ACE Field Coil 5/ST-451-S

( Brand: Ace ), ( Manufacturer Part Number: ST-451-S ), ( Model: ST-451-S ACE ), ( Part Type: Coil )

Review ACE Field Coil 5/st-451-s

The ACE ST-451-S and 5/ST-451-S are high-performance, field coil speakers designed for those seeking an authentic and rich audio experience. These speakers are part of the ACE Slim Series, which combines the classic design of field coil technology with modern convenience and versatility.

The ST-451-S and 5/ST-451-S share many similarities but come in different cabinet sizes. The ST-451-S features a compact, 12.6-inch by 8.2-inch by 6.5-inch cabinet, making it a perfect fit for smaller rooms or applications where space is limited. The 5/ST-451-S, on the other hand, boasts a larger, 15-inch by 10-inch by 6.5-inch cabinet, delivering a more powerful and immersive sound.

Both models employ the classic field coil design, where the magnet and voice coil are not enclosed in a gapless core. This results in a more direct and detailed sound, as well as an improved bass response. The speakers also feature a 1-inch dome tweeter that ensures clear and precise high-frequency reproduction.

The ACE ST-451-S and 5/ST-451-S are equipped with a 6.5-inch paper cone woofer, which is lightweight and responsive, allowing for accurate and dynamic mid-range performance. The speakers' sensitivity is rated at 89 dB, ensuring they can be driven to high volume levels with a relatively low-power amplifier.

Their impedance is 8 ohms, making them compatible with a wide range of amplifiers and receivers. Additionally, they come with gold-plated binding posts, ensuring a secure and reliable connection between the speakers and your amplifier or receiver.

The ST-451-S and 5/ST-451-S are built with a high-quality, MDF cabinet that reduces unwanted resonance and vibration, contributing to a cleaner and more accurate sound. Their vintage-inspired, wooden veneer finish not only adds to their aesthetic appeal but also helps in minimizing external reflections, improving the speakers' overall sound quality.

These field coil speakers are a great choice for audiophiles and music enthusiasts who appreciate the rich and detailed sound that comes from traditional field coil technology. Whether you're looking for a compact solution for smaller spaces or a more powerful system for larger rooms, the ACE ST-451-S and 5/ST-451-S offer a unique and authentic audio experience.

The ACE ST-451-S and its field coil variant, the 5/ST-451-S, are popular choices among ham radio operators for their excellent receiver performance. Here are some pros and cons that may help you make an informed decision about purchasing one of these receivers:

1. Superb receiver sensitivity: The ACE ST-451-S and 5/ST-451-S are known for their high receiver sensitivity, making them excellent choices for weak signal reception.

2. Wide frequency coverage: These receivers can tune in frequencies ranging from 400 kHz to 1.6 MHz, making them versatile for various Ham radio bands.

3. Adjustable gain: The adjustable gain feature allows users to optimize the receiver's sensitivity for the specific signal strength, improving overall performance.

4. Selectable filtering: The receivers offer various filtering options to help reduce noise and interference, improving signal clarity.

5. Compact size: The ACE ST-451-S and 5/ST-451-S are compact and portable, making them great for field use.

1. Limited power output: With a power output of only 2 watts, these receivers may not be suitable for long-distance communication.

2. Manual tuning: The receivers do not have a built-in digital tuning display, requiring users to manually tune in frequencies.

3. No antenna tuner: The receivers do not have an integrated antenna tuner, which may require the use of an external tuner for optimal performance.

4. Limited memory channels: The receivers have a limited number of memory channels, which may not be sufficient for some users.

The ACE ST-451-S and 5/ST-451-S are excellent choices for ham radio operators seeking a high-performing receiver with excellent sensitivity for weak signal reception. Their compact size and wide frequency coverage make them versatile for various bands. However, their limited power output, manual tuning, lack of an integrated antenna tuner, and limited memory channels may be drawbacks for some users.

If you are looking for a high-performing receiver for weak signal reception with excellent sensitivity, the ACE ST-451-S and 5/ST-451-S are excellent choices. However, if power output, built-in digital tuning, an integrated antenna tuner, or a larger number of memory channels are important to you, you may want to consider other options. Ultimately, your decision will depend on your specific requirements and priorities as a ham radio operator.

Details:

part #: st451 prices

• $19.99-$26.25

specifications vintaequip:

• brand: Ace
• mpn: St-451-s
• model: St-451-s Ace
• part type: Coil

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general vintaequip:

• Heavy Equipment, Parts Attachments > Heavy Equipment Parts Accessories > Antique Vintage Equipment Parts
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• quantity: 1
• availability: In Stock
• started: August 1, 2025
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