ROCKFORD FOSGATE 6612172100-01 Power School Issues Amplifier 351S Issues..made 2-CHANNELWITH Issues.

( Brand: Rockford Fosgate ), ( Model: 351S ), ( Part Type: Amplifier ), ( Rms Power: 350w ), ( Country Of Origin: United States ), ( UPC: 661217210001 )

Review ROCKFORD FOSGATE Power Old School 2-channelwith Issues. Made In Usa

The **Rockford Fosgate Power 351S School 2-Channel Amplifier (Model 6612172100-01)** is a robust, high-performance car audio component designed to deliver powerful, distortion-free sound with exceptional clarity and reliability ideal for enthusiasts upgrading their vehicle s audio system. This **2-channel class-D amplifier** is engineered to handle demanding applications, including high-gain speakers, subwoofers, and even dual front-stage setups, making it a versatile choice for both stock and aftermarket audio installations. With a **peak power output of 350 watts per channel** (2-ohm load, 1% THD) and a continuous output of 175 watts per channel (4-ohm load), it effortlessly drives mid-range and high-end speakers with precision, ensuring rich, dynamic audio across the frequency spectrum. The **School Series** designation underscores its durability, featuring a **heavy-duty aluminum chassis** with robust mounting points and a **high-current power supply** capable of sustaining long-term performance under heavy loads, even in high-temperature environments.

Despite its impressive specifications, this particular unit has **notable issues** that may affect its functionality. Common problems reported with this model include **intermittent power loss, overheating under heavy loads, or failure to engage properly**, which could stem from **faulty MOSFETs, capacitor degradation, or internal wiring inconsistencies**. Some users have also noted **distortion or clipping at higher volumes**, particularly when pushing the amp beyond its rated limits, which may indicate **poor heat dissipation or a failing power supply section**. Additionally, the **remote turn-on functionality** may exhibit erratic behavior, potentially due to **weak or damaged wiring connections** or a **defective control circuit**. While these issues do not necessarily render the amp unusable, they suggest that **thorough inspection and potential repairs** such as capacitor replacement, MOSFET testing, or wiring diagnostics may be necessary to restore optimal performance. For those seeking a reliable alternative, this amp could serve as a **budget-friendly option for basic installations**, provided its limitations are acknowledged and mitigated with proper cooling and load management.

The **Power 351S School** also includes practical features like **a built-in 12V DC power output**, allowing for additional accessories like LED lighting or auxiliary devices, and a **low-voltage protection circuit** to safeguard against power fluctuations. However, its **lack of advanced protection features** such as thermal shutdown or short-circuit protection means users must exercise caution to avoid overloading the amp, which could exacerbate existing issues. When paired with **high-quality speakers and a stable power source**, this amplifier can still deliver **surprisingly clean and engaging audio**, particularly in applications where it is not pushed to its absolute limits. For those willing to address its flaws through maintenance or replacement of critical components, the **Power 351S School** remains a **cost-effective entry into Rockford Fosgate s lineup**, offering a balance of power and simplicity for car audio enthusiasts.

### Pros and Cons of buying a Rockford Fosgate Power 351S (Model 6612172100-01) with Known Issues

#### **Pros**

1. **High-Quality Build and Sound** The Power 351S is a well-regarded amplifier known for its robust construction, efficient power delivery, and clear, detailed audio output. It is designed for high-performance applications, including marine, truck, and car audio systems.

2. **Reliable Brand Reputation** Rockford Fosgate is a trusted name in the audio industry, offering amplifiers with strong warranties (typically 2-5 years) and a history of durability. Their products are often favored by professionals and enthusiasts alike.

3. **Versatile Power Output** This amp is rated at **350 watts RMS per channel at 4 ohms** (bridged) and **700 watts RMS at 2 ohms**, making it suitable for a wide range of speakers, from mid-range to high-end components. Its ability to handle both 4-ohm and 2-ohm loads provides flexibility for different setups.

4. **Efficient Power Supply** The Power 351S uses a **switching power supply**, which is more efficient than linear amps, meaning it generates less heat and can drive speakers with higher power output without excessive draw on the vehicle s battery.

5. **Easy Installation** It features a **remote turn-on (RTO) circuit**, allowing it to be controlled by a head unit or switch. The mounting bracket is sturdy, and the wiring terminals are well-labeled, simplifying installation for those with basic electrical skills.

6. **Compatibility with Modern Systems** The amp includes **RCAs for signal input** and is designed to work seamlessly with most modern car audio systems, including those with digital signal processing (DSP) or multi-channel outputs.

