 | |    | |  | | Voltage vs. Current - Which is louder? | | CCA Hoser
Join Date: Mar 2007 Location: Mississauga, Ontario Posts: 213
| Assuming 2 indentical model subs from the same manufacturer, just different impedances.
A 4ohm sub getting 60volts from an amp...
60v*60v/4ohms=900watts (15amps)
OR
A 1ohm sub getting 30volts from an amp...
30v*30v/1ohm=900W (30amps)
The current and voltage change in each example, but the wattage remains the same (Volts x Amps = Watts)...
So the question remains... What makes a speaker louder?
More current? or more voltage?
__________________
Daily driver is what I do...
1997 Ford Escort LX
220A HO Alt + OD Pulley (To Be Reinstalled)
Jensen VM8012 In-Dash DVD Receiver w/ DVD-RW/SD Memory Card/USB Support (Xvid/AC3 Capable)
Phoenix Gold SLD44 Line Driver
Phoenix Gold TBassCUBE w/ Subsonic Filter
MTX Thunder 92001 Amp (2000W RMS)
2 x Alpine Type-R SWR-1222D Subs
Subzone dual 1.5 cu. ft. Net. Int. Vol. Vented Box @ 38Hz
JBL GTO75.4II 4-Channel Amp
Fosgate Power Series 6x9 Coaxials
Kicker KS60 Coaxials
To be installed...
18 Farad Tsunami Digital Capacitor V10HCAP-18 | 
|  | |   | | | | | Supporting Member
Join Date: Apr 2006 Location: Edmonton, Alberta Posts: 957
| Seriously?
__________________  | 
| | | | | | | | CCA McKenzie
Join Date: Jan 2005 Location: Richmond Hill, Ontario Posts: 984
| go back to school
__________________ 
Team Fear Of Bass
2006 & 2007 Canadian Street B record holder
2nd place @ regional and national finals | |
| | | | | | | | CCA Back Bacon
Join Date: Aug 2007 Location: New Brunswick Bathurst Posts: 38
| a watt is a watt. the more current the bigger the wire has to be. that's why the electric companies have in the thousands of volts. so that the wire can stay small. If you try and feed a city at 120v, the wire would be a foot thick(my estimate only). the more current and voltage you have the more power your gonna get. I heard that the alma gates bronco modified their amps so it would run on a 16-18v charging system. more voltage more power. | |
| | | | | | | | CCA Golden Toque
Join Date: Feb 2001 Posts: 1,114
| all else equal it doesn't matter either way however a 4ohm sub and a 1ohm sub will not be identicle, and neither will actually operate at the imedance listed there is impedance rise and a variety of other factors that would totally make this comparison not work but in the simplistic example both would be the same. | |
| | | | | | | | CCA McKenzie
Join Date: Jun 2006 Location: Ontario, Courtice Posts: 820
| Not this again. This horse has been beaten, gutted and is currently rotting, yet you are still trying to bring it back to life.
__________________
Alpine 9856 Deck .
Clarion EQ.
Fusion 6.5" Door Components.
Fusion PowerPlant 4 Channel.
Blaupunkt 6x9's.
Powerbass 2400D running at 0.5 ohms.
4 MAW-15s in an 8.5cu/ft box @ 32hz wired to half ohm.
2 Fusion 1 Farad Capacitors.
4 runs 4AWG powers and grounds. | |
| | | | | | | | CCA Back Bacon
Join Date: Aug 2007 Location: BC Vancouver Posts: 13
| Look at it this way...
A speaker voice coil can be thought of as an electromagnetic motor (similar to a reversed solenoid). The magnetic field that is generated is proportional to the number of ampere-turns through the voice coils. The magnetic field is what propels the voice coil (and the cone) in opposition to the static magnet's magnetic field.
For example, consider that each voice coil has N turns. The series wired dual voice coils would have 2N turns with 15 amps through it (2N turns * 15 A = 30N ampere-turns). The parallel voice coils would each share half the current provided by the amplifier (2 * N turns * 30 A /2 = 30N ampere-turns).
The result is that either wiring generates the exact same ampere turns in the speakers “motor” therefore creating the same excursion and the same SPL. The voltage is not a factor in the equations.
IMHO, if I had a choice of the two amps I may be inclined to go with a four ohm wiring as it may be a more stable system overall.... | |
| | | | | | | Yankee 
Join Date: Oct 2003 Posts: 2,354
| Ya know I have never heard a volt or an ampere, I just dont know which is louder or sounds better or is less filling | |
| | | | | | | | CCA Hoser
Join Date: Mar 2007 Location: Mississauga, Ontario Posts: 213
|  Quote: |
Originally Posted by kstich  For example, consider that each voice coil has N turns. The series wired dual voice coils would have 2N turns with 15 amps through it (2N turns * 15 A = 30N ampere-turns). The parallel voice coils would each share half the current provided by the amplifier (2 * N turns * 30 A /2 = 30N ampere-turns). | Lets assume that the subs are single voice coil subs only.
How is one sub made with a lower impedance than the other?
Does that mean that the sub with less impedance (1ohm) has 1/4 the amount of wire or turns?
__________________
Daily driver is what I do...
1997 Ford Escort LX
220A HO Alt + OD Pulley (To Be Reinstalled)
Jensen VM8012 In-Dash DVD Receiver w/ DVD-RW/SD Memory Card/USB Support (Xvid/AC3 Capable)
Phoenix Gold SLD44 Line Driver
Phoenix Gold TBassCUBE w/ Subsonic Filter
MTX Thunder 92001 Amp (2000W RMS)
2 x Alpine Type-R SWR-1222D Subs
Subzone dual 1.5 cu. ft. Net. Int. Vol. Vented Box @ 38Hz
JBL GTO75.4II 4-Channel Amp
Fosgate Power Series 6x9 Coaxials
Kicker KS60 Coaxials
To be installed...
18 Farad Tsunami Digital Capacitor V10HCAP-18 | |
| | | | | | | | CCA McKenzie
Join Date: Jun 2006 Location: Ontario, Courtice Posts: 820
| Correct Answer: Who cares.
__________________
Alpine 9856 Deck .
Clarion EQ.
Fusion 6.5" Door Components.
Fusion PowerPlant 4 Channel.
Blaupunkt 6x9's.
Powerbass 2400D running at 0.5 ohms.
4 MAW-15s in an 8.5cu/ft box @ 32hz wired to half ohm.
2 Fusion 1 Farad Capacitors.
4 runs 4AWG powers and grounds. | |
| | | | | |
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | | | Thread Tools | | | | Display Modes |  Linear Mode |
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off | | |
|  |
 » Recent Threads | | | | | | | | | | | |
