News:

SMF - Just Installed!

Main Menu
Menu

Show posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Show posts Menu

Messages - Tranquility Bass

#76
SC-IV.A / Re: Reviews
October 20, 2023, 09:36:01 PM




#78
SC-IV.A / Reviews
October 20, 2023, 09:35:29 PM
Dunlavy Audio Labs SC-IV/A Loudspeakers

by Jon Gale

SoundStage! Equipment Review - Dunlavy Audio Labs SC-IVA Loudspeakers.pdf
#79
SC-IV.A / Model Information
October 20, 2023, 09:11:29 PM
DAL SC-IV/A



As the newest addition to the Dunlavy Audio Labs collection, the SC-IV/A utilizes the most advanced technologies which results in a loudspeaker of remarkable performance and value.

Capable of full range performance in a three way design, the SC-IV/A offers extreme linearity, fabulous imaging, as well as stunning bass response (-3 dB @ 21 Hz). The impact and accuracy of the bottom end gives incredible realism to pipe organs, concert drums, and other low frequency instruments that other comparably priced speakers simply cannot re-create without a bloom or bloat. With the SC-IV/A, these bottom notes come fast and intense, and because of the extraordinary system impulse response of the SC-IV/A, they also disappear as quickly as they appeared. (An audio/video system featuring the SC-IV/A’s would offer unfathomable performance.) Incredible driver integration and total phase coherency via the intricately designed first order crossover and the time aligned, symmetrical driver array translates into an immensely deep sounstage, pinpoint placement of instruments, and rock solid vocals. The SC-IV/A offers true world class performance at a fraction of the price.

Like all Dunlavy Audio Labs Signature Collection loudspeakers, the SC-IV/A has been designed in our state of the art equipped facilities including two large anechoic chambers where each speaker is measured for frequency, impulse, step, waterfall, and impedance.

If the Dunlavy Audio Labs SC-V is the best high end loudspeaker value above $10,000.00, then the SC-IV/A is the best loudspeaker value under $10,000.00.


 
AMPLITUDE/FREQUENCY RESPONSE:25Hz to 20kHz; +/- 1.5 dB; -3 dB @ 20Hz (anechoic).
EFFICIENCY:Approximately 91 dB SPL at 1 meter for an input level of 2.83 Volts RMS
IMPEDANCE:Nominal 5 ohms (min.=3 ohms; max.=7.5 ohms)
PULSE-COHERENCE:Impulse response is equal to or better than most top-of-the-line CD players and Digital Processors.
RADIATION PATTERNS:Precisely symmetrical in both horizontal and vertical planes
DIFFRACTION DISTORTION:Virtually eliminated by the use of efficient sound-absorbing material. (US Patent #4,167,985)
DRIVERS:-Two 10" Woofers (cast basket, high damping rubber surround)
          -Two 5" Mid-Bass (cast basket, high damping rubber surround)
          -One 1" composite textile dome tweeter.
CROSSOVER AND INTERNAL WIRING:First order design. Biwire, biamp capability. High voltage, metal film capacitors. Precision machined wound, heavy gauge, high purity copper coils. CAD designed Mil spec fiberglass PC boards utilizing high purity copper traces. Internal wiring via individually isolated ultra pure, proprietary copper cables.
RECOMMENDED AMPLIFIER POWER:Minimum of 100 watts/channel, rated into 8 ohms



 
SIZE:72" H x 12" W x 18" D
WEIGHT:190 lbs. (each)
MATERIALS:1" MDF, hardwood corners, architectural hardwood veneers
FINISH:Standard: light or black Oak.
          Optional: Rosewood, Cherry or Natural Cherry.
GRILL:Frame: Acoustically transparent, precision machined steel frame.
          Cloth: Acoustically transparent black weave







SC-IV/A Frequency Response















SC-IV/A Impulse Response















SC-IV/A Step Response















SC-IV/A Spectral Time Delay Response















SC-IV/A Impedance




#80
SC-IV / Technical Information/Crossover Schematics
October 20, 2023, 06:49:51 PM
Dunlavy SC IV.jpg
#84
SC-IV / Model Information
October 20, 2023, 06:46:38 PM
DAL SC-IV

dun4s.jpg

Click here to download SC-IV Brochure

hfe_dunlavy_audio_labs_sc-iv_flyer_en.pdf
#85
SC-III.A / Model Information
October 20, 2023, 06:44:01 PM
DAL SC-III.A





Electrical Specifications

Amplitude/Frequency Response: 
On-axis +/- 1.5 dB from 27 - 20,000 Hz

Efficiency: Approximately 90 dB SPL at 1 meter for an input of 2.83 Volts RMS

Impedance: Nominal 4 Ohms (3 Ohms min. & 6.5 Ohms max.)

