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Rockford Fosgate Power 1501BD
Rockford Fosgate Power 1501BD
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Old 15th March 2019, 07:34 PM   #1
caraudioguy2100 is offline caraudioguy2100
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Default Rockford Fosgate Power 1501BD

Someone tried repairing this amp before .

They have 10 ohm gate resistors with 3205íS installed are the 10 ohm gate resistors fine or should I use the 47 ohm ?


Also does anyone know what value C60 is ?

It sits behind the LM337 regulator

Also the value of R44 ?

It sits next to the transformer
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Old 15th March 2019, 07:47 PM   #2
Perry Babin is offline Perry Babin  United States
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I leave the 10 ohm gate resistors. Some use 47. Either will work. All need to be the same value.

C60 is the same as C59, 100uF@25.

R44 is 10 ohms.
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Old 16th March 2019, 12:05 AM   #3
caraudioguy2100 is offline caraudioguy2100
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Do you know what the value is of the gate resistors for the outputs ?

Someone switched them all and I donít think they are the correct value
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Old 16th March 2019, 12:38 AM   #4
seankane is offline seankane  United States
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If memory serves I believe they are 15 ohm
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Old 16th March 2019, 12:40 AM   #5
caraudioguy2100 is offline caraudioguy2100
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Thatís what I thought but wasnít sure .

They have 27 ohm in there now
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Old 16th March 2019, 12:45 AM   #6
seankane is offline seankane  United States
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I have also seen 22 ohm in there from the factory as well, I have also seen a mix of 15 ohm and 22 ohm from the factory.
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Old 16th March 2019, 12:57 AM   #7
caraudioguy2100 is offline caraudioguy2100
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Anyone have a schematic for this amp ?

amprepairguy@hotmail.com

I noticed someone has switched other caps in here to the wrong value and other parts as well so Iím in need of a schematic to figure this amp out since there are a lot of wrong values
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Old 16th March 2019, 01:13 AM   #8
seankane is offline seankane  United States
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Here are some documents that may help.
Attached Files
File Type: pdf 02_amps_bd_1500bd_schematic.pdf (483.3 KB, 12 views)
File Type: doc 02_amps_bd_1500bd_testprocedure.doc (25.5 KB, 10 views)
File Type: pdf 02_amps_bd_1500bd_pcblayout.pdf (736.7 KB, 7 views)
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Old 16th March 2019, 02:53 AM   #9
caraudioguy2100 is offline caraudioguy2100
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In the schematic half the outputs have 15 ohm gate resistors the other half have 22 ohm gate resistors .

Can I use 15 ohm resistors for all of the outputs ?
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Old 16th March 2019, 03:12 AM   #10
Perry Babin is offline Perry Babin  United States
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I'd suggest that you use the original values but it should be OK with all 15 ohm resistors.
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