Captain Morgan
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- Dec 15, 2022
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if you are reading this i'm sure one of these things apply to you. I play in a Dropkick/Flogging Molly type band. We have accordion, organ , banjo ,and mandolin. We also cover a large song set when we do our in house gig where we host at the pub for 4 hours. Well I have painstakingly experimented with multiple configurations on how to accomplish what i need as my band grows and changes, so i thought i would post my findings as i see it continuously searched for. I was using a Supro Galaxy II for 2 years. channel switcher with fx loop. It got the job done but it was lacking something. Introduced the 71 JMP 1987 to the mix. Here's what I got going on and it's killer.
71 JMP 50 watt small box. 6550's NMV power transformer is putting out over 500v. The tech had to do something to allow that to be ok. don't ask me what. bench tested at 72 watts of output power.
Marshall VS412 cabinet. fits the head perfectly. Loaded with (3) vintage 30 and (1) eminence wizard
Weber Mass 100 attenuator
Saturnworks buffered ABY pedal
Boss SD-1
Soulfood OD
Arena Reverb
Donner Delay
guitar - Reverend with P-90's
So with the way the amp voltage is running my tech says my amp has more headroom and louder. without an attenuator playing any of our live shows would be impossible. This thing is brutallly loud. i honestly dont know how anyone dimes these with out one.
To get the gain and body i like i run the controls like so... using numbers on amp. not clock
volume i - 7.5 brings a really nice roar
volume ii - 5
prescence - between 5-8
bass - 5
middle - 7
treble - 5
aby into high input channel i and low input channel ii
if you use a cheap aby box, channel i will jump into ii a little. you can test this by activating chii and pulling the cable out of the amp on ch.i. you will notice it darken up quickly. this was a problem as i like ch ii without the bleed. the saturnworks pedal is impecable as in it does not effect anything unless you activate it. The cheap aby box also made it seem as if the delay was adding a harsh high end. the buffered aby solved that and i was able to eq the amp so my tone stays the same with pedals engaged. except the o.d's which i have set for different tones.
my cleans are all done on ch.ii. The high input would work too but running into the low input i dont have to lower my guitar volume as much. beautiful robust full cleans and brightens up and gets a lil gritty when i dig in. i use my boss od for solos with the volume 1/4 up and the gain just above half. great bluesy leads for days. tons of sustain. i run the boss before the delay and reverb which stay on for our The Clash style songs.
my rhythm tone is the y channel. channel i and ii at the same time. I love it. it growls. i end up turning my guitar volume back a hair for less gain. the volume knobs on the amp at this point are basically tone controls. 7.5 is the sweet spot. Channel i by itself sounds very good but i feel using the y box adds a small amount of depth that i like. with the gain that high on the amp the boss is useless.
For solos i run the soulfood with the volume and gain at about 4. nice rich gain and sustain. tightens up the lows and adds clarity.
as far as a clean lead boost, with the amp dimed there is no way to get a volume boost. with 900 instruments in our band it's not as easy as having the rhythm guitarist just play lighter or roll tone down so i poke out. The Supro had a boost function that hit just the power section and would put me right where lead vox sit. I feel that is the best spot for soloing rather than turning my eq into something i dont find pleasing on higher strings and frets. Solution - i found a tone king ironman ii. i will use the solo footswitch to UNattenuate myself 3 db.
That should do what the Supro did wonderfully.. i will follow up with how it works when it comes in tomorrow.
videos to follow.
Hope this helped someone.

71 JMP 50 watt small box. 6550's NMV power transformer is putting out over 500v. The tech had to do something to allow that to be ok. don't ask me what. bench tested at 72 watts of output power.
Marshall VS412 cabinet. fits the head perfectly. Loaded with (3) vintage 30 and (1) eminence wizard
Weber Mass 100 attenuator
Saturnworks buffered ABY pedal
Boss SD-1
Soulfood OD
Arena Reverb
Donner Delay
guitar - Reverend with P-90's
So with the way the amp voltage is running my tech says my amp has more headroom and louder. without an attenuator playing any of our live shows would be impossible. This thing is brutallly loud. i honestly dont know how anyone dimes these with out one.
To get the gain and body i like i run the controls like so... using numbers on amp. not clock
volume i - 7.5 brings a really nice roar
volume ii - 5
prescence - between 5-8
bass - 5
middle - 7
treble - 5
aby into high input channel i and low input channel ii
if you use a cheap aby box, channel i will jump into ii a little. you can test this by activating chii and pulling the cable out of the amp on ch.i. you will notice it darken up quickly. this was a problem as i like ch ii without the bleed. the saturnworks pedal is impecable as in it does not effect anything unless you activate it. The cheap aby box also made it seem as if the delay was adding a harsh high end. the buffered aby solved that and i was able to eq the amp so my tone stays the same with pedals engaged. except the o.d's which i have set for different tones.
my cleans are all done on ch.ii. The high input would work too but running into the low input i dont have to lower my guitar volume as much. beautiful robust full cleans and brightens up and gets a lil gritty when i dig in. i use my boss od for solos with the volume 1/4 up and the gain just above half. great bluesy leads for days. tons of sustain. i run the boss before the delay and reverb which stay on for our The Clash style songs.
my rhythm tone is the y channel. channel i and ii at the same time. I love it. it growls. i end up turning my guitar volume back a hair for less gain. the volume knobs on the amp at this point are basically tone controls. 7.5 is the sweet spot. Channel i by itself sounds very good but i feel using the y box adds a small amount of depth that i like. with the gain that high on the amp the boss is useless.
For solos i run the soulfood with the volume and gain at about 4. nice rich gain and sustain. tightens up the lows and adds clarity.
as far as a clean lead boost, with the amp dimed there is no way to get a volume boost. with 900 instruments in our band it's not as easy as having the rhythm guitarist just play lighter or roll tone down so i poke out. The Supro had a boost function that hit just the power section and would put me right where lead vox sit. I feel that is the best spot for soloing rather than turning my eq into something i dont find pleasing on higher strings and frets. Solution - i found a tone king ironman ii. i will use the solo footswitch to UNattenuate myself 3 db.
That should do what the Supro did wonderfully.. i will follow up with how it works when it comes in tomorrow.
videos to follow.
Hope this helped someone.

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