When it comes to premium home audio systems, Definitive Technology is a name that resonates with audiophiles and home theater enthusiasts alike. Among its notable offerings, the BP7002 stands out as a formidable floor-standing loudspeaker designed to deliver an immersive and dynamic sound experience. A key element of this speaker’s performance is its built-in powered subwoofer, driven by a dedicated internal amplifier. For many owners and seekers of the BP7002, the amplifier becomes an essential component—especially when repairs or replacements are needed.
In this comprehensive guide, we’ll explore everything there is to know about the Definitive Technology BP7002 amplifier, including its functionality, why it’s in demand, where to find it for sale in the USA, and tips for purchasing.
Understanding the BP7002: More Than Just a Loudspeaker
The BP7002 is part of Definitive Technology’s Bipolar SuperTower series, known for their unique approach to sound projection. These speakers are designed to emit sound from both the front and rear, creating a more immersive 3D audio field.
Key Features of the BP7002:
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Bipolar driver configuration for a wide and spacious soundstage
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Built-in 12-inch powered subwoofer
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Integrated 300-watt Class D amplifier
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Two 12-inch low bass radiators for deep bass extension
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High-accuracy midrange and tweeter drivers
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Sleek, modern cabinet design with cloth grille
But the most critical part, especially for bass enthusiasts, is the internal amplifier that powers the subwoofer and delivers a thunderous, controlled low-frequency response.
The Role of the Built-In Amplifier
Unlike passive speakers that rely entirely on an external AV receiver or amplifier, the BP7002 contains a built-in subwoofer amp. This design:
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Enhances bass performance independently
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Reduces the load on external amplifiers
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Maintains a compact system without the need for a standalone subwoofer
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Improves integration and timing with the other speaker drivers
The 300-watt amplifier inside the BP7002 is a Class D design, known for energy efficiency and minimal heat generation, making it ideal for in-speaker integration. This amp is calibrated to the BP7002’s internal drivers for precision tuning and optimal output.
Common Reasons for Replacing or Buying the BP7002 Amplifier
While the BP7002 remains a highly regarded speaker, the built-in amp can encounter issues over time. Reasons for seeking a replacement include:
1. Subwoofer Failure
Many users report that the subwoofer section stops working while the midrange and highs continue to perform. This is often due to amp board failure or capacitor degradation.
2. Blown or Overheated Amp
Long-term use, power surges, or overheating may cause the internal amplifier to malfunction.
3. Restoration Projects
Enthusiasts often purchase vintage or second-hand BP7002s and seek original parts, including the amp, to restore full functionality.
4. Audio Upgrades
Some choose to replace or enhance the amplifier module to match or exceed original performance using third-party mods.
Can You Buy the BP7002 Amplifier Separately?
Yes, but with some caveats.
Definitive Technology no longer manufactures or sells the BP7002 (it has been succeeded by newer models). Hence, finding a brand-new amplifier for the BP7002 is nearly impossible.
1. Used or Refurbished Amps
These are original amplifiers salvaged from non-functional BP7002 units or refurbished to working condition.
2. Custom Replacement Modules
Some electronics experts sell third-party amplifier modules designed to replace faulty BP7002 amps. These may not be identical in design but often perform similarly.
3. As-Is Units for Salvage
Some people buy whole non-working BP7002 speakers just to extract parts like the amplifier or subwoofer.
Where to Find BP7002 Amplifiers for Sale in the USA
1. eBay
AeBay offers listings for BP7002 amplifier boards, repair kits, and occasionally complete subwoofer assemblies, making it arguably the most accessible source for secondhand and reconditioned audio components. Prices range from $80 to $200 depending on condition and seller.
Search: “Definitive Technology BP7002 amplifier module”
2. HiFiShark
HiFiShark aggregates listings from various marketplaces and classifieds like Audiogon, US Audio Mart, and Craigslist. It provides alerts and history tracking for audio gear, including BP7002 components.
Visit: www.hifishark.com
3. Audiophile Forums and Communities
Online audio forums such as:
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AVSForum.com
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AudioKarma.org
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Reddit’s r/audiophile
…often have members selling parts, or offering guidance for repairs and replacements.
4. Authorized Repair Shops and Audio Technicians
Some USA-based shops specialize in repairing or refurbishing Definitive Technology speakers and may sell spare amplifier boards. Contacting Definitive Technology support for referrals may help.
What to Look for When Buying
When searching for a BP7002 amplifier for sale in the USA, it’s crucial to evaluate:
1. Compatibility
Confirm that the amp module is from the BP7002 model. Other SuperTower amps (like from BP7004 or BP7006) may look similar but could have different specs.
2. Condition
Ask for detailed photos of the board, especially capacitors and solder joints. Look out for burn marks, bulging capacitors, or corrosion.
3. Tested vs Untested
Some units are sold “as is” with no guarantee of functionality. While cheaper, this can be a gamble unless you’re comfortable with electronics.
4. Return Policy
Ensure there’s a return option in case the unit doesn’t function properly or isn’t compatible.
Can You Repair a BP7002 Amplifier?
Yes, but it depends on your technical knowledge. The most common issues reported include:
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Blown capacitors
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Faulty MOSFETs or op-amps
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Power supply failure
DIY repair kits with capacitors and instructions are sometimes available online, especially from audio forums. Alternatively, professional repair shops may charge between $100–$250 depending on the complexity.
Alternative Solutions
If you’re unable to source the original amplifier, here are some alternatives:
1. Use an External Subwoofer Amplifier
By disconnecting the internal sub and connecting it to a dedicated external subwoofer amp (like from Dayton Audio or Plate Amps), you can bypass the original amp entirely.
2. Use Powered Subwoofer
Disable the internal subwoofer and pair your system with a standalone subwoofer such as:
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SVS SB-1000
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Klipsch R-12SW
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REL T/5x
This setup might offer even better bass performance.
3. Upgrade to a New Definitive Model
If restoration proves too challenging, consider upgrading to current models like the BP9060 or BP9080X, which include improved amplifier design and Dolby Atmos support.
Pricing Guide
Here’s what to expect in the USA market for BP7002 amplifier-related purchases:
| Product / Service | Price Range |
|---|---|
| Used Original Amplifier Board | $80 – $200 |
| Repair Service | $100 – $250 |
| DIY Repair Kit | $20 – $60 |
| Entire Non-Working BP7002 | $100 – $300 |
| New Powered Subwoofer | $150 – $600 |
Final Thoughts
The Definitive Technology BP7002 amplifier is an integral part of a powerful speaker system that has stood the test of time. While it’s no longer in production, the USA aftermarket scene provides several opportunities to restore or upgrade this iconic speaker.
Whether you’re a passionate audiophile trying to fix a beloved setup or a savvy buyer looking for a performance component, finding a BP7002 amplifier for sale in the USA is very much possible with some patience and diligence.
Be cautious when buying used electronics, ensure compatibility, and weigh your options—whether that’s a direct replacement, external amp integration, or even a system upgrade. With the right approach, your BP7002 speakers can continue to provide stunning sound for years to come.
Q: Can I use a generic subwoofer amplifier to replace the BP7002’s built-in amp?
A: Technically yes, but modifications are needed. You’ll need to wire the subwoofer driver to the new amp, and ensure power and signal compatibility.
Q: How can I tell if the amplifier in my BP7002 is bad?
A: Signs include no bass output, power LED not lighting, distorted sound, or buzzing/humming noises.
Q: Is it worth repairing a BP7002 amplifier?
A: If the cabinet and other drivers are intact, then yes—repairing or replacing the amp is a cost-effective way to retain the speaker’s full potential.