Vera-Fi Audio LLC
Vanguard Caldera 10 Duality
Vanguard Caldera 10 Duality
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Product Description
Product Description
This is a bundle of Vanguard Caldera 10 Active Subwoofers containing 2pcs for 10% OFF.
Powerful, Refined Bass at a Friendly Price
Low frequencies are the foundation of a full-range audio experience. Whether you're extending the low-end performance of your stand-mount speakers, adding punch and clarity to your tower setup, or bringing cinematic bass to your home theater, the Vanguard Caldera 10 delivers real-world high-fidelity performance at a price that won’t break the bank.
Deep, Controlled Bass Without Compromise
At the core of the Caldera 10 is a 10-inch driver powered by a high-quality Class A/B amplifier with a robust toroidal transformer linear power supply. This combination ensures clean, powerful bass response, reaching down to 30Hz (-3dB) and 27Hz (-6dB). The high-aspect-ratio laminar flow slot vent eliminates chuffing, delivering smooth, distortion-free bass with every note.
Effortless Integration into Any System
The Caldera 10 is designed for maximum versatility, offering both speaker-level and line-level inputs, allowing seamless integration into any system. Adjustable gain, frequency response, and phase reversal give you full control to fine-tune the subwoofer to match your speakers and room acoustics.
Sleek, Compact, and Built for Real-World Performance
Encased in a sleek black cabinet with beveled edges and an etched finish that catches light like textured steel, the Caldera 10 blends effortlessly into any environment. Its compact footprint (13” W x 15” H x 16” D) allows for flexible placement without sacrificing performance.
Key Specifications:
- Driver: 10-inch high-excursion woofer
- Amplifier Power: 175w Peak Power (High-quality Class A/B with toroidal transformer)
- Frequency Response: 30Hz (-3dB), 27Hz (-6dB)
- Dimensions: 13" W x 15" H x 16" D
- Inputs: RCA line-level and 5-way binding posts for speaker-level input & pass-through
- Finish: Black cabinet with etched texture
Experience the Vanguard Caldera 10 and hear what real, uncompromised bass sounds like—powerful, refined, and built to perform at a realistic price.
Priced at Just $199
Perfectly paired with the Vanguard Scout, the Caldera 10 offers unmatched performance and value. Try it for yourself—backed by Vera-Fi Audio’s 30-day money-back guarantee.
Looking for a deal? Ask us about our B-stock units, featuring minor cosmetic imperfections but the same uncompromising sound.
Specifications
Specifications
Driver: 10-inch high-excursion woofer
Amplifier Power: 175w Peak Power (High-quality Class A/B with toroidal transformer)
Frequency Response: 30Hz (-3dB), 27Hz (-6dB)
Dimensions: 13" W x 15" H x 16" D
Inputs: RCA line-level and 5-way binding posts for speaker-level input & pass-through
Input Impedance:
Finish: Black cabinet with etched texture

I previously had a sub woofer that had come from a home cinema setup. Whilst it gave me extra base it was 'boomy' and limited in it's range. The Caldera 10 is a different experience altogether. I'm hearing bass on some recordings that I didn't know was there and it has firmness that I'd not heard before. It's extremely good value and a great addition to my system.
I purchased three Caldera 10's to go with my three pairs of Scouts. I love them, so I purchased 4 more to get small rooms 2.1 & large rooms a 2.2. I love speaker systems but I haven't had a good set up for years. I looked into this for months. I didn't know what my sound system was missing till I got the lower end filled in.
I had my eyes on a Caldera 10 subwoofer for quite a while before I decided to take the plunge, but I'm really glad that I did. I initially had reservations for how low the price was for what it claimed it could do, but eventually a sale came along that was a little too good to resist and I purchased it for $149.
I imagine myself and quite a few other people ended up ordering around this time and it took some time before my order was fulfilled. Additionally, there were significant delays in shipments due in part to ongoing changes to US import policies, but Vera-Fi diligently kept me updated throughout the process, even responding to my emails I sent with questions. In hindsight, I am glad I was patient and waited to receive mine.
Though it took some time, in the end, I received a cute little compact subwoofer to pair with my budget living room setup and have been very pleased with how musical and quick it is, as well as how much it filled out and enriched the music for a pair of smaller bookshelf speakers. I don't think there is a better budget sub for a 2.1 stereo setup for this price. The Caldera 10 is a product that knows what it is and does it damn well.
Highly Recommended.
Excellent, tight, fast and very muscular. Punches above it’s price point. Paired with Scout’s
Solid performer. Plays well with my Elac Unifi speakers.
Good value. Pleasure to do business with.
I'm really enjoying this dual sub set-up. Using these in a two channel stereo system, replacing a single 12" sub (which was stashed in the corner). My mains are the KEF LS50 meta's, and they work well with the Caldera 10's. Still fine tuning the crossover freq & volume balance, but I'm prone to tweaking things just for the fun of it.
