trainwreck_express 电路图.pdf

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1、250k Treble 150k 820R White Black 2.0A SB Fuse 120vac Power Power Switch 100uF 100v Bias 470R / 1W 10kB Bias Adj 15k 0.1uF 5kB Presence .001uF poly .001uF ceramic from Ken Fischer Based on designs EL34 or 6V6 EL34 or 6V6 1M 22uF 12AX7 Trainwreck Express .022uF .022uF 500pF 25kB Middle 250kB Bass 100

2、k 0.1uF 0.1uF 22k 470R 100k 0.1uF 220k220k 1000 47k Bias B+3 16 ohm 8 ohm 100k 1k5 2k7 10k 220uF 100k 100k 82k 1000 1k5 B+2 B+4 B+5 B+5 12AX7 12AX7 12AX7 Volume B+1 1MA 1k5 To filaments feedback swells into higher harmonics above the note, the low end doesnt mush out, thick mids yet clear top end. W

3、hen the guitar volume is rolled off, it becomes one of the sweetest and jangliest amps Ive got. 22uF 12AX7 Trainwreck Express .022uF .022uF 500pF 25kB Middle 250kB Bass 100k 250kA Treble0.1uF 0.1uF 10k 470R 100k .022uF .022uF 220k220k 1000 100k 1M Bias B+3 16 ohm 8 ohm 100k 1k5 2k7 .001uF 10k 56k 22

4、uF 150k 100k 82k 1M 1000 1k5 B+2 B+4 B+5 B+5 12AX7 12AX7 12AX7 Volume B+1 1MA 1k5 100R To filaments without the conjunctive filter the sound would be extremely brittle and harsh. The 3 position Bright Switch is an important control as it allows for chimey and clear sounds at lower settings of the vo

5、lume control. Because of the series linkage the low capacitance setting works out to 129pF. I like to turn up all of the controls to 10 (going through a Marshall Power Brake when necessary) and then fiddle with the controls on the guitar to get clean, crunchy or downright distorted tones. 1200pF 1kV

6、 .022uF 418P 100k B+5 285vdc 715P .0015uF Rev.05-20-01 Revisions from Versions 2 & 5 shown in RED EL84 EL84 B+2 130/5w 25uF 10k 10W 0.033uF 630v 10k 1k5 20uF 2k7 1uF poly Volume 1MA 56k 1M 56k B+3 150k 150k 5k6 5k6 270k 0.22uF 100k B+4 50pF 68k * 200k 250kB Bass 100k B+5 20uF 1k5 1M 0.22uF poly 820R

7、 (2 - 4M7) Blues Express Plus Version A9h 150k * Use 56k to 150k. This will set amount of gain & distortion. 50pF 344vdc 330vdc 330vdc 344vdc 10.89vdc 2.94vdc 300vdc 20.8vdc 209vdc 1.99vdc 261vdc 57.8vdc 318vdc 56.1vdc 185vdc 1.49vdc 285vdc 收音机爱好者资料库 Ra d i o Fa n s .CN Speaker: P10-Q Jensen 1k 5W 1

8、k 5W .047uF 630v 0.022uF 630v B+3 318vdc .022uF 418P .022uF 418PBias 12.5v 1MA MV 12AX7LPS Sovtek Fixed Bias Switch 7 9 2 3 7 9 2 3 Conjunctive Filter Switch Switch Power To Fils 10k 12.5v Bias Hi-V Switch 270pF 1kV 12AX7WB Sovtek 715P .0015uF 1200pF 1kV .022uF 418P 300vdc B+4 12AX7LPS Sovtek 270vdc

9、 2200pF 1kV .005uF 418P Gain Switch B+5 285vdc Treble 1MB 1uF poly 12AX7WB Sovtek 250pF 1kV 250kB Bass 25kB Middle .022uF 418P .022uF 418P Bright Switch 285vdc B+5 Fat Switch Revisions from Versions 2 & 5 shown in RED 8 ohm B+1 EL84 EL84 B+2 130/5w 25uF 10k 10W 1k5 56k 1M 56k 150k 150k 5k6 5k6 270k

10、0.22uF Blues Express Plus Version A9k The Blues Express Plus is a radical reworking of the Blues Express chassis along the lines of more traditional Trainwreck designs. The conjunctive filter is the key to getting a smooth response from this output section (which doesnt use NFB). Without the conjunc

11、tive filter the sound would be extremely brittle and harsh. In this revision a split load is used on the 2nd stage and a switch was added to lower the PI input capacitance. In this version the stock OT has been replaced with a New Sensor Deluxe OT, stock # NSC041318 This OT does not have as much pro

12、blem with oscillations as the stock OT, and the low end is much fuller. 50pF OT: NSC041318 New Sensor Brown Blue Green Black Red 4 - 1N4007 5 - 10v / 5w zeners White Black 1.5A SB Fuse 120vac Power 100uF 350v 100uF 350v 20uF 450v 220k 9k1 20uF 450v 1k/5W 20uF 450v 9k1 20uF 450v 220k 4k7 B+1 344vdc (

13、364vdc) B+2 333vdc (351vdc) B+3 319vdc (337vdc) B+4 301vdc (318vdc) B+5 285vdc (301vdc) 336vac KT-17620 100R 100uF 100v 470R / 1W 10kB Bias Adj 20-0-20vac 20uF 2k7 1uF poly 820R (2 - 4M7) 100k 10k 68k 33k 56k 47k Volume 1MA 100k 100k 20uF 1k5 1M 0.22uF poly 1kV 39pF 22pF Mica 418P .01uF 1kV 50pF fro

14、m Ken Fischer Inspired by designs Rev.07-04-01 344vdc 330vdc 330vdc 344vdc (10.89vdc) 20.8vdc 261vdc 57.8vdc 56.1vdc 209vdc 1.99vdc 2.94vdc 185vdc 1.49vdc 收音机爱好者资料库 Ra d i o Fa n s .CN 收音机爱好者资料库 Ra d i o Fa n s .CN Notes on WRECKXPR.PDF Version Number: Notes A0: This is supposed to be pretty close t

15、o a real Express. Certain rumors were added in like the parallel coupling caps between the 2nd and 3rd stage A1 and A1a: These came from someone who has seen the inside of a real Express. and lived to tell about it. I suspect that A1a is more accurate than A1 A1b: Similar to A1a, but I drew in a pos

16、sible RC network bypassing the tone stack that was reportedly seen on at least one Express. A2: This is probably based on Callaham clone and not a real Wreck. The 50pF treble cap, 1M treble cap and .001uF/56k cap/resistor after the 2nd stage all contribute to a brighter, less gainy sound than is pro

17、duced by a real Express. (It was this schematic that was originally distributed as the Trainwrecked Expresso.) A3: This schematic is based on a DIY clone. A4: This schematic is based on a different DIY clone. A5h: This is the final version of the original lower gain Blues Express amp (which was base

18、d on the Callaham schematic in version A2). Chimey like a Vox or BF Fender at lower gain settings, but when cranked up it was more like the Vox. A6: This was reportedly based on one of Allesandros amps. A7: This was a clone built by Voodoo Amps. A8a: This was an early rebuild of the Blues Express af

19、ter I added a conjunctive filter to version A5h. A9h: This is the final version of the Blues Express Plus. Note that the 47k grid stopper on the 1st stage and the 100k grid stopper on the 2nd stage have been eliminated, and except for the various mode switches is closer to version A2 than the earlier incarnations of the Blues Express/Plus. 收音机爱好者资料库 Ra d i o Fa n s .CN