Rightclick to save the file or leftclick to open from your browser. The best modern replacement for the cts 15 speaker that was in the b15 is an eminence delta 15a. Catch but a glimpse of an ampeg combo like this 1966 gemini ii g15 and youre thinking jazz club. Rocket series reverb rocket 2 reverb rocket 3 reverb rocket 12r reverb rocket 12rb reverb rocket 12rt rocket no reverb 12a super reverb 15 r sb series sb12p portaflex sb12. They are what they arethe method of biasing is the designers choice based on many parameters. Electrolytic filter capacitor kit for ampeg gemini two, g 15 power supplies. The ampeg gemini ii is a really great sounding guitar amplifier. It has a great low end presence, which i guess is a byproduct of the fact that ampeg mostly makes bass amps. The reverb, like an ampeg, is resistorcapacitorcoupled not transformer.
Ampeg g15 gemini ii tube amplifier v7591 schematic contents. If you mention this amp in conversation almost no one will know what youre talking about. This amp has probably the best tremolo ive ever heard. G15 gemini ii schematics g20 schematics g100 schematics g110 schematics g212 schematics g410 schematics. Help with ampeg gemini ii g15 filter cap values telecaster. During this time, ampeg used only 2 different pts and 2 different otsmaking 20w amps and 30w amps. Tube set for ampeg g12 gemini i, g15 gemini ii product details. Like its smaller sibling, the gemini ii is a two channel amp with separate bass and treble controls and the added ultra high and repeat percussion effects. The amp shown here has a factory optional jbl speaker denoted by the l suffix in the model number. A number of j12 jet variants also used 7591s or 7027as at higher voltages than 6l6s generally handle and can serve as reference for possible cap. Discussion in amps started by jimytheassassin, mar 10, 2017. That is, the gemini i and the gs12 reverberocket are similar. As for the phaseinverter circuit, ampeg used a rendition of the splitphase a. I was actually looking for another gemini i when this retolexed ii popped up.
This tube is no longer available, and there is no adequate substitute. The original ampeg bassman amp was an open back like the gemini. Nice and handy all tube powered 30watt guitaramp with one 15 speaker. May 28, 2018 ampeg gemini ii guitar amp part 1 rebuilding the power supply and output stage. However, when it does it brings a smile to the face of the user.
I havent met a gemini that didnt benefit from new filters. Besides that the schematic pretty clearly showed a balance pot, i was definitely confused whether mine ever had one. I also had a 67 gemini i several years ago which i sold and regretted. Amp has been gone over and basically every capacitor changed. However, i have a preference for the gemini i and especially the gemini ii over the reverberocket for most uses. Tube set for ampeg g12 gemini i, g15 gemini ii product. With almost 10 more watts of output and a 15 inch speaker it represented a more powerful alternative to the gemini i. Schematics, specifications, troubleshooting guide fault diagnosis, calibration alignment instructions, voltage check points, tube layout chart, parts list. While the 15inch speaker worked well for bass and guitar, this amp was actually originally targeted towards accordion players. I looked around the internet, and on ampeg s website, but all the prints i was able to locate were different variations of the circuit that i have.
Jet12 212ax7, 7591a duet jet12r 212ax7, 16u10, 7591a duet gs12r rocket ii 312ax7, 16u20, 7591a duet g12 gemini 12 312ax7, 16cg7, 17199, 7591a duet g15 gemini 12 early. Rich special mockingbird, ibanez rg421 amt hr1, v1, amt r1 vox mini5. Manuals list manuals for audio, music, stage and studio. B12n schematics b12nb schematic b12nc schematics b12nf schematics b12nfjp schematics b12njp schematics. Earlier this year, i bought this 6769 univox u305r. Help with ampeg gemini ii g15 filter cap values discussion in shock.
