Uvod
The Marshall SV20H Studio Vintage 20/5-watt Tube Head is a compact yet powerful amplifier designed to deliver the iconic "Plexi" tone. This amplifier head is a versatile tool for guitarists seeking classic British rock sounds, offering both 20-watt and 5-watt power modes for various playing environments, from studio recording to live performances. It features a 1-channel design with four inputs, high/low sensitivity loudness controls, an effects loop, and a power reduction circuit, providing flexibility and authentic vintage zvok.
Varnostne informacije
Pred uporabo preberite in razumite vsa varnostna navodila amplifier. Failure to follow these instructions may result in electric shock, fire, or other hazards.
- vir energije: Povežite amplifier only to a power supply of the type described in this manual and marked on the unit. Ensure the power cord is not damaged and is properly grounded.
- Prezračevanje: Do not block any ventilation openings. Install in accordance with the manufacturer's instructions. Adequate airflow is essential to prevent overheating.
- Voda in vlaga: Do not expose this apparatus to rain or moisture. Do not use near water or in wet locations.
- Toplota: Ne nameščajte v bližini virov toplote, kot so radiatorji, grelniki, peči ali druge naprave (vključno z amplifiers), ki proizvajajo toploto.
- Servisiranje: Tega izdelka ne poskušajte servisirati sami. Vsa servisna dela prepustite usposobljenemu serviserju. Servis je potreben, če je naprava kakorkoli poškodovana, na primer če je poškodovan napajalni kabel ali vtič, če je bila vanjo razlita tekočina ali če so vanjo padli predmeti, če je bila naprava izpostavljena dežju ali vlagi, če ne deluje normalno ali če je padla.
- cevi: Cev amplifiers contain vacuum tubes that operate at high temperatures and high voltages. Exercise extreme caution when handling or replacing tubes. Allow the amplifier to cool down completely before attempting any tube maintenance.
- Velika glasnost: Dolgotrajna izpostavljenost visokim ravnem glasnosti lahko povzroči trajno poškodbo sluha. Pri nastavljanju glasnosti bodite previdni.
Kako začeti
Upon receiving your Marshall SV20H, carefully unpack the ampVzemite iz embalaže. Shranite vso embalažo za kasnejši transport ali shranjevanje. Preverite amplifier for any signs of damage that may have occurred during shipping. If any damage is found, contact your retailer immediately.
Pred priključitvijo amplifier, ensure it is placed on a stable, level surface with adequate ventilation around all sides.
Nastavitev
Follow these steps to set up your SV20H amplifier head:
- Priključitev ohišja zvočnika: Using a high-quality speaker cable (not a guitar cable), connect the appropriate speaker output on the rear of the SV20H to your speaker cabinet. Ensure the impedance of the speaker cabinet matches the selected output on the amplifier (e.g., 8 Ohm output to an 8 Ohm cabinet). Nikoli ne upravljajte amplifier without a speaker load connected.
- Priključite napajanje: Zagotovite amplifier's power switch is in the 'OFF' position. Connect the supplied power cord to the IEC inlet on the rear of the amplifier and then to a grounded electrical outlet.
- Povežite instrument: Plug your guitar into one of the input jacks on the front panel. The SV20H features four inputs: two for High Sensitivity (Loudness 1) and two for Low Sensitivity (Loudness 2). Experiment to find the input that best suits your guitar and desired tone.
Figure 1: Front panel of the Marshall SV20H amplifier head, displaying the various controls and input jacks.
Delovanje Amplifier
The SV20H offers intuitive controls for shaping your sound:
- Power Switch (MAINS): Obrne amplifier on and off. Always turn the amplifier on with the MAINS switch first, then the STANDBY switch (if applicable, though this model typically has a single power switch).
- Loudness 1 (High Sensitivity): Controls the volume of the high-sensitivity input. This input provides more gain and is ideal for achieving classic rock crunch and lead tones.
- Loudness 2 (Low Sensitivity): Controls the volume of the low-sensitivity input. This input offers cleaner tones with less gain, suitable for jazz, blues, or when using high-output pickups.
- Prisotnost: Adjusts the amount of high-frequency feedback in the power amplifier section, adding sparkle and definition to your tone.
- Bas, srednji, visoki toni: Standard three-band equalizer controls to shape the low, mid, and high frequencies of your guitar tone.
