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Rockford Fosgate T500-1bdCP

Power Series mono sub amplifier — 500 watts RMS x 1 at 2 ohms (New Stock)

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Our take on the Rockford Fosgate T500-1bdCP

by Buck Pomerantz
Rockford Fosgate

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

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.

High-grade internal components mean high-power output.

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.

Read more

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.

A rockin' 500 watts

The T500-1bdCP mono sub amp uses an efficient Class bd design to deliver up to 500 watts to your subwoofer system from a remarkably compact chassis. This amp can even drive a 1-ohm load, so you can get massive bass out of a wide variety of system designs. 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 bruiser.

T500-1bdCP connections

Highlights:

  • mono subwoofer amplifier
  • 300 watts RMS x 1 at 4 ohms (500 watts RMS x 1 at 2 ohms)
  • 500 watts RMS x 1 at 1 ohm
  • CEA-2006 compliant
  • Dynamic Thermal Management cooling system
  • variable low-pass filter (35-250 Hz, 24 dB/octave)
  • selectable subsonic filter (28Hz, 24 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-level inputs and outputs
  • 4-gauge power and ground leads and an 100-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 100-amp in-line fuse between the distribution block and the amplifier is recommended
  • 11-7/16"W x 2-1/4"H x 8-15/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Performance
RMS Power Output (Watts x Channels) 300 x 1
Peak Power Output (Watts x Channels) 690 x 1
Power at 2 Ohms (Watts x Channels) 500 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 80 dB
Input Voltage 14.4v
Features
Amplifier Class BD
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
Fan Cooled No
Fuse Rating 100
Speaker Level Inputs No
Preamp Outputs 1 pair
Width (inches) 11-7/16
Height (inches) 2-1/4
Depth (inches) 8-15/16
Parts Warranty 2 Years
Labor Warranty 2 Years
Product Research
What's in the box?

Download owner's manual

  • Mono-channel amplifier
  • Four 1-1/2" Self-tapping screws
  • Installation & Operation manual (Eng/Fre/Spa)
  • Power Amplifier Performance Verification Certificate

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features
Controls
Connections

Features

Overview: With its super efficient Class-BD circuit topology and Constant Power configuration, the Rockford Fosgate Power T500-1bdCP 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 (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. Power 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.

Constant Power: Its proprietary "Constant Power" configuration provides the ability to instantaneously deliver maximum output power to speakers without regard to its varying impedance while maintaining high-efficiency and thermal performance. Music and speakers have a dynamic relationship. So your listening experience is cleaner, louder and more impressive than ever before.

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.

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.

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.

NOMAD (NOn-Multiplying Advanced Decision): NOMAD is an intelligent protection circuit that uses an analog computer to make real time decisions regarding temperature, voltage, current and impedance. The unit is protected without limiting sound output unless needed.

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.

Controls

Internal Crossover: The amplifier features a built-in 24dB/octave Butterworth low-pass filter with a variable crossover point from 35Hz to 250Hz.

Punch EQ2: The Punch EQ on-board equalization circuit helps correct for acoustical deficiencies in the listening environment. This control is a narrow band adjustment variable from 0dB to +18dB at 45Hz with a Gyrator based Punch EQ that eliminates frequency shift with boost.

Infrasonic Filter: This 28Hz high-pass filter (12dB/octave Butterworth) is designed to prevent frequencies below the audio range from being applied to the subwoofer from the amplifier. This infrasonic filter improves your subwoofer performance and power handling, particularly in vented enclosures.

Connections

Power Connections: The power and ground terminals are nickel-plated captive c-clamp wire connectors and will accommodate up to 4-gauge wire. An external 100-amp fuse (not included) must be installed on the power wire. If a wiring kit is used which includes a fuse with a value other than 100-amps, the original should be replaced with a 100-amp fuse. The remote turn-on terminal will accept wire sizes of 12- to 24-gauge. A Phillips-head or slotted screwdriver (not supplied) is required to tighten/loosen the terminals.

