Epos, a British loudspeaker manufacturer, is known for its minimalist design philosophy and focus on transparency and musicality. The ES11 and ES12 models are compact two-way speakers that share some design principles but differ in technical specifications and sound characteristics. Below is a detailed comparison of these two models, with their technical specifications presented in a side-by-side table.
Technical Specifications Comparison
Feature
Epos ES11
Epos ES12
Type
Two-way, vented-box design
Two-way, reflex-loaded design
Drivers
6.5-inch cone woofer, 1-inch dome tweeter
Plastic-cone woofer, 1-inch metal-dome tweeter
Frequency Response
60 Hz to 20 kHz
Slightly extended bass compared to ES11
Sensitivity
87 dB at 1 meter (2.83 V rms applied)
Approximately 87 dB
Impedance
8 ohms nominal
8 ohms nominal
Crossover
Minimalist design with a single capacitor for the tweeter; no crossover for the woofer
Redesigned crossover with improved integration between drivers
Recommended Amplifier Power
25–75 watts per channel
25–75 watts per channel
Dimensions (H x W x D)
14.75″ x 8.375″ x 9.875″ (37.5 cm x 22 cm x 25 cm)
Similar dimensions; slightly larger cabinet
Weight
17.6 lbs (8 kg) each
Slightly heavier due to larger cabinet
Finish
Vinyl wrap
Real wood veneer
Sound Characteristics
Epos ES11
The ES11 is praised for its precise imaging and refined sound, particularly in the midrange and upper frequencies. Its minimalist crossover design enhances transparency but can result in a slightly bass-shy performance, making it less suitable for bass-heavy genres without a subwoofer. The speaker excels in smaller rooms or near-field listening setups, where its imaging capabilities shine.
Epos ES12
The ES12 builds upon the ES11’s strengths by offering fuller-bodied sound with deeper bass and enhanced dynamic range. While it retains precise imaging, the midrange can sometimes sound nasal depending on room acoustics or placement. It is better suited for larger spaces compared to the ES11.
Key Differences Between Epos ES11 and ES12
Feature
Epos ES11
Epos ES12
Bass Response
Limited, bass-shy
Fuller-bodied, deeper bass
Sound Profile
Precise imaging, refined sound
Dynamic range, fuller sound
Tweeter Type
Metal dome
Metal dome
Design Features
Minimalist crossover
Improved crossover integration, but basically still Minimalist crossover
Ideal Listening Environment
Smaller rooms
Larger spaces
Conclusion
The Epos ES11 and ES12 are excellent examples of minimalist speaker design focused on transparency and musicality. The ES11 excels in imaging and midrange clarity, making it ideal for smaller rooms or near-field listening setups. On the other hand, the ES12 offers a fuller-bodied sound with deeper bass and enhanced dynamic range, making it better suited for larger spaces or listeners who prefer more impactful low frequencies.
Choosing between these two models depends on your listening preferences and room size:
Opt for the ES11 if you prioritize precision and clarity in smaller spaces.
Choose the ES12 if you need fuller sound with better bass response for larger environments.
Both models require high-quality amplification to perform at their best, staying true to Epos’s ethos of delivering uncompromised audio performance.
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Amplifiers are the backbone of any high-quality music system, ensuring that speakers perform at their best by delivering clean, precise power. While speakers are the primary drivers of sound quality, the amplifier’s role in maintaining signal fidelity and dynamic range is crucial. This article focuses exclusively on music amplifiers, avoiding guitar amps, and highlights British brands alongside B&K amplifiers.
Why Amplifier Quality Matters
Signal Fidelity Hi-fi amplifiers are designed to reproduce audio signals with minimal distortion or coloration, preserving the original recording’s integrity.
Power and Dynamics High-quality amplifiers provide sufficient power to drive speakers effectively, especially for demanding setups. They ensure stable performance across varying volumes and dynamic shifts.