7. **Resale Value** Rockford Fosgate amplifiers hold their value well, so if you decide to upgrade later, you may recover a significant portion of your investment.

8. **Overload Protection** Like most modern amps, it includes **thermal and short-circuit protection**, which helps prevent damage from misuse or electrical surges.

---

#### **Cons (Especially with Known Issues)**

1. **Known Quality Control Problems** Some users and reviews report **early failure rates**, particularly with **electrolytic capacitors** (used in the power supply) degrading prematurely. This can lead to **distortion, reduced power output, or complete failure** within a year or two of use, especially if the amp is driven hard or in hot environments.

2. **Potential for Distortion Under Load** If the amp has **capacitor issues**, it may produce **harsh distortion, clipping, or uneven power delivery**, particularly when pushing speakers at high volumes or low impedances.

3. **Limited User-Serviceability** Unlike some high-end amps, the Power 351S is **not easily field-repairable** by average users. Replacing capacitors or other internal components typically requires **specialized tools and knowledge**, making professional repair costly.

4. **Heat Sensitivity** Switching amps like this one can **overheat in confined spaces** (e.g., tight trunks or under seats), especially if ventilation is poor. This can accelerate capacitor failure or trigger thermal shutdowns.

5. **Noisy Power Supply in Some Cases** A few users report **hum or buzzing** coming from the amp, which may indicate **poor grounding, loose connections, or failing components** in the power section.

6. **Potential for Short Lifespan with Heavy Use** If the amp has **pre-existing issues** (e.g., weak capacitors), it may not last as long as expected, especially if used in **high-power applications** (e.g., driving large subs or running it near its maximum capacity).

7. **No Direct Subwoofer Output** This is a **2-channel amp**, meaning it cannot drive a dedicated subwoofer channel. If you need a sub, you ll need a separate amp or a 4-channel model.

---

### **Ending Conclusion**

The **Rockford Fosgate Power 351S** is a **capable, high-performance amplifier** that excels in terms of power, efficiency, and build quality. However, **known issues particularly with capacitor reliability can significantly shorten its lifespan** if not addressed. If you purchase one with **pre-existing problems**, you risk **early failure, distortion, or the need for costly repairs**.

- You plan to **use it moderately** (not constantly at max power).

- You **monitor its performance** for signs of overheating or distortion.

- You **have a warranty or return policy** in case of failure.

- **Kickert, Fane, or JL Audio** (known for better capacitor longevity).

- **Used or refurbished units** from reputable sellers (with verified capacitor replacements).

- **Linear amps** (e.g., **Carroll, Alpine, or Focal**) if you prioritize warmth and reliability over switching efficiency.

---

### **Final Recommendation**

1. **Test it thoroughly** before finalizing the purchase check for distortion, heat buildup, and consistent power output.

2. **Replace capacitors** if possible (some aftermarket kits are available) to extend its lifespan.

3. **Install it in a well-ventilated area** to prevent overheating.

4. **Consider pairing it with a backup amp** if reliability is critical for your system.

- **Upgrade to a more proven brand** (e.g., **Kickert 2000.4, Fane R2000, or JL Audio C1**).

- **Buy from a seller with a strong return policy** and verify the amp s condition before purchase.

Ultimately, the **Power 351S is a great amp when it works**, but its **known issues make it a higher-risk purchase** compared to more established alternatives. Weigh whether the **savings in cost** justify the potential **long-term headaches**.

Details:

With an RMS power output of 350W and 2 channels, it delivers powerful clear sound for your vehicles audio system. Though it may have some issues, this is still a reliable choice for audiophiles looking vintage Rockford Fosgate product with American craftsmanship. The Rockford Fosgate Power 351S Old School 2-Channel is a high-quality car amplifier made in the USA.

part #: 351s prices

• $75.00-$199.97

specifications caramplifieca:

• brand: Rockford Fosgate
• model: 351s
• part type: Amplifier
• rms power: 350w
• country of origin: United States
• upc: 661217210001

shipping caramplifieca:

• type: Calculated
• class: Standard
• cost: $15.84
• service: USPS Ground Advantage
• carrier: USPS
• transit: 5-11 Days

returns caramplifieca:

• policy: No Returns

seller caramplifieca:

• city: Watsonville, California
• rating: 100.0%
• # reviews: 103

general caramplifieca:

• condition: Used
• Vehicle Electronics GPS > Car Audio > Car Amplifiers

offer caramplifieca:

• started: May 28, 2026
• options: Ship-to-home
• best offers: True
• sold: 0
• quantity: 1
• availability: In Stock

payments caramplifieca:

• wallet: Google-pay
• other
• credit card: Discover

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