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 12 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 15″: Revc = 3.90 ohms Fs = 33.35 Hz Zmax = 81.66 Qes = 0.37 Qms = 6.64 Qts = 0.35 Le = 4.80 mH Sd = 830 cm^2 Vas = 3.04 ft^3 / 85.97 L BL = 24.59 Mms = 247.48 g Cms = 92.04 Sensitivity = 91.1 dB @1W/1m Sensitivity = 93.8 dB @2.83Vrms/1m Xmax = 60mm total Usable Excursion = 3″ total
Enclosure Recommendations: Sealed – This model is not recommended for sealed enclosures. Ported – 3.5-5.25 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 15″: Rated Diameter 15″ / 380 mm Overall Diameter 15.5″ / 394 mm Bolt Hole Circle 14.625″ / 371.5 mm Cutout Diameter 14.125″ / 358 mm Mounting Depth 8.75″ / 222 mm Magnet Diameter 8.7″ / 220 mm Driver Displacement 0.24 ft.³ / 6.79 L Shipping Weight 63 lb / 28.5 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.
12 reviews for 15″ Platform 3
Rated 5 out of 5
Daniel lucas –
If you are looking for a very good and reasonable priced subwoofer, look no further. I have 2 of the platform3 15s and very are amazing! Hands down one of the best subs on the market and great costumer service! These subs are beasts!!!
Rated 5 out of 5
Charles rickard –
one of my favorites. I ran 4 of these for a few years in a flat wall and a 6th order on 12-16k. great quality parts. mine were also custom painted. love the options with this company. American made
Rated 5 out of 5
Matt Harris –
Got bass? No? Look no further than this beast. Before I installed mine I was sad, living life one weak bass line at a time. Now I have more bass than I know what to do with, I’m giving bass out to needy children at orphanages. Well, that might be a slight exaggeration but I definitely increased my bottom end by a great deal. Do yourself a solid and pick one up today. You might want to hit the gym first though, these bad boys are heavy.
Rated 5 out of 5
Joseph Smith –
I purchased 8 platform 3 15s hp. These subs are no joke. Running them in a 2.5 to 1 ratio 4th order. Extremely musical, competition ready. They are rated at 3k and I’m only clamping 850 watts to each right now and already at 160db. Can’t wait to get some real power to them. In my opinion they are a damn good all around sub. You will not be disappointed.
Rated 5 out of 5
Mike Zipay (verified owner)–
Finally have my single 15″ broke in and have to say that l can’t stop turning the volume up now! Sounds amazing and doesn’t even break a sweat when l get crazy with some Beach Boys!!
Good Vibrations?!?! Hell Yeah they are!!!! Well worth the little bit extra for the upgrades also. My only regret is that l didn’t order it sooner. Looking into a pair of Platform 2 12’s to upgrade the rest of the box… Keep you posted!!
Rated 5 out of 5
Mike Zipay (verified owner)–
Awesome sub. Keeps getting louder now that it’s broken in. Should have ordered it a long time ago…
Rated 5 out of 5
Kyle French –
Want a musical sub? Want to do some killer demos? How about dominating the SPL competition lanes? Well this should be the subs you choice! Without a doubt one of the best subs on the market today! Have four of these in a 3.8-1 4th order wall and man do they get down!! Highly recommend to anyone looking for an all around great performing subwoofer!
Rated 5 out of 5
Joseph Smith –
Some of the best spl subs around or even the best demo subs around. I have 8 pf3 hp 15s in my 99 Chevy Tahoe. Product and customer service is #1 in the business.
Rated 5 out of 5
Blade Thompson –
Honestly doesn’t get better for a all around sub. Hands down the best sub I’ve ever owned takes power like a champ can beat on it for hours on end and not have to worry about it.. love these subs
Rated 5 out of 5
Jordan Holland (verified owner)–
The quality of these subwoofers are outstanding and you cant beat the customer service. David more and his guys are on another level at PSI
Rated 5 out of 5
Jay –
It’s a beast have a single one in a custom box on 3k getting down can u say lows ?
Rated 5 out of 5
Nicholas Tabb (verified owner)–
I just installed this sub last night on a sundown sfb 3k and this sub bumps. It’s very clear and loud and hits amazing lows and highs as well. I can shake houses from a 1/4 mile away and I highly recommend this sub if you want a very musical but super loud subwoofer.
Daniel lucas –
If you are looking for a very good and reasonable priced subwoofer, look no further. I have 2 of the platform3 15s and very are amazing! Hands down one of the best subs on the market and great costumer service! These subs are beasts!!!
Charles rickard –
one of my favorites. I ran 4 of these for a few years in a flat wall and a 6th order on 12-16k. great quality parts. mine were also custom painted. love the options with this company. American made
Matt Harris –
Got bass? No? Look no further than this beast. Before I installed mine I was sad, living life one weak bass line at a time. Now I have more bass than I know what to do with, I’m giving bass out to needy children at orphanages. Well, that might be a slight exaggeration but I definitely increased my bottom end by a great deal. Do yourself a solid and pick one up today. You might want to hit the gym first though, these bad boys are heavy.
Joseph Smith –
I purchased 8 platform 3 15s hp. These subs are no joke. Running them in a 2.5 to 1 ratio 4th order. Extremely musical, competition ready. They are rated at 3k and I’m only clamping 850 watts to each right now and already at 160db. Can’t wait to get some real power to them. In my opinion they are a damn good all around sub. You will not be disappointed.
Mike Zipay (verified owner) –
Finally have my single 15″ broke in and have to say that l can’t stop turning the volume up now! Sounds amazing and doesn’t even break a sweat when l get crazy with some Beach Boys!!
Good Vibrations?!?! Hell Yeah they are!!!! Well worth the little bit extra for the upgrades also. My only regret is that l didn’t order it sooner. Looking into a pair of Platform 2 12’s to upgrade the rest of the box… Keep you posted!!
Mike Zipay (verified owner) –
Awesome sub. Keeps getting louder now that it’s broken in. Should have ordered it a long time ago…
Kyle French –
Want a musical sub? Want to do some killer demos? How about dominating the SPL competition lanes? Well this should be the subs you choice! Without a doubt one of the best subs on the market today! Have four of these in a 3.8-1 4th order wall and man do they get down!! Highly recommend to anyone looking for an all around great performing subwoofer!
Joseph Smith –
Some of the best spl subs around or even the best demo subs around. I have 8 pf3 hp 15s in my 99 Chevy Tahoe. Product and customer service is #1 in the business.
Blade Thompson –
Honestly doesn’t get better for a all around sub. Hands down the best sub I’ve ever owned takes power like a champ can beat on it for hours on end and not have to worry about it.. love these subs
Jordan Holland (verified owner) –
The quality of these subwoofers are outstanding and you cant beat the customer service. David more and his guys are on another level at PSI
Jay –
It’s a beast have a single one in a custom box on 3k getting down can u say lows ?
Nicholas Tabb (verified owner) –
I just installed this sub last night on a sundown sfb 3k and this sub bumps. It’s very clear and loud and hits amazing lows and highs as well. I can shake houses from a 1/4 mile away and I highly recommend this sub if you want a very musical but super loud subwoofer.