Anyone own a Peavey 6505+?

[MDV]

I do and I dont, respectively. Though I have a decimator. I just never bother.

[CommonCourtesy]

Thanks for the info Agent! Very help and insightful!

Are you suggesting I have 2 noise suppressors then in my setup?! e.g. an NS-2 in the loop and an ISP decimator in the front end?

My set up is very simple. I aim to use the channel switch to go from a clean/crunch sound to lead, then kick on the tubescreamer whenever i'm on the dirty channel. Other pedals are a wireless receiver and a boss tuner.

This is my board:



Obviously when i upgrade the amp the footswitch will be different. Where will the NS-2 or ISP decimator go?

If only using it in the FX loop i could just put the pedal at the back of the amp with 2 leads going into send/return?

Don't want all these extra cables kicking around my feet!

[Dave Sloven]

The G-String goes out front AND in the loop.  The circuit for the front end only senses when there is a signal coming from the guitar, and tells the noise reduction circuit (the part in the loop) about it.  It has four jacks.

GUITAR IN
GUITAR OUT (these are the two you use after the tuner)

DEC IN
DEC OUT (these are the two you use in the beginning of the loop, after the EQ pedal if you have one)

The G-String is the unit on the left in this video.

http://www.youtube.com/watch?v=pwqQ8cg4yko

I have a Pedaltrain which makes wiring it all a little neater as stuff is routed underneath, including the power supply, but it cost me a fair bit of coin.  I hear though that you can make something similar out of stuff from IKEA (wooden though)

You will need a 9V power supply to run a Decimator of either type.  9V batteries won't cut it

This video gives a better idea of the jacks.  It has the older version of the G-String but they are almost the same as the new one.  He should have the overdrive after the pedal though.  Wah and tuner before pedal is okay, but you want as much of your unaffected guitar signal as possible going into the 'Guitar In'

http://www.youtube.com/watch?v=_WvM-SY9c98

[CommonCourtesy]

Right, so I'd put it after my tubescreamer, with a patch cable going into the DEC IN?

Then another 2 leads going from send-return in the amp?

Think that's how i do it?

[Dave Sloven]

Right, so I'd put it after my tubescreamer, with a patch cable going into the DEC IN?

Then another 2 leads going from send-return in the amp?

Think that's how i do it?

As I said above, I have the tube screamer after the Guitar Out.  Not sure why the guy in the video has it first.  If you have a pedal tuner put that between your guitar and the ISP.  You can run a wah (if you have one) before or after, it doesn't really matter.  But the gain stages should be between the two circuits of the ISP.

Despite some of the misinformation in the comments section of that video (clearly written by people who haven't owned one) there is no gate in the front end section of the pedal.  It is only a circuit that senses when you are playing and tells the other circuit what to cut.

Guitar  -> tuner -> G-String guitar in/out -> FRONT END PEDALS LIKE TUBE SCREAMERS -> amp input preamp loop send -> G-String DEC in/out -> MODULATION AND TIME-BASED EFFECTS -> loop return

[CommonCourtesy]

Well isn't that to combat noise coming from the guitar? I don't really have much noise from my guitar, its the amp noise i'm worried about, and of course kicking on extra overdrives will make it even more noisy.

So surely the ISP should be after the tubescreamer?

[Dave Sloven]

See the edit to my previous post.

GUITAR OUT -> OVERDRIVE/DISTORTION -> PREAMP -> DEC IN

The Guitar In/Out stage provides no noise reduction.

[CommonCourtesy]

Yeah just seen the edit, i've seen the early version ISP demo video on youtube before, i'll probably get the similar model to the one he's using.

when you say "PREAMP" do you mean the send on the FX loop?

[Dave Sloven]

I mean the preamp as the part between the amp input and the effects loop send.  The effects loop return goes to the power amp.

I struggled setting up the G-String but nutted it out with the help of people here.

https://bareknucklepickups.co.uk/forum/index.php?topic=30383.0

[CommonCourtesy]

So the way you've set it up,



the cable going into the input of the tubescreamer runs into the send of the ISP? I can't see what the input is from the photo.
Where's the blue-ish cable running to from the IN of the ISP? Unless its the send of course..

