question about A/B selector,two seperate stacks

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rex
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question about A/B selector,two seperate stacks

Postby rex » Tue Apr 21, 2009 10:15 pm

have been thinking about this & ive had no experience with it,(only band that i know that did this big time was hatebreed when they went through a few years of only having one guitarist,im sure there are many more examples out there)was thinking of running my marshall mode four & peavey 5150 if band im in cant find second guitarist.but would like some techs advice if possible.
just exploring an option.

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matt youwin
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Re: question about A/B selector,two seperate stacks

Postby matt youwin » Tue Apr 21, 2009 10:29 pm

Morley A/B selector, cut the mids on the marshall and boost them on the 5150

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Re: question about A/B selector,two seperate stacks

Postby rex » Tue Apr 21, 2009 10:31 pm

fuck thats funny i have brento at my house right now & he said i should ask you about it haha

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matt youwin
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Re: question about A/B selector,two seperate stacks

Postby matt youwin » Tue Apr 21, 2009 10:37 pm

:lol:

rex wrote:fuck thats funny i have brento at my house right now & he said i should ask you about it haha



fuck mate be careful!

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Re: question about A/B selector,two seperate stacks

Postby rex » Tue Apr 21, 2009 10:40 pm

haha i thought everyone would say that to him about me,ginges look out for each other.

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Re: question about A/B selector,two seperate stacks

Postby imperiumdiabolus » Tue Apr 21, 2009 11:48 pm

been in a similar situation before and done the same thing,had a cheap as a/b box that cost 60 bux or if you know someone who's handy with a soldering iron they're piss easy to make.

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Re: question about A/B selector,two seperate stacks

Postby dclxvi » Wed Apr 22, 2009 12:23 am

matt youwin wrote: cut the mids on the marshall


8O 8O 8O 8O 8O 8O 8O 8O 8O 8O 8O 8O 8O

WAT
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matt youwin
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Re: question about A/B selector,two seperate stacks

Postby matt youwin » Wed Apr 22, 2009 8:51 am

dclxvi wrote:
matt youwin wrote: cut the mids on the marshall


8O 8O 8O 8O 8O 8O 8O 8O 8O 8O 8O 8O 8O

WAT


sorry...

matt youwin wrote: cut the mids on the mode four

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slaughter
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Re: question about A/B selector,two seperate stacks

Postby slaughter » Wed Apr 22, 2009 12:08 pm

In Revenge Pepe used to run two set ups, then switch just to one of the amps any time there was a guitar break. Then when the band comes in switch the second amp back in. Gives you a bit of dynamics so it actually sounds like a two guitar band. Theres also a way to set them up with a short delay between them so it has the natural sound of two guitarists (one being very slightly behind the other).
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toothbrush
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Re: question about A/B selector,two seperate stacks

Postby toothbrush » Wed Apr 22, 2009 12:23 pm

Brian may does the delay pedal with a fraction of a second delay to sound like two guitarists thing

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Green Bastard
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Re: question about A/B selector,two seperate stacks

Postby Green Bastard » Wed Apr 22, 2009 2:15 pm

never knew brian may played through 5150s and mode4s
only issue with the cheap ones is the signal gets slightly diminished on each output, also sometimes get the horrible buzz from groundloops or some shit, some amps just dont seem to like going together.
cheapest option would be if you already have a boss tu2. just use the 2 outputs, then switching on the tuner cuts one for if you wanna do a "one guitar" breakoff bit like nat was sayin

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Re: question about A/B selector,two seperate stacks

Postby Akuma » Wed Apr 22, 2009 4:11 pm

slaughter wrote:In Revenge Pepe used to run two set ups, then switch just to one of the amps any time there was a guitar break. Then when the band comes in switch the second amp back in. Gives you a bit of dynamics so it actually sounds like a two guitar band. Theres also a way to set them up with a short delay between them so it has the natural sound of two guitarists (one being very slightly behind the other).


Ahh what a cool idea.
Image

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matt youwin
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Re: question about A/B selector,two seperate stacks

Postby matt youwin » Wed Apr 22, 2009 4:13 pm

I would've thought that would just make it sounds phasey? Someone prove me wrong please?

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clancy
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Re: question about A/B selector,two seperate stacks

Postby clancy » Wed Apr 22, 2009 4:24 pm

oi bro your wrong.

Image

Image

Image

they will be more out of phase it the aren't delayed.

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clancy
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Re: question about A/B selector,two seperate stacks

Postby clancy » Wed Apr 22, 2009 4:26 pm

depending on the time delay they could sound pretty washy / phasey though - different heads and cabs should help change this - you know - colour the frequencies.

:)

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matt youwin
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Re: question about A/B selector,two seperate stacks

Postby matt youwin » Wed Apr 22, 2009 4:26 pm

*you're


why is the second wave automatically 180 degrees out of phase with the first? we're talking about two guitar amps fed from a splitter box......

