Trenner & Friedl Osiris loudspeaker Specifications

Sidebar 1: Specifications

Description: Coaxial-driver, vented, floorstanding loudspeaker. Drive units: 6.5" paper cone woofer, coated with oil lacquer. 1" horn-loaded coaxial compression tweeter driver with titanium diaphragm. Frequency range: 38Hz–30kHz. Sensitivity: 88.7dB/2.83V/1m. Nominal impedance: 8 ohms.
Dimensions: 33.50" (850mm) H by 14.25" (360mm) W by 14.56" (370mm) D. Weight: 55lb (25kg).
Finishes: Walnut natural, walnut amaranth, walnut blazed.
Serial numbers of units reviewed: 538A, 538B. "Handcrafted in Austria."
Price: $8500/pair. Approximate number of dealers: 20. Warranty: 3 years.
Manufacturer: Trenner & Friedl Graz Trenner & Friedl GmbH, Anton-Afritsch-Weg 4, 8052 Thal, Austria. Tel: +43 -664 442 41 05. US distributor: Profundo, 2051 Gattis School Road, Suite 540/123, Round Rock, TX 78664. Tel: (510) 375-8651. Web:

Trenner & Friedl Graz Trenner & Friedl GmbH
US distributor: Profundo
2051 Gattis School Road, Suite 540/123
Round Rock, TX 78664
(510) 375-8651

Bogolu Haranath's picture

T&F Sun (Stereophile Class-A, limited LF) may be a better value for the money, at about less than half the price of Osiris :-) ..........

Ortofan's picture

... Klipsch La Scala II speakers. It's been over a decade since "Sam Tellig" sampled them. Perhaps KM can review current production units, or maybe the somewhat pricier latest AL5 iteration. His 20-30W tube amps should be a good match for them.

Anton's picture

The Golden Ear Reference is in this range, as well.

It's a fascinating market point. This price is where speakers really seem to break loose of the main cost constraints and really start the party!

The T & F speakers are sure pretty, though!

supamark's picture

I live in Austin (Round Rock is a suburb, and I recognized the road on which they're located so I googled it), and that address is a freakin' PostalAnnex+. They're not even a real company, just a box at a retail shipping service. They literally don't exist as a physical entity and their phone number (510 area code) is based in the Bay Area of California. Diety of your choice help you if you need US service for anything they distribute (like 5 obscure brands)....

bclarke3's picture

Profundo will celebrate it's 20th anniversary next year. We moved to the Austin area 8 years ago from the SF Bay Area. Due to frequent travel and for continuity's sake, we have maintained our original phone number, which is mobile. Owing to the high value of the equipment we import and stock, we, like many distributors, maintain a mailing address that is separate from our physical location. We are not open to the public, as we sell through a dealer network.

I have to question the motivation for such a comment, other than just trolling. It does not address the product reviewed, its performance, or anything else relevant to the enjoyment of music, which is our primary goal in this industry. We support all our products, which rarely require service. The "youngest" product for us has been in our lineup since 2003, so these are not fly-by-night companies, rather, they are small, high-quality manufacturers that have very solid reputations worldwide, both for sound quality and reliability.

Since the author, "supamark" is a neighbor, perhaps he would like to meet for coffee sometime and learn more about our company and, also, maybe something about the products we import. We, and they, are quite real.

lars's picture

In my experience such a resonance as seen at 227 Hz is most often caused by an internal standing wave. Using 343/227/2 the internal dimension should be 0.76 m, which might very well match the internal height. It can be confirmed by measurements or by adding additional absorption in the bottom.

Hawaii Audio's picture

Aloha from Hawaii Audio! Just read this review and comments, and was saddened to see the comments about Profundo.

Bob Clarke is a CLASS ACT; I have communicated with him since at least 2005, when I was importing S.A.P. Audio of Salerno & exhibiting at CES. Always a big fan of VIVA Audio and also Transfiguration.

I bothered Bob on numerous occasions with inquiries; he was ALWAYS super responsive, courteous and professional.

Amazed and humbled that he is still running an audio import business in 2019. Hats off to him...and let's SUPPORT those who are still at it, instead of trying to tear them down...

Mahalo from Hawaii, for all your good will and professionalism all these many years, Bob!

Terry Hart
Hawaii Audio / S.A.P. Audio Int'l