The Caldera 10's arrived in fine fashion, and were easy to set up. They look great and sound even better.
A solid little sub for the price. Its compact size makes it easy to place multiples in a room to help manage standing waves. The "auto-on" feature is practically useless—at low listening levels the sub won’t engage, and when you raise the volume it starts switching on and off in time with the music until it’s loud enough. I just leave it on all the time, which isn’t a big deal since the small amp only draws about 3 watts at idle. The inclusion of high-level inputs is a nice bonus at this price point, and the crossover slope is steep enough to blend seamlessly.
Absolutely clean and powerful little unit.
Caldera 10 Duo paired with Magnat monitor supreme. They blend well, have great audio quality, nice looking & hefty build. My system sounds beautiful. I have the calderas set just over 1/4 volume and the bass is vibrating the gutters on my house.
I guess I happened to order as everyone else realized the bang for your buck deal Vera-fi is offering here. I had to try and be patient and wait for the backorder to be fulfilled. As I waited I recieved excellent communication from Mark and his crew.
I wouldnt hesitate to refer a friend.
Im super happy 🤘😁🤘
Thanks Vera-fi !!!
Caldera 10 Reviews on YouTube
Nemo Propaganda
This $199 Subwoofer Sounds TOO Good for the Price!? Vanguard Caldera 10" Subwoofer Review!
Zero Fidelity
A Crazy Good, AFFORDABLE Audiophile Subwoofer!
GenerationBehindHIFI
A Look Inside The Vera-Fi Audio Caldera 10 Subwoofer - It's good! Really good!
TONEAudio
VERA-FI Caldera 10 Subwoofer Quick Look
The Listening Chair with Howard Kneller
Steven Stone reviews Vera-Fi Audio's $199, 10-inch Caldera Subwoofer!
Articles about Caldera 10
ecoustics
Pair the Scout with the Caldera 10, and you have a high-value sub/bookshelf combo for under $500
Headphone Guru
Caldera 10" wins 2024 Subwoofer of the Year awarded by Headphone Guru
Positive Feedback
The Vanguard Caldera 10 is literally the giant killer
Sound Stage! Access
This little box put out impressively large-scale sound.
Tone Publications
You’ll be impressed with how much this little sub can truly offer in terms of total system musicality.
Stereo Times
This sub is quite musical, far from a boom-boom box; it renders with a musical heart.
HiFi Audio Guru
The Caldera 10 actually increased the soundstage, giving the deep resonance that accompanies a massive hall.
Positive Feedback
A Follow-up on the Vanguard Caldera 10 Subwoofer: Dual Subs Now Equals Double the Fun!
Frequently Asked Questions (FAQs)
What is the Vanguard Caldera 10" Active Subwoofer?
The Vanguard Caldera is a 10-inch active subwoofer designed to produce low frequencies for a full-range audio system, adding more bass to your setup. The Caldera 10 is designed to provide bass enhancement for your audio system for frequencies below 120 Hz. There are built in adjustable frequency and amplitude controls for your own customization of the sound.
Where should I place the Vanguard Caldera in my room?
It can be used in a corner or center-loaded position. Experiment with placement to achieve the best bass response in your room.
Is the Vanguard Caldera compatible with any speaker system?
Yes, it is designed to integrate seamlessly with various speaker systems to enhance low-frequency performance.
How do I connect the Vanguard Caldera to my existing audio setup?
Yes, it can be used alongside other power conditioning devices like SnubWay and Swiss Digital Fuse Box to further enhance your system's performance.
What kind of improvements can I expect in my audio system?
Experts and users have reported that the Caldera 10 subwoofer enhances the rhythm and pace of bass-heavy music, providing a more immersive listening experience.
Where can I find Vera-Fi Audio warranty information?
You may find information about warranty here.
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"First, I'd like to thank **Mr. Ace**. He was a great help with the delivery.
The **SnubWay - Noise Defender** has enhanced the audio system. A new level of sophistication has been added to the system, which was previously a straightforward 'Main Stream' setup.
Firstly, I feel like the **soundstage is wider**.
And I feel like it has captured the **subtle vibrations and noise**.
Frankly, I had been briefly tempted by Chinese-made products due to their price advantage.
However, **vera-fi-audiollc** clearly demonstrated the **technical gap** between those products and this one.
Thank you."
This is my first Hi-fi set of speakers I have ever bought. Before this, I listened to BOSE speakers.
WOW.... what an upgrade these Vanguard scout speakers are!!
I had to wait a couple months to get my order (because of tariffs), but Mark and his team were really amazing at answering all of my questions and updating me with the progress of my order.
I ordered the Caldera 10 sub, vera-link amps, and the scouts and Mark helped me to understand how to plug the vera-links bluetooth amps into the subwoofer through the high-pass input and output through the high-pass directly to the right scout speaker and it works like a charm! I couldn't be happier!
