Industrial Construction

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20' x  60'  Warehouse Industrial Bridge Crane Overhead Gantry 10,000lb Capacity

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Duro Steel 75x150x18 Metal Building Factory Industrial Clear Span Storage Shed

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Duro BEAM Steel 75x150x14 Metal Building Factory DiRECT Industrial Clear Span

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Duro Steel 50x100x25 Metal Building Factory Kit 2-Story Industrial Storage Shed

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Duro BEAM Steel 60x125x16 Metal Building Factory DiRECT Industrial Workshop

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21' x 60' Warehouse Industrial Bridge Crane Free Standing Overhead Gantry Cranes

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21' x 40' Warehouse Industrial Bridge Crane Free Standing Overhead Gantry Cranes

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21' x 30' Warehouse Industrial Bridge Crane Free Standing Overhead Gantry Cranes

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Duro Steel 40x100x20 Metal Building DIY Industrial Warehouse Machinery Structure

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Duro Steel 50x100x12 Metal Building Industrial Commercial Workshop Storage Shed

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Duro BEAM Steel 60x60x20 Metal Building Factory DiRECT Prefab Industrial Shop

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21' x 20' Warehouse Industrial Bridge Crane Free Standing Overhead Gantry Cranes

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Duro Steel 50x80x12 Metal Building Factory Kit 4 Bay Industrial Garage Workshop

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FEIN GRIT GI150 2H 2V + GIR 6” INDUSTRIAL PIPE NOTCHER & BELT GRINDER - NEW

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Industrial Used Pug Mill Industrial blender 60 hp 3 phase working cond

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Masterbend Systems Industrial Hydraulic Tube and Pipe Bender

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Industrial Forklift, 3k lb Toyota LPG, Pneumatic Tires

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HUMMER H1 WARN 64402 Industrial Winch Kit 12 DC

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HUMMER H1 WARN 68435 Industrial Winch 12 DC 12000#

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18'5

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Steel industrial stairs

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96

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12000 Pound lb 24V DC WARN Winch 30290 Industrial 12 DC

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NEW 25HP D1105 Kubota Industrial Diesel Engines, In-Line 3 cylinder, 1.1 liter

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WARN 30283 Industrial Winch Series 9 DC 9000#

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New 76

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100 Custom Embroidery * FREE LOGO INDUSTRIAL Construction Pocket Polo Shirt NEW

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Industrial Mercury Glass Shade Mirrored Reflector Lights Set of 8  #402-12

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Carton cutter Box cutter Industrial Size Cutter conveyer rolls Working Condition

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TITAN TG 7500D INDUSTRIAL GENERATOR NEW

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GALAXY SUPER SIDEWALL INDUSTRIAL TIRES 4 WHEELS & TIRES STOP BUY & TAKE A LOOK!!

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WARN 30282 Industrial Winch Series 9 Hydraulic 9000#

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Duro Steel Arch Building 50' Metal Hand Welded Industrial Base Connector Plate

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Northern Industrial 4in. Electric Pipe Threader

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Heavy Duty Steel Industrial Stairs

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75 Custom Embroidery * FREE LOGO INDUSTRIAL Construction Pocket Polo Shirt NEW

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Industrial Bin Vibrator or Hopper Vibrator

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Industrial Scientific PL-50 Air Filter/ CO Monitor for Underwater Gold Dredge

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Industrial 3/4

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Industrial 3/4

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Industrial 3/4

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14.00 R24 Michelin Tires  BRAND NEW Grader, Loader, Industrial, Logging

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Grindex Minex 120 volt Industrial Pump NEW! 7800 GPH!

