Do older mono amplifiers need the "bd-Sync" cable in order to be bridged together?
Only select Rockford Fosgate Mono amplifiers are capable of being "bridged" together in order to create a single high-powered amplifier. Please check your owner's manual carefully before bridging a pair of Mono amplifier's together.
Phase Switches - These are used on Rockford Fosgate Mono amplifiers that are capable of being "bridged" in pairs. When using Phase Switches, each amplifier produces 1/2 a sign-wave. The 0° Phased amplifier produces the Posivite (+) sign-wave. The second amplifier, set to 180°, produces the Negative (-) sign wave. Together they produce a full musical sign-wave.
Gain Controls - It's important to set the gain control on both amplifiers exactly the same. This allows the amplitude of the first amplifier (0°) to match the sign-wave amplitude of the second amplifier (180°.) This insures that both amplifiers produce a full musical sign-wave.
bdSYNC Cable - Some Rockford Fosgate Mono amplifiers require the use of a 6 pin mini-DIN connector called the "bdSYNC" cable. When operating these types of amplifiers in bridged mode, the Sync cable must be used! This will allow the two independent frequency carrier generators in each amplifier to be Synchronized.
Compatible Rockford Fosgate Amplifiers:
Model | Minimum Impedance (1-amp) |
Minimum Impedance (2-amps bridged) |
Cable Type |
2012-Current POWER T2500-1bdCP | 2500W @ 1-ohm | 5000W @ 2-ohms | bdSYNC2 |
2009-2011 POWER T25000-1bd | 2500W @ 1-ohm | 5000W @ 2-ohms | bdSYNC2 |
2006-2008 POWER T40001bd | 4000W @ 1-ohm | 8000W @ 2-ohms | bdSYNC2 |
2004-2005 POWER T30001bd | 3000W @ 1-ohm | 6000W @ 2-ohms | bdSYNC2 |
2004-2008 POWER T20001bd | 2000W @ 1-ohm | 4000W @ 2-ohms | bdSYNC2 |
2004-2008 POWER T10001bd | 1000W @ 1-ohm | 2000W @ 2-ohms | bdSYNC2 |
2003 TYPE RF XC7/XA7 (bd) | 1500W @ 2-ohms | 3000W @ 4-ohms | bdSYNC2 |
2003 TYPE RF XC6/XA6 (bd) | 1100W @ 2-ohms | 2200W @ 4-ohms | bdSYNC2 |
2003 TYPE RF XC5/XA5 (bd) | 700W @ 2-ohms | 1400W @ 4-ohms | bdSYNC2 |
2003 POWER 1501bd | 1500W @ 2-ohms | 3000W @ 4-ohms | bdSYNC2 |
2003 POWER 1001bd | 1000W @ 2-ohms | 2000W @ 4-ohms | bdSYNC or bdSYNC2 |
2003 POWER 501bd | 500W @ 2-ohms | 1000W @ 4-ohms | bdSYNC or bdSYNC2 |
2002.5 TYPE RF X7 (bd) | 1500W @ 2-ohms | 3000W @ 4-ohms | bdSYNC or bdSYNC2 |
2002.5 TYPE RF X6 (bd) | 1100W @ 2-ohms | 2200W @ 4-ohms | bdSYNC or bdSYNC2 |
2002.5 TYPE RF X5 (bd) | 700W @ 2-ohms | 1400W @ 4-ohms | bdSYNC or bdSYNC2 |
2002 POWER 1500bd | 1500W @ 2-ohms | 3000W @ 4-ohms | bdSYNC or bdSYNC2 |
2002 POWER 1000bd | 1000W @ 2-ohms | 2000W @ 4-ohms | bdSYNC or bdSYNC2 |
2002 POWER 500bd | 500W @ 2-ohms | 1000W @ 4-ohms | bdSYNC or bdSYNC2 |
1997/1998 POWER 250.1 | 500W @ 2-ohms | 1000W @ 4-ohms | No |
1997/1998 POWER 50.1 | 200W @ 1-ohm | 400W @ 2-ohms | No |
1996 POWER 250m | 500W @ 2-ohms | 1000W @ 4-ohms | No |
1996 POWER 50m | 200W @ 1-ohm | 400W @ 2-ohms | No |
1995 POWER 500m | 500W @ 2-ohms | 1000W @ 4-ohms | No |
For assistance with subwoofer diagrams, please visit our Woofer WiringWizard.
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