tagger Posted December 18, 2015 Share Posted December 18, 2015 (edited) I am planning to build new cabinets for my Heresy I's, whose cabinets were heavily damaged in my recent basement flood. I figured since I'm building from scratch, perhaps I could make some design improvements (for my particular room). I understand the existing cabinet is smaller than ideal, and sacrifices some bass response that the K-22 could otherwise achieve. Does anyone know the ideal cabinet size for the K-22, based on T/S parameters? For those interested, I also plan to use a slightly slanted motorboard, and swap the K-700 horns for Selenium HM25-25's. Any comments on these ideas are also welcome! EDIT: The HM25-25 horns are out -- their minimum frequency is 1,200 Hz, too high for a Heresy squawker. Edited December 19, 2015 by tagger Quote Link to comment Share on other sites More sharing options...
teaman Posted December 18, 2015 Share Posted December 18, 2015 (edited) I am just thinking aloud here, I wonder if it would be beneficial to add a passive radiator on the rear of the new cabinets. It might bring you into the Forte range of bass by that simple addition. Edited December 18, 2015 by teaman Quote Link to comment Share on other sites More sharing options...
John Chi-town Posted December 18, 2015 Share Posted December 18, 2015 Get a pair of forte II. Problem solved. Best regards, John 3 Quote Link to comment Share on other sites More sharing options...
jimjimbo Posted December 18, 2015 Share Posted December 18, 2015 Get a pair of forte II. Problem solved. Best regards, John Agree 1 Quote Link to comment Share on other sites More sharing options...
MORE KLIPSCH PLEASE Posted December 18, 2015 Share Posted December 18, 2015 Yea I'm with John and Jim on this..... Part the Hersey's out and put the funds toward the Forte's..... MKP :-) 1 Quote Link to comment Share on other sites More sharing options...
tagger Posted December 18, 2015 Author Share Posted December 18, 2015 I owned a pair of Forte II's about 5 years ago, and sold them after I built a pair of Cornscalas (or is it Alcorns...). I should have kept them as backups! The Heresies I'm using in my basement as part of a 5.2 surround setup with three Heresies up front. While I agree that the Fortes would pretty much give me what the Heresies give me but with deeper bass, I like having three identical speakers up front, and a Forte center channel is just too tall. The Heresy center is short enough to leave at least a couple inches between it and the bottom of my projection screen. So, does anyone know what a more ideal cabinet volume for the Heresy would be? Quote Link to comment Share on other sites More sharing options...
Turbox Posted December 19, 2015 Share Posted December 19, 2015 im almost positive that there is a pair of klipsch tangent speakers that are larger than the heresy, and ported using essentially the same drivers. i cant remember the model off hand. 2 Quote Link to comment Share on other sites More sharing options...
Marvel Posted December 19, 2015 Share Posted December 19, 2015 They are Tangent 400 speakers. Exact same components as Heresy II, including the crossover, in a taller ported cabinet. A good friend of mine has a psir of them snd they have way more bass. Plus, they get the mids and tweets closer to ear level. Bruce Quote Link to comment Share on other sites More sharing options...
WMcD Posted December 19, 2015 Share Posted December 19, 2015 I think we have to find the T-S parameters for the K-22 and load them into a sealed cabinet calculator. Can anyone help? WMcD Quote Link to comment Share on other sites More sharing options...
jason str Posted December 19, 2015 Share Posted December 19, 2015 Post some numbers and i can whip something up. Quote Link to comment Share on other sites More sharing options...
BillWojo Posted December 19, 2015 Share Posted December 19, 2015 The OP has a damaged pair of Heresy's with good drivers and most of you guys are telling him to buy something else. He has nothing to lose by building new cabinets and a lot to gain if he gets the numbers right. I'm looking forward to seeing how this turns out. Please post pics! BillWojo 1 Quote Link to comment Share on other sites More sharing options...
jason str Posted December 19, 2015 Share Posted December 19, 2015 If your cabinet was waterlogged be sure to check the backside of the woofer cone first to make sure its not been eaten away by mold & mildew before going any further. Quote Link to comment Share on other sites More sharing options...
