Post by belbo on Aug 19, 2020 21:44:39 GMT 12
Interesting new speakers, collaboration between 47 Labs and MarkAudio, essentially incorporating a mono Gaincard amplifier into a relatively small enclosure with the 3" Alpair5v3 single driver by MarkAudio (uses magnetic fluid suspension?!). There is an optional linear power supply with a hand-wound transformer. Price is 128,000 Yen. Fantastic choice in my view for a small room/computer-based system. Information only in Japanese unfortunately but I've (auto)-translated below (sorry for the poor translation but I thought it was interesting).
NC5Duo Active has developed an unprecedented active speaker in collaboration with 47 Laboratories to challenge how much the extremely delicate reaction of The Alpair5v3SS can be reflected in the sound. It is a new world audio device equipped with a mono amplifier that has been modified with "4706Gain Card" independently left and right. The transformer can be driven by a 24V switching power supply.
For those who want further sound quality, we have prepared a linear power supply of EI core transformers carefully wound by KKVox Kenneth Wong one by one by hand.
When I brought the prototype model to the audition room of Music Notomosha for photography, the reaction of the editorial department started with "the speaker disappears and the sound emerges", and "Can you leave it because I want this to be a monitor speaker for the near field of the stereo magazine?" And the audition was done at the request from the audition person in charge.
Especially kenneth Wong's transformer power supply and the sound made by the IZUMI of the 47 laboratory sounds great. Please listen to it by all means.
Solid black cherry and solid walnut
Alpair5v1 (released in 2010) was a single suspension (damperless) using magnetic fluid, but alpair5v3 was a very challenging technology reform to accurately operate the linear tee of the cone without using magnetic fluid. I've never seen a precedent for pure damperless in luxury units. In addition, it is changed to an expensive rectangular coil (voice coil using flat copper wire) used in the MAOP series to express a more glossy sound field.
Magnetic fluid has the effect of holding the movement of the voice coil in a certain direction in magnetism, but the viscous resistance of the liquid cannot be avoided (the sense of speed is completely different between exercising in the air and exercising in water).
This "free-to-operate drive unit" has been realized.
Mono amplifiers made by 47 laboratories
In general, the active speaker is a small speaker placed next to the PC, and a stereo amplifier is mounted on one side, and it is a speaker that can produce sound easily. However, the 47 Laboratories made a completely discrete mono amplifier and said, "There is no amplifier that can beat the one that does not have it", and attached it to the back of The Alpair5 without adding unnecessary elements to the sound as much as possible to the aforementioned "Gaincard". It sees no other example of great freshness and the ability to play ancillary sounds (subsonic signals).
You can also see the active and passive switches in the photos, but you can also drive on your favorite amp.
The sound of hand winding
My relationship with Kenneth Wong has been around for eight years now. I was invited to his workshop to arrange the world's famous output transformers and do events to compare listening to his hand-wound trance. I still remember the surprise of four Companies made in Japan and two European companies.
The transformer of his hand-wound was ringing vividly and glossyly overwhelmingly. Especially, the sound was better than the WC core of the audio notebook, which made him absolute trust as a business partner. In particular, the amplifier of 47 labs does not do any extra processing, so the quality of the power supply unit appears in the sound as it is.
Because the price was suppressed, when I changed it to a switching power supply and played it with this COMBINATION of PT70EI and DuoActive, strangely expensive high-end audio sounds boring sound.
(This power supply can also be used for 3V-24V (70W) DACs, digital amplifiers, etc.)
Eliminate magnetic fluids (No Fluorofluid)
Alpair5v1 (released in 2010) was a single suspension (damperless) using magnetic fluid, but alpair5v3 was a very challenging technology reform to accurately operate the linear tee of the cone without using magnetic fluid. I've never seen a precedent for pure damperless in luxury units. In addition, it is changed to an expensive rectangular coil (voice coil using flat copper wire) used in the MAOP series to express a more glossy sound field.
Magnetic fluid has the effect of holding the movement of the voice coil in a certain direction in magnetism, but the viscous resistance of the liquid cannot be avoided (the sense of speed is completely different between exercising in the air and exercising in water).
This "free-to-operate drive unit" has been realized.
Product specifications
Type: NC5_Duo Active
SP Unit: Alpaair5v3SS Rectangular Gray/Gold
Playback frequency: 75Hz - 27000HZ
Maximum input: 15W (cont.)
