume, Master Volume) are set to their minimum (zero) positions.
- Ensure the Standby switch is in the STANDBY position.
- Flip the Power switch to the ON position. The power indicator light will illuminate.
- Caniatáu i'r amplifier to warm up for at least 30-60 seconds. This allows the tubes to reach their operating temperature.
- After the warm-up period, flip the Standby switch to the PLAY position.
- Slowly increase the Master Volume and Preamp Volume to your desired levels.
6.2 Pweru i ffwrdd
- Reduce all volume controls (Preamp Volume, Master Volume) to their minimum (zero) positions.
- Flip the Standby switch to the STANDBY position.
- Caniatáu i'r amplifier to cool down for a few seconds.
- Flip the Power switch to the OFF position. The power indicator light will extinguish.
- Unplug the power cable from the wall outlet if the ampni fydd hylifydd yn cael ei ddefnyddio am gyfnod estynedig.
6.3 Tone Shaping
Experiment with the Preamp Volume, Master Volume, and EQ controls to achieve your desired sound. The Preamp Volume controls the amount of distortion, while the Master Volume controls the overall loudness. The Treble, Middle, and Bass controls allow you to sculpt the frequency response. The Presence control adds brightness and cut to your tone.
The Output Select switch allows you to choose between 20-watt and 5-watt operation. The 5-watt mode will allow the power tubes to saturate and compress at lower overall volumes, which can be ideal for practice or recording where full stage volume is not required.
7. cynnal
Proper maintenance will ensure the longevity and optimal performance of your ampllewywr.
- Glanhau: Datgysylltwch y amplifier from power before cleaning. Use a soft, dry cloth to wipe down the exterior. Do not use liquid cleaners or abrasive materials.
- Gofal Tiwb: Vacuum tubes have a finite lifespan and will eventually need replacement. Signs of worn tubes include reduced output, loss of tone, excessive noise, or microphonic feedback. Tube replacement should ideally be performed by a qualified technician. If replacing tubes yourself, ensure the amplifier is unplugged and allowed to cool completely, and handle tubes carefully.
- Awyru: Sicrhau y ampbod agoriadau awyru'r lifer yn glir o rwystrau bob amser i atal gorboethi.
- Storio: Pan nad yw'n cael ei ddefnyddio, storiwch y amplifier in a dry, temperate environment, away from extreme temperatures or humidity.
8. Datrys Problemau
Os byddwch chi'n dod ar draws problemau gyda'ch amplifer, cyfeiriwch at y problemau a'r atebion cyffredin canlynol:
| Problem | Achos Posibl | Ateb |
|---|---|---|
| Dim sain |
|
|
| Sain wan neu ystumiedig |
|
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| Excessive hum or noise |
|
|
If the problem persists after attempting these solutions, please contact Marshall customer support or a qualified service technician.
9. manylebau
| Nodwedd | Manylyn |
|---|---|
| Enw Model | SC20C Studio Classic |
| AmpMath lifier | Tiwb |
| Allbwn Wattage | 20W / 5W (Switchable) |
| Maint Siaradwr | 10 modfedd |
| Number of Bands (EQ) | 3 (Treble, Middle, Bass) + Presence |
| Output Channel Quantity | 1 |
| Ffynhonnell Pwer | Trydan Corded |
| Dyfeisiau Cydnaws | Gitâr |
| Math o Gysylltydd | XLR (DI Out), 6.35mm Jack (Input, FX Loop, Speaker Outs) |
| Deunydd | Metal (Chassis), Wood (Cabinet) |
| Lliw | Du |
| Pwysau Eitem | 20 Bunt |
| Rhif Model | M-SC20C-U |
| ASIN | B07N2LR2DD |
10. Gwarant a Chefnogaeth
Marshall products are manufactured to the highest standards and come with a limited warranty. For specific warranty terms and conditions applicable to your region, please refer to the warranty card included with your product or visit the official Marshall Amplification websafle.
For technical support, service, or replacement parts, please contact your authorized Marshall dealer or visit the Marshall Amplification support page online. When contacting support, please have your amplifier's model number (SC20C) and serial number ready.
Official Marshall Websafle: www.marshall.com