Vox Berkely Super Reverb Twin Owners Manual & Schematic 电路图.pdf

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1、 0 1965 VOX Berkeley Super Reverb - Owners Manual - RadioFans.CN 收音机爱 好者资料库 1 Contents: Warnings Dos and Donts .Pages 1, 2 Part Numbers and other Information . Page 2 Mirror Image of Bottom View of Amp Chassis and Tubes . Page 3 Factory Chassis Layout . Page 4 Factory Schematic Diagram Page 5 Factor

2、y Parts List . Pages 6, 7 An Article about the Amp from the Web . Page 8 Photos of the Amp . Page 9 RadioFans.CN 收音机爱 好者资料库 1 Warnings Dos and Donts Always use, and fully tighten, the head clamp to the trolley so the head doesnt slide off. Always plug in the speaker cable at each end before plugging

3、 in AC power cord. Never turn on any tube Amp unless the speaker cable is hooked up; If you dont, youll blow the output section of the AMP. (This includes combos too.) To unplug the speaker cable, slide the blue release, on the XLR connector, away from you. Dont pick up the speaker cabinet by the to

4、p of the trolley. (The chrome stand) The trolley is designed to come apart just above the hand nuts. To remove trolley: 1 Remove Amp Head, and loosen the trolleys hand nuts a little. 2 Pull up on one side of trolley, and pull that side along the bottom half with the top half down even to where it wa

5、s, but along side. 3 Pull up on the other side to remove top half of trolley. 4 Put speaker cabinet on chair, and remove hand nuts and remove lower trolleys. When reassembling, always put the brown face of the large washers, inside the hand nuts, towards the speaker cabinet. WARNING READ CAREFULLY!

6、Older electrical equipment often has a HOT chassis with no modern AC Power plug. This means that its possible to plug in the amp the wrong way and touch another electrical device, like your PA system, and get a belt of 110 Volts AC. I did this in the old days and saw blue lights before I passed out!

7、 After that, I always held the guitar strings with one hand, wet my finger a little, and then quickly taped the mike, or other equipment. Now days I use a volt meter. The new power cords, with one prong larger then the other, prevents this. Your Amp has the original power cord; I put a white sticker

8、 on one side; always plug in the amp with the sticker UP as in the picture to the left. Also, always keep the polarity (Line Reverse) switch to the LEFT as shown below. If the power cord is replaced with a new one, the Line Reverse switch should have the unused lead cut off from the switch. WARNING:

9、 Only a qualified technician should work on tube amps. The big can capacitor C-26, see page 3, is actually three Caps in one: C-26A = 270 Volts DC, C26B = 240 Volts DC, and C26C = 150 Volts DC. With the Amp off these caps stay charged which means that if you touch the terminals of C26 your guitar pl

10、ayen days are over. Note that these terminals run to every tube socket, and else ware, so you could get electrocuted there too. The first thing a tech does before working on an amp is to discharge these capacitors through a high power resistor, and then shunt all C26 terminals to ground; these pesky

11、 little devils have a way of recharging, memory, and still get ya. ALWAYS KEEP LINE SWITCH SW-2 TO THE LEFT AS SHOWN RadioFans.CN 收音机爱 好者资料库 2 Warnings Dos and Donts Cont. - To remove the preamp shields, push up and turn clockwise. - If you ever have a problem with any tube Amp, unplug it, let the t

12、ubes cool down, and reseat all the tubes. This is done by pushing up on the tube while rotating the bottom end. I had to do this with a new Fender Amp once. The tubes get unseated when set down hard. Some older Amps need their tube socket connectors closed up for a firmer grip the tube pins. Electro

13、lytic caps are often replaced too; they looked good to me; no leakage, when I cleaned the Pots in January 2010. - The Aux Speaker output can be used as an effects send if the proper voltage divider circuit is designed and used to get the 12 V down to 3 mV, the total resistance of the circuit should

14、be 100K. Any unused Input can be a return as long as it matches the guitar output voltage (3mV into100K). (Like a stomp box output) Let a qualified Tech do this for you! - The foot switch jack (Tip) could be used as a dry effect send; again with the proper voltage divider circuit. Talk to your Tech

15、about it. Part Numbers and Other Information Speakers: Two 10” 16 Ohm Speakers Wired in Parallel (Total Impedance Together is 8 Ohms) A Gold Decal on the back of both speakers has a Bulldog on top; the bottom of the decal reads: VOX Heavy Duty Loud Speaker Manufactured Under License From Jennings Mu

16、sical Industries, LTD Darford Kent, England Both Speaker Frames are Stamped with an Inspection Mark, P21AP and 7442. Amp Head: 17 Watt all tube Guitar Amp with Reverb and Tremolo. (Foot Switch Controlled) (The original foot switch comes with the amp, along with the original cases and trolley.) Two G

17、uitar Inputs, Auxilary Input, and Auxilary Speaker Output (See page 4 and 5) The Reverb Tank is marked: 23-5002-2 and 6610. 3 Mirror Image of Bottom View of Amp Chassis PL1 PL2 J2 J3 T2 T3 T1 V2 V1 J6 J4 C26 V6 J7 V7 V3 V4 V5 12AU7 12 AX7 12 AX7 EL-84 EL-84 12AX7 EZ81 The tubes in this amp are liste

18、d in the table below. Note that America and Britten have their own tube designations i.e. the Brits call a 12AX7 an ECC83 P/N Tube used for: American British MFG Country V1 Rectifier 6CA4 EZ81 Mullard British V2 First Pre-Amp/Volume Control 12AX7 ECC83 Electro Harmonics British V3 Second Pre-Amp/Ton

19、e Control 12AX7 ECC83 Sovtek Russian V4 Power Tube (Speakers) 6BQ5 EL-84 Sovtek Russian V5 Power Tube (Speakers) 6BQ5 EL-84 Sovtek Russian V6 Reverb Tank Input Pre-Amp 12AU7 ECC82 ? USA V7 Reverb Tank Output Pre-Amp, and Tremolo 12AX7 ECC83 Sovtek Russian J4 Output to Speaker XLR Connector J6 Output

20、 to Reverb Tank J7 Input from Reverb Tank T1 AC Power Transformer T2 Speaker Transformer T3 Reverb Input Transformer C26 Can Cap for Power Supply (C26A, C26B and C26C) Note When I bought the amp from the original owner it had the tubes listed below. These tubes come with the Amp Some may be bad, Som

21、e may be good. P/N American British MFG Country V1 6CA4 EZ81 Sylvania British V2 12AX7 ECC83 Missing ? V3 12AX7 ECC83 VOX British V4 6BQ5 EL-84 VOX British V4 6BQ5 EL-84 VOX British V6 12AU7 ECC82 VOX British V712AX7ECC83VOXBritish 4 Note Only use this view when the cassis is removed and turned over. Use the view on page 3 when working on the amp with the chassis installed. 5 1 INPUT 2 INPUT 3 INPUT BERKELEY SUPER REVERB Y R KER HMS KER HMS Y R KER HMS KER HMS 6 7 8