Its ability to reproduce program material with stunning transparency. Jbl d120f vs altec 4178h vs evm12l page 5 the gear page. Ive considered that with a jeff markwart crossover the longest. It appears that the altec engineers had their stock crossover filter nicely adapted for the 8k. So yesterday i commissioned the restoration of a pair of vintage altec lansing a5 voice of the theatre loudspeakers. Altec 604h8 needs a new crossover there are people, measure everything what they build and obstruct. Email address we wont share you email address with anyone else. Approach to vintagemodern speakers page 3 the gear page. I have a pair of altec model 19 and i would like to change their original capacitors. This kit works in the urei 8 and altec 604k with the blue horn.
And finally, a phasecorrect crossover for the 6048h. Urei 811 studio monitors with original altec 604 8g. Tannoy prestige stirling gr is a beautiful and reasonably compact speaker that combines finest crossover components and iconic timeless classic design. The permanent magnet upgrade of the 601 was released in 1944 as the 604, at which point the 601 was discontinued. As others have already mentioned, theres a unique advantage with a pointsource design that cant really be duplicated by any other. Jul 25, 2017 the great plains audio 604 8h iii is a much improved version of the vintage ferrite magnet altec 604 family, and is currently in production. New great plains audio 6048h series iii loudspeaker. Altec 6048g, 604k recone kit urei 8 speaker exchange. Compared to the early production ferrite altec 604 16x discussed elsewhere in these pages, the gpa 604 exhibits very smooth and extended response. Altec lansing recone kit, repair recone kit for altec 604, 604c, 6048, co ax. Supercrossover for altec model 17 crossover upgrade model for altec model 19 supercrossover for altec model 19 supercrossover for altec model 604e supercrossover for altec model 6048g supercrossover for altec model 6048h crossover upgrade model for altec 6048k. Reverb is the marketplace for musicians to buy and sell used, vintage, and new music gear online. Altec 604 h8 needs a new crossover there are people, measure everything what they build and obstruct.
We also recommend our optional n6048a crossover network for the 6048hiii, which. First and last name only your first name and last initial will be shown, e. Altec lansing recone kit, altec 604, 6048, 604c, rkal6048. This speaker has been in storage for about 25 years. For additional information, see the global shipping program terms and. So my friend bear, builds developed the excellent devices themselves and splendid speaker to. Altec lansing recone kit, repair recone kit for altec 604, 604c, 604 8, co ax. The advantage of dual concentric speakers is that the highlow frequency drivers act as a single point source, and allow the low and high frequency components of the sound arrive at the same time, more or less, and also in phase. Looking back, its easy to comprehend why im a believer in the concept of thought as object the notion that we bring into our lives that to which we give our attention. Great plains audio, whose staff includes a number of former altec employees, also manufactures their own modern version of the 604, which they call the 604e series ii. Altec lansing 6048g studio monitors 612c grills only with altec emblems.
The particular version i was able to acquire is the 604168x a design that was intended for anything but home audio. Jan 03, 2016 here is a great pair of altec 620 altec 6048g speakers. Duplex was the trade name given by altec lansing to its line of coaxial loudspeakers. Jul 24, 2017 follow the simplified 6048h eq crossover link to view an easytobuild crossover for your 6048g that includes the altec mf eq circuit. Vintage speaker systems create a unique sound that many collectors and music enthusiasts love. Urei 811 studio monitors with original altec 604 8g drivers.
Through the 1950s, and into the 1970s, the 604 was used by more recording and broadcast studios than all other monitor systems combined. View and download altec lansing n5018a crossover network schematic manual online. Amounts shown in italicized text are for items listed in currency other than singapore dollars and are approximate conversions to singapore dollars based upon bloombergs conversion rates. Gpa 6048hiiirev02 the great plains audio 6048h iii rev. Unfollow altec 604 e to stop getting updates on your ebay feed. The first 604 had a crossover frequency of 2000 hz. It was easily the equal of the jbl synthesis, and at a far lower cost. The model 19mr3 proved to be one of the best home theater speakers weve ever tested. For sale is a pair of gpa 6048hii drivers with matching stock gpa crossovers in custom 9cu. Supercrossover for altec model 6048h crossover upgrade model for altec 6048k supercrossover for altec model 6048k contact us for more information.