- Power Reduction Circuit: The SV20H features a power reduction switch (often labeled 20W/5W or similar) allowing you to switch between full 20-watt output and a lower 5-watt output. This is useful for achieving cranked tube tones at lower volumes.
- Zanka učinkov: The series effects loop (SEND/RETURN jacks on the rear panel) allows you to integrate external effects pedals (e.g., delay, reverb, modulation) into the ampsignalna pot liferja po predhodnemamp section. Connect the SEND to your pedal's input and the pedal's output to the RETURN.
Ogrevanje in ohlajanje: Dovolite amplifier a few minutes to warm up after turning it on before playing. Similarly, allow it to cool down for a few minutes after turning it off before moving it.
Vzdrževanje
Proper maintenance will ensure the longevity and optimal performance of your SV20H ampdvigalo:
- Čiščenje: Odklopite ampPred čiščenjem izklopite napravo iz električnega omrežja. Za brisanje zunanjosti uporabite mehko, suho krpo. Ne uporabljajte abrazivnih čistil, topil ali voskov.
- Zamenjava cevi: Vacuum tubes have a finite lifespan and will eventually need replacement. If you notice a decrease in performance, unusual noise, or a change in tone, it may be time to replace the tubes. Refer to a qualified technician for tube replacement, as this involves high voltages.
- Shranjevanje: Ko naprave dalj časa ne uporabljate, jo shranite amplifier in a cool, dry place, ideally in its original packaging or a protective cover.
- prevoz: Always disconnect all cables and allow the amplifier to cool down before transporting. Use appropriate cases or covers to protect the unit from physical damage.
Odpravljanje težav
If you encounter issues with your SV20H, try these common troubleshooting steps:
| Težava | Možen vzrok | rešitev |
|---|---|---|
| Brez zvoka | Power not connected, speaker cable loose/incorrect, instrument cable faulty, volume knobs down. | Check power connection, ensure speaker cable is securely connected to correct impedance output, test instrument cable, increase Loudness controls. |
| Šibek ali popačen zvok | Faulty tubes, incorrect speaker impedance, damaged speaker, effects loop issue. | Consult a technician for tube inspection/replacement. Verify speaker impedance. Test with a different speaker cabinet. Bypass effects loop to isolate issue. |
| Prekomerno brenčanje ali hrup | Ground loop, faulty cable, proximity to other electronics, worn tubes. | Ensure proper grounding. Use shielded cables. Move amplifier away from power supplies or fluorescent lights. Consult technician for tube check. |
| Ni indikatorske lučke za napajanje | Power cord disconnected, blown fuse, power outlet issue. | Check power cord connection. Replace fuse (refer to manual for fuse type and location, or consult technician). Test power outlet with another device. |
Če težava po poskusu teh rešitev ne izgine, se obrnite na usposobljeno servisno osebje.
Specifikacije
| Funkcija | Podrobnost |
|---|---|
| Številka modela | M-SV20H-U |
| Izhodna vattage | 20 Watts (switchable to 5 Watts) |
| Kanali | 1 (with 4 inputs: High/Low Sensitivity) |
| Kontrole | Loudness 1, Loudness 2, Presence, Bass, Middle, Treble |
| Zanka učinkov | Yes (Series) |
| Vir napajanja | Električni na kabel |
| Združljive naprave | Kitara |
| Vrsta priključka | 6.35 mm vtičnica |
| barva | Črna |
| Teža predmeta | 25.3 funtov (11.48 kg) |
| Mere izdelka (D x Š x V) | 25 x 12 x 10 palcev (63.5 x 30.48 x 25.4 cm) |
| Prvič na voljo | 24. januar 2019 |
Figure 2: Dimensions of the Marshall SV20H amplifier glava.
Garancija in podpora
For information regarding warranty coverage and terms for your Marshall SV20H amplifier, please refer to the warranty card included with your product or visit the official Marshall Amppoenostavitev webspletnega mesta. Shranite dokazilo o nakupu za uveljavljanje garancije.
For technical support, service inquiries, or to locate an authorized service center, please contact Marshall Amplification customer support through their official webspletnega mesta ali kontaktnih podatkov, navedenih v dokumentaciji izdelka.
Official Marshall Webspletno mesto: www.marshall.com