You will see two pics in my review of the back of the right vanguard scout speaker, because I wanted to show you that if you have to peel the velcro off of your speaker and place it elsewhere, it doesn't leave any residue to clean up! It's not a huge deal, but it certainly made my life easier.
I am a fan for life and will be ordering some of the new things they are working on in the future!
I purchased three Caldera 10's to go with my three pairs of Scouts. I love them, so I purchased 4 more to get small rooms 2.1 & large rooms a 2.2. I love speaker systems but I haven't had a good set up for years. I looked into this for months. I didn't know what my sound system was missing till I got the lower end filled in.
Great speakers, right in my budget. I purchased one pair, broke them in, loved them, and then purchased 2 more pairs. I had the option of ceiling speakers but bookshelf sound so much better. The Scouts allowed me to get great sound and budget. I have them in several rooms now. 2.2 in the main rooms and 2.1 in the small rooms. When connecting a Caldera 10 it was suggested to put a HPF 70h on the Scouts. I haven’t been able to find a good low cost 70h, closest so far is 80h $25. I purchased (3) pairs of Scouts and (7) Caldera 10. So HPF is important to focus more on the mid and high’s. Really really like Vera-Fi Scouts and Caldera’s!!!
Great product , great prices and good follow up when required.
Good price, looks great, well made -suits the scouts perfectly
I had my eyes on a Caldera 10 subwoofer for quite a while before I decided to take the plunge, but I'm really glad that I did. I initially had reservations for how low the price was for what it claimed it could do, but eventually a sale came along that was a little too good to resist and I purchased it for $149.
I imagine myself and quite a few other people ended up ordering around this time and it took some time before my order was fulfilled. Additionally, there were significant delays in shipments due in part to ongoing changes to US import policies, but Vera-Fi diligently kept me updated throughout the process, even responding to my emails I sent with questions. In hindsight, I am glad I was patient and waited to receive mine.
Though it took some time, in the end, I received a cute little compact subwoofer to pair with my budget living room setup and have been very pleased with how musical and quick it is, as well as how much it filled out and enriched the music for a pair of smaller bookshelf speakers. I don't think there is a better budget sub for a 2.1 stereo setup for this price. The Caldera 10 is a product that knows what it is and does it damn well.
Highly Recommended.
Caldera 10 Duo paired with Magnat monitor supreme. They blend well, have great audio quality, nice looking & hefty build. My system sounds beautiful. I have the calderas set just over 1/4 volume and the bass is vibrating the gutters on my house.
I guess I happened to order as everyone else realized the bang for your buck deal Vera-fi is offering here. I had to try and be patient and wait for the backorder to be fulfilled. As I waited I recieved excellent communication from Mark and his crew.
I wouldnt hesitate to refer a friend.
Im super happy 🤘😁🤘
Thanks Vera-fi !!!
When I added the LNBH and SSZ to my system, I installed them together, so it’s impossible for me to separate their individual contributions. After a long run-in period, the changes became so compelling that I found myself staying up late, revisiting every song I’ve ever loved.
One of the most striking improvements was the disappearance of noise-related limitations. With these two in place, details that were previously buried in the mix became clearly audible. I could hear the subtle sounds of a vocalist taking a breath or even swallowing, which added an incredible sense of realism to the performance.
The overall imaging feels more precise, with every element in the soundstage locked in place. Music flows effortlessly, and the presentation is so engaging that it’s hard to step away from the listening chair. This pairing improved the technical side of my system while also bringing a level of musical connection that keeps me listening for hours.
I recently replaced the stock fuses in both my SSZ and Tempus PSU with the Graphene Sluggo.
Even at the start there was a sense that something had shifted, but this is not the kind of upgrade that shows everything in the first hour. In my case it really came into its own after about 300 hours. The first 50 hours the treble had a slightly tighter character and the mid-bass felt restrained. Around 150 hours the presentation started to relax, with better flow and more natural layering. By 300 hours dynamics felt settled, micro-details became more apparent, and the whole system sounded more connected.
What stood out most to me was the neutrality and transparency. It does not push the tonal balance in any direction, it simply lets the system speak for itself. Highs extend cleanly without harshness, keeping fine texture and air. The midrange has a natural presence with good retrieval of subtle detail. Bass is well controlled, evenly weighted, and separated with clarity.
On the SSZ, highs became smoother while keeping resolution, and the soundstage felt more open in both width and depth. Vocals gained more dimensionality compared to the stock fuse. On the Tempus PSU, tonal balance stayed consistent, but resolution improved across the range, making instrument separation easier to follow.
Mark at Vera-Fi has been great to talk to. Every question I asked was answered with detail and warmth, which made the whole experience more positive.
After this I plan to gradually replace all the fuses in my system with the Graphene Sluggo. For anyone using SSZ or Tempus PSU who wants more resolution and detail without altering the system character, this could be worth considering.