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FS: Two (2) Rockford Fosgate The Punch SP-812 subs: Tested & working - $175 (hayward / castro valley)
condition:
fair
make / manufacturer:
Rockford Fosgate The Punch
model name / number:
SP-812
size / dimensions:
12"
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With our uncle passing away, we inherited some audio, video, and computer/networking gear that includes these two (2) – one pair of Rockford Fosgate the Punch 12” SP-812 8 Ohms subwoofer speakers.
I connected them to the amp on my workbench and they sound great – Tested & working. They sound pretty good in fact for being from the 1990’s. The cones do have a slight “dent” that you can pull out easily based on the online directions, but to my ears the still sounded fine. Otherwise, these speakers have the scratches that you would expect on a pair of vintage speakers, those blemishes and dings from the years. None of the visual blemishes impact the operation or use of the speakers that I can tell.
In my efforts to clean out and tidy up the garage I’m offering it up to a new home.
If you have any comments, questions, or concerns regarding the item or conditions of the offer, please feel free to send me a message. Asking $175 or Best Offer (OBO). Will consider all reasonable offers - I would rather have you benefit from having this in your home or office than sitting in my garage.
Reasonable arrangements can be made for meeting up/pickup/drop off, keeping prudent pandemic precautions in mind (social distancing, do not meet when you are sick/asymptomatic, wear N95/KN95 mask, etc). Note: no texting, email only and cash only thank you. Thanks for looking over my ad. Even if you do not decide to contact me regarding this item, I hope you find what you are looking/shopping for.
Details - TECHNICAL DATA:
Nominal Diameter 12.00 in (304.8 mm]
Magnet Weight 38.00 oz [1079.2 g]
Frequency Range 34 - 4,000 Hz
Nominal Impedance 8 Ω
DC Resistance (RE) 6.7Ω
Resonance Frequency (fs) 34 Hz
Mechanical Q Factor (QMS) 2.90
Electrical Q Factor (QES) 0.84
Total Q Factor (QTS) 0.65
Effective Cone Area (SD) 84.48 in^2 (0.054545 m^2]
Equivalent Air Volume (VAS) 5.156 ft^3 [146.0 L]
Compliance (CMS) 0.00035 m/N
Moving Mass (MMS) 2.27 oz [64.4 g]
Voice Coil Diameter 2.00 in [50.8 mm]
Voice Coil Winding Height 0.69 in [17.5 mm]
Voice Coil Former Material 5 Mil Aluminum
Voice Coil Inductance 1.02 mH
Force Factor (BI) 10.4 Tm
Linear Excursion (Xmax) 0.24 in [6.1 mm]
Sensitivity (SPL) 90 dB W/m
Operating Power (PE) 100 W
Here is a good description I found online:
The Rockford Fosgate The Punch SP-812 is a 12-inch subwoofer from the early 1990s (circa 1990–1994), known as a "classic" or "Pro" series woofer. It is an 8-ohm, U.S.-made driver designed for high-performance car audio, often used in multiples to achieve deep, thunderous bass.
Model Identification: The SP-812 was part of the 1990 Punch subwoofer lineup (SP series), with the "8" typically denoting 8 ohms, distinct from the 4-ohm SP-412.
Performance & Usage: These, along with similar "Punch Classic" (PCH-812) models, were staples of 90s car audio, known for being used with vintage amplifiers like the Punch 45HD or Punch 150.
Design & Legacy: They are remembered for their robust construction and are considered desirable by "old school" car audio collectors, frequently appearing in retro builds today.
Specifications: As a 12-inch 8-ohm driver, it was designed to be bridged with powerful amplifiers, such as a Punch 150 run in mono.
These subwoofers are highly sought after by collectors, with used pairs often holding significant value depending on condition.
Includes:
1 pair (2 in total) of vintage Rockford Fosgate The Punch SP-812 8 Ohms subwoofers
AS-IS NO RETURNS I am just an individual seller trying to clean out their garage from projects and their uncle passing away, trying to break even from the items and this effort. I do my best to test items and give an accurate description of the items.
References:
Datasheet: https://rockfordfosgate.com/rftech/library/1990/5_subwoofers/sp-412_812-ts.pdf?srsltid=AfmBOoostlNlRCfqM3oMe0QTYaRLUbntnY2Q0Rahk8pLLPL67If7-jho
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Keywords:
Keywords (title/tags/search terms) Rockford Fosgate The Punch SP-812 8-inch subwoofer Dual voice coil DVC 4-ohm 200W RMS (or specify actual RMS) Subwoofer pair Car audio subwoofer Punch series Vintage Rockford Speaker driver Bass sub Listing title examples Rockford Fosgate The Punch SP-812 12" DVC Subwoofer – Tested Rockford Fosgate SP-812 Pair 8" The Punch Car Subwoofers DVC 8Ω Rockford Fosgate The Punch SP-812 12" Bass Sub Short phrases/bullet copy (description) 12" Rockford Fosgate The Punch SP-812 subwoofer Dual voice coil (DVC) 8-ohm configuration for flexible wiring Delivers deep, punchy bass for car audio systems Clean cone and surround — no tears, minor dents Tested and working Ideal for sealed or ported enclosures Perfect for upgrade or replacement Original Rockford Fosgate part — durable construction