Drivers: One 10" cast basket, carbon fiber composite Woofer, two 6.5" magnesium basket, high damping rubber surround polycone Mids and one 1" silk dome Tweeter

Physical Specifications

Size:
 (approximate) 52" high X 11"wide X 14" deep

Weight: (approximate) 85 lbs. each.
#86
SC-III / Model Information
October 20, 2023, 06:05:30 PM
DAL SC-III

Click here to download SC-III brochure hfe_dunlavy_audio_labs_sc-iii_flyer_en.pdf




The Dunlavy Audio Labs SC-III has often been described as the "perfect loudspeaker." With a footprint of only 15.25" wide and 15.25" deep, an elegant enclosure, and a suggested retail price starting at only $3,995.00 per pair, this three way design is pure pleasure - aesthetically, sonically, and fiscally.

Capable of amazing dynamic performance, the SC-III also has an astonishing ability to disappear into a room, leaving only music. This is accomplished by it’s unique, time aligned symmetrical driver array and phase coherent first order crossover, which minimizes floor and ceiling reflections allowing the listener to reach a level of musical purity that is unequaled by the competition.

With it’s 1" dome tweeter, two 5" cone mid-range drivers, and two 6.5" heavy duty woofers, the SC-III is capable of recreating the most delicate musical transients with clarity and precision, while also possessing the capability of rocking out with power and speed. The SC-III is truly a "renaissance" loudspeaker that meets the needs of the budget conscious music lover who has a wide range of musical tastes.

With it’s incredible versatility, exquisite lines, and amazing value the SC-III just might be the consummate loudspeaker for "everyman."

"They (SC-III’s) are exactly that type of rare product that both confirms ones aspirations and pushes one to new levels of understanding. Emotionally, these are the most direct and natural speakers I’ve ever heard."
- Todd Warnke; Soundstage!

AMPLITUDE/FREQUENCY RESPONSE:45 Hz to 20 kHz, +/- 1.5 dB (anechoic).
EFFICIENCY:Approximately 91 dB SPL (ref: 1 meter, on-axis) for an input level of 2.83 Volts RMS
IMPEDANCE:Nominal 4 ohms (min.=3 ohms; max.=5.5 ohms)
PULSE-COHERENCE:Impulse response is equal to or better than most top-of-the-line CD players and Digital Processors (at 10 ft. on-axis)
RADIATION PATTERNS:Precisely symmetrical in both horizontal and vertical planes
DIFFRACTION DISTORTION:Virtually eliminated by the use of efficient sound-absorbing material on all relevant surfaces. (US Patent #4,167,985)
DRIVERS:-Two 6 1/2" Woofers (cast basket, high damping rubber surround)
          -Two 5" Mid-Bass (cast basket, high damping rubber surround)
          -One 1" composite textile dome tweeter.
CROSSOVER AND INTERNAL WIRING:First order design. Biwire, biamp capability. High voltage, metal film capacitors. Precision machined wound, heavy gauge, high purity copper coils. CAD designed Mil spec fiberglass PC boards utilizing high purity copper traces. Internal wiring via individually isolated ultra pure, proprietary copper cables.
RECOMMENDED AMPLIFIER POWER:Recommended minimum of 50 watts into 8 Ohms.

SIZE:72" (1829mm)H x 9" (229mm)W x 12" (305mm)D
WEIGHT:80 lb (36 kg) each
MATERIAL:3/4" MDF, hardwood corners, architectural hardwood veneers
FINISH:Standard: light or black Oak.
          Optional: Rosewood, Cherry or Natural Cherry.
GRILL:Frame: Acoustically transparent, precision machined steel frame.
          Cloth: Acoustically transparent black weave


SC-III Frequency Response






SC-III Impulse Response






SC-III Step Response






SC-III Time Delay Spectral Response
#87
SC-II.CC / Model Information
October 20, 2023, 06:01:37 PM
DAL SC-II.CC





Tranquility Bass ยท Feb 19, 2023 at 8:30 PM[/url]]


Electrical Specifications

Amplitude/Frequency Response: 
On-axis +/- 1.5 dB from 60 - 20,000 Hz

Efficiency: Approximately 91 dB SPL at 1 meter for an input of 2.83 Volts RMS

Impedance: Nominal 4 Ohms (3 Ohms min. & 6.5 Ohms max.)

