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Rockford Fosgate Punch P700-1bd

Mono subwoofer amplifier — 700 watts x 1 at 1 ohm (Factory Refurbished)

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  • Rockford Fosgate Punch P700-1bd

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Item #: 675P7001BD
 

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Our take on the Rockford Fosgate Punch P700-1bd

by Ken Nail

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.

Rockford Fosgate Punch amps

Rockford Fosgate continues to develop progressive sound technologies. Their aim — to produce a smaller amplifier, with all the power and clarity you expect from the Punch name.

High-grade internal components mean high-power output.

Even heat dispersal for longer life

Dynamic Thermal Management

The award-winning "Dynamic Thermal Management" 3-stage cooling system uses forced air to dissipate heat evenly across the amp and out through the heatsink. The internal components in these compact amps stay cooler, resulting in higher efficiency and lower distortion. You get more installation options, without sacrificing wattage or audio quality.

MEHSA cooling process

MEHSA is a Rockford Fosgate proprietary process that increases the heat transfer from the MOSFET devices to the heatsink. This allows the heat to escape more readily from the amplifier, so that the transistors stay cooler.

Maximum Efficiency Heat Sink Application increases heat transfer away from the transistors

P700-1bd Punch performance

The P700-1bd mono subwoofer amp dispenses 225 RMS watts at 4 ohms, or you can wire your subs for lower impedance to achieve higher power output — all the way up to 700 watts at 1 ohm. You can tailor the sound with variable low-pass and subsonic filters, and use the onboard EQ to compensate for your car's acoustics. An optional wired remote control lets you tweak the sound from the front seat for quick adjustments while you're on the road.

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Highlights:

  • mono subwoofer amplifier
  • 225 watts RMS x 1 at 4 ohms (450 watts RMS x 1 at 2 ohms)
  • 700 watts RMS x 1 at 1 ohm
  • CEA-2006 compliant
  • Dynamic Thermal Management cooling system
  • variable low-pass filter filter (35-250 Hz, 12 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-level inputs
  • preamp 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
  • 10-1/8"W x 2-1/4"H x 8-7/16"D
  • warranty: 90 days
  • 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)
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225 x 1
Peak Power Output (Watts x Channels)
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2500 x 1
Power at 2 Ohms (Watts x Channels)
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450 x 1
Bridged Power (Watts x Channels)
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N/A
Minimum Impedance Bridged
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N/A
Minimum Impedance Unbridged
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1
Best Frequency Response
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20-250 Hz
THD at Rated RMS Power
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1%
Signal to Noise Ratio
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80 dB
Input Voltage
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14.4v
Features
Amplifier Class
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BD
Low-Pass Crossover Frequency
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35-350 Hz
Low-Pass Slope (dB/octave)
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12 dB/oct
High-Pass Crossover Frequency
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N/A
High-Pass Slope (dB/octave)
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N/A
Bass Boost
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0-18 dB
Bass Boost Frequency
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45 Hz
Fan Cooled
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No
Fuse Rating
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100
Speaker Level Inputs
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No
Preamp Outputs
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1 pair
Width (inches)
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10-1/8
Height (inches)
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2-1/4
Depth (inches)
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8-7/16
Parts Warranty
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90 Days
Labor Warranty
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90 Days
Product Research
What's in the box?

Download owner's manual

  • Refurbished mono-channel amplifier
  • Four 1-1/2" Self-tapping screws
  • Installation & Operation manual (Eng/Fre/Spa/Ger/Ita)
  • Punch 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, the Rockford Fosgate P700-1BD 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 (700 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.

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 12dB/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 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 Punch 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 Punch P700-1bd Reviews

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5 out of 5

love it

Written By luis, key west , fl on Thursday, April 17, 2014
Crutchfield Customer Review (What's this?)
 
great amp, love it
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5 out of 5

Very nice amp

Written By Nxtinventor, Springfield mo on Tuesday, August 06, 2013
 
Very clean, clear output. Have input from a stock 2010 passat head unit rear speaker output to a audio control lc2i. Works well with a sundown sd12
Pros:
Compact High output Clean design and sou d
Cons:
Gets hot, needs a fan
Was this review helpful?    Yes | No
 
5 out of 5

Amazing amp

Written By Darryl, Gallup, NM on Monday, September 24, 2012
Crutchfield Customer Review (What's this?)
 
Works perfectly with my new P3 punch subwoofer.
Pros:
Easy to mount and hook up.
Cons:
None
1 out of 1 people found this helpful
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5 out of 5

Rockford Fosgate Punch P700-1bd

Written By Anonymous, 37604 on Monday, August 13, 2012
Crutchfield Customer Review (What's this?)
 
I was very satisfied, gave my son my old fosgate 900w amp and replaced it with the P700! The birth certificate says 912w peak and i believe it! Well worth the money!
1 out of 2 people found this helpful
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5 out of 5

Destroyer

Written By Jangle, Washington on Sunday, August 21, 2011
 
If you wire two 10's down to 1ohm this bad boy will hit with TRUE 700 watts. It is just amazing how loud this gets. I have a Punch EQ knob I use in my car to control my bass output. The thing is always on about halfway. All the way up is just ridiculous, and I love bass... So at that level it is almost window popping power. I would recommend pairing this with 2 P210s by Rockford in a good solid sealed box. Since this amp is the higher up the line for the punch series, it doesn't get much love or reviews since it is the most expensive of the line. But if you want competition power for market price this one is a no brainer. BUT IT!
9 out of 10 people found this helpful
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For a more in-depth review and enhanced detailed information on the Rockford Fosgate Punch P700-1bd, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_675P7001BD/Rockford-Fosgate-Punch-P700-1bd.html ).