Κώστας Φ.
Truth hurts. Here's a teddy bear.
- Μηνύματα
- 8.978
- Reaction score
- 895
Για την JL Audio τα είχαμε ξαναπεί εδώ.
Αυτή τη φορά έχουμε review του μεγαλύτερου, f113, απο το Stereophile. Για την ακρίβεια δοκιμάζουν ένα ζευγάρι απο δαύτα!
Καρφί για Class A Recommended Component, of course.. :cool_4:
"JL Audio started by making subwoofers exclusively for cars and boats. This may explain why their new models intended for domestic use, like the Fathom f113, are so rugged. Though nominally smaller, the f113 outweighs my Velodyne DD-18 subwoofer, with its 18" cone, by 7 lbs. More remarkable are the 4" peak–peak excursions of the f113's 13.5" woofer cone, driven by a 2.5kW class-D amplifier. To handle the internal forces, the f113's sealed enclosure is constructed of 1"-thick MDF and reinforced with two donut braces parallel to the front baffle.
The f113 brochure explains how the 13.5" cone maintains control during its huge excursions through a series of proprietary JL Audio technologies: The motor system has been designed to maintain a stable magnetic field over a wide power range; an expanded OverRoll rubber surround spans the driver's mounting flange; the Floating-Cone Attach Method of assembly ensures the proper surround geometry, to maintain voice-coil alignment at all sound levels; the W-Cone construction is said to provide torsional rigidity with minimal mass to maintain voice-coil alignment at the excursion limits; the Plateau-Reinforced Spider Attachment technique relieves stress on the spider material during peak excursions; the Elevated Frame Cooling Technology delivers cool air to the voice-coil to minimize power compression from overheating; and the Radially Cross-Drilled Pole Piece venting design increases thermal dissipation by directing a flow of air to the voice-coil former.
Other features include a front-facing control panel, a ground-lift switch to eliminate system hum pickup, and an optical interface between the unbalanced input jacks and the amplifier, also to prevent hum.
...
I recommend the JL Audio Fathom f113 for Class A of Stereophile's "Recommended Components," and urge you to listen to a pair of them. I'm sure you'll be convinced, as I was, that the benefits to your system's soundstaging will be as impressive as they will be in the reproduction of deep bass. My entire system achieved its best performance to date, producing clean, tight, solid bass signals with excellent pitch definition. Great work, JL Audio!"
Full Review: Stereophile.com