tagger Posted December 19, 2015 Author Share Posted December 19, 2015 (edited) I pulled the components and all appear unharmed. The water damage to the cabinets was due to sitting in three inches of water for a day. I suppose once dried they wouldn't have been functionally worse for wear, but since they were already in pretty shoddy condition anyway I figured why not take this opportunity to build brand new cabinets and possibly make some improvements. I found these Thiele/Small parameters for the K22E: Fs=33hzQms=4.61Vas=6.02 cu ftX-max=3.91mmSd=86 sq inQts=.351No=1.55%SPL=94.8dB/2.83V/1MQes=.38Re=6.8Le=1mH (not sure of this)Z=8 ohmsBl=15Pe=100W Edited December 19, 2015 by tagger Quote Link to comment Share on other sites More sharing options...
Thaddeus Smith Posted December 19, 2015 Share Posted December 19, 2015 The OP has a damaged pair of Heresy's with good drivers and most of you guys are telling him to buy something else. He has nothing to lose by building new cabinets and a lot to gain if he gets the numbers right. I'm looking forward to seeing how this turns out. Please post pics! BillWojo 1 Quote Link to comment Share on other sites More sharing options...
jason str Posted December 19, 2015 Share Posted December 19, 2015 According you your numbers making the box larger is not going to do much, add 10% of volume to the factory cabinet volume if you like but don't expect miracles. Repairing the old cabinets would be much less work in my opinion. Quote Link to comment Share on other sites More sharing options...
djk Posted December 19, 2015 Share Posted December 19, 2015 " Fs=33hzQms=4.61Vas=6.02 cu ftX-max=3.91mmSd=86 sq inQts=.351No=1.55%SPL=94.8dB/2.83V/1MQes=.38Re=6.8Le=1mH (not sure of this)Z=8 ohmsBl=15Pe=100W " I used these parameters years ago to build a 5,000 cu in box tuned to 33hz, or 10,000 cu in for two. Used with a Q=2 high-pass filter at 33hz they sounded incredible. I used an Atlas PD4V on an Electro-Voice 8HD horn, and the same Motorola KSN1016A tweeter Klipsch used in the MCM1900 five-tweeter array. 1 Quote Link to comment Share on other sites More sharing options...
BillWojo Posted December 19, 2015 Share Posted December 19, 2015 Thaddeus, I am fairly new here. What has that got to do with the OP question. I see an intelligent question asked and folks are telling him not to bother. From the research that I have been able to find, one of the reasons the Heresy's lack a lot of low end grunt is the smaller cabinet size. I have Heresy's and wonder if a larger cabinet wouldn't help the bass myself. Remember, this speaker was designed as a center fill channel. LaScalas , Khorns, etc were to provide the bass. djk seems to have provided a thoughtful answer. Thanks BillWojo Quote Link to comment Share on other sites More sharing options...
tagger Posted December 19, 2015 Author Share Posted December 19, 2015 DJK, do you remember what your port dimensions were for the 5,000 cu in box? From what I gather the Tangent 400's are approximately 5400 cu in with two ports that are 3 in diameter and 5 in long each. What software are most folks here using for speaker cabinet design? Quote Link to comment Share on other sites More sharing options...
teaman Posted December 19, 2015 Share Posted December 19, 2015 I did something similar with my KG4's. In my avitar is one of the towers and the center. I put the drivers and crossover into a four ft tower and eliminated the passive on the rear for a smaller footprint. Sine it is set up in a HT setting the Sub pulls the bottom end for me and the KG4 drivers sound awesome set up in a tower. I would think the Heresy would do well in a taller cabinet as well. No use in buying new speakers when you already have drivers. Quote Link to comment Share on other sites More sharing options...
ClintonH Posted December 20, 2015 Share Posted December 20, 2015 DJK, do you remember what your port dimensions were for the 5,000 cu in box? From what I gather the Tangent 400's are approximately 5400 cu in with two ports that are 3 in diameter and 5 in long each. What software are most folks here using for speaker cabinet design? If your wanting approx the same tune on a 5 cuft box it would be around 42hz, 2 3" X 5.5 will get you there. That is approx what your 5" long ports get you in the 5.4 Cuft box if you take off about .3 displacement for drivers etc. Might be more but just throwing it out there. WinISD is a good free program to use. Quote Link to comment Share on other sites More sharing options...
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