The software will tell you what to expect after plugging in a given set of variables. Save altec 604 to get email alerts and updates on your ebay. The altec 604ee series ii duplex for what they are are second to none. Has anyone measured the altec 6048h drivers frequency. I may stand corrected but i think the 604 8k was the last version produced. I fully cleaned them and can confirm they are working great. Instead, purchase our brand new 6048h iii loudspeaker, the best sounding 604 loudspeakercrossover. Altec lansing great plains audio custom 6048hii rare and unique opportunity. The n1500a is a seriesconnected type crossover that utilizes a second order highpass filter for the compression driver and a first order lowpass for the woofer. They feature altecs last all alnico 604 driver, the 6048g. The 604 was the same basic design using a 15inch lf driver, but with a larger 3 voice coil, individual alnico v magnets for the lf and hf drivers, and a cast aluminum frame.
This project is strongly influenced by jay fishers enclosure design, the primary difference altec 6048hii cabinet construction details to reduce weight. If i may ask, could someone post a photo of an altec big red monitor as this is the only 604 variation i have not yet seen. In early 2004 i acquired a pair of 6048hs, the last alnico magnet duplex model altec produced before they switched to ferrite magnets. The 418b replaced a big jbl ceramic e, i think in a sundown 100w head converted into a 1x15 combo. I have tried all different crossover adjustment and this is the flattest i. For headphones, speakers, accessories and nick jonas products. I next modeled the altec lansing n1500a crossover in calsod. Production of the series began in 1943, with the altec 601. Dipolo altec 604 con pre e finale macintosh, studer a 730. Currently, if you can afford the money for some real prograde equipment made in the usa, you can buy a 604 style speaker from either great plains audio or iconic, the 6048hii or 7048a respectively. Here is a great pair of altec 620 altec 6048g speakers. It remained in continuous production from 1943 to 1998 and set the standard for critical monitoring applications. Discussion in audio hardware started by dasacco, sep 24, 2014. I got them from a women who bough them for her recording studio back in the 70s.
Altec lansing gpa 6048hiii speaker cabinets with rick craig crossovers. Series crossovers are a rarity among speaker manufacturers these days. This project is strongly influenced by jay fishers enclosure design, the primary difference altec 604 8h ii cabinet construction details to reduce weight. Some questions about my altec 6048g speakers steve. Nov 27, 2012 dipolo altec 604 con pre e finale macintosh, studer a 730.
Lansing, but, rather, was the brainchild of george carrington. Altec gpa 6048hii in stonehenge birch ply cabinets local. Tell us, what is the ultimate altec duplex drivercabinetcrossover arrangement that you prefer thanks,shaan. Altec lansing diagrams, schematics and service manuals download for free. I wonder what most would consider the most desirable 604, since there are so many versions.
Altec lansing 6048k duplex studio monitor great plains. Altec lansing 604b phase corrected crossover wmf eq. The drivers and crossovers are in perfect operational and cosmetic condition. Enclosures are veneered very nicely but do have some. Some questions about my altec 6048g speakers steve hoffman. The altec duplex is arguably the most famous speaker driver ever made. The altec 604 168x loudspeaker has an 8 ohm woofer, a 16 ohm hf driver and came without crossover from the factory. Altec lansing 604 forever all models summary manual pdf download. Altec lansing gpa 604 8h iii speaker cabinets with rick craig crossovers.
My solution was to simplify the 6048h circuit by eliminating the switch and hi freq eq, substituting premium parts, and drawing it up. I have preferred twoway coaxial designs for many years, with tannoy being my numero uno and altec a close second. Altec a7s are plentiful and very few havent had some work done on them at some point in time. Ward, who was with altec from the erpi days in the late 1920s all the way through the sale of the company to gulton, confirmed to the owner of this site in writing that, contrary to the propaganda promulgated by jbl and others, the altec 604 duplex was not conceived by james b. Find great deals on ebay for altec 604 e and tannoy. Im about to put that 417 into 12 of a 2x12 combo super reverb ab763 innards not yet sure what to pair it with, but most seriously considering a weber. Restoring an altec 604e page 2 that provided just the slight amount of slop i neededand what i now realized was a perfectly round former and coil of consistent and correct thickness dropped neatly into what i also now realized was a perfectly made voicecoil gap. For the 604 and other similar lf drivers, bigger is better, whether vented or sealed. Vintage altec 604c speakers gearslutz pro audio community. We invite you to contact one of our sales team for more information, should you require it. Follow the simplified 6048h eq crossover link to view an easytobuild crossover for your 6048g that includes the altec mf eq circuit. Free altec lansing diagrams, schematics, service manuals.
Just click on the link above to go to our contact page. The gpa model n6048c crossover is the choice for use with our model 6048hiii when clear, natural, and uncolored sound reproduction are essential, and. As you mentioned, any kind of solid bass is pretty much awol. Alteclansing 6048h crossover revelations great plains. The great plains audio 6048hiii is a much improved version of the vintage ferrite magnet altec 604 family, and is currently in production. As this is the only 604 variation i have not yet seen. They sell the speaker, crossover, and they used to come in oak. Altec 604 duplex speakers and related technical audio. The goal would be to become the go to altec a7 mod guy. If i had your skills and knowledge, id trick them out to the max and then demo them at an audio show.
Currently, if you can afford the money for some real prograde equipment made in the usa, you can buy a 604 style speaker from either great plains audio or iconic, the 604 8h ii or 7048a respectively. Compared to the early production ferrite altec 60416x discussed elsewhere in these pages, the gpa 604 exhibits very smooth and extended response. To get in touch with our manufacturing partners directly, use the appropriate contact information below. Find great deals on ebay for altec 604 and altec speakers.
View and download altec lansing 604 forever all models summary manual online. Both of these versions definitely continue the altec design. For sale is a pair of gpa 604 8h ii drivers with matching stock gpa crossovers in custom 9cu. Pair of altec model 17 studio monitors, circa 1972. Ive never tried an alnico jbl, but compared to the ceramic, the altec is less abrasive in the higher frequencies. The difference is that the 604g uses felt between the horn and cone and the 604k uses a spider. Great plains audio is proud to offer the model 6048hii coaxial. In this video, early bender, of vintageaudio specialty firm hifi town, describes a notuncommon situation that mimics an open voicecoil but is in fact fairly easy to repair. I may stand corrected but i think the 6048k was the last version produced. Your rating choose how many stars you would like to rate the product.
Ive been looking at gpa 6048hiii and older 604605 altec models but. Altec lansing 604 8gmodel 17 floorstanding speakers user. Altec altec 6048hiii tolles gespann an v69a vintage. N5018a crossover network schematic crossover pdf manual download.
Given the noted success of jean hiragas demonstrations with his a5 votts, and the availability of information about the hiragasans crossover design, the a5 seemed the best candidate for adapting it to home listening use. Alteclansing 6048h crossover revelations great plains audio. I therefore recommend my simplified 6048h eq crossover for use on the 6048k by diy constructors. Altecs first duplex, and arguably the industrys first dualcoaxial driver. King had included a correction factor for vent length in his program. Compared to the early production ferrite altec 60416x discussed elsewhere in these pages, the gpa 604 exhibits continue reading.
This is new production made by gpa with original altec tooling. The particular version i was able to acquire is the 604 168x a design that was intended for anything but home audio. If your technical knowledge is limited there are places that will build them for you. This is a great peak over the years, i really enjoyed this link. During altecs glory yearsthe early 1940s through the early 1970sthose specs underwent a certain degree of evolution, as did the 604series driveunits themselves. I have both a 417 8h 12 and a 418b 15 and they are handsdown my favorite speakers. The 3154 altec woofer is excellent in every respect. There are a number of vintage speaker systems available to purchase on ebay, including the altec 604 vintage speakers. This one has it all for the 6048h follow the altec lansing phasecorrect 6048h crossover with mf eq link to view this circuit. Heres jeff markwarts site, there is a lot of good info on altec 604 drivers along with schematics that you can use or give to someone who can build them for you, if you like.
Nov 18, 2011 altec model 19 which caps for crossovers. The original crossover isnt exactly phase or time coherent, the treble is a little out of control. Turns out the crossover assembly technician who wishes but will be unable to. Altecs original prototypical 15 duplex speaker with field coil magnet. Its ability to reproduce program material with stunning transparency is. Coaxial or full range speakers for 20x24 audiokarma home. Note the original and b style horn is a true, multicellular horn cells go all the way back to the mouth. Altec 6048g first 604 with 16 diecast frame, retained 6 cell horn, went to 8 ohm. The altec 604168x loudspeaker has an 8 ohm woofer, a 16 ohm hf driver and came without crossover from the factory.
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