Ricci Posted August 26, 2020 Author Report Share Posted August 26, 2020 You could do something similar and shrink the cabinet and slot volume somewhat to better fit the 18". The 18 doesn't need as much airspace to work in. Quote Link to comment Share on other sites More sharing options...
Santiago G Posted August 27, 2020 Report Share Posted August 27, 2020 6 hours ago, Ricci said: You could do something similar and shrink the cabinet and slot volume somewhat to better fit the 18". The 18 doesn't need as much airspace to work in. Thanks one more time. I will using winisd as I'm better at it . Quote Link to comment Share on other sites More sharing options...
Chris Posted July 8, 2021 Report Share Posted July 8, 2021 Hi all I am looking at a DIY FOH build. For the top boxes looking at the Peter Morris PM90 and was wondering if this sub in two per side would be a good match. I plan to bite the bullet and spend once so the Eminence NSW6021-6 will be the driver. On that what would be ideal power amps to run the show Chris Quote Link to comment Share on other sites More sharing options...
peniku8 Posted July 8, 2021 Report Share Posted July 8, 2021 8 hours ago, Chris said: Hi all I am looking at a DIY FOH build. For the top boxes looking at the Peter Morris PM90 and was wondering if this sub in two per side would be a good match. I plan to bite the bullet and spend once so the Eminence NSW6021-6 will be the driver. On that what would be ideal power amps to run the show Chris https://www.avsforum.com/threads/diy-mid-hi-bms-coax-2x-12-b-c.3006048/ Almost the same setup, I think @dsl1 was very happy with it Quote Link to comment Share on other sites More sharing options...
Ricci Posted July 14, 2021 Author Report Share Posted July 14, 2021 On 7/7/2021 at 11:38 PM, Chris said: Hi all I am looking at a DIY FOH build. For the top boxes looking at the Peter Morris PM90 and was wondering if this sub in two per side would be a good match. I plan to bite the bullet and spend once so the Eminence NSW6021-6 will be the driver. On that what would be ideal power amps to run the show Chris 4 of these and a pair of PM90's should be quite a good sounding setup and compact for the performance available. I've not personally heard the PM90's but I've looked at the design and talked with guys who have built and heard them. The feedback and measurements are positive. Amplification will depend on budget, channel needs and available mains supply. You've got everything from Behringer at the cheap end on up through something like a PS X8. Would the PM90,s be active? Quote Link to comment Share on other sites More sharing options...
Nicholas Posted August 8, 2021 Report Share Posted August 8, 2021 Is the front panel necessary or can i use without it? How does affect the frequency response? Quote Link to comment Share on other sites More sharing options...
Ricci Posted August 9, 2021 Author Report Share Posted August 9, 2021 You can use it as a vented cab without the front panel. It is designed to be used either way. If you read the initial (LONG) posts I made it goes into some detail about what the front panel "should" do. I never had a chance to fully GP test this cab design yet. Quote Link to comment Share on other sites More sharing options...
CoastalJay Posted September 29, 2021 Report Share Posted September 29, 2021 With a massive shortage of available drivers, the Dayton PSS545 Velocity models quite well. I am going to try it and build 1, any chance of the DXF files to make my life easier on the CNC? Thank you Jason Quote Link to comment Share on other sites More sharing options...
Ricci Posted October 5, 2021 Author Report Share Posted October 5, 2021 CJ, Everything is in the first couple of posts. FYI. The Dayton has a large amount of inductance. It will modify the performance significantly if the effects weren't included in the model. Quote Link to comment Share on other sites More sharing options...
M88@FL450 Posted October 6, 2021 Report Share Posted October 6, 2021 Any Burst Output numbers to compare to SK and Skram? This is a great design without leaving much on the table for size. Quote Link to comment Share on other sites More sharing options...
CoastalJay Posted October 8, 2021 Report Share Posted October 8, 2021 Any chance of posting the DXF files? Thank you Quote Link to comment Share on other sites More sharing options...
Ricci Posted October 13, 2021 Author Report Share Posted October 13, 2021 I do not have DXF files developed for this. Your CNC provider would need to roll their own. This is the simplest design though. It shouldn't be very difficult. Quote Link to comment Share on other sites More sharing options...
Victor Posted November 25, 2021 Report Share Posted November 25, 2021 First post on this forum, hi Guys! Really like all the content here and wish I would find it sooner. Looks like a pair of Ckrams is my next dream build. Big thanks for the design and detailed information! Frankly would prefer to build Scrams instead but the size and weight scares me (me and my spine, to be precise), don't think I can handle it. The biggest sub I built so far is vented B&C 18DS115-8 and so it's very interesting for me to see how a couple of NSW21 in Ckram cabs will sound. I will do some measurements after I'm done and will post here. Quote Link to comment Share on other sites More sharing options...
Ricci Posted December 3, 2021 Author Report Share Posted December 3, 2021 Excellent Victor. Welcome to the forums. I look forward to your build. Quote Link to comment Share on other sites More sharing options...
Chris Posted August 1 Report Share Posted August 1 Hi Guys Has been awhile. Due to the AUD exchange rate and shipping the NSW21 and most other are bit pricey!! Have any of you modelled the SB Audience Nero? (see attach below) and would they be ok in this cabinet? Still looking at two per side and running a Powersoft K10 Also I was going to look at the PM90 but have just picked up a pair of EAW394 powered version in mint condition. Crossover select 80 or 110. So would the CKRAM be smooth up to 110? TIA Chris https://www.sbaudience.com/index.php/products/subwoofers/nero-21sw1100d/ Quote Link to comment Share on other sites More sharing options...
Ricci Posted August 2 Author Report Share Posted August 2 Hey Chris. The Nero will make some noise but it has lower xmax, power handling and less motor force. It probably wants a bit more cabinet volume. Hard to say with out trying it though. The Mms is light too indicating a cone that may flex at war volume. CKram should be useful up to 120Hz giver or take. Quote Link to comment Share on other sites More sharing options...
Nicholas Posted September 19 Report Share Posted September 19 Hey Ricci, Is it possible to make an modified isobaric version of that? I would like to fit 2x21s in a compact subwoofer like the CKRAM. Quote Link to comment Share on other sites More sharing options...
Ricci Posted September 28 Author Report Share Posted September 28 Isobaric doesn't really give much extra output. You are still limited by the xmax of 1 driver. it was a way to get extra motor force and a smaller cab back in the day. The modern 21's don't lack for motor force. It's a huge money sink for not much gain. The CKRAM is already small for a single 21. Quote Link to comment Share on other sites More sharing options...
Leimahmood Posted November 21 Report Share Posted November 21 For movies Skram vs ckram Which one is good Quote Link to comment Share on other sites More sharing options...
klipsch Posted November 22 Report Share Posted November 22 Both! Which one fits better in your space? Which one is easier / cheaper to make? Are you only making one sub? Do you already have drivers? Quote Link to comment Share on other sites More sharing options...
Leimahmood Posted Saturday at 07:58 PM Report Share Posted Saturday at 07:58 PM On 11/22/2022 at 6:24 PM, klipsch said: Both! Which one fits better in your space? Which one is easier / cheaper to make? Are you only making one sub? Do you already have drivers? i have one pair of skram box with b&c 21ds115 4ohm So now i purchased some lavoce 21 drivers so thinking for ckram Quote Link to comment Share on other sites More sharing options...
klipsch Posted Sunday at 02:11 AM Report Share Posted Sunday at 02:11 AM I'd just make more skrams, but would love to see you make ckrams and share your experiences Quote Link to comment Share on other sites More sharing options...
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