Tahsin Sevgel
Audio Devices
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M3 "Plenum"
- 2 driver 2 way simple design
- Full filled medical grade acrylic shells, made from hardest UV earmould Shell Material to most durable result.
- Used full-sized audio grade film capacitors
- Special audio grade internal wiring.
- Silver and gold added audio grade soldering
- "Plenum" technology, open acoustic system.
- Metal frequency shaping element for bass driver.
- Direct injection technology for treble driver.
- Proudly home made in Hisar Village by Tahsin SEVGEL.
MSRP: 2400 USD
Includes:
2 times Ownership Transfer Programme(OTP)
With the Ownership Transfer Program, it is possible to sell your M3 "Plenum" on the second-hand market. A product can be transferred to a new owner up to two times. The ownership transfer fee is $500 for each transfer. I only need evidence of destruction (video or photograph) from the previous owner. Creative destruction ideas may be rewarded with an extra discount.
Some discounted products may not be eligible for the Ownership Transfer Program. Therefore, before purchasing a used M3 "Plenum," please confirm with me!
2 times Future Upgrade Programme (FUP)
With the Future Upgrade Program (FUP), you can purchase a new upgrade for the M3 "Plenum" at a discounted price. The discount rates for the M3 "Plenum" are as follows:
75% within 2 years of purchase ($1,800)
50% after 2 years and up to 5 years ($1,200)
A customer can use the FUP twice for an M3 "Plenum." There is no need to provide evidence of destruction, and customers can continue using their previous product.
Customers who purchase a pre-owned M3 "Plenum" can also take advantage of the FUP. However, the FUP eligibility period begins from the first owner's purchase date.
Development History of M3 "Plenum"
After launching the Model 2, I received feedback from users. While the M2 was successful among musicians, it didn’t perform as well with audiophiles. The main issue was the bass range. Additionally, producing the M2 was a challenging task for me, requiring significant time and effort.
At the beginning of this summer, I decided to create a new product that could be more popular among audiophiles. The idea started with improving the bass range, so I decided to use dedicated modern dual bass drivers. I also added more advanced drivers, resulting in my first prototype with six drivers.
The 6-driver prototype was decent but not outstanding. Ironically, it was extremely difficult to build. The drivers, full-sized crossover components, fragile wiring, natural resin treatment, and other complexities made it a daunting process. In the end, I gave up on the 6-driver version and began searching for a game-changing idea again.
“Good artists copy; great artists steal.” Pablo Picasso
While searching for a dynamic driver solution, I came across a highly promising concept in the industry called "open acoustics." I built a prototype based on this concept, using only two BA drivers. The result was stunning, revealing significant potential that could be easily unlocked. After several fine-tuning trials, the M3 was finally ready.
What Is the "Plenum" Concept?
"Plenum" means a space completely filled with matter.
At "Plenum" concept;
Plenum: A cavity where sound is blended, shaped, and transferred to the ear canal. Its large-diameter cavity helps reduce boundary friction in the sound flow, offering exceptional compressibility.
The Metal Sound Shaping Element on the bass driver ensures the target frequency response is achieved from a single bass driver without energy loss or distortion.
The Direct Injection Treble Driver, a modern, precisely positioned, and angled balanced armature, is designed to fire sound directly into the ear canal exit. Thanks to its compact size, this precise positioning is made possible for optimal performance.
With all these features combined, the "Plenum" concept works efficiently and flawlessly.
Tuning Philosopy of M3 "Plenum"
With the M2, the focus was primarily on the details of music rather than its passion. As a result, the M2 became popular among on-stage musicians rather than experienced listeners.
For the new product, I aimed to target that group of listeners. With its satisfying bass and tonality, the M3 can easily captivate even the most jaded or weary listener, delivering top-of-the-line technical performance.
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