Drivers: Two 6.5" shielded magnesium basket, polycone Woofers and one 1" composite silk dome Tweeter

Physical Specifications

Size:
 (approximate) 11" high X 25"wide X 15" deep

Weight: (approximate) 45 lbs. each.
#88
SC-II.A / Model Information
October 20, 2023, 05:50:28 PM
DAL SC-II.A


 


Electrical Specifications

Amplitude/Frequency Response: 
On-axis +/- 1.5 dB from 60 - 20,000 Hz

Efficiency: Approximately 91 dB SPL at 1 meter for an input of 2.83 Volts RMS

Impedance: Nominal 5 Ohms (3 Ohms min. & 7.5 Ohms max.)

Drivers: Two 6.5" (shielded optional) magnesium basket, polycone Woofers and one 1" silk dome Tweeter

Physical Specifications

Size:
 (approximate) 25" high X 11"wide X 13" deep (without stand)

Weight: (approximate) 45 lbs. each.
#90
SC-II / Model Information
October 20, 2023, 05:47:45 PM
DAL SC-II

Click here to download SC-II brochure hfe_dunlavy_audio_labs_sc-ii_flyer_en.pdf




The SC-II is a two-way loudspeaker aficionado’s dream come true. While most two-way loudspeakers either sit, precariously mounted, on required stands, or are housed in a diminutive floor standing cabinets, the Dunlavy Audio Labs SC-II’s enclosure stands a full 65" high. This allows for proper positioning of the 1" composite textile tweeter and the two 6.5" woofers so that the listener is immersed in music that is time and phase coherent.

The cabinet size of the SC-II (65" high x 8" wide x 10" deep, with an incredibly small floor space requirement of only one square foot) allows for substantial dynamic range without the use of ports or vents, which while allowing a cabinet of lesser size to achieve greater bass response, can also color the signal with the port or vents tuned frequency. The use of such devices can give the perception of "one note bass" and a high degree of repetitiveness with regards to the listeners perception of the music. Not so with the SC-II. Bass guitars, cellos, and drums are re-created with stunning realism, as well as truly amazing reproduction of vocals.

With it’s high efficiency, coupled with a very flat impedance curve, the SC-II is capable of being driven effectively with just about any type of high quality power amplifier currently available. In fact, with the SC-II’s amazing accuracy and even more remarkable price (starting at a suggested US retail of $2,495.00 per pair), a smart, value minded audiophile is capable of putting together a system capable of true world class performance at a very reasonable price.

Sure, there are two-way speaker systems costing many thousands of dollars more, but none are capable of reaching the level of objective performance achieved with the SC-II.

"I can state right here and now that the SC-IIs are outstanding performers, not only for two-way models, but also compared to just about anything else, including many top-grade three and four-way designs. In terms of full-range performance, the Dunlavy Audio Labs SC-IIs are among the finest speakers I have had a chance to audition in my own listening room. Indeed, the SC-II may be the best two-way speaker system available today, and if it is not, it certainly can give whatever is in first place a serious run for the money."
- Howard Ferstler; Sensible Sound

AMPLITUDE/FREQUENCY RESPONSE:55 Hz to 20 kHz, +/- 1.5 dB (anechoic).
EFFICIENCY:Approximately 91 dB SPL (ref: 1 meter, on-axis) for an input level of 2.83 Volts RMS
IMPEDANCE:Nominal 5 ohms (min.=3 ohms; max.=7.5 ohms)
PULSE-COHERENCE:Impulse response is equal to or better than most top-of-the-line CD players and Digital Processors (at 10 ft. on-axis)
RADIATION PATTERNS:Precisely symmetrical in both horizontal and vertical planes
DIFFRACTION DISTORTION:Virtually eliminated by the use of efficient sound-absorbing material on all relevant surfaces. (US Patent #4,167,985)
DRIVERS:Two 6 1/2" Mid-Bass (cast basket, high damping rubber surround)
          One 1" composite textile dome tweeter.
CROSSOVER AND INTERNAL WIRING:First order design. Biwire, biamp capability. High voltage, metal film capacitors. Precision machined wound, heavy gauge, high purity copper coils. CAD designed Mil spec fiberglass PC boards utilizing high purity copper traces. Internal wiring via individually isolated ultra pure, proprietary copper cables.
RECOMMENDED AMPLIFIER POWER:Recommended minimum of 50 watts into 8 Ohms.

SIZE:65" (1650mm)H x 8" (203mm)W x 10" (254mm)D
WEIGHT:60 lb (27 kg) each
MATERIAL:3/4" MDF, hardwood corners, architectural hardwood veneers
FINISH:Standard: light or black Oak.
          Optional: Rosewood, Cherry or Natural Cherry.
GRILL:Frame: Acoustically transparent, precision machined steel frame.
          Cloth: Acoustically transparent black weave