Amphicar Posted August 9, 2021 Author Share Posted August 9, 2021 I think this is as large as I will go until I have a larger listening area. TV is 55” (too big for something I almost never use) Quote Link to comment Share on other sites More sharing options...
Knight2001DTS Posted February 23, 2022 Share Posted February 23, 2022 (edited) Hi all Some great info here!! I have recently purchased some K-45 drivers and would like to do a 904 clone cabinet as well! Is anyone able to provide a measurement for the port diameter and length as measured off an original KPT-904-LF? ( MM if possible please ) The rest of the dimensions are already available from spec Thanks in advance! Edited February 23, 2022 by Knight2001DTS Typo Quote Link to comment Share on other sites More sharing options...
homatose Posted February 24, 2022 Share Posted February 24, 2022 On 2/23/2022 at 9:28 AM, Knight2001DTS said: Hi all Some great info here!! I have recently purchased some K-45 drivers and would like to do a 904 clone cabinet as well! Is anyone able to provide a measurement for the port diameter and length as measured off an original KPT-904-LF? ( MM if possible please ) The rest of the dimensions are already available from spec Thanks in advance! I recently acquired a pair 904's and 456's. The port opening is 4" and depth is 3.75". 1 Quote Link to comment Share on other sites More sharing options...
Knight2001DTS Posted February 24, 2022 Share Posted February 24, 2022 Thanks so much homatose! That makes my job a lot easier to know those measurements! . Quote Link to comment Share on other sites More sharing options...
Knight2001DTS Posted March 8, 2022 Share Posted March 8, 2022 Hi Homatose, Are you able to provide some further measurements to assist with placement of the drivers and ports please? Measurements such as the distance to centre of the drivers from top and bottom of the front baffle, and spacing of the ports from left to right etc? Is there any internal bracing? If so, is it possible to take a photo inside the box to share here? This will help produce an accurate box I got delivery of my 4" ports today - getting excited about this build! Thanks again! Quote Link to comment Share on other sites More sharing options...
Amphicar Posted March 15, 2022 Author Share Posted March 15, 2022 Happy to answer questions and take photos/measurements as needed. 1 Quote Link to comment Share on other sites More sharing options...
Knight2001DTS Posted March 16, 2022 Share Posted March 16, 2022 Thanks Amphicar! I'll draw up a quick diagram with some needed measurements and post back later Quote Link to comment Share on other sites More sharing options...
Knight2001DTS Posted March 18, 2022 Share Posted March 18, 2022 Hi guys.... These are the measurements I need to make an accurate clone of the box.....spacing of ports and drivers (A - F) taken from the edge of the baffle, not the edge of the box A - centre of top driver to edge of baffle B - distance between centre of drivers C - distance between centre of ports (I have assumed all will be equal spacing) D - centre of bottom driver to edge of baffle E - centre of port to edge of baffle (vertical) F - centre of port to edge of baffle (horizontal) I am not sure if these measurements will be nice round numbers in inches, so if it easier to give measurements in mm, that's fine too. These boxes are not so common here in Australia. Thanks heaps for your assistance! Quote Link to comment Share on other sites More sharing options...
Amphicar Posted March 18, 2022 Author Share Posted March 18, 2022 13 hours ago, Knight2001DTS said: Hi guys.... These are the measurements I need to make an accurate clone of the box.....spacing of ports and drivers (A - F) taken from the edge of the baffle, not the edge of the box A - centre of top driver to edge of baffle B - distance between centre of drivers C - distance between centre of ports (I have assumed all will be equal spacing) D - centre of bottom driver to edge of baffle E - centre of port to edge of baffle (vertical) F - centre of port to edge of baffle (horizontal) I am not sure if these measurements will be nice round numbers in inches, so if it easier to give measurements in mm, that's fine too. These boxes are not so common here in Australia. Thanks heaps for your assistance! Great image, clear instructions, Ill get you some measurements asap. 1 Quote Link to comment Share on other sites More sharing options...
homatose Posted March 19, 2022 Share Posted March 19, 2022 Hi Knight, Here are the measurements (in inches) that I took this evening. If another member (i.e. Amphicar) could confirm you should be all set. I tried to be precise when it came to edge to edge, though center of dust cap/port to edge measurement is a little tricky. Note, these cabinets use some really thick birch! A. 9.5" B. 16" C. 6.25" D. 14.5" E. 4.25" F. 4" 1 Quote Link to comment Share on other sites More sharing options...
Knight2001DTS Posted March 19, 2022 Share Posted March 19, 2022 Awesome thankyou!! These will help a LOT Hopefully similar measurements from Amphicar and then I can get to work on cutting some panels and holes Can you also see if there is any internal bracing by popping your mobile phone in one of the ports and taking a snap with the flash on for me? Thanks again! Quote Link to comment Share on other sites More sharing options...
homatose Posted March 19, 2022 Share Posted March 19, 2022 there is one brace between the woofers that spans from front to back. looks to be at least 1" thick by 3" wide. 1 Quote Link to comment Share on other sites More sharing options...
Knight2001DTS Posted March 20, 2022 Share Posted March 20, 2022 Fantastic! Thanks for that - I figured there would have to be some kind of bracing for a baffle that size, and it wont affect the overall volume by much I won't be doing a HF/LF crossover though, as they will be used solely for LF Coincidentally, if you don't mind me asking, what are the dimensions of the visible baffle? (height and width) Thanks heaps for the photo! Quote Link to comment Share on other sites More sharing options...
homatose Posted March 21, 2022 Share Posted March 21, 2022 The front baffle is 25 3/8" wide by 40 1/2" tall. There is a 3/4" thick casing surrounding the baffle and it protrudes 5/8" outward. 1 Quote Link to comment Share on other sites More sharing options...
Knight2001DTS Posted March 22, 2022 Share Posted March 22, 2022 Thanks heaps for that!! Quote Link to comment Share on other sites More sharing options...
Amphicar Posted March 23, 2022 Author Share Posted March 23, 2022 On 3/19/2022 at 3:59 AM, Knight2001DTS said: Awesome thankyou!! These will help a LOT Hopefully similar measurements from Amphicar and then I can get to work on cutting some panels and holes Can you also see if there is any internal bracing by popping your mobile phone in one of the ports and taking a snap with the flash on for me? Thanks again! Sorry for the delay. Just measured, @homatose a-f measurements match what I got. 2 Quote Link to comment Share on other sites More sharing options...
Knight2001DTS Posted March 30, 2022 Share Posted March 30, 2022 Thankyou for the measurements guys! I'm going to cut the baffle approx 5mm larger on all sides than the actual measurements, so that I can route a 5mm channel on all 4 inside edges to recess it into I just have one question though regarding the dimensions.... If the front baffle is 25 3/8" wide, I am getting a front baffle width of 26.75" width using 3 x C (6.25") and 2 x F (4"). I am assuming all 4 ports are evenly spaced Can I ask if you can please confirm the C and F measurements, and the front baffle width? Or even just a photo with a tape measure across the front baffle, as it may be hard to judge the centre of the ports. Thankyou so much for your time and effort!!!! Quote Link to comment Share on other sites More sharing options...
Khornukopia Posted March 30, 2022 Share Posted March 30, 2022 6 hours ago, Knight2001DTS said: I'm going to cut the baffle approx 5mm larger on all sides than the actual measurements, so that I can route a 5mm channel on all 4 inside edges to recess it into That appears to be the way the factory cabinets are made. 1 Quote Link to comment Share on other sites More sharing options...
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