Blog: The Multi-Amp Rig--How to Do it Right

Re: Blog: The Multi-Amp Rig--How to Do it Right

Whenever I played around with a stereo setup, I would always use a stereo effect at the end of my pedal chain, since I'm almost always using a bunch of stompboxes.
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

Two names you should know if you're into running multiple amps. Lehle if you can spend big. Radial if you're on a budget.

http://www.sweetwater.com/store/det...g&matchtype=&gclid=CPWuq7uBrrsCFcxAMgodPWkAJQ
And Voodoo ... And Rocktron ... And Carl Martin. You oversimplify it.

As a D.Loop owner, I can attest to Lehle's build quality, but there are much more practical, if ultimately less insane ways to get the same results.

 
Re: Blog: The Multi-Amp Rig--How to Do it Right

Whenever I played around with a stereo setup, I would always use a stereo effect at the end of my pedal chain, since I'm almost always using a bunch of stompboxes.

do they cleanboost up your signal to send full power in each direction, btw, or do you get 50% into each only? always wondered about that.
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

And Voodoo ... And Rocktron ... And Carl Martin. You oversimplify it.

As a D.Loop owner, I can attest to Lehle's build quality, but there are much more practical, if ultimately less insane ways to get the same results.


You're right, there's some good switching systems out there, and you pretty much need one if you don't want a loud hum by simply splitting with a stereo pedal.

It is funny that the two companies I mentioned are the ones on your board. The Radial Big Shot ABY box looks like a good one for the money, since it's got the vital features like phase reversal, isolation, and ground lift. Is your Twin City a better version of that? They both appear to be similar.
 
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Re: Blog: The Multi-Amp Rig--How to Do it Right

do they cleanboost up your signal to send full power in each direction, btw, or do you get 50% into each only? always wondered about that.

Hey Adieu, most of the pedals in my collection are Boss, and all Boss pedals are buffered. The feature compensates for signal drop (some say it's better than true-bypass), but there is some alteration in the overall tone due to the buffering. This is a complaint that a lot of people on the internet have against Boss stompers. I never really noticed it because, after I hook up my signal chain(s), I dig into the amp's EQ to set up my dry tone before adjusting individual effects' knobs.
 
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Re: Blog: The Multi-Amp Rig--How to Do it Right

An a/b/y box doesn't have to have any other parts than some lead and a 3 way stomp. I'd like to make one similar to the radial box and add switchable buffers to the outputs. That part count is still under 10 components, and nothing will be more expensive than the box.

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Re: Blog: The Multi-Amp Rig--How to Do it Right

What a great article! That is one of the best blog postings I've ever seen on here.

The unbuffered "Y" method does have one drawback that I didn't see mentioned in the article - that the input stages of the two amplifiers can interact. i.e.: Adjusting the input level of one amp can make the other amp louder or quieter.

I use an MXR stereo chorus at the tail end of my effects chain to split the signal into two similar-powered, differently voiced amps. I don't always engage the chorus, but it acts as a buffered splitter when in bypass mode. Sounds great either way.

To minimize the risk of ground loops (or split phase power issues) it is best to power both/all amps and your pedalboard from the same electrical outlet.

Now I want to try out a few different amp pairings this weekend...
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

An a/b/y box doesn't have to have any other parts than some lead and a 3 way stomp. I'd like to make one similar to the radial box and add switchable buffers to the outputs. That part count is still under 10 components, and nothing will be more expensive than the box.

Sent from my DROID RAZR using Tapatalk
WRONG.
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

You're right, there's some good switching systems out there, and you pretty much need one if you don't want a loud hum by simply splitting with a stereo pedal.

It is funny that the two companies I mentioned are the ones on your board.
Hehe, yes! The irony was not lost on me. :)

The Radial Big Shot ABY box looks like a good one for the money, since it's got the vital features like phase reversal, isolation, and ground lift. Is your Twin City a better version of that? They both appear to be similar.
You know, I really don't know! I was under the impression that the Twin City replaced it, but I really don't know ... The phase switch is the most important part of that pedal, as I have quickly found out that not all of my amps are in the same phase.
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

The Ebtech Hum X worked for me -

http://www.ebtechaudio.com/humxdes.html

I had a pretty bad ground loop when I tried running a stereo rig, even when I sourced all my power off the same power strip. This gizmo fixed the problem when I plugged my dual recto into it. It's about $70 at G.C. -
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

^ Ebtech makes great products, they come in very handy for my day job!
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

Do to lack of funds to purchase a Headbone VT our bass player loaned me a 4x10 cab for my no.2 amp. I used a cheap Behringer A/B pedal to switch between them and it worked really well.
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

The Radial Big Shot ABY box looks like a good one for the money, since it's got the vital features like phase reversal, isolation, and ground lift. Is your Twin City a better version of that? They both appear to be similar.

The Twin City is active, i.e. needs a 9v. The Big Shot does not. How exactly the Twin benefits from the battery I've no clue.
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

The Twin City is active, i.e. needs a 9v. The Big Shot does not. How exactly the Twin benefits from the battery I've no clue.
The Twin can take 9-12V, actually. I've not A/B'd different power supplies to see if there is a difference. The Twin has LEDs, which need power (the LEDs are very helpful). Twin also has drag control for matching impedance. It also has a buffer. I do not know if these features are dependent on the power supply.
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

Radial has a cool pedal that allows you to have one cab, two heads AND you can switch between the two heads! awesomeness! I choose my Thunderverb50 and an axefxIII :headbang:
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

It seems like the idea of the non powered switch is the best, just because it eliminates yet one more chance of a ground gremlin, having the two amps and the switch all on the same electrical circuit.
 
Re: Blog: The Multi-Amp Rig--How to Do it Right

It seems like the idea of the non powered switch is the best, just because it eliminates yet one more chance of a ground gremlin, having the two amps and the switch all on the same electrical circuit.

According to Radial:

tonebone.com said:
To eliminate hum and buzz from ground loops, the Twin-City is equipped with an isolation transformer on output B. This is augmented with a ground lift switch and 180º polarity reverse switch that ensures both amplifiers play in phase while noise is reduced to an absolute minimum even when using older vintage amps that are generally more prone to noise. As a buffer, the Twin-City lowers the impedance and susceptibility to noise, making it the ideal signal driver for large stages when using long cable runs.
 
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