Home MARSHALL C5 Head
MARSHALL Class 5 Head C5H

Made in the UK

As of Feb 2012 the Marshall C5 Head is no longer in Production. There are still a few of these Amps available in the Shops and I have some Amps available that I can Modify to Order.

The C5H, 5 Watt Amp from Marshall in 'Head' Format. Using One-or-Two of the Marshall 'C110' Speaker Cabs (Or any Speaker Cabs) the Sound is KILLER. The Circuit Design is exactly the same as the Combo but the Internal layout is Different. As with the Combo it is an All Valve, Class A, Cathode Bias, Single Ended Design with NO Transistors, Chips, Digital Processing or SMT (Surface Mount Technology). There is NO Heater 'Buzz' - NO Circuit 'HUM' - It uses a 3 Stage Gain Circuit, without a Ton of 'HISS'. Limited 'Clean' Headroom, but Loads of Great 'Crunch' and 'Sustain', it Looks and Sounds Fantastic. The Amp has an additional 8 Ohm Speaker Output and does not include the 'Low Power Mode'.

On the Test Bench the Stock Amp is Producing 5 Watts RMS and about 8 Watts Peak Power into 8 -or- 16 Ohms.

Same problem as the Combo - you have to run it FLAT-OUT to get the 'Classic' Marshall Sound, then it's too Loud for Home Use......RAT 'OPR' sorts that out......

The Circuit is Wide Open to some Great Modifications - So this is What I do -

 

Main Modifications-

1. - 'OPR' - Output Power Reduction.

2. - Variable Boost Footswitch - Switches the Boost Circuit On-or-Off with Variable Boost Control, RED LED Indicator - Metal Construction with 12 Foot Lead.

3. - Master Volume Control - Allows Preamp Overdrive -or- Power Amp Overdrive -or- Both.

4. - 3x Preamp 'Bias' and 'Gain' Switches.

5. - Modified Tone Stack - Allows each Frequency (Treble, Middle and Bass) to sweep from 'Zero-to-Max'. The Standard C5H Tone Controls operate in a 'Preset Range'.

6.- Series FX Loop - 'Send' and 'Return'. The 'Send' Socket can also be used as a PREAMP 'Line Out' and the 'Return' Socket can be used for Direct Access to the Valve Power Amp (For External Preamps -or- Multi-Effects Processors).

7. - Dedicated 'Line Out' Socket - (Frequency Corrected) taken from the Output Transformer - Active in both 'Speaker' and ' Headphone' Mode.

8. - Tri Rectifier System - Uses a 3 Position Switch to Select 'Silicon', 'V1 Valve' (For Maximum SAG) or 'V2 Valve' Operation.

9. - Standby Switch - Carling Combination 'Off/Standby/On' Mains Power Toggle Switch fitted to all Amps.

 

Special Modifications-

'Dual Parallel' 10 Watt Upgrade - The Stock Marshall C5 Transformers do not allow any Increase in Output Power. To get 10 Watts (10 Watts RMS - 16 Watts Peak Power) out of this Amp, Both the 'Mains' and 'Output' Transformers must be Replaced with Hammond Units. This Upgrade comes with it's own set of Modifications and the Output Stage of the Amp is converted to 'Dual Parallel' (2x EL84 Valves Running Side-by-Side). The Overall effect of these Changes is a more 'Focused' Sound, more 'Clean Headroom', 'Tighter Bass', Improved 'Sustain' with much more 'BITE'. The 'Tri-Rectifier' System is included in this Upgrade. This set of Modifications is expensive as both Transformers must be Replaced.

'Dual Valve MIX' 10 Watt Amp - The Amp is fitted with 2x different Output Valves, An 'EL84' and a '6L6GC'. A Rotary control on the Front Panel allows any Level of 'MIX' between the two Power Valves. At Full 'MIX' you get the best of both worlds - Great 'Crunch' from the EL84 and Enhanced 'Bass' from the 6L6GC. The Output Power of the Amp is Lifted to 10 Watts RMS and about 16 Watts Peak Power. The Stock Mains and Output Transformers are replaced with Hammond Units. The 'Tri-Rectifier' System is Included in this Upgrade. This set of Modifications is expensive as both Transformers must be Replaced.

 

Send me your Amp - The Above Modifications will make it Loads Better and you will be able to 'Crank it' in the Bedroom.

Excellent Pricing and Rapid Turnaround on this Amp.

Please 'Contact' Me for a Great Quote.

- Amplifiers In Stock -

 

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