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Rockford Fosgate T2500-1bdCP
Power Series mono sub amplifier 2,500 watts RMS x 1 at 2 ohms (New Stock)
Item # 57525001CP | MFR # T2500-1BDCP
$1,599.99 Earn up to 1,600 Rewards points
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Our take on the Rockford Fosgate T2500-1bdCP by Crutchfield's Buck Pomerantz
Powerful bass performance
Rockford Fosgate enjoys a well-deserved reputation for building high-quality mobile audio products. Their Power Series amps sit at the top of the car audio food chain, with proven durability and proprietary technologies that deliver stronger, more reliable performance than most other amps on the planet today.
Rockford Fosgate's high-tech solutions yield more power
Power Series amplifiers actively monitor their speakers' performance using Rockford Fosgate's Constant Power technology. A speaker's impedance naturally fluctuates as it performs. So, just like your cruise control increases the engine's RPM to maintain your car's speed uphill, Constant Power maintains this amp's output by increasing its internal voltage and current when the speaker's impedance rises. This results in up to a 25% increase in the amp's total power output, especially in the crucial range below 50 Hz where a sub amp really has to shine.
Rugged construction, massive bass
Rockford Fosgate builds each Power Series mono amplifier with heavy-duty, state-of-the-art components. The award-winning Dynamic Thermal Management design manages the temperature of the internal components, distributing heat evenly for higher efficiency and lower distortion. The unique heat sink allows the heat to escape more readily so the high-power output transistors stay cooler and last longer.
2,500 watts of raging Rockford Fosgate power
The T2500-1bdCP mono sub amp uses an efficient Class bd design to deliver up to 2,500 watts to your subwoofer system. This amp can even drive a 1-ohm load, so you can get massive bass out of a wide variety of system designs. Competitors, you can tie two of these amps together to power a single sub system. The variable 24/dB per octave crossover creates a more natural sounding transition from your speakers to your subs. And the 2-year warranty tells you that Rockford Fosgate stands behind this bass behemoth.
Best amp I've owned so far. You will need extra batteries or high output alternator to feed this amp.
QMan, Pearland, TX
What's in the Box:
- Mono amplifier
- Four 1-1/2" Self-tapping screws
- Installation & Operation manual (Eng/Fre/Spa/Ger/Ita)
- Punch Amplifier Performance Verification Certificate
- mono subwoofer amplifier
- 1,500 watts RMS x 1 at 4 ohms (2,500 watts RMS x 1 at 2 ohms)
- 2,500 watts RMS x 1 at 1 ohm
- CEA-2006 compliant
- Dynamic Thermal Management cooling system
- Master Sync: allows two of these amps to be tied together
- variable low-pass filter (32-250 Hz, 24 dB/octave)
- selectable subsonic filter (28Hz, 12 dB/octave)
- variable bass boost (0-18 dB at 45 Hz)
- optional wired remote bass boost
- Class-BD amplifier design
- MOSFET power and output stages
- preamp inputs and outputs
- 1/0-gauge power and ground leads and an 250-amp fuse recommended wiring and hardware not included with amplifier
- no onboard fuses when installing multiple amps in a system, an additional 250-amp in-line fuse between the distribution block and the amplifier is recommended
- 21-7/8"W x 2-3/16"H x 9-7/16"D
- warranty: 2 years
- Our 60-day money-back guarantee
Rockford Fosgate T2500-1bdCP Reviews
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Features and Specs
|RMS Power Output (Watts x Channels)||
1500 x 1
|Peak Power Output (Watts x Channels)||5000 x 1|
|Power at 2 Ohms (Watts x Channels)||2500 x 1|
|Bridged Power (Watts x Channels)||N/A|
|Minimum Impedance Bridged||N/A|
|Minimum Impedance Unbridged||1|
|Best Frequency Response||20-250 Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||70 dB|
|Low-Pass Crossover Frequency||35-250 Hz|
|Low-Pass Slope (dB/octave)||24 dB/oct|
|High-Pass Crossover Frequency||N/A|
|High-Pass Slope (dB/octave)||N/A|
|Bass Boost||0-18 dB|
|Bass Boost Frequency||45 Hz|
|Speaker Level Inputs||No|
|Preamp Outputs||1 pair|
|Parts Warranty||2 Years|
|Labor Warranty||2 Years|
Overview: With its super efficient Class-BD circuit topology, the Rockford Fosgate T2500-1bd assures maximum power output. Due to its dedicated low frequency response, this amplifier is optimized for mid-bass speakers or subwoofers only. The amplifier is 1-ohm stable (2,500 watts x 1) and will drive a pair of 4-ohm DVC subwoofers or quad-configuration of 2-ohm DVC subwoofers with ease.
Class bd Design: Rockford Fosgate bd topology is a revolutionary patented design, integrating a technology that is more efficient than typical class AB and has lower distortion than class D designs. Punch bd amplifiers are 75-80% efficient vs. 20-60% efficient class ab amplifiers. This means, more power from your amplifier with less drain on your vehicles electrical and charging system.
Cast Aluminum Heatsink: The cast aluminum heatsink dissipates heat generated by the amplifier's circuitry. The inherent advantage of casting provides a 30% improvement of cooling over conventional extrusion heatsink designs.
Dynamic Thermal Management (DTM): DTM Evenly distributes excess heat across entire amplifier heatsink.