[Dave Sloven]

Looking at that photo the two cables going up are the effects loop ones.  On the left is the DEC OUT going back to the loop return; on the right is the DEC IN coming from the loop send.  I still use this same basic setup, although I have added a wah before the tuner and a few other pedals in the front end and in the loop.

My board looks like this now:



I should get the flanger on Monday or Tuesday in the mail - it will be the first pedal after the DEC OUT.  Currently the chorus pedal is the first after that, but flangers and phasers generally go before chorus.  I actually have my phaser in the front end after my screamer, but it will work pretty much anywhere. Flangers though work better in the loop after the noise reduction.

Note how I have placed the Peavey footswitch on the board (I removed the rubber feet and added velcro to the back).  This was done to protect the cable, which my friend with the 5150 II has had a lot of trouble with because someone (probably their vocalist) stepped on it.  Where I have placed it the cable connector is very protected.  They are expensive to replace.

There is a T-Rex Fuel Tank Chameleon power supply mounted under the top left corner.

[CommonCourtesy]

Right i see now, so with my board, the only thing i'd need to switch is put the ISP (if i get one) after the TU-2, so with a patch cable going into the IN of the ISP, before going into the Tubescreamer which will run into the front of the amp. Then run 2 cables into send/return of the amp?

[Dave Sloven]

Right i see now, so with my board, the only thing i'd need to switch is put the ISP (if i get one) after the TU-2, so with a patch cable going into the IN of the ISP, before going into the Tubescreamer which will run into the front of the amp. Then run 2 cables into send/return of the amp?

That's basically right, if you are using the G-String version of the Decimator.

If you are using the regular one you run it in the same spot in the loop, but without the 'Guitar In/Out' circuit in the front end after your tuner.  As I said above what that does is it tells the other circuit when you there is a signal coming from the guitar.

Whatever you place ahead of the 'GUITAR IN' it will basically treat like it is the raw signal from your guitar.  When my tuner is off it is pure bypass so it only sees the guitar and the wah.  The only reason I put the wah first was ease of routing cables.  The only problem I've ever had with that was the other day when a friend had been playing my guitar and I didn't realize that he left the wah on.  I couldn't get the tuner to work until I switched the wah off again, it kept giving me strange readings.  When I had the tuner after the GUITAR OUT jack I got a weird noise when I was tuning.  Where I have it now is the best

[CommonCourtesy]

Yeah, why is the newer version of the Decimator called the "G string"? And i've noticed compared to the previous model there's 3 inputs now on the G String and just an in/out on the previous one. The G string will be easier cos its less cables? Although i could put the Original version at the back of the amp with patch cables running from send/return?

Ahead of the "guitar in" will be my tuner. TU-2's are true bypass right?

[Dave Sloven]

The G-String has two circuits, each with an in and out.  Hence  the four cables.

The regular Decimator just has an IN and an OUT.  These are equivalent to the DEC IN and DEC OUT on the G-String.

I think I've been over this ... it works differently from an NS-2.

The front end circuit is only to sense when a signal is coming from the guitar.  The big problem with noise suppressors is them clamping down on sounds you actually want to hear, and the extra circuit in the G-String is a way to overcome that.

The main differences between the first generation and the 'II' models (of both types, Decimator and Decimator G-String) is a linking facility for joining more than one pedal together.  I've not needed this.  I find that the G-String set up properly is sufficient to kill most noise.  I also don't have the threshold as high as the guy in that video.  You put it just above where it cleans up the 'noise floor' - on this type of amp that's between 11 and 12 o'clock on the dial.  You will hear it.

Why ISP called it a G-String I don't know ... I'm guessing it is because it senses the vibration of the guitar string ... I think they were trying to come up with something 'sexy' but maybe it just got up the designer's ass trying to figure it all out ;)

http://www.isptechnologies.com/portfolio/decimator-ii-g-string-pedal/

The G String Pedal tracks the signal directly from the guitar, which allows you to switch from clean to high gain without ever changing the threshold setting.

People love it because it's a 'set-and-forget' unit

The Decimator™ II G String has 4 ¼ inch jacks. Connect the guitar directly to the Guitar IN. Connect the Guitar OUT to the input of the amplifier. Connect the DEC IN to the loop send and DEC OUT to the loop return. For best performance place all gain pedals in front of the amplifier and DEC IN. You can put Delay and Reverb effects pedals after the Decimator™ II G String and before the loop return to avoid cutting off reverb and delay tails.