| Author |
Thread: .5ohm stable |
    
Gold Member Username: Snarl2004
Audioque 12 SD2.5s,
Earthquake P...
Post Number: 1150
Registered: Dec-06
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| Posted on Tuesday, May 01, 2007 - 08:48 pm: |
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does anyone no of any amps that go down to .5 easily with the correct electrical upgrades in ur car...? |
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Silver Member Username: Skies
Courtenay,
British Colu...
Canada
Post Number: 642
Registered: Aug-05
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| Posted on Tuesday, May 01, 2007 - 08:51 pm: |
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Sundown SAZ-1500D
Sundown SAE-1000D
Not sure if its 100% stable, but Orion 2500D
IA 20.1 |
Silver Member Username: Oneracistguy
TWO EGG,
FL
USA
Post Number: 653
Registered: Sep-06
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| Posted on Tuesday, May 01, 2007 - 09:34 pm: |
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2500d is .5 ohm stable man but u need an electrical system to back it up |
Gold Member Username: N2audio
Lawrence,
Ks
USA
Post Number: 1276
Registered: Mar-04
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| Posted on Tuesday, May 01, 2007 - 09:42 pm: |
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Lanzar Opti 2000d
~1900 rms @ 1/2
Those amps are actually designed for it. |
Gold Member Username: Van_man
Boston South,
MA
Post Number: 2349
Registered: Mar-06
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| Posted on Tuesday, May 01, 2007 - 09:48 pm: |
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US Amps
Stable down to 1/4 ohm.
http://cgi.ebay.com/RARE-U-S-AMPS-US-AMPS-VLX-400-FLORIDA-SPLASH-AMP_W0QQitemZ20 0103707944QQihZ010QQcategoryZ39732QQrdZ1QQcmdZViewItem |
Silver Member Username: Freezeman_7
Lindsay,
Oklahoma
U.S.A
Post Number: 978
Registered: May-06
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| Posted on Tuesday, May 01, 2007 - 10:10 pm: |
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i was gonna say us amps.. they are have fine build quality too |
Silver Member Username: 04redmach1
Columbus,
GA
USA
Post Number: 625
Registered: Mar-06
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| Posted on Tuesday, May 01, 2007 - 11:44 pm: |
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Sundown SAZ is stable, RD amps are stable, Orion is stable, and few others. All depends on your budget and what you want.
Kevin |
Silver Member Username: Sinful_systems70
15 INCH WANG...
Post Number: 842
Registered: Nov-06
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| Posted on Tuesday, May 01, 2007 - 11:53 pm: |
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ED NINe.1 |
Silver Member Username: Skies
Courtenay,
British Colu...
Canada
Post Number: 649
Registered: Aug-05
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| Posted on Wednesday, May 02, 2007 - 12:34 am: |
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Wow, the Nine.1 is stable at .5?
Any threads on this? |
Gold Member Username: Oleg
Santa Monica,
CA
USA
Post Number: 1221
Registered: Nov-04
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| Posted on Wednesday, May 02, 2007 - 12:57 am: |
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Don't forget MMATS D2100.05 and D3500.05 |
Silver Member Username: Freezeman_7
Lindsay,
Oklahoma
U.S.A
Post Number: 996
Registered: May-06
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| Posted on Wednesday, May 02, 2007 - 08:29 pm: |
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yeah thats new for me about the nine.1 i didnt know it would do that??? |
Gold Member Username: Juliob
Santo Domingo
Dominican Re...
Post Number: 4559
Registered: Dec-05
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| Posted on Wednesday, May 02, 2007 - 08:35 pm: |
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optidrive x2. |
Gold Member Username: Jakeyplaysbass
St. Louis,
MO
Post Number: 1714
Registered: Jul-05
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| Posted on Wednesday, May 02, 2007 - 08:38 pm: |
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Almost all MMats amps have a .5ohm verson. Just get a bigger amp and run it at a higher ohm...its safer and has a cleaner signal. |
Gold Member Username: N2audio
Lawrence,
Ks
USA
Post Number: 1279
Registered: Mar-04
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| Posted on Wednesday, May 02, 2007 - 10:41 pm: |
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"...at a higher ohm...its safer and has a cleaner signal."
Disagree.
If an amp is designed to be capable of running a 1/2 ohm load it is no more dangerous than running an amp designed to run at any other minimal impedance.
Cleaner signal?
