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Rockford Fosgate Pro 401SP
Rockford Fosgate Pro 401SP
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Old 13th December 2019, 01:06 PM   #1
caraudioguy2100 is offline caraudioguy2100
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Default Rockford Fosgate Pro 401SP

Anyone have a schematic for this amp ?

Board number PC-4802-A
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Old 13th December 2019, 01:58 PM   #2
Perry Babin is offline Perry Babin  United States
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Is this close?
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File Type: pdf rockford - punch401s-4331.pdf (495.3 KB, 12 views)
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Old 14th December 2019, 04:34 AM   #3
caraudioguy2100 is offline caraudioguy2100
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Yes thanks for the schematic
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Old 14th December 2019, 04:59 AM   #4
caraudioguy2100 is offline caraudioguy2100
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In the schematic you sent it shows the power supply filter caps at 330uf 63 volt

The caps that I pulled from the amp were blown and were 1000uf 50 volt but I donít know if these were original or not since the amp was in rough shape .

The only caps Iíve ever seen in rockfords were the 330uf

Should I stick with the 330uf for the caps ?
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Old 14th December 2019, 05:02 AM   #5
Perry Babin is offline Perry Babin  United States
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I've never seen a 'pro' model.

The 330uF work perfectly fine. When you buy replacements, buy low-impedance, 105C caps. When the amps are abused, the primary filter caps can overheat if standard caps are used.
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Old 14th December 2019, 05:06 AM   #6
caraudioguy2100 is offline caraudioguy2100
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Here are a couple of pics of the amp .
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File Type: jpg 98AA3087-6E08-498D-9935-28C7DC0228D9.jpg (1.03 MB, 38 views)
File Type: jpg 3019D999-2140-4597-8CAF-9389CDE65782.jpg (1.09 MB, 39 views)
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Old 16th December 2019, 06:19 PM   #7
Crazylogix is offline Crazylogix  United States
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From Rockford's web site, the Punch 401SP was sold at Authorized Dealer "Audio Express" with minor cosmetic changes to Punch 401S. Checking the manuals for both (model year 2003) they are the same amp. I would go with the parts listed on the schematic Perry posted.
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Old 17th December 2019, 01:41 AM   #8
seankane is offline seankane  United States
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They are the same amp. Audio express had the board color changed by Rockford, added the maximum watt rating added to the badge with a little fake carbon fiber in the emblem. They wanted their own line if you will to attract buyers and sell amps. I guess they figured if their amps were pro models they would sell more amplifiers.


I see people list these all the time on ebay calling them pro models with way higher power ratings and being listed as rare. They are neither. Same exact amp as the normal model with a blue board.
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