Output sound pressure level: 86dB /1w@1m
Rated impedance: 4 Ω
Mms = 1.71 g
Xmax(1way) 3.5mm
Dimensions: (Width x H x D) NC5H: 166 x 265 x 248mm
Weight: 3.0kg
Price 128,000 yen (excluding tax)
Depending on the environment of the listening room, the variable bus reflex port STBP35
Asphalt-based special downp material to manage the transmission of sound
REFERENCE: www.fidelitatem-sound.jp/fidelitatem-NC/n_detail_NC5DuoActive.html
NC5Duo Active has developed an unprecedented active speaker in collaboration with 47 Laboratories to challenge how much the extremely delicate reaction of The Alpair5v3SS can be reflected in the sound. It is a new world audio device equipped with a mono amplifier that has been modified with "4706Gain Card" independently left and right. The transformer can be driven by a 24V switching power supply.
For those who want further sound quality, we have prepared a linear power supply of EI core transformers carefully wound by KKVox Kenneth Wong one by one by hand.
When I brought the prototype model to the audition room of Music Notomosha for photography, the reaction of the editorial department started with "the speaker disappears and the sound emerges", and "Can you leave it because I want this to be a monitor speaker for the near field of the stereo magazine?" And the audition was done at the request from the audition person in charge.
Especially kenneth Wong's transformer power supply and the sound made by the IZUMI of the 47 laboratory sounds great. Please listen to it by all means.
Solid black cherry and solid walnut
Alpair5v1 (released in 2010) was a single suspension (damperless) using magnetic fluid, but alpair5v3 was a very challenging technology reform to accurately operate the linear tee of the cone without using magnetic fluid. I've never seen a precedent for pure damperless in luxury units. In addition, it is changed to an expensive rectangular coil (voice coil using flat copper wire) used in the MAOP series to express a more glossy sound field.
Magnetic fluid has the effect of holding the movement of the voice coil in a certain direction in magnetism, but the viscous resistance of the liquid cannot be avoided (the sense of speed is completely different between exercising in the air and exercising in water).
This "free-to-operate drive unit" has been realized.
Mono amplifiers made by 47 laboratories
In general, the active speaker is a small speaker placed next to the PC, and a stereo amplifier is mounted on one side, and it is a speaker that can produce sound easily. However, the 47 Laboratories made a completely discrete mono amplifier and said, "There is no amplifier that can beat the one that does not have it", and attached it to the back of The Alpair5 without adding unnecessary elements to the sound as much as possible to the aforementioned "Gaincard". It sees no other example of great freshness and the ability to play ancillary sounds (subsonic signals).
You can also see the active and passive switches in the photos, but you can also drive on your favorite amp.
The sound of hand winding
My relationship with Kenneth Wong has been around for eight years now. I was invited to his workshop to arrange the world's famous output transformers and do events to compare listening to his hand-wound trance. I still remember the surprise of four Companies made in Japan and two European companies.
The transformer of his hand-wound was ringing vividly and glossyly overwhelmingly. Especially, the sound was better than the WC core of the audio notebook, which made him absolute trust as a business partner. In particular, the amplifier of 47 labs does not do any extra processing, so the quality of the power supply unit appears in the sound as it is.
Because the price was suppressed, when I changed it to a switching power supply and played it with this COMBINATION of PT70EI and DuoActive, strangely expensive high-end audio sounds boring sound.
(This power supply can also be used for 3V-24V (70W) DACs, digital amplifiers, etc.)
Eliminate magnetic fluids (No Fluorofluid)
Alpair5v1 (released in 2010) was a single suspension (damperless) using magnetic fluid, but alpair5v3 was a very challenging technology reform to accurately operate the linear tee of the cone without using magnetic fluid. I've never seen a precedent for pure damperless in luxury units. In addition, it is changed to an expensive rectangular coil (voice coil using flat copper wire) used in the MAOP series to express a more glossy sound field.
Magnetic fluid has the effect of holding the movement of the voice coil in a certain direction in magnetism, but the viscous resistance of the liquid cannot be avoided (the sense of speed is completely different between exercising in the air and exercising in water).
This "free-to-operate drive unit" has been realized.
Product specifications
Type: NC5_Duo Active
SP Unit: Alpaair5v3SS Rectangular Gray/Gold
Playback frequency: 75Hz - 27000HZ
Maximum input: 15W (cont.)
Output sound pressure level: 86dB /1w@1m
Rated impedance: 4 Ω
Mms = 1.71 g
Xmax(1way) 3.5mm
Dimensions: (Width x H x D) NC5H: 166 x 265 x 248mm
Weight: 3.0kg
Price 128,000 yen (excluding tax)
Depending on the environment of the listening room, the variable bus reflex port STBP35
Asphalt-based special downp material to manage the transmission of sound
REFERENCE: www.fidelitatem-sound.jp/fidelitatem-NC/n_detail_NC5DuoActive.html
