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DiMarzio Gravity Storm vs Seymour Duncan Alternative 8 (SH-15)

Compared with the DiMarzio Gravity Storm, the Seymour Duncan Alternative 8 (SH-15) has an Alnico VIII magnet (punchier, more aggressive) and a brighter top end.

Specs side by side

differs marks specs where they part ways
SpecDiMarzio Gravity StormSeymour Duncan Alternative 8 (SH-15)
DC resistancediffers15.19k17.68k
Inductancediffers8.25 H (measured, 1 reading)8.18 H (measured, 1 reading)
MagnetdiffersAlnico 5Alnico 8
CoilHum-cancellingHum-cancelling
Resonant peakdiffers—4.46 kHz (Seymour Duncan's own test load)
Bass (tone chart)differsEach maker grades its own chart, so read these within a brand8 / 107 / 10
Mids (tone chart)differsEach maker grades its own chart, so read these within a brand8.5 / 108 / 10
Treble (tone chart)differsEach maker grades its own chart, so read these within a brand3 / 109 / 10
Slotbridge humbuckerbridge humbucker
Traitshigh output, dark, mid-forward, big low endhigh output, bright, mid-forward, big low end, tight & aggressive

How close on each spec

100 means identical on that spec. The score weighs these, and counts anything we couldn't compare as a typical difference. How scoring works

Output
99
measured inductance
Magnet
70
Alnico 5 vs Alnico 8
Coil
100
same coil type
Brightness
0
each against its maker's average
Mids
82
each against its maker's average
Bass
94
each against its maker's average

Videos

DiMarzio Gravity Storm

Seymour Duncan Alternative 8 (SH-15)

Alternative 8 Humbucker: Metal Demo
Seymour Duncan
Alternative 8 High-Output Pickup
Seymour Duncan

What players and reviewers say

On the DiMarzio Gravity Storm

“If you are looking for high mid crunch forget the Gravity Storm, I have that set in one of my guitars and it is a lot of lows and low mids with a rolled back high end.”
jimlp · 2013-12-10Seymour Duncan forum ↗ (opens in a new tab)
“However, to say the gravity storm will have scooped mids because it has an A5 is a stretch, as the Tone Zone example proves.”
iamthesuck · 2015-06-25Seymour Duncan forum ↗ (opens in a new tab)
Everything on the DiMarzio Gravity Storm →

On the Seymour Duncan Alternative 8 (SH-15)

“In the tone chart I´ve seen the TB15 Alternative 8 wich is Alnico (tone) and seems to have the same highs that the JB has but It has more mids and lows too..”
danidogma · 2016-01-07Seymour Duncan forum ↗ (opens in a new tab)
“So I got an Alternative 8 in My SG and I am finding it to be a bit aggressive on the high end and upper mids..”
Bo-Hawk · 2017-07-24Seymour Duncan forum ↗ (opens in a new tab)
Everything on the Seymour Duncan Alternative 8 (SH-15) →

Full reviews