MEHSA3: MEHSA3 reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life span. MEHSA3 (Maximum Efficiency Heat Sink Application - gen. 3) is a proprietary process that yields up to five times better heat transfer than traditional FET mounting techniques, using the exact same components. A multi-layer insulated metal substrate operating with minimal thermal resistance spreads heat both downward and outward to quickly dissipate heat from each device across the heatsink. This process combined with Rockford's optimized heatsink designs, DSM (Discrete Surface Mount) technology and MOSFET devices, allows the amplifier to squeeze more watts per cubic inch from every output device as well as provide consistent thermal stability. The 3rd generation creates a dielectric layer between the ceramic topside and the aluminum base that retains all of the electrical isolation and capacitive coupling of the original MEHSA material increasing it's thermal conductivity. The higher power handling results in a 20% reduction in thermal impedance.
DSM (Discrete Surface Mount): DSM utilize 1% tight-tolerances improving efficiency of the circuit, decreases cross-talk from other discrete components and lowers operating temperature. An industry-leading manufacturing process, DSM utilizes high-speed robotics, high-quality 1% tight-tolerance parts and large board traces. The discrete components are laser etched to meet a particular value and a very low tolerance. This lower tolerance improves the efficiency of the circuit, decreases cross-talk from other discrete components and lowers operating temperature.
TO-247 MOSFETs: The Rockford Fosgate amplifier use custom TO-247 MOSFETs. These have 60% more metal tab area for more power capacity, lower impedance and improved heat dissipation over traditional TO-220 MOSFETs found in many other amplifier. The MOSFET transistor is the best type of device to use when building a high quality mobile amplifier. The TO-247 has 60% more metal tab area and its unique, fully encapsulated design is capable of housing a silicon die (the heart of the MOSFET) twice as large as the TO-220. The larger die provides more power handling capacity. Additionally, the extra metal tab area ensures that no matter what size silicon die is inside, the thermal impedance will always be lower than in the TO-220 due to improved heat dissipation.
Power and Protection LEDs: The LEDs are located on top of the amplifier. A blue Power LED illuminates when the amplifier is turned on. A red Thermal LED illuminates if the amplifier overheats. The yellow Protect LED illuminates if a short circuit or too low an impedance is detected at the speaker connections. When any of the protection circuits engage, the amp automatically shuts down until the problem is corrected.
Mode Switch: This function is used to set the amplifier between single amplifier use, and Master or Save for when connecting multiple bd amplifiers together. The first amplifier in the series should be set to Master and the subsequent amplifiers set to Slave. This allows one gain, crossover, infrasonic filter, and bass boost setting for all daisy-chained amplifiers.
Internal Crossover: The amplifier's internal crossover has a 24 dB/octave slope. The crossover point is variable from 35Hz to 250Hz.
Punch EQ: Punch EQ acts as a variable bass boost; 0-18 dB at 45 Hz.
Infrasonic Filter: The infrasonic high pass filter is designed to prevent frequencies below the audible range from being applied to the subwoofer from the amplifier, consequently improving subwoofer performance and power handling, particularly in vented enclosures. The crossover point is fixed at 28 Hz, the slope is 12 dB/octave, and the filter can be turned on or off to suit your preference.
Phase Switch: This feature is used when bridging two bd amplifiers together using a bd Sync cable (sold separately) to phase one amplifier 180-degrees from the other when driving a common load.
Power Connections: The power and ground connections are nickel-plated set-screw wire terminals and will accommodate up to 1/0-gauge wire. An external 300-amp fuse (not included) must be installed on the power wire. The remote turn-on terminal will accept wire sizes up to 8-gauge. The supplied hex-key is required to tighten/loosen the terminals.
Speaker Connections: The nickel-plated set-screw speaker terminals will accept wire sizes from 16 to 8-gauge.The included hex-key is required to tighten/loosen the terminals.
Note: Although there are two sets of speaker terminals, the amplifier still produces a monaural signal. The A and B speaker outputs are internally wired in parallel.
Differential Input RCA Inputs: The amplifier features a pair of differential RCA input jacks for easy connection of signal level input. Differential input circuitry measures the voltage of both the positive (+) and negative (-) portions of the input signal, subtracting the voltage common to both conductors (noise); resulting in a cleaner signal. Reducing the noise on the input then improves the sound quality of the output. The RCA input jacks are nickel-plated to resist signal degradation caused by corrosion.
RCA Outputs: The amplifier also features a pair of RCA "Pass-Thru" jacks which provide a convenient source for daisy-chaining an additional amplifier without running an extra set of RCA cables from the front of the vehicle to the rear amplifier location. The RCA output jacks are nickel-plated to resist signal degradation caused by corrosion.
Remote Punch EQ (PEQ) Connection: An RJ-45 jack is provided for connecting an optional remote PEQ control (sold separately). If you use the remote PEQ, the Punch EQ control on the amp is disabled, and replaced by the remote.
Note: Previous model Punch Bass and Para-Punch remotes will not work with this amp.
bd Sync Connection: This amplifier has a proprietary 6-pin mini-DIN connector. When operating two of these amplifiers together in a bridged mode, a bd Sync cable (sold separately) must be used. This will allow the two independent frequency carrier generators in each unit to b synchronized.
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3 questions already asked
I ran my 4ohm Dvc mojo bridged to 2ohms on it and had no problems. been running it like this for a few months now. I love the fact they went old school on this amp and took the fuses out. I feel like you get more power from it. [ Jon Paul Feb 24, 2017 ]
There isn't a fuse onboard.. You have to use a 300amp fuse inline before connecting. [ Titus Nov 11, 2016 ]
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/. [ Jeff Feb 26, 2015 ] Staff