Great Lakes Sound & Vibration Inc.

Great Lakes Sound & Vibration Inc. Main Office Division, doing business as Glsv, is an SBA-certified HUBZone small business headquartered in Houghton, Michigan, that manufactures vehicle components, exhaust systems, engine accessories, and specialized defense equipment as a prime contractor (76% of recent awards) and as a subcontractor to major defense primes. The company is a Subchapter S Corporation and for-profit manufacturer competing predominantly under HUBZone and small business set-asides across its prime footprint, with a subset of work flowing through full-and-open DLA and Department of Navy competitive solicitations.

Glsv's capability portfolio centers on noise and vibration engineering, structural design, prototype development, and manufacturing of military vehicle components. Representative prime work includes a $7.76 million Other Transaction Agreement with Naval Air Systems Command for E-6 APU Exhaust Box Re-design (July 2025), a $5.35 million Cost Plus Fixed Fee definitive contract with the Air Force for aeroacoustic reproduction system development (January 2024), a $2.88 million Other Transaction Agreement with the Office of the Secretary of Defense for Tactical Range Extender enhancement (February 2024), and a $2.08 million definitive contract with DLA for power supply units (June 2025). Smaller volume work under DLA Land and Maritime comprises purchase orders and delivery orders for exhaust pipes, shock absorbers, mufflers, fan shrouds, manhole covers, fuel tanks, and related engine accessories, typically in the $7,000 to $520,000 range per order. Research and development work includes a $1.7 million SBIR Phase II contract with the Army for active noise control in small caliber ammunition (October 2021) and a $1.5 million SBIR Phase II contract with the Marine Corps, extended to October 2025. Recent awards include a $441,880 definitive contract with DLA Warren for fuel tank components (December 2025) and multiple smaller single-award indefinite delivery contracts held with DLA Land and Maritime, each capped at $250,000 to $350,000.

Glsv's customer concentration is heavily skewed toward defense logistics and Navy platforms. The top five funding agencies account for 85% of awards by count but diverge sharply on dollar concentration. DLA Land and Maritime dominates by volume—138 awards carrying $12.6 million combined potential value—reflecting recurring purchase orders and delivery orders for standard vehicle components. The Department of the Navy Naval Sea Systems Command, by contrast, anchors 99.2% of combined potential value through just 19 awards, principally a $3.97 billion sub-award footprint on shock testing and systems work for FFG(X) guided missile frigate construction through Marinette Marine Corporation. The United States Marine Corps accounts for 43 awards worth $2.1 million. The Army's TACOM Life Cycle Management Command holds 11 awards worth $8.4 million, including the centrifugal fan and fuel tank contracts. The Air Force and Naval Air Systems Command each carry single large R&D awards in the $5 to $7.8 million range. This dollar concentration in Navy platform work through shipyard primes (Marinette Marine, Huntington Ingalls, General Dynamics Land Systems) signals Glsv's role as a shock-testing and component-engineering sub serving advanced warship construction, distinct from its primary DLA business in logistics-driven component supply.

Glsv holds a portfolio of single-award indefinite delivery contracts with DLA Land and Maritime, each typically valued at $250,000 to $350,000, covering exhaust pipes, exhaust mufflers, shock absorbers, radiator fan shrouds, manhole covers, power supply adapters, and other engine accessories (PSC 29 and NAICS 336390). Recent IDVs awarded include contracts for exhaust pipes (NSN 2990012928603) at $350,000 ceiling (April 2026), radiator fan shrouds at $250,000 (December 2024), exhaust mufflers at $250,000 and $250,000 (August 2025 and July 2025), and shock absorbers at $443,080 and $520,344 (August 2023 and April 2024). A Basic Ordering Agreement with the Army's Combined Arms Center at Fort Warren for Class IX supplies runs through April 2031 with no preset ceiling. These vehicles anchor Glsv's recurring small-order DLA workload but carry modest individual ceilings relative to the company's prime R&D and large Navy sub footprint.

Activity has grown from 25 awards in 2022 to a peak of 47 in 2024, declining to 44 in 2025 and 12 through April 2026, signaling potential recompete and pipeline risk. Sixteen awards (combined potential value $12.8 million) reach ultimate completion within the next twenty-four months, concentrated in DLA single-award IDV cycles and Marine Corps SBIR Phase II extension. In its subcontractor role, Glsv supplies shock-testing engineering, plenum finalization work, and powertrain components to General Dynamics Land Systems on Optionally Manned Fighting Vehicle phase 3/4 development (multiple awards 2024-2025), shock testing to Marinette Marine on FFG(X) construction (multiple 2024-2025), powertrain support to Oshkosh Defense on JLTV fielding and international field service requests (dozens of 2023-2024 modifications and extensions), and component work to Honeywell on Tiger III service integration and Huntington Ingalls on DDG-51 construction (2024). The sub work is episodic but volumetrically significant, reflecting Glsv's specialized expertise in vibration testing and vehicle powertrain engineering demanded by large-scale military platform manufacturers.

Glsv's top NAICS categories are Military Armored Vehicle, Tank, and Tank Component Manufacturing (53 awards), Other Motor Vehicle Parts Manufacturing (46 awards), and Other Engine Equipment Manufacturing (40 awards), with secondary strength in Motor Vehicle Body Manufacturing (22 awards) and R&D in physical and engineering sciences (18 awards). This classification distribution mirrors its dual footprint: high-volume commodity component supply to logistics (DLA) and specialized engineering and vibration-characterization work on defense platform development (Navy, Army, Oshkosh, General Dynamics).

Great Lakes Sound & Vibration Inc offers engineering consulting specializing in noise, vibration, and shock reduction. We offer innovative problem solving, concept development, fabrication, and manufacturing services for industrial and defense clientele.