Simplex SH-1000 - Revision history

JesseCrooks at 23:38, 23 April 2022

2022-04-23T23:38:08Z

← Older revision		Revision as of 16:38, 23 April 2022
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	[[File:Simplex E-7 & SH-1000.png\|right\|300px]]		[[File:Simplex E-7 & SH-1000.png\|right\|300px]]

	The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the X-L series soundheads, which are very similar to the SH-1000 but have a compartment below the exciter lamp to house a preamp. The SH-1000 remained popular long after the introduction of Simplex's belt-driven soundheads, which are generally considered inferior to the earlier direct drive models.		The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the [[Simplex E-7\|E-7]] line of projectors in the 1930s. It was replaced by the X-L series soundheads, which are very similar to the SH-1000 but have a compartment below the exciter lamp to house a preamp. The SH-1000 remained popular long after the introduction of Simplex's belt-driven soundheads, which are generally considered inferior to the earlier direct drive models.

	==Threading==		==Threading==

JesseCrooks at 23:28, 23 April 2022

2022-04-23T23:28:50Z

← Older revision		Revision as of 16:28, 23 April 2022
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			[[File:Simplex E-7 & SH-1000.png\|right\|300px]]

	The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the X-L series soundheads, which are very similar to the SH-1000 but have a compartment below the exciter lamp to house a preamp. The SH-1000 remained popular long after the introduction of Simplex's belt-driven soundheads, which are generally considered inferior to the earlier direct drive models.		The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the X-L series soundheads, which are very similar to the SH-1000 but have a compartment below the exciter lamp to house a preamp. The SH-1000 remained popular long after the introduction of Simplex's belt-driven soundheads, which are generally considered inferior to the earlier direct drive models.

JesseCrooks: /* Threading */

2022-04-23T17:16:34Z

Threading

← Older revision		Revision as of 10:16, 23 April 2022
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	When threading the SH-1000 pull the film taught around the sound drum, then back it off from the upper soundhead sprocket by two perforations. There should be eight perforations of slack between the upper and lower soundhead sprockets.		When threading the SH-1000 pull the film taught around the sound drum, then back it off from the upper soundhead sprocket by two perforations. There should be eight perforations of slack between the upper and lower soundhead sprockets.

			[[File:Simplex SH-1000 Threading Diagram.png\|center\|700px]]

	==Lubrication==		==Lubrication==

JesseCrooks: /* Known Issues */

2022-04-23T16:35:29Z

Known Issues

← Older revision		Revision as of 09:35, 23 April 2022
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	==Known Issues==		==Known Issues==

	To help prevent oil from leaking out of the soundhead, an absorbent material can be placed inside the casting below the gearbox on the non-operator side, and changed as soon as it becomes saturated.		To help prevent oil from leaking out of the soundhead, an absorbent material can be placed inside the casting below the gearbox on the non-operator side, and changed as soon as it becomes saturated. If the leaking becomes excessive, it may be necessary to replace the gaskets.

	As with all Simplex and RCA soundheads, one source of potential film damage is the rubber roller (Simplex part G-1985) on the lateral guide roller, which makes contact with the picture area. This roller can accumulate dirt, and can develop a flat spot if left closed when not in use. '''Always leave the lateral guide roller open when not in use.''' When worn or dirty, it can leave a wear pattern on the surface of the film. One workaround in the platter era was to remove this rubber roller and replace it with a spacer. This is an option for platter or large-reel playback, but is not an option for reel-to-reel projection because it takes too long to get the sound drum up to speed with this modification.		As with all Simplex and RCA soundheads, one source of potential film damage is the rubber roller (Simplex part G-1985) on the lateral guide roller, which makes contact with the picture area. This roller can accumulate dirt, and can develop a flat spot if left closed when not in use. '''Always leave the lateral guide roller open when not in use.''' When worn or dirty, it can leave a wear pattern on the surface of the film. One workaround in the platter era was to remove this rubber roller and replace it with a spacer. This is an option for platter or large-reel playback, but is not an option for reel-to-reel projection because it takes too long to get the sound drum up to speed with this modification.

