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!
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
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
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.
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.
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.
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
Rated 5 out of 5
Chris Tamez –
I love my 4 Platform 3 18s. Can’t wait to upgrade to the platform 5s.
Rated 5 out of 5
shaun hunt –
I currently have 4 of the 18″ platform 3s and they are amazing. They will exceed your expectations in everyway!
Rated 5 out of 5
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
Rated 5 out of 5
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.
Rated 5 out of 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!
Rated 5 out of 5
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.
Chris Tamez –
I love my 4 Platform 3 18s. Can’t wait to upgrade to the platform 5s.
shaun hunt –
I currently have 4 of the 18″ platform 3s and they are amazing. They will exceed your expectations in everyway!
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
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.
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!
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.