zumbini

I'm glad you finally got some answers Lakadian but I'm left with quite a few questions. What the heck is a "professional grade home audio setting"? If it was intended for home audio use why does it have a steel safety bar? Does it have a name? (Sunfire Laboratories Professional Subwoofer is quite a mouthful) Did it have a model or catalog number? Congratulations on your unique and wonderful find. ENJOY!

We're pulling for you Lakadian!

I don't think any of us are too surprised that Sunfire left you hanging. You'll probably have better luck with a Sunfire service tech like Rita at BobCarver.com or Roland at CarverAudioRepair. Another possibility would be to ask Tom at Vintge HiFi of Pittsburgh. or post your photos on his Vintage HiFI forum. Good luck with your quest!

That's a very cool story Balok. I'd really like to see those photos. There are several ways to download photos off your cell phone. 1. If your phone has a memory card copy the photo(s) to it. Then pull the card out and insert it into your PC's multi-card reader. 2. If you have a USB communication cable for your phone plug it into your PC. With newer phones it should show up as a "new device" and read like an outboard drive. If not you'll need a 3rd party program like BitPim to facilitate the phone to computer interface. 3. Email the photo(s) to your email client as an attachment.

With cutoffs of 35, 65 or 100Hz I suspect your subs were designed to augment a small PA or DJ system. They are certainly relatively unique since no one here has ever come across one before. Similar Carver and Sunfire subwoofers for the home market had MSRP's of $1,200 to $2,200. Today used units sell for $400 to 800 depending on condition. BTW - Back in the late 60's/early 70's I owned an Ampeg Portaflex B-18 Fliptop bass amp. It was a nifty design with a head that stored in the cabinet for transport and flipped 180 for playing. I don't have any photos of my B-18 but here's what they look like.

Nice score Carlton

Looks like Sunfire's pro version of the short-lived Carver Knight Shadow. The Knight Shadow was the predecessor of the Sunfire True series

Good sleuthing Geoff!

Anybody remember these?

The Klipsch KG2.5 sounds great and they can handle a ton of power for their size. I'd also look at the smaller Infinity RS series speakers and the Boston Acoustics CS26.

Nice job Mike. How about an MKII version with an air motor to spin the disc and a kwik-clamp replacing the wing nut? These quick release cymbal nuts from Tama and EXA might do the trick. Here's the video

Nice job Mike. I'd love to see that a video of that in action.

I recently re-foamed a 30+ year old Design Acoustic subwoofer that I bought on ePray. I had done a few smaller speakers (mostly mids) in the distant past but I'm far from an expert. Someone had re-coned the sub and botched the job, but I was able to fix it with help from a few members. I posted a blow by blow description of the proceedings along with plenty of photos HERE.Reading through the details of my project might help you decide if you can handle yours.

History of the Klipsch Cornwall, Cornwall II, Cornwall III This is a timeline for the evolution of the Klipsch Cornwall speaker from inception in 1959 to the current date. Date Event Media October 1959 The Cornwall is introduced as the world's second commercially produced center speaker. A speaker with higher output capability than the Heresy was needed when used in three speaker arrays between Klipschorns®. Component designations: Woofer EV 15WK, Midrange K-1000 Horn and University SAHF Driver, Tweeter K-77 Late 1959 Transition to the K-33-J Woofer (Jensen) 1959-1961 Sporadic transition to the K-55-V mid-range driver (Atlas). January 1963 The K-1000 diffraction type midrange horn was replaced with the exponential K-600 horn with a lower (600 Hz) cutoff September 1967 Transition to the K-33-M. The records are not clear as to the origin of this driver but it is believed to be an Eminence driver with an Alnico magnet. January 1968 Transition to The K-33-P Woofer (CTS Paducah KY) 1974 The horizontal version of the Cornwall is discontinued. K-56 mid-range driver (Electrovoice 1828) is used for a short period as a temporary replacement as the supply of K-55-V drivers was interrupted. 1975 Transition to The K-33-B Woofer (CTS Brownsville TX) 1975-1879 K-33-E (Eminence) and the K-33-B were used interchangeably. The records are not specific about the actual start date for the K-33-E but it is believed to be in the early to mid 1970's 1979 The Eminence K-33-E woofer is used exclusively June 5th, 1981 The updated B2 network, with steeper crossover slopes is phased in with no changes to the K-33-E, K-55-V and K-77-M driver compliment. October 19th, 1981 - March 1983 The transition between four different iterations of the midrange driver from revolving sources occurs during this period. The original K-55-V was changed to a K-51-V (10/19/81) This marked the first time in the Cornwall's history that it used a driver set that differed from that of the Klipschorn®. The K-51-V was then changed to the to the K-55-G (essentially a ceramic magnet version of the Atlas Alnico K-55-V). The K-55-G was then changed to the Hepner built K-52-H and finally the Klipsch built K-52-K. March 14th, 1983 The B-3 network and the K-52 midrange driver starts to be used in this model. Component designations were: Woofer Eminence K-33-E, Midrange K-57-K (K- 600 Aluminum horn and K-52-K driver with snout), Tweeter K-77-M and B-3 network. January 1986 The Cornwall II is introduced featuring front mounted drivers to reduce baffle induced diffraction effects. Component designations were: Woofer Eminence K- 34-E (K-33-E with a dressy pad ring), Midrange K-57-K (K-601 plastic horn and K-52-K driver), Tweeter K-79-K (K-75-K horn and K-79 driver) and CW II network. 1990 The Cornwall II is discontinued. March 2006 The Cornwall III is introduced marking the end of the Cornwall's 15 year absence from the market. This version utilizes the Klipschorn® woofer, the horn and driver set from the Heresy III (featuring Titanium diaphragms and a ® tweeter horn) and bi-wire inputs. Component designations are: Tractrix Woofer K-33-E, Midrange K-53-Ti (K-701 horn and K-53-Ti driver), Tweeter K- 107-Ti (K-79-T horn and K-100-Ti driver). Information originally provided by Jim Hunter and Mark Kauffman of Klipsch Audio Technologies, LLC

Sounds like it was well worth the price of admission. Thanks for the review and pics!

ROAD TRIP!

Hope someone from the site is there to give us an "ears on" analysis.

Basically I have speakers in every room larger than a walk-in closet for a total of 10 pair. Plus, there are 2 Legacy subs in the man cave and a Design Acoutics DA20LF sub in my shop. My car has 2 pairs of tweeters, 1 pair of 4.25" mids, 1 pair of 6.5" mains (all JBL) and a 10" Rockford-Fosgate sub. Zack has a 5.1 system for his computer and a pair of Klipsch KG2.5 with a PSB sub in the basement. The band PA system consists of 4 passive mains, 2 powered fills and 3 wedge monitors, plus I'm building a pair of 18" subs. I also have a several pairs of cheap 3-ways boxed up (Dynaco, Harmon-Kardon, Radio Shack, Sony, etc). In addition I have a powered Koss M-100 Plus and a pair of Infinity RS2001 on the bench. Let's see, that comes to....a lot!

Star Trek 2009 (aka "the prequel"). I'm just a Trekkie at heart....

That's a good one Rodney!

Nice job Lee. Got any photos to show us? BTW - Congrats on your 100th post!

Would have been nice if anyone other than Fric and Frack had been the hosts. Neil might as well have been talking to the back end of the donkey.

Looking good Rob!