All items tagged with midbass drivers (57)

Purifi Audio Unveils New Aluminum Cone 6.5" Extended Excursion Woofer

February 3, 2022 by audioXpress Staff

Purifi Audio Unveils New Aluminum Cone 6.5" Extended Excursion Woofer

Danish audio powerhouse Purifi Audio is not showing any intention of slowing down its efforts to push innovation further in both audio amplification and speaker transducers. Adding to the original formula - featuring proprietary fiber paper cones - used in the successful PTT4.0X and PTT6.5X midbass drivers, Purifi now announced a new aluminum-cone version of the PTT6.5X, delivering extended frequency range with ultra low distortion for superior midrange performance.

Test Bench: An Extended Home Audio 6.5” Midbass Transducer from Purifi Audio

September 22, 2021 by Vance Dickason

Test Bench: An Extended Home Audio 6.5” Midbass Transducer from Purifi Audio

The Purifi Audio PTT6.5X04-NFA-01 midbass transducer is an over-achiever, and to help understand why, Dickason talks with Lars Risbo about the research and thought process that lead to many of the features found in this woofer. Including the unique cone assembly that consists of a mildly curvilinear paper cone made with a proprietary fiber mix, a 3.13” concave dust cap, and a V-shaped edge reinforcing ring, the NBR surround, and what Dickason calls "probably the most unique surround in the history of Voice Coil’s Test Bench. This article was published in Voice Coil July 2021.

Cutting-Edge Speaker Innovation and Glue Joints Inside Voice Coil July 2021

June 25, 2021 by audioXpress Staff

Cutting-Edge Speaker Innovation and Glue Joints Inside Voice Coil July 2021

Voice Coil July 2021 is now available and full of valuable articles. Starting with Mike Klasco's insights on glue joints and attachment techniques used in speaker design. Followed by an updated and comprehensive directory of manufacturers and suppliers of adhesives, coatings, and treatments for the speaker industry. James Croft reviews the recent Bidirectional Speaker patent awarded to Resonado Labs, and Vance Dickason places the totally unique Purifi PTT6.5X04-NFA-01 midbass driver on Test Bench, followed by Beyma's 12LEX1300Nd 12” woofer with its unique Maltcross cooling system. Now available in print and online!

Test Bench: The BWX-6502 Midbass from MISCO’s Bold North Audio Line

April 27, 2021 by Vance Dickason

Test Bench: The BWX-6502 Midbass from MISCO’s Bold North Audio Line

In this article, Vance Dickason characterizes the Bold North Audio BWX-6502 Midbass, which comes from a series of exciting new drivers designed and manufactured in the US by MISCO (Minneapolis Speaker Company). The BWX-6502 is built on the same platform with a similar XBL2 "dual-gap" motor design structure to the BWX-6501 model but with a cone assembly consisting of an Abaca fiber (paper) cone and a 60mm (2.4") diameter Abaca fiber dust cap, with compliance provided by a wide high excursion NBR surround, and a 3.5" diameter flat cotton spider (damper). This article was originally published in Voice Coil, January 2021.

Test Bench: The BWX-6501 Midbass from MISCO’s Bold North Audio Line

March 4, 2021 by Vance Dickason

Test Bench: The BWX-6501 Midbass from MISCO’s Bold North Audio Line

This Test Bench characterizes the very recent BWX-6501 Midbass driver from MISCO’s Bold North Audio Line. MISCO (Minneapolis Speaker Co.) is the oldest OEM driver manufacturer in the US, founded in 1949, and Bold North Audio is its new brand, launched in 2019. The Bold North lineup was recently expanded to include two new 6.5” XBL2 motor woofers. These new models, all designed and manufactured in MISCO’s own facility in St. Paul, Minnesota, feature dual inside-outside copper shorting rings in the motor to greatly reduce distortion. This article was originally published in Voice Coil, December 2020.

Bold North Audio Expands Range with New Carbon Fiber Cone Woofers

February 17, 2021 by audioXpress Staff

Bold North Audio Expands Range with New Carbon Fiber Cone Woofers

American audio solutions manufacturer MISCO announced the introduction of the BWF-6503, a 6.5" red carbon fiber woofer, and the BMW-4001, a 4" carbon fiber midwoofer to its growing line of premium and performance-based drivers. The two new designs are Klippel Verified and manufactured under the Bold North Audio brand in MISCO’s facility in St. Paul, Minnesota.

Precision Devices Confidently Introduces Eight New Products

January 26, 2021 by audioXpress Staff

Precision Devices Confidently Introduces Eight New Products

Precision Devices, the highly regarded "Made in England" manufacturer of high-quality loudspeaker transducers, just announced a brand new series of products. The company is using the forced interruption of normal support activities to intensify its work on refinements, new product development and improving production methods to its extensive portfolio. The results are now visible in new improved subwoofers, bass/midrange, and midrange drivers.

Test Bench: Scan-Speak 21WE/4542T00 Ellipticor Midwoofer

December 30, 2020 by Vance Dickason

Test Bench: Scan-Speak 21WE/4542T00 Ellipticor Midwoofer

This Test Bench article focuses on the Scan-Speak Ellipticor 21WE/4542T00 midrange woofer, an impressive looking driver. The motor design for the Ellipticor 21WE/4542T00 is again an AirCirc multi-magnet and patented SD design, using an elliptical two-layer voice coil wound with round copper wire on a titanium former. Motor parts include polished front and back plates for the neodymium magnets that incorporates a 12 mm diameter rear vent for additional cooling. This article was originally published in Voice Coil, October 2020.

Bold North Audio Releases Two High Excursion 6.5" Woofers Employing XBL2 Technology

November 18, 2020 by audioXpress Staff

Bold North Audio Releases Two High Excursion 6.5" Woofers Employing XBL2 Technology

Expanding its line of premium and performance-based drivers, designed and manufactured under the Bold North Audio brand, MISCO announced the introduction of the BWX-6501 & BWX-6502, two high performance 6.5" high excursion woofers with an XBL2 motor design and 10 mm linear Xmax. These new models add to a growing line of premium and performance-based drivers, all designed and manufactured in MISCO’s own facility in St. Paul, Minnesota.

Voice Coil October 2020 Puts Speaker Electronics, Amps, and DSP in Focus

September 25, 2020 by audioXpress Staff

Voice Coil October 2020 Puts Speaker Electronics, Amps, and DSP in Focus

Voice Coil October includes an updated directory of speaker-focused electronics, amps, and DSP vendors. And an insider's perspective about Nuvoton’s new smart amps, featuring Klippel's Controlled Sound (KCS) technology. This month's Acoustic Patents article discusses a Planar Loudspeaker Manifold patent granted to Dolby Laboratories, and Vance Dickason's Test Bench characterizes the latest Scan-Speak Ellipticor 21WE/4542T00 midrange, followed by the ODT29 fabric dome tweeter from Omega Audio. Now available online and in print!

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