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Summary of Contents for Ceriatone All Access JCM51
- Page 1 JCM51 “All Access”...
- Page 2 Countless records and hits were recorded on these amps by many artists. Ceriatone has been offering these amps for a long time, and their popularity endure. We were looking to “modernize” these models, not by changing the soul that made them great, but by adding useful features that make the amp more versatile, and more in line with current needs of guitar players.
- Page 3 2) QUICK SETUP (for instant gratification) 1) Plug your guitar using a 1/4” instrument cable into the upper I input on the right of the front panel 2) Plug a suitable power cable from the rear panel MAINS cable inlet to your wall power receptacle 3) Plug the amp into your speaker cabinet using 1/4”...
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Page 4: Front Panel Controls
2) FRONT PANEL CONTROLS From left to right: 1) POWER 2-way toggle switch 2) STANDBY 2-way toggle switch 3) INDICATOR Pilot Light 4) POST PHASE INVERTER MASTER VOLUME (PPIMV) control 5) PRESENCE control 6) BASS control 7) CHAN LED – channel indicator 8) CHAN 2-way toggle switch 9) MID control 10) TREBLE control... - Page 5 POST PHASE INVERTER MASTER VOLUME (PPIMV) is a master volume control that acts after the phase inverter. This allows you to still have preamp and phase inverter distortion, but at lower volumes. When this control is maxed, the PPIMV is bypassed, thus it will be like a stock circuit.
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Page 6: Rear Panel Controls
BRIGHT is the Bright Switch for the Plexi channel’s Volume control. It is 3 way - Left is 1000pF, while Right is 100pF (while Middle is without bright capacitor. Plexi circuits have various values of bright capacitors, do adjust to taste! INPUT Jack Plug your guitar in here. -
Page 7: Impedance Selector
Gain+ is for the JCM800 channel. It’s 2 way, and when turned On (Up), it provides more gain than stock JCM800 circuit. SEND is the Send jack of the effects loop, which is a SOLID STATE BUFFERED type, in this amp. A ¼” instrument cable is used, to the Input of your effects. LOOP ON OFF switch is to turn the Buffered Loop on or off. - Page 8 MAINS FUSE SLO BLO fuse – used to protect your amplifier from voltage spikes or excessive current draw. Replace only when necessary. 3A is used for amplifiers used with a 120VAC country supply, and 2A is used with 240VAC. MAINS IEC cable inlet – plug a suitable IEC power cable into this inlet to power your amplifier 5) TUBE COMPLEMENT AND BIAS ADJUSTMENT V3 BIAS POT V4...
- Page 9 1) Turn on a digital multimeter (DMM), and set it to read millivolts (mV) in the 100mV range (this will vary from DMM to DMM) 2) Plug a black probe into the color-coded jack on your DMM, and do the same for a red probe 3) Insert the black probe tip into the COM probe jack.
- Page 10 Biasing should only be done on a clean workbench with no distractions. Do not wear loose clothing or any jewelry. Take your time, and think carefully before each step. Again, bias at your own risk. Ceriatone Amplification is not responsible for any damages or injuries resulting from user biasing.
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Page 11: Frequently Asked Questions
6) FREQUENTLY ASKED QUESTIONS How do I hook up this thing? - See Section 2, beginning on page 3. Is the FX loop series or parallel? Active or passive? - The FX loop is series, and is a buffered solid state type Can I substitute different tube types? - Although you can try 12AT7s, 12AU7s, 5751s without any harm, the design is optimized for 12AX7s, and are therefore the only recommended... - Page 12 7) How to achieve the Sounds in the JCM51 All Access? For Plexi Sounds: The Plexi channel must be selected. The Channel LED will turn off, when the Plexi channel is selected. While in Plexi channel, the Gain and Master Volume controls will have no effect. Neither will Gain+ switch at the back.
- Page 13 b) BRIGHT – this will be the bright switch. 1000pF (Right) will be stock value of most JCM800 amps. 4700pF (Left) will be bright at lower settings of GAIN, but should help in getting more distortion/crunch sounds. Middle is without any Bright capacitor. c) MASTER –...
- Page 14 8) Settings templates Please resize, and print the templates below, to make your settings templates...
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