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Speaker Asylum: REVIEW: JMLab Cobalt 806 Speakers by Belgarchi

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REVIEW: JMLab Cobalt 806 Speakers

69.22.53.120


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Model: Cobalt 806
Category: Speakers
Suggested Retail Price: $1000
Description: Two-ways Bookshelf
Manufacturer URL: JMLab
Manufacturer URL: JMLab

Review by Belgarchi ( A ) on October 07, 2005 at 22:08:46
IP Address: 69.22.53.120
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for the Cobalt 806


* These speakers are very user-friendly. Great, modern look. Dual good quality binding posts. Front vent, allowing to use them in many locations (bookshelf, against a wall, on stands, etc.). Well protected by a steel grill (will not become crap after a few years, like textil), and a "bridge" in front of the tweeter.
* Impressive technology. Superb mid-bass, with a sandwich kevlar cone, big magnet, die-cast frame. Concave tweeter made of titanium. Complex, 11 components crossover (probably 24 db/ocatve electrical slope). Unfortunately, a few electrolytic caps are used. Very good, thick enclosure (3/4" MDF). Good internal cables.
* The sound has very good and very bad aspects. Very, very detailed. Wide bandpass. High efficiency, very good dynamic, high maximum level. Free from box coloration.
Good imaging. But there is a slight lack of coherence, a little bit of aggressivity. I didn't measure them yet, but there is, probably, a little bit too much high medium and treble frequencies. It should be possible to improve the result by adding a resistor or a L-Pad.
All things considered, excellent value.


Product Weakness: Lack of coherence and slight aggressivity, probably due to a recessed low medium
Product Strengths: User-friendly, reliability, technology, value for money, detailed sound, no box coloration


Associated Equipment for this Review:
Amplifier: Arcam A75+ ; SonoGraph SA250
Preamplifier (or None if Integrated): None ; Rotel RC-1090
Sources (CDP/Turntable): NAD 5100 ; CAL CDP-10
Speakers: JM Lab 806 Cobalt
Cables/Interconnects: QED ; Kimber
Music Used (Genre/Selections): All kind
Room Size (LxWxH): 16' x 12' x 10'
Room Comments/Treatments: Semi-reverberant
Time Period/Length of Audition: 3 weeks
Type of Audition/Review: Product Owner




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Topic - REVIEW: JMLab Cobalt 806 Speakers - Belgarchi 22:08:46 10/7/05 ( 2)