For over 60 years ampeg has been providing amplification solutions for professional bass players and aspiring bassists looking for the best bass practice amps. G12 gemini g15 gemini ii gs15r gemini iv gv22 gemini 22 j series j12a jet j12b jet j12d jet m series. G 12 gemini g 15 gemini ii gs 15 r gemini iv gv22 gemini 22 j series j12a jet j12b jet j12d jet m series m12 6v6 mercury m12a 7591 mercury m 15 mercury. The circuit should be identical to the original gemini i. While the 15 inch speaker worked well for bass and guitar, this amp was actually originally targeted towards accordion players. I did have a 65 gemini ii, but sold it for one of the reasons you mentioned big and heavy. In terms of the electronics, the amp sounds pretty good when it is up to spec. Ampeg g15 gemini ii 1x15 1965 black price guide reverb. If you want a real b 15 double baffle cabinet, check out vintage blue. Complete tube set for your ampeg gemini i g12 and gemini ii g15 includes. Electrolytic filter capacitor kit for ampeg gemini two g15, g15v, gs15r.
G12 gemini g15 gemini ii gs15r gemini iv gv22 gemini 22 j series j12a jet j12b jet j12d jet m series m12 6v6 mercury m12a 7591 mercury m15 mercury. The g 15 gemini ii was the 15 inch version of the popular 12inch g 12 gemini i. Comparing them both they are very different sounding. Mar 26, 2015 this amp has probably the best tremolo ive ever heard. Ggjaguars guitarium and ampeteria 1966 ampeg gemini ii. Ampeg heaven amp schematics schematic amplifier echotwin. The gemini ii remained in ampegs catalog until 1968 when it was superseded by the gv15 gemini 15. I have an old ampeg gemini ii g15 that i was given to restore.
The amp tech gave me a copy of the schematic, but i havent gotten around to having it installed. Ampeg is a bass amp instrument manufacturing company that specializes in bass guitar amplification and effects. Looking for a schematic for an ampeg gemini ii the gear page. Many of the above schematics are courtesy of joe piazzas backstage. Ampeg gemini ii model g15 30watt 1x15 guitar combo reverb.
Electrolytic filter capacitor kit for ampeg gemini v, g15v power supplies. The best modern replacement for the cts 15 speaker that was in the b 15 is an eminence delta 15a. Full manuals list manuals and schematics mr manuals. We have one of these at the studio where im currently working and it doesnt see as much use as it should. Im not 100% sure yet but believe i liked the od tones of the gemini i better. A number of j12 jet variants also used 7591s or 7027as at higher voltages than 6l6s generally handle and can serve as reference for possible cap values. Your new gemini ii model g15 is designed for the discriminating accordion or guitar player. Ampeg offered upgraded speakers at additional cost from c. For more ampeg v4 information see the ampeg v4 pages. The super champ xd is arguably one of the best small bedroomapartment. The gemini i delivered 30 watts of tube power compared to the 22 watts of the gemini i.
B12n schematics b12nb schematic b12nc schematics b12nf schematics. It was a fine amp, but i felt it wasnt powerful enough to justify its bulk. Akira la8633 la76810 la4285 la7642n la7840 stv5348 color tv service manual. The schematic that was inside the amp was partially damaged, so im only able to see about 23 of the circuit. Ampeg gemini ii g15 quirks music electronics forum. Ampeg gemini ii guitar amp part 1 rebuilding the power supply and output stage. Vintage 1967 ampeg gemini ii g15 1x15 tube guitar combo amp for your. Ampeg gemini ii g15 discussion in amp central station started by artie fisk, oct 16, 20. Power cord and an ampeg 2x10 200 watt bass cabinet, item condition. The super champ xd is arguably one of the best small bedroomapartment amps you can buy for the money.
Vt22v4 amp schematic 1974 magnavox vt40 amp schematic 1971 ampeg vt40 pre amp schematic 1971 joe piazza vt40 power amp schematic 1971 joe piazza also worth checking out is the blue muse unofficial ampeg page. After downloading, the file may take a moment to open in the browser. If you want a real b15 double baffle cabinet, check out vintage blue. Ampeg gemini ii guitar amp part 1 rebuilding the power. The original amp came with a two button footswitch. For additional information about ampeg amps see his website. The innovative portaflex design had the amp circuitry on a panel that flipped in for transport and storage, and out for playing. The g15 gemini ii was the 15inch version of the popular 12inch g12 gemini i. I just had to look at the sockets more clearly rather than search the internet no doubt some of the 6l6gc equipped g15 models were.
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