sub choices
#1
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sub choices
i'll be running my entire system with an audiobahn 6x75w rms amp, and would like (most likely) a single 10" sub. any suggestions on what sub i should get? Ill bridge two of the outputs, should i be looking at single or duel voice coils? i want good clarity, not too loud but enough to feel it on the highway with the windows down. also, i'm gonna attempt to build a custom fiberglass enclosure, when its recommended that a sub have 1.0 cubic ft in a sealed box, does that include the space taken up by the cone of the speaker (like would a 1'x1'x1' box work?) or do i need to increase the size of the enclosure by the displacement of the sub?
thanks,
andrew
thanks,
andrew
#2
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Re: sub choices
Originally posted by Meyers
i'll be running my entire system with an audiobahn 6x75w rms amp, and would like (most likely) a single 10" sub. any suggestions on what sub i should get? Ill bridge two of the outputs, should i be looking at single or duel voice coils? i want good clarity, not too loud but enough to feel it on the highway with the windows down. also, i'm gonna attempt to build a custom fiberglass enclosure, when its recommended that a sub have 1.0 cubic ft in a sealed box, does that include the space taken up by the cone of the speaker (like would a 1'x1'x1' box work?) or do i need to increase the size of the enclosure by the displacement of the sub?
thanks,
andrew
i'll be running my entire system with an audiobahn 6x75w rms amp, and would like (most likely) a single 10" sub. any suggestions on what sub i should get? Ill bridge two of the outputs, should i be looking at single or duel voice coils? i want good clarity, not too loud but enough to feel it on the highway with the windows down. also, i'm gonna attempt to build a custom fiberglass enclosure, when its recommended that a sub have 1.0 cubic ft in a sealed box, does that include the space taken up by the cone of the speaker (like would a 1'x1'x1' box work?) or do i need to increase the size of the enclosure by the displacement of the sub?
thanks,
andrew
If the Audiobahn follows convention, 2x75W bridged to 1 channel should give you ~250-300W into 4 ohms. Some amps are stable into 2 ohms when bridged but you need to be sure.
Let's say the amp makes the above power into 4 ohms, get a 4 ohm subwoofer. I do not see the need for a DVC design if you are starting from scratch. Dual voice coils are most often used in series or in parallel with each other for a single net impedance. Just get the impedance you need (such as 4 ohms) if that is what the amplifier is rated for.
You do not need to accomodate for the subwoofer displacement when you build your box although I am sure I will be flamed for that comment. Together they might amass 150 cubic inches. In other words, not much. I would also look around at 10's. Some of them can go into as little as 1/2 cubic feet!
soobooroo
#3
Ho do you figure that bridging two 75 watt channels will give you 250? When they are bridged they will give you 150 watts at 4 ohms and around 250-300 into 2 ohms. Also for the sub I would go with a Polk Momo, because from what people say they are awesome and go for only $200 on ebay with their own box. Just my 2 cents.
#4
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For subs, stick to JL Audio. They sound great. To be honest, I haven't heard the Polks, but I have heard lots of other brands, and JL was WAY better. a 10" JLw3 handles better than a lot 12" that cost more. Of course, I say go with a 12" JL if you want to hear it on the highway with windows down.
#6
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Originally posted by Gleb83
Ho do you figure that bridging two 75 watt channels will give you 250? When they are bridged they will give you 150 watts at 4 ohms and around 250-300 into 2 ohms. Also for the sub I would go with a Polk Momo, because from what people say they are awesome and go for only $200 on ebay with their own box. Just my 2 cents.
Ho do you figure that bridging two 75 watt channels will give you 250? When they are bridged they will give you 150 watts at 4 ohms and around 250-300 into 2 ohms. Also for the sub I would go with a Polk Momo, because from what people say they are awesome and go for only $200 on ebay with their own box. Just my 2 cents.
Mono or bridged output for most amplifiers will generally return ~2x the wattage of a both channels into 4 ohms unless the power supply is regulated and won't allow it to do that. So 2x75W into 4 ohms = 1x300W into 4 ohm mono/bridged. You are basically looking at the 2 ohm output of each channel added together when you bridge them.
Check here:
http://www.rockfordfosgate.com/amplifiers/
http://www.bostona.com/ca_products.asp?CategoryID=19
http://www.kenwoodusa.com/product/pr...productId=2425
http://www.zapco.com/nosound/index3.html
Kicker even lists their spec's that way:
http://www.kicker.com/ShowPage.cfm?f...ml&menu=KXAMPS
JL amps are regulated so they do not increase power the way the above amplifiers do. The bridged rating of the 2 channels does not change. It is 2x75W or 1x150W into 4 ohm mono.
http://www.jlaudio.com/amps/3004.html
soobooroo
Last edited by soobooroo; 06-24-2003 at 01:29 PM.
#7
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Originally posted by Meyers
yea, i'm pretty sure bridged will give me 150w at 4 ohms, if i get a DVC sub and wire the 2 coils in parallel, will i be seeing 2 ohms?
yea, i'm pretty sure bridged will give me 150w at 4 ohms, if i get a DVC sub and wire the 2 coils in parallel, will i be seeing 2 ohms?
If your amp is the Audiobahn A6601x, it is over 200W into 4 ohm, bridged. Most likely the reason it does not put out more is that it is power supply limited. That is not uncommon in larger multi-channel amps and not necessarily a problem.
To your second question, what is the impedance of the coils to begin with? Are they both 4 ohms? If so, the impedance would be 2 ohms. If they are both 6 ohms it would be 3 if they are wired in parallel and so on.
soobooroo
#10
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Originally posted by Meyers
thanks for the information soobooroo, i got one more for you, or anyone else for that matter. how does the sound quality compare between a SVC and a DVC?
thanks for the information soobooroo, i got one more for you, or anyone else for that matter. how does the sound quality compare between a SVC and a DVC?
Assuming they were both manufactured by competent companies, there should be no difference between the two types. Of course you will find adherents to each philosophy but it probably has more to do with the installation rather than the coil configuration.
soobooroo
#13
I agree with needhelp that Jl's r probably the best but i have Polk GNX's and love them. Ofcourse i have two 12's and you want 1 10in so i dono how much you would lose. If you have money get JL's or the Momo Polks. If not get cheaper Polk's. O also i paid $210 for 2 12's in a box, new, with a warnty.
#14
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ive had jls and i now have polk/momo. i would go for the jl's, they consume more power than they are rated for, and sound vey good at their minumum power req. they are the best bang for the buck out there as far as i can tell.
#15
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Check out the new JL W7's...
http://www.jlaudio.com/subwoofers/w7preview.html
Amazing... I want one... no, I want two!
http://www.jlaudio.com/subwoofers/w7preview.html
Amazing... I want one... no, I want two!