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Industrial 120L Cement Concrete Mortar Mixer 120 Liter

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NEW STARTER ISUZU 6RB1 6RB1T 12PB1 INDUSTRIAL ENGINES EX 400 JCB 71425700

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JET 4-in Heavy-Duty Industrial Horizontal Air Grinder 526207 NEW

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Prostar 2.5 Horsepower Industrial Tile / Brick Saw  HF-95385

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50 Custom Embroidery * FREE LOGO INDUSTRIAL Construction Pocket Polo Shirt NEW

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JohnsonLevelandTool Green Industrial Alignment Cross-Line Laser Level 110V AC

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Liftmaster H5011 HD Commercial  Industrial Hoist Garage Door Opener

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JOHN DEERE INDUSTRIAL CONSTRUCTION SKIDDER TURBO CHARGER

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Grove MZ66B/Sweepster/etc NISSAN Industrial Engine Gas/Propane

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STIHL TS 420 INDUSTRIAL CUTQUIK CONCRETE STEEL CUT OFF SAW 14'' BRAND NEW !!!

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Titan Industrial Air Compressor Tac-2T 5.5 HP 8 Gallon - Brand New - Never Used

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***BRAND NEW*** HUSQVARNA K 760 INDUSTRIAL CONCRETE CUT OFF SAW 14

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STARTER HITACHI EXCAVATOR EX300 EX300 LC-3 EX330 ISUZU INDUSTRIAL 6SD1TP ENGINE

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NEW STARTER ISUZU EXCAVATOR INDUSTRIAL 6SD1TP ENGINE 181100-288-0 181100-294-0

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STARTER ISUZU INDUSTRIAL 6SD1TP 181100-294-1 5811002941 02-23-3002 0-23000-7290

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SMACNA Round Industrial Duct Construction Standards Set

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Rectangular Industrial Duct Construction Standards -Set

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Industrial Transfer Pump - 5.5 HP

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3408 67U INDUSTRIAL COMPLETE ENGINE GASKET KIT AMERICAN MADE

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36 Custom Embroidery * FREE LOGO INDUSTRIAL Construction Pocket Polo Shirt NEW

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Armour 19.5L- 24 Backhoe, Industrial Tire, R4, 12 Ply

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CASE INDUSTRIAL CONSTRUCTION W14 780 850B TURBO

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JohnsonLevelandTool Green Industrial Alignment Dot Laser 110V AC  40-6224

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High bay tunnel light fixture LED 220 watt Industrial, tunnel, garage, NEW!

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STARTER MOTOR INDUSTRIAL ENGINE KHD DEUTZ 0-001-362-701

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Siemens Industrial Circuit Breaker 250A/3-P FXD63B250 NIB

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NEW KING CHO Industrial Pneumatic Hog Ring Tool, 1/2

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CASE INTERNATIONAL TRACTORS INDUSTRIAL 2404 2424 330 444  Hydraulic PUMP (9 GPM)

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FORD INDUSTRIAL CONSTRUCTION  555 STEERING PUMP

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Industrial+Construction
Freq. & Hz. 4 My Woofers!?

I Have A Ported Box That Holds 3 12” Subwoofers. Itz For My 2 12” 600 Watt Kenwood Tornados & My 12” 1200 Watt 500 Rms Power Acoustik Subwoofer.Tell Me What Do I Tune The Box 2 For My Kenwoods & My Power Acoustik Subs So I Dont Have A Cancelation & For Best Proformance Until I Get Matching Subs.

Ported Box Description:
BASS12-3H-VENTED
BOX MEASUREMENTS
LENGTH 43 INCHES
WIDTH 16 1/4 INCHES
HEIGHT 16 1/4 INCHES
ENCLOSURE HAS 1.4 CUBIC FEET
OF AIR SPACE PER CHAMBER.
PORT IS 39″ LONG WITH 78 CU.IN. OF AREA.
5/8 MDF INDUSTRIAL CONSTRUCTION.
CHARCOAL GRAY INDUSTRIAL GRADE CARPET.
THREE SPRING LOADED SPEAKER TERMINALS

well first it is not a good idea to mismatch unless the enclosure requirements are the same. Second the one sub will have a different sound and may even meant for a sealed enclosure only. But to answer the question 35 to 40 hz.