JesseCrooks at 16:33, 23 April 2022

2022-04-23T16:33:31Z

← Older revision		Revision as of 09:33, 23 April 2022
Line 14:		Line 14:

	As with all Simplex and RCA soundheads, one source of potential film damage is the rubber roller (Simplex part G-1985) on the lateral guide roller, which makes contact with the picture area. This roller can accumulate dirt, and can develop a flat spot if left closed when not in use. '''Always leave the lateral guide roller open when not in use.''' When worn or dirty, it can leave a wear pattern on the surface of the film. One workaround in the platter era was to remove this rubber roller and replace it with a spacer. This is an option for platter or large-reel playback, but is not an option for reel-to-reel projection because it takes too long to get the sound drum up to speed with this modification.		As with all Simplex and RCA soundheads, one source of potential film damage is the rubber roller (Simplex part G-1985) on the lateral guide roller, which makes contact with the picture area. This roller can accumulate dirt, and can develop a flat spot if left closed when not in use. '''Always leave the lateral guide roller open when not in use.''' When worn or dirty, it can leave a wear pattern on the surface of the film. One workaround in the platter era was to remove this rubber roller and replace it with a spacer. This is an option for platter or large-reel playback, but is not an option for reel-to-reel projection because it takes too long to get the sound drum up to speed with this modification.

			==Resources==
			*[[Media:Simplex SH-1000 Instruction Manual (1941).pdf\|Simplex SH-1000 Instruction Manual (1941)]]
			*[[Media:Simplex SH-1000 Parts List (1943).pdf\|Simplex SH-1000 Parts List (1943)]]

	[[Category:Soundheads]]		[[Category:Soundheads]]
	[[Category:35mm_projectors]]		[[Category:35mm_projectors]]
	[[Category:Equipment]]		[[Category:Equipment]]

JesseCrooks at 15:33, 23 April 2022

2022-04-23T15:33:40Z

← Older revision		Revision as of 08:33, 23 April 2022
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	The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the X-L series soundheads, which are very similar to the SH-1000 but have a compartment below the exciter lamp to house a preamp. The SH-1000 remained popular long after the introduction of Simplex's belt-driven soundheads, which are generally considered inferior to the ~~later~~ direct drive models.		The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the X-L series soundheads, which are very similar to the SH-1000 but have a compartment below the exciter lamp to house a preamp. The SH-1000 remained popular long after the introduction of Simplex's belt-driven soundheads, which are generally considered inferior to the earlier direct drive models.

	==Threading==		==Threading==

JesseCrooks at 03:20, 23 April 2022

2022-04-23T03:20:51Z

← Older revision		Revision as of 20:20, 22 April 2022
Line 1:		Line 1:
	The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the X-L series soundheads, which are very similar to the SH-1000 but have a compartment below the exciter lamp to house a preamp. The SH-1000 remained popular long after the introduction of Simplex's belt-driven soundheads, which are generally considered inferior to the direct drive models.		The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the X-L series soundheads, which are very similar to the SH-1000 but have a compartment below the exciter lamp to house a preamp. The SH-1000 remained popular long after the introduction of Simplex's belt-driven soundheads, which are generally considered inferior to the later direct drive models.

	As with all Simplex and RCA soundheads, one source of potential film damage is the rubber roller (Simplex part G-1985) on the lateral guide roller, which makes contact with the picture area. This roller can accumulate dirt, and can develop a flat spot if left closed when not in use. When worn or dirty, it can leave a wear pattern on the surface of the film. One workaround in the platter era was to remove this rubber roller and replace it with a spacer. This is an option for platter or large-reel playback, but is not an option for reel-to-reel projection because it takes too long to get the sound drum up to speed with this modification.		==Threading==

			When threading the SH-1000 pull the film taught around the sound drum, then back it off from the upper soundhead sprocket by two perforations. There should be eight perforations of slack between the upper and lower soundhead sprockets.