When a sub amp's rated or tested it's almost always done at "<1% THD". Most quality amps will do rated power at much less than 1%, and I think everything mentioned in this thread qualifies as "quality". |
Gold Member Username: Oleg
Santa Monica,
CA
USA
Post Number: 1241
Registered: Nov-04
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| Posted on Wednesday, May 02, 2007 - 10:50 pm: |
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Opti is right. Here's some more clarification though on what running an amp at a higher impedance DOES do. More often that not, the damping factor goes up as impedance goes up giving amp great control over the driver making it "punchier" and less distorted. |
Gold Member Username: Nd4spd18
Southeast PA
Post Number: 2114
Registered: Jul-06
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| Posted on Wednesday, May 02, 2007 - 11:19 pm: |
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On most amplifiers, efficiency also increases at higher impedances. |
Silver Member Username: Jkidder
Spring hill,
Florida
Usa
Post Number: 516
Registered: Nov-05
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| Posted on Wednesday, May 02, 2007 - 11:57 pm: |
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good info^^ we need more threads like this. quality info |
Silver Member Username: 04redmach1
Columbus,
GA
USA
Post Number: 633
Registered: Mar-06
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| Posted on Thursday, May 03, 2007 - 01:25 pm: |
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Yepers, I was going to say efficiency is decreased when going to .5 ohm if only rated 1 ohm. Either way, as long as you can't cook eggs on the amp, you are good 
Kevin |
Gold Member Username: Th3pwn3r
Post Number:...
Post Number: 2381
Registered: Jul-06
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| Posted on Thursday, May 03, 2007 - 03:12 pm: |
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"Don't forget MMATS D2100.05 and D3500.05"
Those amps are too nice for you!!!Stay away from them Oleg! |
Silver Member Username: Joebruce
15 Inch Wang...
Post Number: 763
Registered: May-04
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| Posted on Thursday, May 03, 2007 - 03:52 pm: |
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Orion G4s FTW!! |
Gold Member Username: Carguy
Post Number: 6197
Registered: Nov-04
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| Posted on Thursday, May 03, 2007 - 04:29 pm: |
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"...at a higher ohm...its safer and has a cleaner signal."
Opti, I think he meant that the lower number ohms exert higher load on the amplifier, meaning it has to work harder. This usually means it will run hotter, distort more, be less efficient etc. |
Gold Member Username: Oleg
Santa Monica,
CA
USA
Post Number: 1251
Registered: Nov-04
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| Posted on Thursday, May 03, 2007 - 05:17 pm: |
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Yeah, Rob, those amps are too nice for me right now. I won't be getting any of the high end stuff in my car until I get my teaching gig together. In this car, I'm only going to swap some woofers and maybe some boxes. |
Gold Member Username: Jakeyplaysbass
St. Louis,
MO
Post Number: 1715
Registered: Jul-05
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| Posted on Thursday, May 03, 2007 - 06:49 pm: |
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opti your right. i was saying what isaac said, running a sub at .5ohm when it should be at 1ohm or higher only leads to problems. with the way they are making amps today noone should really need to run at .5ohm for everyday driving. they have amps that put out just as much power at 1 2 or even 4ohm. |
Gold Member Username: N2audio
Lawrence,
Ks
USA
Post Number: 1281
Registered: Mar-04
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| Posted on Thursday, May 03, 2007 - 08:13 pm: |
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"running a sub at .5ohm when it should be at 1ohm or higher only leads to problems."
I see. I definitely agree with that.
But running an amp at min rated impedance, whether it be 4 ohms or 1/2 ohm shouldn't have any negative (at least not audible) effects on the performance of the amp.
DF decreases? Sure, but the issue is - does it make an "audible" difference?
At several hundred watts or more -- I seriously doubt it.} |
Silver Member Username: Skibum12189
Cleveland
Post Number: 536
Registered: Mar-06
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| Posted on Thursday, May 03, 2007 - 08:56 pm: |
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go back up to that us amps and look at it, its crazy ahah its like 5 feet lnog, or it looks like it |
Gold Member Username: Oleg
Santa Monica,
CA
USA
Post Number: 1257
Registered: Nov-04
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| Posted on Thursday, May 03, 2007 - 09:00 pm: |
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It's about 3ft long, pretty huge. |
Bronze Member Username: Mesodumm
Dewey,
Az
Usa
Post Number: 34
Registered: Apr-07
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| Posted on Saturday, May 05, 2007 - 09:28 am: |
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Orion HCCA might put them on EBAY if anyone interested. 225hcca, 425hcca & 250hcca |