Impedance Matching Proper impedance matching between the amplifier and speakers optimizes power transfer and prevents distortion or equipment damage.
Frequency Response A good amplifier ensures balanced reproduction across all frequencies, contributing to a full and immersive listening experience.
Soundstage and Imaging Amplifiers play a role in creating a realistic soundstage, allowing listeners to perceive spatial details in the music.
British Hi-Fi Amplifiers: A Tradition of Excellence
British audio brands are renowned for their meticulous craftsmanship and balanced tonal characteristics. Here are some notable options:
Naim Audio: Known for its rhythmically engaging sound, Naim amplifiers like the Supernait 3 deliver dynamic performance with excellent bass control and upgrade potential.
Cambridge Audio: Models like the CXA81 offer detailed sound with wide compatibility, making them a popular choice for audiophiles seeking versatility.
Rega: The Elex Mk4 is celebrated for its musicality and articulate sound reproduction, ideal for mid-range hi-fi setups.
Roksan: The Caspian M2 provides rich tonality and dynamic sound, paired with robust build quality suitable for long-term use.
Chord Electronics: High-end amplifiers like the Ultima series exemplify engineering excellence with transparent sound reproduction.
B&K Amplifiers: Precision Meets Musicality
B&K Components has established itself as a reliable name in hi-fi amplification. Their products are known for their robust design and detailed sound signature:
B&K ST-140: A classic solid-state amplifier praised for its ability to retrieve low-level detail with clarity. It offers a lean sound profile that works well with systems needing precision but may feel cold in certain setups.
B&K Sonata M-200: These mono block amplifiers excel at driving difficult speakers like Martin Logan electrostatics, offering refined bass performance and articulate midrange reproduction. Their design supports passive cooling, ensuring durability during extended use.
B&K amplifiers are ideal for audiophiles seeking accuracy and musicality at accessible price points. However, careful pairing with speakers is essential to avoid accentuating their somewhat clinical sound profile.
More specifically the two amps I really love from B&K are the 125.2 (I own two) and the Ex-442.
A Report on the B&K 125.2 and EX-442 Stereo Power Amplifiers
B&K Components has long been recognized for producing high-quality stereo power amplifiers that deliver excellent sound performance at reasonable price points. This report focuses on two notable models: the B&K Reference 125.2 and the EX-442, analyzing their specifications, sound characteristics, and legacy in the audiophile community.
B&K Reference 125.2
Specifications
Power Output: 125 watts per channel into 8Ω; 185 watts per channel into 4Ω[5].
Peak Current: 30 amps[5].
Dynamic Headroom: 1.2 dB[5].
Inputs: Both XLR (balanced) and RCA (unbalanced)[1].
Design: Known for its smooth, warm sound typical of B&K amplifiers[7].
Sound Characteristics
The Reference 125.2 is praised for its smooth and warm tonal profile, making it ideal for music lovers seeking a relaxed yet detailed listening experience. Its ability to handle dynamic shifts with ease ensures that it performs well across various genres, from classical to rock. The amplifier runs relatively cool during operation, which contributes to its reliability and longevity[7].
Usage and Compatibility
This amplifier pairs well with mid-range speakers like KEF LS50s, as noted by users who appreciate its ability to drive demanding loads without distortion[1]. Audiophiles recommend using a high-quality preamp with the Reference 125.2 to avoid compromising its sonic potential[1].
Legacy
The Reference 125.2 remains a popular choice among budget-conscious audiophiles due to its performance-to-price ratio. It is often recommended as an entry point into high-fidelity audio systems, providing a taste of premium sound without breaking the bank.
B&K EX-442
Specifications
Power Output: 200 watts per channel into 8Ω; 350 watts per channel into 4Ω[2][8].
Frequency Response: 20Hz to 20kHz[2].
Peak Current: Up to 75 amps, offering exceptional dynamic capability[4].
Output Design: MOSFET-based output stage for smoother sound reproduction[8].