			==Lubrication==

			The SH-1000 has a gearbox that runs in an oil bath. The gearbox tends to leak, so it is important to regularly check and refill the oil. Note that the soundhead requires a heavier oil than the projector head. It was designed to take a conventional SAE 40 non-detergent oil, but an appropriate synthetic oil can also be employed. The oil level should be checked when the projector is idle so that the oil can settle. A few drops of oil should also be applied to the gears outside of the gearbox on a regular basis.

			==Known Issues==

			To help prevent oil from leaking out of the soundhead, an absorbent material can be placed inside the casting below the gearbox on the non-operator side, and changed as soon as it becomes saturated.

			As with all Simplex and RCA soundheads, one source of potential film damage is the rubber roller (Simplex part G-1985) on the lateral guide roller, which makes contact with the picture area. This roller can accumulate dirt, and can develop a flat spot if left closed when not in use. '''Always leave the lateral guide roller open when not in use.''' When worn or dirty, it can leave a wear pattern on the surface of the film. One workaround in the platter era was to remove this rubber roller and replace it with a spacer. This is an option for platter or large-reel playback, but is not an option for reel-to-reel projection because it takes too long to get the sound drum up to speed with this modification.

	[[Category:Soundheads]]		[[Category:Soundheads]]
	[[Category:35mm_projectors]]		[[Category:35mm_projectors]]
	[[Category:Equipment]]		[[Category:Equipment]]

JesseCrooks at 01:56, 23 April 2022

2022-04-23T01:56:34Z

← Older revision		Revision as of 18:56, 22 April 2022
Line 1:		Line 1:
	The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the X-L series soundheads, which ~~were~~ very similar to the SH-1000 but have a compartment below the exciter lamp to house a preamp. The SH-1000 remained popular long after the introduction of Simplex's belt-driven soundheads, which are generally considered inferior to the direct drive models.		The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the X-L series soundheads, which are very similar to the SH-1000 but have a compartment below the exciter lamp to house a preamp. The SH-1000 remained popular long after the introduction of Simplex's belt-driven soundheads, which are generally considered inferior to the direct drive models.

	As with all Simplex and RCA soundheads, one source of potential film damage is the rubber roller (Simplex part G-1985) on the lateral guide roller, which makes contact with the picture area. This roller can accumulate dirt, and can develop a flat spot if left closed when not in use. When worn or dirty, it can leave a wear pattern on the surface of the film. One workaround in the platter era was to remove this rubber roller and replace it with a spacer. This is an option for platter or large-reel playback, but is not an option for reel-to-reel projection because it takes too long to get the sound drum up to speed with this modification.		As with all Simplex and RCA soundheads, one source of potential film damage is the rubber roller (Simplex part G-1985) on the lateral guide roller, which makes contact with the picture area. This roller can accumulate dirt, and can develop a flat spot if left closed when not in use. When worn or dirty, it can leave a wear pattern on the surface of the film. One workaround in the platter era was to remove this rubber roller and replace it with a spacer. This is an option for platter or large-reel playback, but is not an option for reel-to-reel projection because it takes too long to get the sound drum up to speed with this modification.

JesseCrooks: Created page with "The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the..."

2022-03-18T01:34:11Z

Created page with "The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the..."

New page

The Simplex SH-1000, also called the Simplex Four Star, is a direct drive soundhead originally introduced with the E-7 line of projectors in the 1930s. It was replaced by the X-L series soundheads, which were very similar to the SH-1000 but have a compartment below the exciter lamp to house a preamp. The SH-1000 remained popular long after the introduction of Simplex's belt-driven soundheads, which are generally considered inferior to the direct drive models.

As with all Simplex and RCA soundheads, one source of potential film damage is the rubber roller (Simplex part G-1985) on the lateral guide roller, which makes contact with the picture area. This roller can accumulate dirt, and can develop a flat spot if left closed when not in use. When worn or dirty, it can leave a wear pattern on the surface of the film. One workaround in the platter era was to remove this rubber roller and replace it with a spacer. This is an option for platter or large-reel playback, but is not an option for reel-to-reel projection because it takes too long to get the sound drum up to speed with this modification.

[[Category:Soundheads]]
[[Category:35mm_projectors]]
[[Category:Equipment]]