Dual Speaker Terminals: The Power mono-amplifier features two pair of speaker output terminals so you can easily connect two 4-ohm speakers to the amplifier in a 2-ohm load configuration. The two pair of nickel-plated clamp wire connectors will accept 8-gauge to 18-gauge wire. A Phillips-head or slotted screwdriver (not supplied) is required to tighten/loosen the terminals.

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 (575ROCKPEQ, 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.

 
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Rockford Fosgate T500-1bdCP Reviews

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5 out of 5

Awesome Amp!!!!

Written By Synciere, Brooklyn, NY on Monday, May 19, 2014
Crutchfield Customer Review (What's this?)
 
Had to replace an amp and bass set that got blown out!!! Rockford Fosgate was recommended and I'm definitely pleased... I'm pushing two 12's ( JL's) and these joints produce some rumbling bass you can literally FEEL THE BASS( inside and outside the car)!!!! Definitely would recommend this amp.. I now have to also change my door and rear deck speakers because the bass is drowning them out!!!! GO FOSGATE!!!! Whooo hooooo!!!!!
Pros:
Nice design , awesome power,
Cons:
Haven't found one yet...
2 out of 2 people found this helpful
Was this review helpful?    Yes | No
 
5 out of 5

The punch

Written By Timothy Williams, juliette ga on Tuesday, March 11, 2014
Crutchfield Customer Review (What's this?)
 
Amps has lots of power. It pushes my 3 jl audio tens hard!
Pros:
803 watts in a small package!!
Cons:
Kinda hard to adjust but worth it.
1 out of 1 people found this helpful
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5 out of 5

Simply great

Written By Anonymous, Eastern North Carolina on Sunday, July 08, 2012
Crutchfield Customer Review (What's this?)
 
Great amp, mine arrived looking brand new, and completely impressed me. The only thing that wasn't included was a birth sheet so you know the exact output but saving the money buying refurbished was good enough. This amp is paired to (2) JL10's in a .75 sealed box in my extended cab sierra and it pounds hard. Its clean, clear, no distortion. I guess its doing between 250 to 300 watts each sub at 2 ohms and the amplifier gain is set about 5. I also use the peq remote with great results. Its easy to adjust the bass between rock, country, or old school rap. I haven' t had the amp get even remotely warm. And its supplied by 4 gauge RF cable kit. Bottom line ..I will be buying the refurbished T1000-1 BDCP mono for my car project. I was skeptical about a refurbished product but quality is great and will be buying again without hesitation. If you need the power and in a compact size, not much bigger than my p300-1 this is the amp.
Pros:
More than enough power for most 10 or 12 pairs, better than great price, arrived looking as new, another great Rockford rebuild.
Cons:
None I have found, except it didn't include the birthsheet.
8 out of 8 people found this helpful
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5 out of 5

Worth every penny!

Written By CanuckJay, Lynnwood, WA. on Saturday, June 30, 2012
 
I've had this beautiful amp for about a year now and couldn't be happier. I was really hesitant shelling out all the money for an amp but my friend explained the importance of good clean and constant power to my 10 inch self contained JL sub. The sound is clean, and powerful. It's easy to crank up the bass and hear no distortion and have my friends say: "Dude, that's tight!". I just wish I had done this years ago!
Pros:
power, build, looks beautiful, runs cool.
Cons:
shame that it stays hidden because it looks so cool.
5 out of 5 people found this helpful
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5 out of 5

Rockford Fosgate T500-1bdCP

Written By b gemmiti, brooksville,FL on Friday, December 03, 2010
 
this amp really rocks pushing a punch 12 p3 to its limits. kick butt.
4 out of 7 people found this helpful
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1 question already asked

Is the T500 stable at .5 ohms? [ joe  Apr 15, 2014 ]
1 answer
  • No [ CHRISTIANA   Apr 16, 2014 ]

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For a more in-depth review and enhanced detailed information on the Rockford Fosgate T500-1bdCP, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_5755001CP/Rockford-Fosgate-T500-1bdCP.html ).