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Steve Guttenberg gives open-baffle speakers the wall-of-sound treatment

The Quartet 15 review pairs John Williams and the Rolling Stones with amplifier comparisons and a viewer's Calgary system.

Why this story? The channel's weekly summary: what went up this week, what is drawing views now, and where the channel stands among similar channels.

Pure Audio Project Quartet 15 Speaker ReviewPure Audio Project Quartet 15 Speaker Review

Things we can learn from the video

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  1. 0:05The Quartet 15 uses an open-baffle dipole design, radiating sound from both front and back.
  2. 4:24Placement considerations include moving the speakers on casters and using the standard IsoAcoustics Gaia feet.
  3. 5:33Guttenberg tests amplification from Pass Labs, SPL, Dynakit and First Watt.
  4. 7:49John Williams' film score and the Rolling Stones supply listening tests for scale, bass and clarity.
  5. 12:09Comparison with the Duet 15 explores the larger speaker's presentation, alongside recollections of the Klipsch La Scala AL6.
  6. 15:55Nicolas Repac's Swing-Swing is the album recommendation, followed by Jim's Calgary system at 17:24.

A speaker without a conventional box gives Steve Guttenberg plenty to listen for. In "Pure Audio Project Quartet 15 Speaker Review," his only new upload of the week, he describes a dipole design sending sound backward as well as forward: "And it produces, well, a wall of sound."

These are substantial speakers with an equally substantial starting price, $19,500 a pair in the US. Guttenberg works through placement, amplification and the listening itself, using John Williams' Close Encounters of the Third Kind score and the Rolling Stones' Love You Live. His distinction is tactile: the speakers don't merely reproduce bass, he says, they let him feel it. A comparison with the smaller Duet 15 brings the verdict, "The music just breathed more."

The review has reached about 50,000 views and is drawing the strongest daily audience among his active uploads. September's Klipsch Rebellion review and the more recent Tri-Art TA-2 turntable review follow at a gentler pace. Across the channel, subscribers were unchanged over the week, while daily views are somewhat below their usual level. Weekly viewing landed close to Canoopsy's, with JSL Review having a much larger week.

The conversation beneath the Quartet review extends beyond the equipment on test. Owners describe adjusting to open-baffle sound, while another viewer spots a tuner in the featured system. Guttenberg finishes with Nicolas Repac's Swing-Swing as his album recommendation and Jim's Calgary setup, giving the big-speaker discussion a fellow listener's home-system finish.

Published on Trari

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What viewers say

  • Nice to see a tuner in the system of the day!
  • I have a pair of the Quartet15s and love them. I have been waiting for this review to drop so I could hear your opinion. They are amazing.
    @daleromney6062See it on YouTube
  • Thanks for the Nicolas Repac recommendation, Swing-Swing is a trip!
    @jamesmyers6838See it on YouTube
4 more comments
  • That's a gorgeous viewer system of the day
    @johnkeenan9495See it on YouTube
  • Thank you so much Steve for all the work you do.
  • My 1972 Ohm F’s fill the room with sound like no other
    @stinkenstineSee it on YouTube
  • I had the Infinity RS IIb speakers in the mid-1980s. They were (sort of) the best of both worlds, with open baffle ribbon mids and highs, with (2) 10" woofers, below. If it weren't for the foam surrounds on the low end, they were phenomenal.
    @gooddaysahead1See it on YouTube

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The videos drawing views on Steve Guttenberg Audiophiliac right now

The facts
Subscribers
280,000
Channel views, last 7 days
199,205
Videos published this week
1
Video published
November 4, 2026
Video views so far
50,402
Views on its first day
32,566

The numbers

Here is how the channel's week and its most active videos stack up.

views gained this week: this channel and similar channels
JSL Review
1,712,641
Canoopsy
216,429
Denki
175,044
PCMag
133,309
subscribers
280,000
no significant change in the last 7 days
total views
78,697,871
views per day
24,155
typical day: 29,197
first-day views of each video posted this week
subscribers: this channel and similar channels
Canoopsy
310,000
JSL Review
288,000
Denki
267,000
PCMag
265,000
As of November 9, 2026 · Data source: Trari Social News, Trari Traffic Trends and Ranking Platform, Google YouTube
Subscriber, view, like and comment counts are YouTube's. Rates, usual days, rankings, comparisons and categories are Trari's own calculations.
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💡 Test your knowledge

Which Rolling Stones album does Guttenberg use in the Quartet 15 listening tests?