1. Introduktion
Tak for købetasing the Marshall SC20C Studio Classic 1x10" 20/5-watt Tube Combo Amplifier. Det her 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. Vigtige sikkerhedsinstruktioner
- Læs instruktionerne: Læs alle sikkerheds- og betjeningsvejledninger, før du bruger dette produkt.
- Gem instruktionerne: Gem disse instruktioner til fremtidig reference.
- Vær opmærksom på advarsler: Overhold alle advarsler på produktet og i betjeningsvejledningen.
- Følg instruktionerne: Følg alle betjenings- og brugsanvisninger.
- Vand og fugt: Brug ikke dette apparat i nærheden af vand.
- Rensning: Rengør kun med en tør klud.
- Ventilation: Bloker ikke ventilationsåbninger. Installer i overensstemmelse med producentens anvisninger.
- Varme: Må ikke installeres i nærheden af varmekilder såsom radiatorer, varmeapparater, komfurer eller andre apparater (inklusive ampløftere), der producerer varme.
- Strømledningsbeskyttelse: Beskyt netledningen mod at blive trådt på eller klemt, især ved stik, stikkontakter og det sted, hvor de kommer ud af apparatet.
- Vedhæftede filer/tilbehør: Brug kun tilbehør/tilbehør specificeret af producenten.
- Lightning/Unused Periods: Træk stikket ud af dette apparat under tordenvejr, eller når det ikke skal bruges i længere perioder.
- Service: Overlad al service til kvalificeret servicepersonale. Service er påkrævet, når apparatet er blevet beskadiget på nogen måde, såsom strømforsyningsledning eller stik er beskadiget, væske er blevet spildt, eller genstande er faldet ind i apparatet, apparatet har været udsat for regn eller fugt, ikke fungerer normalt , eller er blevet droppet.
- Høj voltage: Rør ampLifjernere opererer med høj volumentages internally. Do not attempt to open the chassis or perform any internal servicing. Risk of electric shock.
- Højttalerforbindelse: Always ensure a speaker load is connected before powering on the ampfor at forhindre skader.
3. Pakkens indhold
Markér venligst feltet for følgende elementer:
- Marshall SC20C Studio Classic 1x10" Combo Amplivligere
- Strømkabel
- Brugervejledning (dette dokument)
If any items are missing or damaged, please contact your retailer or Marshall support immediately.
4. Produktet er slutview
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.

Figur 4.1: Front view of the Marshall SC20C Studio Classic Combo Amplifer. Dette billede viser 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 Betjeningselementer på frontpanelet
The front panel provides access to all primary sound-shaping controls.
- Indgangsstik: Connect your guitar or other instrument here using a standard 1/4" instrument cable.
- Preamp Volumen (forstærkning): Controls the amount of gain in the preamp section. Higher settings increase distortion and sustain.
- Hovedvolumen: Styrer den overordnede udgangsvolumen for amplivligere.
- Diskant: Justerer højfrekvensresponsen for amplivligere.
- Mellem: Justerer mellemfrekvensresponsen.
- Bas: Justerer lavfrekvensresponsen.
- Tilstedeværelse: 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.
- Afbryderen: Drejer amplivligere til eller fra.
- Standby-kontakt: Engages or disengages the high voltage to the tubes. Always use the standby switch when warming up or cooling down the amplivligere.
4.2 Bagpaneltilslutninger
The rear panel houses essential connections for power, external speakers, and effects loops.
- AC strømindgang: Tilslut det medfølgende strømkabel her.
- Højttalerudgange: 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.
- DI Output (XLR): Provides a balanced output for connecting directly to a mixing console or audio interface.
5. Opsætning
Follow these steps to set up your Marshall SC20C amplivligere:
- Placering: Placer amplifier on a stable, level surface, ensuring adequate ventilation around the unit. Avoid placing it near heat sources or in direct sunlight.
- Strømtilslutning: Sørg for 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.
- Instrumenttilslutning: Connect your guitar to the Input Jack on the front panel using a high-quality instrument cable.
- Ekstern højttaler (valgfri): 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.
- Effekt-loop (valgfrit): 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 amplivligere.
6. Betjeningsvejledning
Operating your SC20C amplifier involves a specific power-up and power-down sequence to protect the tubes and ensure longevity.
6.1 Tænd
- 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.
- Tillad 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 Sluk
- Reduce all volume controls (Preamp Volume, Master Volume) to their minimum (zero) positions.
- Flip the Standby switch to the STANDBY position.
- Tillad 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 ampLifier vil ikke blive brugt i en længere periode.
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. Vedligeholdelse
Korrekt vedligeholdelse sikrer levetiden og optimal ydeevne for dit amplivligere.
- Rensning: Frakobl amplifier from power before cleaning. Use a soft, dry cloth to wipe down the exterior. Do not use liquid cleaners or abrasive materials.
- Rørpleje: 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.
- Ventilation: Sørg for ampVentilationsåbningerne på apparatet skal altid være fri for blokeringer for at forhindre overophedning.
- Opbevaring: Når den ikke er i brug, skal du opbevare den amplifier in a dry, temperate environment, away from extreme temperatures or humidity.
8. Fejlfinding
Hvis du støder på problemer med din ampLifier, se følgende almindelige problemer og løsninger:
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Ingen lyd |
|
|
| Svag eller forvrænget lyd |
|
|
| Overdreven brummen eller støj |
|
|
If the problem persists after attempting these solutions, please contact Marshall customer support or a qualified service technician.
9. Specifikationer
| Feature | Detalje |
|---|---|
| Modelnavn | SC20C Studio Classic |
| Amplivligere Type | Rør |
| Output Wattage | 20W / 5W (Switchable) |
| Højttaler størrelse | 10 tommer |
| Number of Bands (EQ) | 3 (Treble, Middle, Bass) + Presence |
| Udgangskanalmængde | 1 |
| Strømkilde | Elektrisk med ledning |
| Kompatible enheder | Guitar |
| Connector Type | XLR (DI Out), 6.35mm Jack (Input, FX Loop, Speaker Outs) |
| Materiale | Metal (Chassis), Wood (Cabinet) |
| Farve | Sort |
| Varens vægt | 20 pund |
| Modelnummer | M-SC20C-U |
| ASIN | B07N2LR2DD |
10. Garanti og support
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 Amplifikation webwebsted.
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 Webwebsted: www.marshall.com