G-major switching Recto Pre channels?

[vipmetal]

I've heard rumors that G-major relays cannot be used to switch channels on Mesa Rectifier series amps? How about Rectifier Preamp? Anyone here using G-major with Recto Preamp for switching channels and vintage/modern mode, just bought G-major and heard these bad news...

 

[jaquetapus]

I think the deal with the Rectifiers is that the external switch jacks cannot share a ground. The G-Major has one TRS ext switch jack, so I'd think you can use it to switch one of the functions, but not both.

-dave

 

[msi]

The issue with the Dual Rectifier and the G-major comes in that the ground connection of the external jacks are not all at ground potential. For instance, the solo function is at -3v where as the channel switches depend on which channel your switching to. This can cause shorts and damage the rectifier because the g-major shares a common ground between the two relay's it has. Looking at the schematic for the rectifier pre all the switching shares ground at +0v, or no voltage. I don't see why it would not work. I've used a g-major on the two channel rectifier with no issues for the same reason. All the external jack grounds are at the same voltage potential.

 

[vipmetal]

So I'll be safe using both of G-major relays with the Recto Pre? 8)

Thanks a lot for your answer! I thought that I would be limited to use only one relay as suggested there and on other forums... so I have no problem with this in my setup.

 

[msi]

Yes, but your misunderstanding the purpose of the vintage/modern jack. It is used to switch the 2:100 to modern mode. You cannot switch the recto pre into modern mode using that jack. The only two jacks the g-major can control are the Channel and Solo functions.

 

[vipmetal]

Recto Pre's 2nd channel can be set to switch between modes, if modern mode is selected. Solo boost-function is only working on Vintage mode (if selected on a switch). And because G-major can handle solo boosting, I'm looking forward to use both modes live. Gain and EQ settings are of course the same, sadly. But with G-major EQ something can be done... But I'm very happy that I can do my switching duties with G-major alone.

 

[again with this]

I've heard rumors that G-major relays cannot be used to switch channels on Mesa Rectifier series amps? How about Rectifier Preamp? Anyone here using G-major with Recto Preamp for switching channels and vintage/modern mode, just bought G-major and heard these bad news...

Fear not! I am here to tell you the GMajor will do the relay switching for the Recto pre. I know, because I have been doing it for a couple years.

You will need a "Y" cable. Stereo 1/4" to L and R mono. The stereo/balanced end goes to the Recto Pre and the other two come out of the GMajor. Program your GMajor's relays accordingly.

The Recto pre manual says something about grounding, but I haven't had a problem yet.

Good luck!

Oh, re-read your post... Vintage and Modern aren't foot switchable at all... Yeah, it sucks. The switching is the hugest design defect of the Recto Pre. Really, who needs to go from "clean" to "dirty" as much as varying levels of gain within each, "clean" and "dirty", channel?

On the heads though, can't you do "channel cloning"? I mean you loose the green channel but you can have an orange and a red. Not sure though, never had a Recto head, your mileage may vary.

 

[vipmetal]

Fear not! I am here to tell you the GMajor will do the relay switching for the Recto pre. I know, because I have been doing it for a couple years.

You will need a "Y" cable. Stereo 1/4" to L and R mono. The stereo/balanced end goes to the Recto Pre and the other two come out of the GMajor. Program your GMajor's relays accordingly.

The Recto pre manual says something about grounding, but I haven't had a problem yet.

Good luck!

Oh, re-read your post... Vintage and Modern aren't foot switchable at all... Yeah, it sucks. The switching is the hugest design defect of the Recto Pre. Really, who needs to go from "clean" to "dirty" as much as varying levels of gain within each, "clean" and "dirty", channel?

On the heads though, can't you do "channel cloning"? I mean you loose the green channel but you can have an orange and a red. Not sure though, never had a Recto head, your mileage may vary.

I have Recto Pre also myself, so hearing this helps a lot. But my manual says that if you set the channel2 toggle switch on modern, you'll be able to footswitch between Vintage and modern modes. And that solo boost is only on vintage mode. With my Recto preamp I've had success in doing so also. Try to set the switch on channel 2 to modern and then use solo boost button to switch between those to modes.. so only thing I can't control between those two modes is gain. I have a parametric EQ on G-major to make both sound good. I'm intending to use modern on my rhythm sound and vintage on lead-sound... as soon as I have my preamp returned from service... :?

Thanks for the input!

 

[again with this]

Fear not! I am here to tell you the GMajor will do the relay switching for the Recto pre. I know, because I have been doing it for a couple years.

You will need a "Y" cable. Stereo 1/4" to L and R mono. The stereo/balanced end goes to the Recto Pre and the other two come out of the GMajor. Program your GMajor's relays accordingly.

The Recto pre manual says something about grounding, but I haven't had a problem yet.

Good luck!

Oh, re-read your post... Vintage and Modern aren't foot switchable at all... Yeah, it sucks. The switching is the hugest design defect of the Recto Pre. Really, who needs to go from "clean" to "dirty" as much as varying levels of gain within each, "clean" and "dirty", channel?

On the heads though, can't you do "channel cloning"? I mean you loose the green channel but you can have an orange and a red. Not sure though, never had a Recto head, your mileage may vary.

I have Recto Pre also myself, so hearing this helps a lot. But my manual says that if you set the channel2 toggle switch on modern, you'll be able to footswitch between Vintage and modern modes. And that solo boost is only on vintage mode. With my Recto preamp I've had success in doing so also. Try to set the switch on channel 2 to modern and then use solo boost button to switch between those to modes.. so only thing I can't control between those two modes is gain. I have a parametric EQ on G-major to make both sound good. I'm intending to use modern on my rhythm sound and vintage on lead-sound... as soon as I have my preamp returned from service... :?

Thanks for the input!

Yeah, you know, I don't know what I was thinking... there are two relays. one switches between clean and dirty. the other, depending on the switch settings on the front, either is a boost for the clean or "raw/vintage" OR engages modern. there is no boost for modern... sorry for the mis information...

Your experiences are spot on.

 

[cscotto]

Hi,

I went through this mess with an amp tech and mesa boogie. The issue boogie has with the G-major (as everyone has already stated) is the grounding. In other words, using the G-major switching system could result in a ground loop. I have a Recto-pre and I use the G-major to switch channels. I also had a ground loop. Eliminating the ground loop was easy: use a three prong to two prong adapter ON THE G-major, not on the amp! Switching works beautifully and no ground loop.

HTH

 

[Lonerock]

Hi, I had both, and I never had any problems with that.
regards,
Chris