Build Features: Dual transformers (Sonata version), internal heat sinks, and optional XLR inputs for balanced connections[4].
Sound Characteristics
The EX-442 is celebrated for its powerful yet refined sound signature. It delivers robust bass performance, articulate mids, and smooth highs, making it suitable for both music enthusiasts and critical listeners. Its high peak current capability allows it to handle demanding speakers like Polk SDA-SRS models with ease[4]. The amplifier’s MOSFET output stage contributes to its warm and natural tonal characteristics.
Usage and Modifications
Users have reported modifying the EX-442’s power supply and capacitors to further enhance its performance. Adding high-quality film capacitors in parallel with electrolytic capacitors can improve transient response and overall clarity[2]. This amplifier is versatile enough for use in both professional and home audio setups.
Legacy
The EX-442 has been a mainstay in many audiophile systems since its introduction in the mid-1980s. Its robust design and excellent performance have ensured its longevity, with many units still in active use today. Owners often describe it as a “workhorse” amplifier capable of delivering consistent performance over decades[2][4].
Comparison of B&K Reference 125.2 vs EX-442
Feature
B&K Reference 125.2
B&K EX-442
Power Output
125WPC @ 8Ω; 185WPC @ 4Ω
200WPC @ 8Ω; 350WPC @ 4Ω
Peak Current
30 amps
Up to 75 amps
Sound Profile
Smooth and warm
Powerful yet refined
Input Options
XLR & RCA
Optional XLR & RCA
Ideal Use Case
Mid-range speakers
Demanding speaker setups
Legacy
Entry-level hi-fi
Long-standing workhorse
B&K Conclusion
Both the B&K Reference 125.2 and EX-442 amplifiers exemplify B&K’s commitment to delivering high-quality sound at accessible price points. The Reference 125.2 is ideal for those seeking a smooth, musical experience with mid-range speakers, while the EX-442 offers greater power and dynamic capability suited for more demanding setups.
For audiophiles looking to invest in reliable amplifiers with proven track records, these models represent excellent choices that continue to hold their value in the hi-fi community. Whether you prioritize warmth or power, B&K’s amplifiers deliver performance that stands the test of time.
Sources [1] How good a deal is this B&K Components LTD Reference S2 125.2 … https://www.reddit.com/r/BudgetAudiophile/comments/zbun5g/how_good_a_deal_is_this_bk_components_ltd/ [2] BK Components EX-442 Stereo Power Amplifier Manual | HiFi Engine https://www.hifiengine.com/manual_library/bk-components/ex-442.shtml [3] B&K Reference 125.2 S2 Stereo Power Amplifier – The Music Room https://tmraudio.com/components/power-amplifiers/b-k-reference-125-2-s2-stereo-power-amplifier/ [4] B&K EX-442 and ST-202+ Different – Polk Audio Forum https://forum.polkaudio.com/discussion/177349/b-amp-k-ex-442-and-st-202-different [5] B&K Reference 125.2 Series II User Manual – ManualsLib https://www.manualslib.com/manual/423424/BAndk-Reference-125-2-Series-Ii.html [6] B&K Components EX-442 Sonata Power Amplifier – The Rocket https://www.theonlinerocket.com/b-k-components-ex-442-sonata-900w-power-amplifier-fully-run-tested-RUVBGEBbU1hcXFxc [7] B&K ST 125.2 Amplifier – Polk Audio Forum https://forum.polkaudio.com/discussion/183178/b-k-st-125-2-amplifier [8] B & K EX-442 Sonata Series Owners Manual https://forum.audiogon.com/discussions/b-k-ex-442-sonata-series-owners-manual
Overall Final Conclusion
The quality of an amplifier is integral to achieving optimal sound from any music system. British brands like Naim, Cambridge Audio, Rega, and Roksan emphasize tonal precision and craftsmanship, while B&K amplifiers stand out for their power delivery and detail retrieval. When selecting an amplifier, consider its compatibility with your speakers’ impedance and sensitivity ratings to ensure synergy within your setup. Investing in a high-quality amplifier will elevate your listening experience by bringing out the best in your music collection.
