HELP!!! DOUBLE HORN 18 DESIGNS |
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Xmax extreme
Registered User Joined: 23 May 2006 Location: Pilipinas Status: Offline Points: 308 |
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Posted: 12 September 2006 at 10:31pm |
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[QUOTE=tb_mike]
Increasing width will
Increase front chamber volume(good,lowers cutoff slightly)
Increase rear chamber volume(not good,if its too big,excursion increases below cutoff.)
Increase the horn area along its entire length will result in even the horn near throat being wrong.
Cutoff wont be lower because the length is the same.
It would probably well enough though.
thanks tb_mike, took me quite some time to reply, ive been out of town for weeks.
best regards,
xmax extreme
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Xmax extreme
Registered User Joined: 23 May 2006 Location: Pilipinas Status: Offline Points: 308 |
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tb_mike
Old Croc Joined: 01 October 2004 Location: New Zealand Status: Offline Points: 2744 |
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Increasing width will
Increase front chamber volume(good,lowers cutoff slightly)
Increase rear chamber volume(not good,if its too big,excursion increases below cutoff.)
Increase the horn area along its entire length will result in even the horn near throat being wrong.
Cutoff wont be lower because the length is the same.
It would probably well enough though.
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tb_mike
Old Croc Joined: 01 October 2004 Location: New Zealand Status: Offline Points: 2744 |
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It works for me.Are you using some stupid AOL browser or similar?i always see people having problems with those.
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gingerbiscuit69
Registered User Joined: 23 September 2005 Location: United Kingdom Status: Offline Points: 2540 |
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*small* mobile disco ..... ummm, these are huge mate, and require big tops and big amps, and make some serious bass! (ie: 1000people+ crowd)
if your volume mad build a G-Sub, that'll cover your needs easily and be easier to find drivers for. |
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bosbacs
Registered User Joined: 25 August 2006 Location: Philippines Status: Offline Points: 23 |
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Hi! I am planning to build this enclosure for my small disco mobile here in the Philippines, I have some questions to clarify.
1. I dont have access to high quality speaker, I only have P Audio, can I use P Audio as replacement for Selenium speaker?
2. Do I need to build 2 or more per side to achieve its performance or one per side is enough?
3.What would be the cut-off frequency for my Active cross-over using this HB1805C1 enclosure?
Hoping to hear you very soon.
Thank you very much,
Very sincerely,
Bosbacs Edited by bosbacs - 27 August 2006 at 9:01pm |
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Thanksalot
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Xmax extreme
Registered User Joined: 23 May 2006 Location: Pilipinas Status: Offline Points: 308 |
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Hi Angus,
Wow, thanks for that very clear explainations, now i have the a better understanding with the plans and by using the exact driver.
Before I have the idea to increase the width when spilt in to two since I have compared it to the 186 plan which has a wider width. And as you have mentioned from the original plans, it has only 42 liters volume, so i pressumed that increasing the volume would give me a lower frequency cut-off and I could use another driver.
Well, thanks again angus.
Best regards,
Xmax extreme
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angus
Young Croc Joined: 10 August 2005 Location: TW, Kent, UK Status: Offline Points: 516 |
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Hi Xmax extreme,
I have not read the forum in detail for some time now (a couple of months maybe) so I have only just seen your post. Sorry about that. If you want good performance from this, and you want to split it up into two boxes, then you need to split the box exactly into two. The internal width of each box would be 960 / 2 = 480mm and all other internal measurements would be the same. If you increase the (external) width to 600mm, the internal width would be: 600 - (2*20) = 560mm This is 80mm bigger than the plans. This would have the effect of increasing the volume of the box by: 80 / 480 * 100 = 16.66% The volume in the plan is given as 42 litres, so this would increase to 56 litres I reckon. I can't comment on what exact effect this will have on the sound of the finsihed cabinet but I reckon if you want the best results use the specced driver and build the cabinet as close to the plans as possible. Cheers, Angus |
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Xmax extreme
Registered User Joined: 23 May 2006 Location: Pilipinas Status: Offline Points: 308 |
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Hi angus, need help with the selenium cab designs. you've said that it can be split into two in order to have one 18's in a single cab.
What would be the effect if the width will be increased? from the original plans the width is 100 cm, if split in two, 50 cm or 19.6 inches. What would be the effect concerning the quality of sound if i will increase the width to let say 23.6 inches or 60cm while the rest of the measurements remains the same.
thanks for your help.
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Xmax extreme
Registered User Joined: 23 May 2006 Location: Pilipinas Status: Offline Points: 308 |
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Hi angus, need help with the selenium cab designs. you've said that it can be split into two in order to have one 18's in a single cab.
What would be the effect if the width will be increased? from the original plans the width is 100 cm, if split in two, 50 cm or 19.6 inches. What would be the effect concerning the quality of sound if i will increase the width to let say 23.6 inches or 60cm while the rest of the measurements remains the same.
thanks for your help.
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MixMan X
Registered User Joined: 18 July 2005 Location: United Kingdom Status: Offline Points: 382 |
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I reckon you would be looking at well over £500 for a pair, not including drivers, built out of birch ply to a professional finish. |
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DJ Dave
Registered User Joined: 28 September 2005 Location: United States Status: Offline Points: 3 |
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