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clancy
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Re: question about A/B selector,two seperate stacks

Postby clancy » Wed Apr 22, 2009 4:27 pm

haha, I dunno, see my second post, I just wanted to post some graphs.

haha

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matt youwin
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Re: question about A/B selector,two seperate stacks

Postby matt youwin » Wed Apr 22, 2009 4:28 pm

your fancy graphs aren't helping, could you draw a diagram on the blackboard Sir?

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clancy
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Re: question about A/B selector,two seperate stacks

Postby clancy » Wed Apr 22, 2009 4:44 pm

I dont have paint and photoshop is too hard - i think your hypothosis is correct.

i forgot to label x and y

one of them is time.

Image

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matt youwin
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Re: question about A/B selector,two seperate stacks

Postby matt youwin » Wed Apr 22, 2009 4:46 pm

:lol: :lol: :lol:

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Re: question about A/B selector,two seperate stacks

Postby Phlegethon » Wed Apr 22, 2009 6:53 pm

if the 2 sound waves were oposite, woodnt it cancel out the noise?

rex
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Re: question about A/B selector,two seperate stacks

Postby rex » Wed Apr 22, 2009 7:37 pm

ok thanks for all this,if this is going to happen as im still yet to discuss this idea with the band whats the best A/B selector im well & truely over cheap gear

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Re: question about A/B selector,two seperate stacks

Postby slob » Wed Apr 22, 2009 7:56 pm

no led=3jacks, dpdt footswitch, enclosure.

with led=3jacks, 3pdt footswitch, led, resistor, battery and/or dc jack, enclosure. get another different coloured led and another resistor for 2 leds.

bout $20-30 (all at jaycar except maybe 3pdt) + 1/2 hrs work.

really short (20-30ms) stereo delay sounds fucken rad, but you'd need a stereo a/b for switching then...

if you reversed hot&earth for one amp the phase cancellation thing should happen, also depends on speaker placement.

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slaughter
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Re: question about A/B selector,two seperate stacks

Postby slaughter » Wed Apr 22, 2009 8:10 pm

if one guitar sound is in phase, and the second is out of phase then it will cancel some frequencies.

if you delay them slightly its just a mild chorus effect. aka making it sound bigger.

Rex, dont go for a cheap splitter and always use the same power for both amps.

this is what you should get...

Image
http://www.radialeng.com/re-hotshot-abi.htm

edit * these have a ground lift to remove any buzz you may get.
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Re: question about A/B selector,two seperate stacks

Postby Green Bastard » Thu Apr 23, 2009 1:58 pm

whats that one nat? i was looking at these when i was thinkin of doin this shit.
http://www.radialeng.com/re-bigshot-aby.htm

nearly trade one for some cds with a dude in the states, then decided i didnt actually need 2 amps since i was in bands with 2 guitarists, where the other guitarist was better than me in all cases

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slaughter
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Re: question about A/B selector,two seperate stacks

Postby slaughter » Thu Apr 23, 2009 8:28 pm

haha thats the one i was looking for. geeking out when stoned and hadnt seen that radial one before.

you want the one james linked.
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Re: question about A/B selector,two seperate stacks

Postby pepe » Fri Apr 24, 2009 2:37 pm

I have a radial bigshot that i used for a 2 amp setup in the wrongmen...its probably the only cheap a/b splitter you can get thats usable.

the 180 polarity reverse switch is really important cos if the amps are out of phase they cancel each other out.

it has a ground lift that stops the really loud buzzing you can sometimes get from 2 amps...the only problem with it is you get a loud pop when you switch between amps cos its passive.

Might be slightly easier to electrocute yourself.
When it works it sounds huge.

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Bernie Galaxy
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Re: question about A/B selector,two seperate stacks

Postby Bernie Galaxy » Sat Apr 25, 2009 11:43 am

Those are rather cool

Radial DI's are pretty yum but I didn't know they made these also

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general
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Re: question about A/B selector,two seperate stacks

Postby general » Sat Apr 25, 2009 12:52 pm

phaedrus wrote:that doesn't mean you can't be the loudest... fuck skill, volume all the way \m/


preach it

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Re: question about A/B selector,two seperate stacks

Postby SG_SS » Wed Jul 08, 2009 10:32 am

Lehle Little Duo is the winner for me.

You'll find your guitar tone changes depending on which Amp you use to power the guitar with.
The Little Duo has an Isolating Transformer on Output A, eliminating ground loop Hum and the B output is then "Direct" to the Amp.
Use the B output on the Amp you think gives you the best tone.

Plus the pedal can be used to switch between the channels A/B.

Top Quality German Engineering. Sturdy as hell, their patented Isolating Transformer is regarded as one of the best in the business and anything but Cheap.

If you don't want to switch Amps on or off during your songs they also have a pedal called the Lehle P-Split II.
Again it has an Isolated output and a Direct output to the Amps, as well as a handy Polarity reverse switch in case your rigs are wired out of phase with each other, but no switches between the output channels

In Phase = Louder and is very easy to tell the difference. The little polarity reverse switch helps save a lot of time.

Alternatively if one of your heads has a line out you can use it to run across to the other head. Use the head that gives you the best tone to "drive" your guitar with.
Again if the polarity of your rigs are reversed it will take some troubleshooting to find out where and why this is happening.


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