They sound absolutely amazing. They sound so nice that sometimes I forget they are even playing
Fast quick response for those chest thumping kick drums and the deep low notes that can move around ear wax
I’ve only just installed this sub tonight, but the improved performance over my older woofers is staggering
The more surface area you have, the more efficient the system is. The simple fact is you can move more volume of air. Your typical 10″ woofer has a surface area of 330 cm² and a 12″ with a surface area of only 516 cm². The OnCore SM woofers with the use of our T.H.R.S ™ surround system we are able to produce much larger cone area, such as the SM 12″ with its surface area of 611 cm² that is an 18% cone area increase and the SM 10″ with its 395 cm² that is a whopping 23% for surface area increase and best of all the drivers still fit in the standard 10″ and 12″ mounting holes size
At Oncore we make it our mission to build the best we can for true audio reproduction, this is why we spend hours grueling over every part of our drivers, from motor designs to the cone material. Our proprietary pulp paper cone is a fine example of time and experience that has brought you one of the very best tonal experience we have ever made
GENERAL SPECIFICATIONS
+
Continuous Power Handling (RMS) | 600 W |
Recommended power range | 100-600W |
XMAX (HVC-HAG/2) | 13mm |
Nominal Impedance (Znom) | Dual 2 Ω |
Mounting Depth | 4.06″ / 103mm |
TECHNICAL SPECIFICATIONS
+
Parameters | SM 12 D2 | SM 12 D4 |
---|---|---|
DC Resistance (Re) | 0.85 | 1.45 |
Free Air Resonance (Fs) | 26.94 | 28.395 |
Electrical “Q” (Qes) | 0.336 | 0.385 |
Mechanical “Q” (Qms) | 4.132 | 3.897 |
Total Speaker “Q” (Qts) | 0.311 | 0.35 |
Equivalent Compliance (Vas) LITERS | 84.559 | 81.13 |
Effective Piston Area (Sd) | 617 | 617 |
Efficiency (1 W / 1 m)** | 88.7 | 88.7 |
One-Way Linear Excursion (Xmax)* | 16 | 16 |
PHYSICAL SPECIFICATIONS
+
![]() |
SEALED AND PORTED DESIGNS
+
All design are subject to change .
Sealed |
Ported |
Volume | 1.1 Ft³ / 31.14 L | volume | 1.9 Ft³ / 53.8 L |
Box wall thickness | .75″ / 19.05mm | Box wall thickness | .75″ / 19.05mm |
Box external (W) | 14″ / 35.56 cm | Box external (W) | 16 ” / 40.64 cm |
Box external (D) | 14″ / 35.56 cm | Box external (D) | 20″ / 50.8 cm |
Box external (H) | 14″ / 35.56 cm | Box external (H) | 16″ / 40.64 cm |
F3 | 33 Hz | Round port | 4″ X 15.21″ long or 101.6mm X 386.33mm |
QTC | .7 _ | Tuning frequency | 30 Hz |
F3 | 31Hz |
WARRANTY INFO
+
Oncore Audio warrants its products to be free from defects in material and workmanship for a period of One year from the date of shipment within North America.
If you believe any ONCORE Audio product that you have purchased has a defect in material or workmanship or has failed during normal use within the warranty period, please contact ONCORE at 626-465-3383 for assistance.
Upon inspection by ONCORE Audio, should product repair or replacement be deemed necessary under this warranty to manufacturing defects, ONCORE Audio will, at its sole discretion, repair or replace the defective product with a new or re-manufactured product at no charge. The Customer will be solely responsible for all shipping charges, freight, insurance, and proper packaging to prevent damage or breaking in transit. All shipments of repaired or replaced products by Oncore Audio will be FOB from Oncore Audio at 859 Lawson Street, City of Industry, CA. 91748
WARRANTY EXCLUSIONS
Technical Support should be pursued through channels offered by Oncore Tech Support. ONCORE Audio accepts no liability caused by aftermarket software or hardware modifications or additions. ONCORE Audio is not responsible for giving any technical support concerning the installation or integration of its products the customer did not pay to install. ONCORE Audio is not responsible for a loss of time, even with product failure. Customers are responsible for making sure the installation of the product is done correctly.
ONCORE Audio is not responsible for any loss of work (“down time”) caused by a product requiring service.
This warranty is null and void if the defect or malfunction was due to damage resulting from operation not within manufacturer specifications. It will also be null and void if there are indications of misuse and/or abuse. ONCORE Audio has the option of voiding the warranty if anyone other than an ONCORE technician attempts to service the product. ONCORE Audio will not warrant any problems arising from an act of God (lightning, flooding, tornado, etc.), electrical spikes or surges, or problems arising out of hardware, software, or additional devices added to complement any system/component.
Under no circumstances will ONCORE Audio be responsible for any refund or remuneration exceeding the original purchase price of the product less any shipping fees. ONCORE Audio will not be held responsible for typographical errors on sales receipts, repair tickets, or on our website. ONCORE Audio makes every effort to make sure all information on our website is correct. This warranty is limited and does not cover claims for damage caused by misuse, abuse, neglect, alteration, or burnt/overheated voice coils, normal wear and tear, and is limited to material failures or defects arising from normal use.
RETURN MERCHANDISE AUTHORIZATION (RMA)
If repairs are required, the customer must obtain an RMA number and provide proof of purchase. RMA and services are rendered by ONCORE Audio only. Any shipping costs after 30 days (starting from the original date of purchase) on any item returned for repair is the customers’ responsibility. All returned parts must have an RMA number written clearly on the outside of the package along with a letter detailing the problems and a copy of the original proof of purchase. No COD packages will be accepted. No package will be accepted
without an RMA number written on the outside of the package. RMA numbers are only valid for 30 days from the date of issue.
Should you have any problems with your ONCORE product, please follow these procedures to obtain the service:
ONCORE Repair Department
RMA#____________ 859 Lawson St. City of Industry, CA 91748
What will the SM woofers work best in
+
What is the mounting depth
+
Does the grille come with the SM woofer
+