Chords for Marshall JMP MK-1 Super Bass Amp Demo with 1552 2x15

_ _ _ _ _ Hi guys, my name is Matthew.
This time I'll show you a few cool sounds you can get from Marshall JMP MK1.
The amp is called a Super Bass.
It's a slightly modified Super Lead design introduced to meet bass guitar requirements.
This one was made in 1974 and it's powered by 4 EL34 tubes and 3 _ 12AX7 preamp tubes.
Like almost all vintage heads, the Marshall also features two channels.
But there's a tricky part.
The normal channel has such amount of lows that you need to turn the bass control almost all the way down and
boost mids around 2 o'clock to get it flat.
The second channel has even more bass and wide treble cut.
To get some crunch and punch you have to turn the bass knob to 0,
otherwise it will clog up immediately.
There's completely different tone when the amp overdrives by low frequencies and high frequencies.
That's why this head is pretty much unplayable with instruments with muddy sound like Gibson Thunderbird or EB-3.
Well, unless you love fuzzy clogged sound, which are cool too in some way.
The cab is 2x15 ported design loaded with diagonally mounted Celestion speakers.
It can handle 500 watts and its impedance is 8 ohms.
Its width and height is identical [C] to standard Marshall 4x12.
However, it's much deeper.
The build quality is pretty poor though.
It had to be re-glued and sealed.
I also had to stretch the grill cloth again, cause it was loose and making noises.
First sample is a pretty fast riff in peg style.
The bass is tuned to drop C and as you can hear amp handles low tuning pretty nice.
Here's how we set the EQ and gain.
_ _ _ _ _ _ _ [F] _
_ [C] _ _ _ _ _ _ _
_ _ _ _ _ [F] _ _ [C] _
_ _ _ _ _ _ _ [Eb] _
_ _ _ _ _ _ [C] _ _
_ _ _ _ [F] _ _ [C] _ _
_ _ _ _ _ _ _ _
_ _ [F] _ _ [C] _ _ _ _
_ _ _ _ [Eb] _ _ _ _
_ _ [C] _ _ _ _ Next sample is a clean tone.
The gain is rolled off and we boost highs a little bit as you can see.
_ [Gm] _ _ [C] _ _
[F] _ _ _ _ [C] _ _ _ _
_ _ [Eb] _ [Ab] _ _ [C] _ _ [F] _
_ _ [C] _ _ _ _ _ _
[Eb] _ _ [Ab] _ _ _ _ [Dm] _
Now I rolled tone pad on my bass and let the amp to clog up.
The result is a beautiful fat fuzz.
The gain is cranked and I boosted the bass.
_ [F] _ _ _ _ _ _
_ _ _ [Eb] _ _ [F] _ _ _
[Ab] _ _ [C] _ _ _ [Bb] _ _ _
[F] _ _ _ _ _ _ [C] _ _
_ _ [F] _ _ _ _ _ [C] _
_ _ [Bb] _ _ [Ab] _ [F] _ _ _
_ _ [D] _ Next riff is played pretty much with same setup.
I used the same setting but we reduced the bass to 9 o'clock. _
_ _ _ _ _ _ _ _
_ [G] _ _ _ _ [D] _ _ _
_ _ _ _ _ _ _ [G] _
_ _ [D] _ _ _ _ _ _
_ _ _ _ _ [G] _ _ _
[D] _ _ _ _ _ _ _ _
_ _ [G] _ _ _ _ _ [D] _
_ [N] _ _ _ Now I'll play something in finger style for you with again same setting so you can hear difference between these two techniques.
_ [C] _ _ _ _
_ _ [Eb] _ _ [C] _ _ _ _
_ _ [Eb] _ _ [C] _ _ _ _
_ _ [Eb] _ _ [C] _ _ _ _
_ _ [Eb] _ [F] _ _ _ _ _
[Ab] _ _ [Ebm] _ _ [C] _ _ _ _
_ _ [Eb] _ _ [C] _ _ _ _
_ _ [Eb] _ _ [C] _ _ _ _
_ _ [Eb] _ _ [C] _ _ _ _
_ _ [Eb] _ [F] _ _ _ _ _
[Ab] _ _ [Eb] _ _ [C] And for last sample a bit crunchy tone with pick style again.
Bass is rolled off. _
_ _ [B] _ _ [C] _ _ [Bb] _ _
[C] _ _ [B] _ _ _ [C] _ _ _
[F] _ _ [Eb] _ _ [F] _ _ _ [C] _
_ _ [B] _ _ [C] _ _ _ _
[Eb] _ _ [D] _ _ [B] _ _ [Bb] _ _
[F] _ _ _ _ _ _ _ _
[C] _ _ [B] _ _ [C] _ _ [Bb] _ _
[C] _ _ [B] _ _ _ [C] _ _ _
[F] _ _ [Eb] _ _ [F] _ _ _ [C] _
_ _ [B] _ _ [C] _ _ _ _
[Eb] _ _ [D] _ _ [B] _ _ [Bb] _ _
[F] _ _ _ _ _ _ _ _