Cornell Custom 40 Owner'S Manual Download Page 1 | Manualshive

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Cornell Custom 40 Owner'S Manual Download Page 1

© 2000-2007 CORNELL Musical Equipment Design & Development

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Custom 40

&

Custom 80

Owner’s Manual

DC Developments

Musical Equipment Design & Development

Unit 13 Rosshill Industrial Park, Southend-on-sea, Essex SS2 5PZ England

Tel/Fax +44 (0)1702 610964

www.dc-developments.com

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Summary of Contents for Custom 40

Page 1: ...ment Design Development 1 Custom 40 Custom 80 Owner s Manual DC Developments Musical Equipment Design Development Unit 13 Rosshill Industrial Park Southend on sea Essex SS2 5PZ England Tel Fax 44 0 1702 610964 www dc developments com ...

Page 2: ...s 8 Please read all instructions before operating the amp WARNING To prevent damage fire or shock hazard do not expose this unit to rain or moisture No user serviceable parts inside Refer servicing to qualified personnel only This unit must be earthed Use the correct mains cord If you require any further information regarding the Custom 40 or Custom 80 amplifier or any other CORNELL products pleas...

Page 3: ... small capacitance The result of this in a guitar amplifier is a substantial loss in both high frequency response and harmonic richness Cornell amplifiers are designed to avoid this by having point to point wiring throughout Components are mounted onto a specially designed component board which is then sealed using a conformal coating to prevent noise and the reduction of component life caused by ...

Page 4: ...rtion occurs and is constantly present in the sound of the amplifier creating a fuzzy tone If the bias voltage is set too low then the valves might start to glow red which will considerably reduce their life and result in expensive replacement It is recommended that a qualified engineer re biases the output valves when replacements are first used The output transformer of the Custom 40 Custom 80 h...

Page 5: ...assis next to the line output is the impedance switch This switch should be pointing inward for normal use 8 Ohm internal speakers only or 8 Ohm external speakers with the internal speakers disconnected and should be switched to point outward for use when an 8 Ohm extension cabinet is used in parallel with the internal speakers or some other combination totalling 4 Ohms Using the correct impedance...

Page 6: ...nal extra LINE OUTPUT Coil tapped from output transformer 600 Ohms at 0 25 Watt OUTPUT Custom 40 40 10 Watts Custom 80 80 20 Watts SPEAKERS Custom 40 1 x Tone Tubby 8 Ohms with 8 4 Ohms impedance selector switch Custom 80 2 x Tone Tubby 16 Ohms each in parallel with 8 4 Ohms impedance selector switch CABINET Pine shell plywood baffle Tweed covering Leather handle Rubber feet SIZE Custom 40 Height ...

Page 7: ...nly be replaced with the same types of valve as specified below The Custom 40 amplifier has three pre amp valves 12AX7 ECC83 and two power valves 6L6 The Custom 80 has the same pre amp valves and four 6L6 output valves Warning When changing valves ALWAYS unplug the amplifier and remember that the VALVES ARE HOT Wait for the valves to cool or replace the valves when the amplifier has not been used ...

Page 8: ...ualified personnel HT Bias Htrs A B C D E F Fuse Thermistor 1 2 For 240v A C Mains Connect 1 to A Blue Connect 2 to F Brown Join C D Black Red B E Yellow Orange no connection For 115v A C Mains Connect 1 to A D Blue Red Connect 2 to C F Black Brown T 4 Amp Fuse B E Yellow Orange no connection For 100v A C Mains Connect 1 to A D Blue Red Connect 2 to B E Yellow Orange C F Black Brown no connection ...

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