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» Termpro Audio Forum » Installer's Corner » System Design » 2 MOJO 15's an a 4Kdub, port help

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Author Topic: 2 MOJO 15's an a 4Kdub, port help
nycdak
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Buildin a box for the MOJOs on 4KW runnin 2 ohm. Box is 8 cubes, subs down, port down. This is a streetbeater. How much port should I run? Its goin in an extended cab truck. Slot port... How deep? Thanx
Posts: 39 | From: usa | Registered: Jan 2007  |  IP: Logged | Report this post to a Moderator
nycdak
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Jeez, who you gotta blow to get some suggestions round here? [Roll Eyes]
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nycdak
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Got it figured out, thanx for all da help [Roll Eyes]
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ssaudio
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With the mojo woofers that box volume should work well for a compact one. they dont work well with high port volumes. in your vehicle the loudest of the lowest frequency range (around 37.5hz tuning) will be acheived with around 90 to 100 cubic inches of port at most. i would go 80 in that box if thats the volume before the displacement of everything

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nycdak
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80 inches is exactly what I did and It sounds really good. Alot better response than my other box. Thanx for the reply.
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Sinister-David
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and why running that amp at 2 ohm for? i would run it at 1 ohm to get the full power out of it. It is 1 ohm stable

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Loudcav
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quote:
Originally posted by Sinister-David:
and why running that amp at 2 ohm for? i would run it at 1 ohm to get the full power out of it. It is 1 ohm stable

unless he has the brand new mojos that they just released his only options were 2 ohms or 1/2 ohm

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CharlesG5019
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He's running one battery under the hood that is all, so no half ohm at this time!!!!!

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Sinister-David
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quote:
Originally posted by Loudcav:
quote:
Originally posted by Sinister-David:
and why running that amp at 2 ohm for? i would run it at 1 ohm to get the full power out of it. It is 1 ohm stable

unless he has the brand new mojos that they just released his only options were 2 ohms or 1/2 ohm
thats not true i was running at 1 ohm with the older Mojo M3's np

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*mikemex*
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he uses 2 mojos dual 2 ohms !!!

he cant go at 1 ohm!!

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Posts: 859 | From: UPN., MICHOACAN,MEX. | Registered: May 2001  |  IP: Logged | Report this post to a Moderator
MOJOMAN
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mojos are quad 1's or dual 2's.
and all he could run would be
dual 2's= 4 or 1 ohm per sub
quad 1's= 1/4 or 1 or 4 ohm per sub
new mojo
dual 2's= same as above
dual 4's= 2 or 8 per sub
quad 1's= same as above
so like loudcav said,with the old mojos,there is no way of having a 1 ohm load on 2 subs.
you could have had 1 ohm per sub, but thats the only way.
i probably know where you got mixed up, you probably had the 15-M315D4, which is a M3 series dual 4 sub. The label on the box is deceiving, it shows as a m3 mojo, but its not, they used that label on all m3 series and mojo series subs to save money and just checked the mojo number if that was what was packed in it.. mojo is a series by itself.
customers used to drive me crazy wanting to know why that one mojo 15 cost $600 and the other one cost $250...lol..until i pulled them out of the box [Eek!]

[ 02-13-2008, 02:59 AM: Message edited by: MOJOMAN ]

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