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The Epos ES11 and ES14 speakers are two iconic models from the British audio brand Epos, which gained prominence in the 1980s for its minimalist yet innovative speaker designs. Below is a comparison of the two models, along with their historical context.
Historical Context
Epos was founded in the early 1980s and quickly became known for its purist approach to speaker design. The ES14 debuted as a groundbreaking model that set new standards in mid-priced hi-fi speakers. It was later joined by the smaller and more affordable ES11.
The model number can be confusing thinking the ES11 came first, but quite the opposite is true.
Both models were celebrated for their exceptional sound quality, achieved through clever engineering solutions like ultra-simple crossover networks and highly developed drivers. These speakers carved out a niche in the British hi-fi market during the 1980s and 1990s, becoming staples for audiophiles of the era[1][2][5].
Over time, Epos underwent several ownership changes, which led to newer designs that never quite captured the magic of the original models. The brand faded from prominence until its recent revival under Karl-Heinz Fink, who has modernized the ES14 as the ES14N while retaining its core design principles[1][2].
Key Differences Between the ES11 and ES14
Feature
Epos ES11
Epos ES14
Size
Compact two-way standmounter
Larger two-way standmounter
Drivers
Smaller mid/bass driver (approx. 16 cm)
Larger 18 cm mid/bass driver
Crossover Design
Minimalist (single capacitor)
Minimalist but slightly more complex
Bass Performance
Limited bass extension
Better bass extension due to larger driver
Sound Profile
Purer tonality, suited for smaller spaces
More dynamic and authoritative sound
Historical Role
Affordable entry into high-end audio
Benchmark for mid-priced hi-fi speakers
Design Philosophy
Both models shared a minimalist design ethos. The ES11 used a natural roll-off for its woofer and a single capacitor for its tweeter crossover, maximizing transparency. Similarly, the ES14 employed a simple crossover but offered more robust performance due to its larger size and driver[5][6].
Performance
The ES11 was praised for its tonal purity and suitability for smaller spaces or nearfield listening. In contrast, the ES14 delivered greater dynamics, bass depth, and overall authority, making it ideal for larger rooms or more demanding setups[7].
Legacy
While both models were eventually succeeded by newer designs, they remain cherished by audiophiles. The ES14, in particular, has been reimagined as the modern ES14N, incorporating advances in speaker technology while honoring its heritage[1][2].
In summary, the Epos ES11 and ES14 catered to different needs within the same minimalist philosophy. The ES11 appealed to those seeking compact excellence, while the ES14 offered a more commanding presence and broader performance capabilities. Both models continue to hold a special place in hi-fi history.
Sources [1] Epos ES14N review – Speakers – What Hi-Fi? https://www.whathifi.com/reviews/epos-es14n [2] Revitalised Epos resurrects legendary ES14 speakers … – What Hi-Fi? https://www.whathifi.com/news/revitalised-epos-resurrects-legendary-es14-speakers-with-a-modern-twist [3] Archives: Articles – Hi-Fi+ https://hifiplus.com/articles/page/15/ [4] Where does the Epos ES14 stand vs modern equivalents? https://community.naimaudio.com/t/where-does-the-epos-es14-stand-vs-modern-equivalents/1092 [5] Epos ES12 loudspeaker – Stereophile.com https://www.stereophile.com/standloudspeakers/497epos/index.html [6] Epos ES-11 to Epos M12.2 ? – ecoustics.com https://www.ecoustics.com/electronics/forum/home-audio/309152.html [7] Epos es11 or es 14 – Hi-Fi 4 Sale https://www.hifi4sale.net/t13624-epos-es11-or-es-14 [8] Epos Acoustics ES11 – Audiophillness.com https://audiophillness.com/epos-es11-sn15151/
Posted inSpeakers, Vintage Audio|Comments Off on comparing the EPOS ES11 vs. ES14 with YouTube video
A thrift-store score $7, I believe they are made from MDF, painted white with pretty good drivers and a solid weight to them considering how small they are.
