18″ Platform 3

(6 customer reviews)

From: $774.99

  •  Performance Level

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The Platform 3 series is a massive subwoofer, designed for massive amounts of output! The standard version of the Platform 3 is geared towards very loud, but still very musical systems. It is designed to deliver everything from low octave, window flexing bass to throat tickling upper range bass frequencies. These subs deliver very good sound at very high SPL levels!

Power Handling Ratings:
Standard RMS Power Handling – 2500 watts
W/ Optional Hi Performance Addition- 3000 watts
Peak Power Handling – 6000 watts
SPL Burp Power – 8000

Standard version features include:
Massive dual stacked 9″ x 1″ magnets
Chrome top and bottom plates
FEA optimized motor assembly
8 spoke aluminum cast frame – Black
Chrome push terminals or 8ga XP-Flex CCA Direct Connect Wiring
Extended length 83mm aluminum flatwound voice coil
Dual 1 and Dual 2 ohm standard impedance
Triple 8″ progressive roll poly-cotton spiders
Dual sewn 3mm heavy duty leadwire
Kevlar impregnated pulp cone body
1.5″ wide roll rubberized foam surround

 They are manufactured to the strictest standard, and guaranteed to last.
Hand built in the USA!
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high-performance

Our subwoofers are available in two different  performance configurations, Standard and High Performance. The High Performance option will modify the parts used to build the subwoofer to increase the overall power handling and output capability.

The following upgrades would be  applied to the subwoofer if the High Performance option is selected:
Power handling increase from 2500 Watts to 3000 Watts RMS
Quad stiff spider suspension
Triple stitched heavy gauge leadwires

 

 T/S Parameters for Platform 3 18″:
Rec = 3.90 ohms
Fs = 27.47 Hz
Zmax = 68.34
Qes = 0.32
Qms = 5.01
Qts = 0.30
Le = 4.77 mH
Sd = 1230 cm^2
Vas = 8.16 ft^3 / 231.17 L
BL = 26.01
Mms = 305.70 g
Cms = 109.81
Sensitivity = 93.5 dB @1W/1m
Sensitivity = 96.5 dB @2.83Vrms/1m
Xmax = 60mm total
Usable excursion = 3.5″ total

Enclosure Recommendations:
Sealed – 1.5-3.5 ft^3
Ported – 4.5-6.5 ft^3, tuned from 30-36hz

This product may also be used in Bandpass applications. Please contact us before purchasing this product for these installations to make sure that the standard parts will be compatible with your enclosure.

If you would like to customize this series of subwoofer with performance or cosmetic options that are not available in our online store, please submit a
Custom Subwoofer Request.

 

Physical Specifications for Platform 3 18″:
Rated Diameter 18″ / 460 mm
Overall Diameter 18.5″ / 470 mm
Bolt Hole Circle 17.375″” / 441mm
Cutout Diameter 16.75″ / 425mm
Mounting Depth 9.75″ / 228 mm
Magnet Diameter 8.7″ / 220 mm
Driver Displacement 0.25 ft.³ / 7.07 L
Shipping Weight 66 lb / 29.93 kg

dimensions

Polypropylene Dome (Small)

Carbon Fiber Dome (Small)

Full Cone Cover (Small)

We offer connections to the subwoofer either via spring loaded terminals or direct connect wiring.

Push Terminals are chrome plated, and are marked with a red and black colors to designate the positive and negative terminals. They offer the simplest installation and provide a nice secure connection.

Standard Push Terminals are made to accept a single 8ga wire and use a tab soldered directly to the push pin, to which the leadwires from the voice coil are soldered.
standard-terminal

LARGE Push Terminals are made to accept a single 4ga or dual 8ga wires and use a heavy duty, extra-thick tab bolted to the push pin, to which the leadwires from the voice coil are soldered. large-terminals

Direct Connect wiring offers the very best connection directly from your amplifiers output wiring to the voice coil of your subwoofer. Our direct connect wiring is securely attached to our interwoven braided lead wire via high temperature solder, then covered with heavy duty heat shrink. You can make your connection to the wiring via the twist and tape method, large wire nuts, crimp connectors, or solder.

direct-connect

XS-Flex is the best of the best! A 100% Pure Oxygen Free Tinned Copper wire, with 735 Strand Count and Soft Touch PVC Casing. XS Flex Cable is True AWG cable. The high strand count and soft touch cable jacket allows the wire to be super flexible and easy to use in any installation. XS-Flex is available in BLUE and CLEAR.

XP Flex Cable is also a True AWG cable. It is made up of 10% Oxygen Free Copper(OFC) 90% Copper Clad Aluminum(CCA), with  735 Strand Count and Soft Touch PVC Casing. XP-Flex is available in BLUE, RED and BLACK.

PSI Flex Cable is made to the same exact standards as XP Flex, but is available in PINK only.

6 reviews for 18″ Platform 3

  1. Chris Tamez

    I love my 4 Platform 3 18s. Can’t wait to upgrade to the platform 5s.

  2. shaun hunt

    I currently have 4 of the 18″ platform 3s and they are amazing. They will exceed your expectations in everyway!

  3. Keith Stinnett

    Lets just start by saying that these are some of the best subwoofers on the planet. I had 4 platform 3 18s in a 2 door blazer on 4 twisted sounds 3.5ks at .5 ohm each and it was my favorite and most violent setup I’ve had. Hands down you won’t find a better company willing to help you out and provide you with service like PSI does. So if you’re on edge about what sub to order just stop right here and look no further than the platform 3

  4. Rob Finch

    I have 4 18″ platform 3 high powered subs and I love them! Even with low power on them, the low notes and the high notes are very impressive. No need to look any further unless you want to get the platform 5’s. Your neighbors will love them just as much as you do.

  5. Clint Stull (verified owner)

    These thing is a beast I bought 1 of these and there 2500 star power amp it’s so f**king loud the whole street hates me! Lol had to buy crescendo ft1s and crescendo 8in neo’s just to hear music with the bass! If ur thinking about getting one just keep in mind ur going to need a kickass mid’s and hi’s to compete with this monster!

  6. JOSHUA BAKER

    Love this sub. It’s an absolute beast. I have 1 mounted in an single ported box and am hitting 149.6 dbs. It looks incredible and words can’t describe the clarity of the sound. Buy one and hear it yourself. I need to get one to put in my other car to represent.

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