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Difference in sound??

 

New member
Username: Rhassler

Post Number: 4
Registered: Dec-04
for a sub with dual 2-0hm coils or dual 4-ohm coils if they were wired to have about the same rms watts from an amp.... would they sound the same??
 

sublime420
Unregistered guest
well your question doesnt make the most sense. but dual 2-ohm coils can be wired to 1-ohm or 4-ohms. Dual 4-ohm coils can be wired to 2-ohms or 8-ohms. so on the exact same amp, a sub with dual 2-0hm coils will not be the same as dual 4 ohm coils.
 

Silver Member
Username: Hdubb

Farmington, Nm Usa

Post Number: 189
Registered: Nov-04
i think(im not positive) but the 4 ohm would sound clearer and with less distortion. i think
 

New member
Username: Rhassler

Post Number: 5
Registered: Dec-04
ok thanks, im kinda new to all this.. but my subs say 750 watts rms, 1500 watts peak... if i powered them at 900 watts rms.. would it damage the sub?
 

sublime420
Unregistered guest
it really depends on what amp ur talkin bout and if its stable at 1-ohm or 2-ohms.
 

New member
Username: Rhassler

Post Number: 6
Registered: Dec-04
Alphasonik PMA1000HCA

Number of Channels 2
RMS Power (4 ohms) 500 watts x 2 chan.
RMS Power (2 ohms) 900 watts x 2 chan.
RMS Power (1 ohm) 1500 watts x 2 chan.
Bridged RMS Power 3000 watts x 1 chan.
Peak Power Output 6000 watts approx.
Min. Impedance Unbridged 1 ohm
Min. Impedance Bridged 1 ohm
THD @ Rated RMS Power 0.05%

thats the specs on it
 

sublime420
Unregistered guest
problly. What sub u talkin bout?
 

New member
Username: Rhassler

Post Number: 7
Registered: Dec-04
well i ordered all the stuff, but im wondering if i should cancel the order and change some things around. the subs are 2 kicker 12" L7's with 750 rms and 1500 peak
 

New member
Username: Rhassler

Post Number: 8
Registered: Dec-04
dual 2-ohm coils*
 

sublime420
Unregistered guest
if you got the dual 2-ohm coils, then u'll be ok. if u got the dual 4-ohm coils then u'll be givin each sub 900watts rms. i dont know if they can take that.
 

sublime420
Unregistered guest
then just wire the coils on each sub in a series and 1 sub to each channel. that will sound good.
 

New member
Username: Rhassler

Post Number: 9
Registered: Dec-04
alright, thanks a ton!
 

Silver Member
Username: Hdubb

Farmington, Nm Usa

Post Number: 192
Registered: Nov-04
if you run them at 900 you should be okay, but L7s have been known to crap out on people. that is a massive amp. i think you should be okay, if not just be easy on the gain settings, so they dont get completely 900 watts. i wouldnt cancel though. you should be set
 

sublime420
Unregistered guest
r u installing it urself?
 

New member
Username: Rhassler

Post Number: 10
Registered: Dec-04
no, but im thinkin if i get 15" l7's dual 2-ohm coils, it would work out better. the specs on those are


Sensitivity: 88.5 dB
RMS Power Range : 75-1000 Watts
Peak Power Handling: 2000 Watts
Impedance: 2 Ohm
Low Frequency response: 18 Hz
High Frequency Response: 100 Hz
Diameter: 15 Inch

Features
aluminum deposit cone
non-resonant aluminum basket
Santoprene rubber surround
dual 4-ohm voice coils for wiring flexibility
frequency response 18-100 Hz
power range 75-1,000 watts RMS (300 watts per coil)
peak power handling 2,000 watts
sensitivity 88.5 dB
top-mount depth 8-1/4"
sealed box volume 1.5-6.0 cubic feet
ported box volume 3.0-6.0 cubic feet
Warranty - Onlinecarstereo.com 1 Year warranty

....the thing i dont get is "dual 4-ohm voice coils for wiring flexibility"..... the site says its dual 2-ohm, but in the description it says dual 4-ohm, but it says that same phrase for both the dual 2-ohm and the dual 4-ohm models.
 

sublime420
Unregistered guest
if u get the 15s, then u want to get the dual 4 ohm coils. cuz then you could wire them in parallel and hook 1 sub to each channel for 900watt rms a peice.
 

sublime420
Unregistered guest
this may help u out. http://www.crutchfieldadvisor.com/learningcenter/car/subwoofers_wiring.html?view =all
 

Bronze Member
Username: Rhassler

Post Number: 11
Registered: Dec-04
would that sound a lot better than the 12" L7's?
 

sublime420
Unregistered guest
definatly. its just up to how much ur willing to pay.
 

Bronze Member
Username: Rhassler

Post Number: 12
Registered: Dec-04
ok, but what type of box do you think would be the best for the 12 and the 15?
 

sublime420
Unregistered guest
personally, i'd go sealed. if you want it a little louder you could go ported, but it will take up more room.
 

Bronze Member
Username: Rhassler

Post Number: 13
Registered: Dec-04
so if i got the 15" l7's and ran them at 1 ohm, would my amp be able to take it...someone said running them at low ohms can mess things up?
 

sublime420
Unregistered guest
ur amp could take it but the subs might not be able to. at 1 ohm ur amp will put out 1500rms a channel and the 15s are suppose to take 1000rms. but run them at 2 ohms and they will each get 900rms. that should be plenty.
 

Bronze Member
Username: Rhassler

Post Number: 14
Registered: Dec-04
ok, so if i go with the 15" Dual 4-ohm's how would i wire them, the website you sent says they can either be 1 ohm or 4 ohm loads, how would i make it 2 ohm?
 

Silver Member
Username: Koz1031

Monticello, In United states

Post Number: 368
Registered: Jul-04
wire the voice coils in parallel and 1 channel to each sub. 900 watts each that way, then u r safe, and should be getting plenty of power, and should be loud enuff. I'd go a ported box tho.
 

Silver Member
Username: Koz1031

Monticello, In United states

Post Number: 369
Registered: Jul-04
http://www.jlaudio.com/tutorials/wiring/index.html#2dvcsp
this one should help also.
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