Video from my YouTube channel is linked here:
Posted inSpeakers, Vintage Audio|Comments Off on Cambridge SoundWorks Ensemble speaker 1988 – Quick Review
New CD Players that sound good, meaning Audiophile quality sound or close to it, also cost a lot of money, even when you adjust for any inflation comparing costs in the 80s vs now / anyways, I think many are simply too expensive.
You can get a much better deal buying used if you are willing to take some small risks and you are handy with some analysis and repair.
below is my YouTube video showing the Repair, in my case it was just to clean the old belts and install 2 new ones – that’s it.. after that everything worked.
In my case, I found this CD player for $8 and bought 2 new belts for $12 / so the total cost was about $20.. It has a great DAC chip (Burr-Brown PCM56P DAC).
these CD players are still relatively cheap on Ebay, but it is a risk that you would have to take, maybe needing just the belts replaced for the most part and maybe some additional lubrication.
Reviving the Past: The Benefits of Restoring Older CD Players
In an era dominated by digital music streaming services, it’s easy to overlook the joys of owning and playing physical media, particularly CDs. However, for those who cherish their vinyl collections or have fond memories of listening to CDs in the past, restoring an older CD player can be a great way to breathe new life into these beloved devices.
The Benefits of Restoring Older CD Players
While buying a new CD player may seem like an attractive option, there are several benefits to restoring an older one. Here are some reasons why:
Environmental Benefits: Buying a new CD player requires resources and energy, contributing to waste and pollution. By restoring an older unit, you’re giving new life to a device that would otherwise be discarded.
Cost-Effective: Restoring an older CD player can be significantly cheaper than buying a brand-new one. This is especially true if the original unit was purchased at a lower price point or has been well-maintained over the years.
Collectibility and Sentimental Value: For music enthusiasts who collect vintage CDs, restoring an older CD player can be a labor of love. It allows you to preserve memories associated with the device and its original use case.
Repairing and Upgrading: Restoring an older CD player provides an opportunity to repair any issues or upgrade the unit’s components. This ensures that the device continues to function optimally, providing years of reliable service.
The Process of Restoring an Older CD Player
Restoring an older CD player requires some technical knowledge and patience. Here are the general steps involved:
Assess the Condition: Evaluate the condition of the unit, including any cosmetic damage or mechanical issues.
Disassemble and Clean: Carefully disassemble the device to clean out dust, dirt, and other debris that may be affecting its performance.
Replace Damaged Components: Replace worn-out or damaged parts with new ones, such as capacitors, resistors, or ICs.
Refurbish the Unit’s Exterior: Clean and refurbish the unit’s exterior to restore its original appearance.
Conclusion
Restoring an older CD player can be a rewarding experience for music enthusiasts who value nostalgia and preservation. Not only does it offer environmental benefits and cost-effectiveness, but it also provides an opportunity to repair and upgrade the device to extend its lifespan.
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A new addition to my equipment collection! These sold originally for $1,995 + tax + shipping, but I managed to find them locally for $400 used / they come with their metal grills, but I took them off for listening – they are great for protecting these while not used or when moving!
Extremely well build, solid cabinets that pass the knock test!
Speaker: M22 Type: Two-and-a-half-way, tower Tweeter (size in inches, type): 1, gold anodized aluminum alloy dome Midrange (size in inches, type): 6, polymer cone 5.25 Woofer (size in inches, type): 6, polymer cone Nominal Impedance (ohms): 6
Recommended Amp Power (watts): 50–200 Available Finishes: Light/Dark Cherry, Black Dimensions (H x W x D, inches): 36 x 8 x 10 Weight (pounds): 37.4 Original Price: $1,995/pair
I paired them with a B&K 125.2 amp / sometimes I switch and listen using the B&K EX-442 amp (if you ever find this, grab it fast!) – anyways, both are excellent amps!
