Post by antigua on Oct 30, 2017 22:19:12 GMT -5
The SH-1 is one of, if not the first, PAF based product offered by Seymour Duncan in the 70's. It's marketed as a faithful replica, though even to this day they're fast and loose with some of the details, giving rise to their Seth Lover model, an even more authentic than their already authentic PAF replica, wherein no corners are cut. This model has been around for such a long time that it's been used as the basis for some import knock offs.
The tone-meme on the Internet is that the "SH-1" set has a "scooped" tone, which, based on technical analysis, probably correlates with the 3.0kHz loaded peak in conjunction with a relatively strong AlNiCo 5 bar, that goes against the contemporary trend of using AlNiCo 2 or 3 for PAF replicas.
Stratotarts previously measured another Seymour Duncan '59 neck , so we have a couple points of comparison. Beside the measurements below I've included Stratotart's measurements. While they didn't measure identical, especially with the DC resistance, which is not an especially important metric, the loaded loaded and unloaded resonant peaks, as well as the inductance, were very close, showing that these pickups are functionally identical.
One thing that is apparent based on my sample, as seen in the pics below, and the sample seen in Stratotart's thread, and was seen in another '59 neck pickup I no longer have in my possession, is that there is not a fixed set of appointments. It's probably that there are minor changes from one production run to the next. Stratotart's tested '59 is seen to have a maple spaced, paper taped coils, 2 conductor cable and long legs, which are all "authentic" specs. The one I've tested here has long legs also, but a plastic spacer, 4C hookup cable, and polyester coil tape, and the '59 I no longer have in my possession was much like this one, but had short legs and paper taped coils. The wire used appears to be plain enamel, and the bobbins may or may not be butyrate.
Seymour Duncan '59 neck SH-1N 0053 IDB27
DC Resistance:
- series: 7.81k ohms (7.39k)
- parallel: 1.95k ohms
= screw: 3.97k ohms (red & green)
- slug: 3.84k ohms (white & black)
Inductance:
- series: 4.302H (4.44H)
- parallel: 1.075H
= screw: 1.758H
- slug: 1.934H
Calculated C:
- series: 98pF (128pF)
- parallel: 181pF
Resonant Peak:
- series: dV: 7.7dB f: 7.37kHz black (6.4dB, 7.39kHz)
- parallel: dV: 7.9dB f: 11.1kHz red
- screw: dV: 9.3dB f: 11.9kHz green
- slug: dV: 9.6dB f: 10.5kHz gray
Loaded Peaks (200k ohms & 470pF):
- series: dV: 3.1dB f: 3.03kHz black (2.4dB, 2.980kHz)
- parallel: dV: 5.5dB f: 6.14kHz red
- screw: dV: 4.2dB f: 5.24kHz green
- slug: dV: 5.4dB f: 4.62kHz gray
Gauss at screw / slug tops at center: 300G/350G (380/450)
Mfg URL: www.seymourduncan.com/pickup/vintage-blues-set
Pics:
The tone-meme on the Internet is that the "SH-1" set has a "scooped" tone, which, based on technical analysis, probably correlates with the 3.0kHz loaded peak in conjunction with a relatively strong AlNiCo 5 bar, that goes against the contemporary trend of using AlNiCo 2 or 3 for PAF replicas.
Stratotarts previously measured another Seymour Duncan '59 neck , so we have a couple points of comparison. Beside the measurements below I've included Stratotart's measurements. While they didn't measure identical, especially with the DC resistance, which is not an especially important metric, the loaded loaded and unloaded resonant peaks, as well as the inductance, were very close, showing that these pickups are functionally identical.
One thing that is apparent based on my sample, as seen in the pics below, and the sample seen in Stratotart's thread, and was seen in another '59 neck pickup I no longer have in my possession, is that there is not a fixed set of appointments. It's probably that there are minor changes from one production run to the next. Stratotart's tested '59 is seen to have a maple spaced, paper taped coils, 2 conductor cable and long legs, which are all "authentic" specs. The one I've tested here has long legs also, but a plastic spacer, 4C hookup cable, and polyester coil tape, and the '59 I no longer have in my possession was much like this one, but had short legs and paper taped coils. The wire used appears to be plain enamel, and the bobbins may or may not be butyrate.
Seymour Duncan '59 neck SH-1N 0053 IDB27
DC Resistance:
- series: 7.81k ohms (7.39k)
- parallel: 1.95k ohms
= screw: 3.97k ohms (red & green)
- slug: 3.84k ohms (white & black)
Inductance:
- series: 4.302H (4.44H)
- parallel: 1.075H
= screw: 1.758H
- slug: 1.934H
Calculated C:
- series: 98pF (128pF)
- parallel: 181pF
Resonant Peak:
- series: dV: 7.7dB f: 7.37kHz black (6.4dB, 7.39kHz)
- parallel: dV: 7.9dB f: 11.1kHz red
- screw: dV: 9.3dB f: 11.9kHz green
- slug: dV: 9.6dB f: 10.5kHz gray
Loaded Peaks (200k ohms & 470pF):
- series: dV: 3.1dB f: 3.03kHz black (2.4dB, 2.980kHz)
- parallel: dV: 5.5dB f: 6.14kHz red
- screw: dV: 4.2dB f: 5.24kHz green
- slug: dV: 5.4dB f: 4.62kHz gray
Gauss at screw / slug tops at center: 300G/350G (380/450)
Mfg URL: www.seymourduncan.com/pickup/vintage-blues-set
Pics: