wuzzzer Posted July 6, 2022 Share Posted July 6, 2022 They're factory networks. Quote Link to comment Share on other sites More sharing options...
Islander Posted July 8, 2022 Share Posted July 8, 2022 There’s something a bit confusing here. These appear to be the last year of the 1st generation La Scalas, and are called AL4. The latest model of the La Scala II is called the AL5. Then what’s the designation of the earlier La Scala IIs, the 2006-2019 model? They are post-AL4 and pre-AL5. That doesn’t make much sense. Also, the “owner’s manual” is a leaflet that includes the La Scala and the Klipschorn, and mostly just covers the unboxing instructions. Quote Link to comment Share on other sites More sharing options...
OO1 Posted July 8, 2022 Share Posted July 8, 2022 On 7/8/2022 at 4:11 AM, Islander said: There’s something a bit confusing here. These appear to be the last year of the 1st generation La Scalas, and are called AL4. The latest model of the La Scala II is called the AL5. Then what’s the designation of the earlier La Scala IIs, the 2006-2019 model? They are post-AL4 and pre-AL5. That doesn’t make much sense. Also, the “owner’s manual” is a leaflet that includes the La Scala and the Klipschorn, and mostly just covers the unboxing instructions. the Al-4 1 piece cab is not a Lascala II , it's an AL4 . the LS II series models are all 2 piece cabs , tagging on the k-77 Tweeter , but they also carry the designation AL-4 the AL-4 series can be a 1 piece or 2 piece cabs , but the 2 piece cab adds the Designation LS II ........so an AL-4 LS II . the AL-5 is now a series of it's own with the Celestion tweeter ......it is no longer an LS II , the AL-4 LS II stopped when the K-77 was phased out . 1 1 Quote Link to comment Share on other sites More sharing options...
Islander Posted July 8, 2022 Share Posted July 8, 2022 5 hours ago, RandyH said: the Al-4 1 piece cab is not an Lascala II , it's an AL4 . the LS II series models are all 2 piece cabs , tagging on the k-77 Tweeter , but they also carry the designation AL-4 the AL-4 series can be a 1 piece or 2 piece cabs , but the 2 piece cab adds the Designation LS II ........so an AL-4 LS II . the AL-5 is now a series of it's own with the Celestion tweeter ......it is no longer an LS II , the AL-4 LS II stopped when the K-77 was phased out . I don’t think the AL5 comes with a Celestion tweeter. It may no longer be a K-77, but the Celestion K-693 tweeter is part of the Heritage Jubilee, not the La Scala AL5. Quote Link to comment Share on other sites More sharing options...
OO1 Posted July 8, 2022 Share Posted July 8, 2022 29 minutes ago, Islander said: I don’t think the AL5 comes with a Celestion tweeter. It may no longer be a K-77, but the Celestion K-693 tweeter is part of the Heritage Jubilee, not the La Scala AL5. here you go , the tweeter is the Celestion CDX07-1075 .....K-771 1" Polyimide . ,used on both the AL-5 and AK-6 as a replacement for the k-77 ,it is an OEM tweeter , matched with a Klipsch lens /phase plug , an amazing little tweeter designed for line arrays ......109dB https://d2um2qdswy1tb0.cloudfront.net/product-specsheets/La-Scala-2018-Spec-Sheet-v01.pdf https://celestion.com/product/cdx07-1075/ 1 Quote Link to comment Share on other sites More sharing options...
Schu Posted July 8, 2022 Share Posted July 8, 2022 is that another phase plug... 1 Quote Link to comment Share on other sites More sharing options...
Deang Posted July 8, 2022 Share Posted July 8, 2022 nm Quote Link to comment Share on other sites More sharing options...
pbphoto Posted July 8, 2022 Share Posted July 8, 2022 To add a wrinkle to the discussion, in this 2009 thread, Bob Crites talked about tweaks to the AL-4 and AK-4 networks. Bob called the modified crossovers AL-5 and AK-5 but maybe these were not the official Klipsch names? Maybe they should be called AL-4v2 and AK-4v2. Quote Link to comment Share on other sites More sharing options...
OO1 Posted July 8, 2022 Share Posted July 8, 2022 Aye Aye Sir Quote Link to comment Share on other sites More sharing options...
billybob Posted July 8, 2022 Share Posted July 8, 2022 Dis...missed! Quote Link to comment Share on other sites More sharing options...
OO1 Posted July 8, 2022 Share Posted July 8, 2022 At ......Ease , Quote Link to comment Share on other sites More sharing options...
Islander Posted July 8, 2022 Share Posted July 8, 2022 Stand easy. Police the area! Quote Link to comment Share on other sites More sharing options...
Deang Posted July 13, 2022 Share Posted July 13, 2022 On 7/8/2022 at 1:13 PM, pbphoto said: To add a wrinkle to the discussion, in this 2009 thread, Bob Crites talked about tweaks to the AL-4 and AK-4 networks. Bob called the modified crossovers AL-5 and AK-5 but maybe these were not the official Klipsch names? Maybe they should be called AL-4v2 and AK-4v2. Read Bob's comments carefully. Both the AL-4 and AK-4 had resistors in the low pass tweaked when they went to two piece MDF build of the LaScala (LaScala II), and the sealed back Klipschorn. Those networks became AL-5 and AK-5. Quote Link to comment Share on other sites More sharing options...
pbphoto Posted July 13, 2022 Share Posted July 13, 2022 53 minutes ago, Crankysoldermeister said: Read Bob's comments carefully. Both the AL-4 and AK-4 had resistors in the low pass tweaked when they went to two piece MDF build of the LaScala (LaScala II), and the sealed back Klipschorn. Those networks became AL-5 and AK-5. Did Klipsch refer to them by those names? Seems weird to have a La Scala 2 with an AL-5 crossover, then 10 years later, come out with a La Scala AL-5 with a new tweeter. Quote Link to comment Share on other sites More sharing options...
Schu Posted July 13, 2022 Share Posted July 13, 2022 and yet true. Quote Link to comment Share on other sites More sharing options...
OO1 Posted July 14, 2022 Share Posted July 14, 2022 nope -the AL-4 network relates to a Lascala AL-4 mated to the k-77 -the AK-4 network is for a khorn mated to a k-77 -the AK-5 crossover is for the AK-5 Khorn with enclosed backs - and a k-77 tweeter -the AL-5 crossover is for the AL-5 Lascala using a Celestion tweeter -there is no such thing as an AL- 5 network for the AL-4 Lascala with the K-77 . -the khorn AK-6 network is for the khorn AK-6 , it uses the Celestion tweeter - the latest Lascala crossover and Lascala model designation will always be 1 numeral behind the latest khorn 's crossover and model designation - Quote Link to comment Share on other sites More sharing options...
Deang Posted July 14, 2022 Share Posted July 14, 2022 The AL-4 was used in the original La Scala build for short time. When they went to the MDF build, they went to the AL-5. I mean, I was in Indy when they introduced it, and Mark Kaufman talked about how they had to mod the network -- which I thought he called the AL-5. So, did they make a silent change in the AL-5 network when they went to the Celestion tweeter, and just continued to call it the AL-5 with a revision number on the board? @Chief bonehead Quote Link to comment Share on other sites More sharing options...
Deang Posted July 14, 2022 Share Posted July 14, 2022 Information originally provided by Jim Hunter and Mark Kauffman of Klipsch Audio Technologies, LLC May 2001 The Atlas PD-5VH (Current version of the previous K-55-V) is modified slightly and christened the K-55-X. The various components of the K-77-M tweeter are either retooled or sourced from the new owners of the tooling and assembled by a third party. This variant of the tweeter is designated the K-77-F. An entirely new network (AL-4) was created to accommodate these driver changes. Fusing is eliminated in favor of a polyswitch for tweeter protection. The tweeter on the La Scala was flush mounted for the first time using "Z" brackets. A metal input panel with binding posts in a bi-wire configuration replaced the traditional screw type barrier block. December 2005 The La Scala II debuted as the first "finished" version of this model featuring a two piece veneered cabinet utilizing 1" MDF instead of the traditional 3/4" plywood. The AL-5 network was introduced to compensate for the improvement in low frequency response resulting from the change in cabinet construction. The HF and LF cabinets stacked together using thick rubber isolating spacers. Finish variants were reduced from 6 to 3. April 2006 The horn portion of the K-77-F tweeter was re-tooled to include a recessed flange eliminating the need for the separate "Z" bracket and attachment rivets, the new designation is the K-77-D. This also allowed the updating of pre-Z bracket La Scalas (prior to May 2001) to flush tweeter status without motor board modification. 2005 Klipschorn for comparison: Dec 2005: The Type AK-5 network was introduced to compensate for the improvement in low frequency response resulting from the addition of a horizontal wall seal to the top of the low frequency cabinet. The style "B" cabinet was discontinued by the elimination of the inset "intermediate collar" and visible "woofer top" panel in favor of a 3/8" gap between the cabinets. The long standing angle brackets, hanger bolts and wing nuts used to attach the HF and LF cabinets together were replaced with thick rubber spacers, on the LF cabinet, indexed into recesses on the HF cabinet. Quote Link to comment Share on other sites More sharing options...
pbphoto Posted July 15, 2022 Share Posted July 15, 2022 It appears like somebody in the marketing department decided to call the latest La Scala "AL5" even though the LS2 had been using the AL5 crossover for 15+ years? Quote Link to comment Share on other sites More sharing options...
Klipsch Employees Chief bonehead Posted July 15, 2022 Klipsch Employees Share Posted July 15, 2022 On 7/8/2022 at 10:08 AM, Islander said: I don’t think the AL5 comes with a Celestion tweeter. It may no longer be a K-77, but the Celestion K-693 tweeter is part of the Heritage Jubilee, not the La Scala AL5. Yes it does. The k771 1 1 Quote Link to comment Share on other sites More sharing options...
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