I do have the EPOS ELS Subwoofer installed, so it is paired with that as well… I was lucky enough to find that one day in the market-place for $150 / extremely well build sub-woofer specifically made for music!
These speakers shine with Jazz, and other instrumentals, Classical, and Voice!
I have to admit that I am already used to the EPOS sound since I own 6 other speakers in my collection and these don’t disappoint, very well made, high quality with excellent drivers!
You will not find anything like that made today within any price range!
So if you are lucky enough to find some used for a fair price, grab them!
In the last Blog I did a video on how to use AI basically to learn anything you want about beer brewing, but you can also paste your ingredients and ask AI to take a look at them to analyze.
The analysis asks can be anything, from the right grain proportions to maybe unnecessary grains that don’t do anything or might impart on your recipe.
So that’s what I did, I first asked it to review the Grains, then the Hops and last the yeast.
It compared everything against each other to recommend any changes for the Style of the beer that I am after. Now, of course, I did fact-check the recommendations and everything it recommended sounded fine to me and it even explains why.
With that this weekend of 10.19.2024 I have brewed the the following IPA / this is for a 5-gallon batch.
Grains:
9lb 2-row
0.5 lb Carapils
Hops:
2 ounces of El Dorado (bittering at 60 minutes)
3 ounces of Mosaic (Whirlpool)
3 ounces of Cascade, also (Whirlpool) – so last 10-15 minutes
Yeast:
1056 American Ale Wyeast
pictures and final tasting thoughts will come later with an Update, thanks!
So this is a Quick introduction in the llama3.1 or 3.2 models which you can easily download and install on any computer (Windows, Mac or Linux) and the interface is very easy to use.
Wanted to do something new and more interesting than just posting another Beer recipe, since those are a dime a dozen.
So whether you are someone who hasn’t learned yet about AI for your job-related tasks or maybe you are retired and don’t pay attention to any of it, you really should because it can make the hobby of your Beer brewing a lot more interesting and can make great improvements to your recipes and understanding of ingredients.
So in case you haven’t seen in my recent posts, I have acquired a few picobrew machines / the original Zymantic and the Z1 and also a picostill (which I plan to use to make extracts with). Sadly the company is no more, but happily – you can score these machines for a fraction of their original price. I paid $200 for all, and this probably cost close to $4,500 for all that I have acquired in this deal.
I have setup the Raspberry Pi to act as a local server for these, so they no longer need to connect to the corporate web servers to make them run, $75 cost.
So now I store all my recipes online, as they sync and import into the machines using this new software tool, but regardless, you can use them using any equipment following the recipe.
Actually the yeast I used was: 1968 London ESB Wyeast
having these machines will save me quite a bit of time because you just put in your ingredients and press Brew, come back 5 hours later and you just cool (10 minutes at best ) and pitch yeast.
It also will give me smaller batches and more variety as I drink less beer these days, so ya!
Update – I used AI software (ollama model) to inspect the recipe, and it came out really good, I also wanted to dial is the perfect color of the beer:
Posted inBEER Home Brewing|Comments Off on English Brown Ale – brewed by a robot
I have acquired some picobrew machines cheap / the original Zymantic, the Z series and even a new picostill. The Zymatic had [past tense 🙂 ] a leak, because the original seal that connects the internal bucket to the pump cracked over time, silicone don’t last forever.. This would create two issues:
a pretty substantial leak anytime the pump wasn’t working
slow pump return
I took some quick measurements and 3d designed a better than original fix, it was 3d printed in TPU.
I have linked to the part that is available to download and a youtube video so you can see it in action, thanks!
