4 Ohms Sub sounds better for SQ ? - Car Audio | DiyMobileAudio.com | Car Stereo Forum

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Old 1 Week Ago   #1
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Default 4 Ohms Sub sounds better for SQ ?

Is it just me or what the title says is really true.
I always had a nice SQ sub (Hertz Mille 15 and Focal KX46 now 40) and Audison VRX 1.500 or Voce 5.1 or Mosconi 100.2 bridged) and I tend to believe that when I had lower impedance the sound was harsher and muddied????

I could be wrong i'm just trying to figure out if this is true or not?
What do you guys think ?

I personally like the sharp tight clean punchy bass for my music (trance and dance) as opposed to the mushy muddy and distortion sounding low bass (hip hop and rap)
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Old 1 Week Ago   #2
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Default Re: 4 Ohms Sub sounds better for SQ ?

It's all in your head. A good amp will still be under 1% TDH even under 1ohm.
When you had the 2 channel bridged each channel was at 2ohm.
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Default Re: 4 Ohms Sub sounds better for SQ ?

I hope so, because from what I remember when I was testing for this year's ago I DID hear a difference i'm just not sure anymore
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Default Re: 4 Ohms Sub sounds better for SQ ?

You thought you heard a difference, or the difference was because of something else.

Also, hip hop and rap sound much better with good bass, muddy, distorted bass is from a bunch of kids with terrible systems. Get your substage right and listen to Dr. Dre's 2001 and you'll see how good rap can sound.

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Default Re: 4 Ohms Sub sounds better for SQ ?

Quote:
Originally Posted by gijoe View Post
You thought you heard a difference, or the difference was because of something else.

Also, hip hop and rap sound much better with good bass, muddy, distorted bass is from a bunch of kids with terrible systems. Get your substage right and listen to Dr. Dre's 2001 and you'll see how good rap can sound.
IMO, The best produced rap album ever. Very clean.

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Default Re: 4 Ohms Sub sounds better for SQ ?

Doesn't your damping factor reduce every time you drop the impedance? Also running a amp at a easier load helps with other issues like heat, current etc... unless your trying to hit numbers a decent amp that does 500+ at 4ohms bridged is 9/10 times plenty - if you need more power rather buy a bigger amp?

Sometimes having 2 amps drive 2 subs works out better - as some amps don't double the power from 4ohms bridged to 2ohms bridged so you get more power to each driver with 2 amps and you keep your load easier

Dunno... that's my take - also depends on what you want out of your system as well I suppose


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Default Re: 4 Ohms Sub sounds better for SQ ?

I won't run any amp below 2 ohms even if it's stable to 1 ohm. No good reason other than a mental one. Power is cheap these days and you don't have to buy expensive amps to get great sound especially when that amp is for a subwoofer. Buy an oversized amp and run it at 4 ohms and be happy. 4 out of the 5 subs in my collection are either d2 or single 4 so 4 ohms is all my 1 ohm stable amp will ever see. Just how it worked out.

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Default Re: 4 Ohms Sub sounds better for SQ ?

Don't bother much on a driver's impedance load. Sometimes I do believe that running higher than 4ohm at 8ohm sound more superior than running at 1, 2 or 4ohm. But again, it is just a busted myth.
Running higher ohm load will reduce the amp's output while running lower ohm load will make more heat on the amp.
The more important point is, running your amp at higher efficiency will be better.

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Default Re: 4 Ohms Sub sounds better for SQ ?

Quote:
Originally Posted by fish View Post
IMO, The best produced rap album ever. Very clean.


In the same vein, Snoop's Doggystyle is up there too


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Default Re: 4 Ohms Sub sounds better for SQ ?

I prefer 4 ohms when possible, but that's not always the case. I'm about to run my sub(s) @ 1 ohm for the first time, & I'm a little concerned about the amp (MMATS HiFi6150d) overheating. Time will tell...

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Default Re: 4 Ohms Sub sounds better for SQ ?

Throw a fan on it
I ran cheater amps at 1ohm bridged back in the day. A couple of 100cfm fans kept things reliable. I still have those amps and they still sound great (SS Class A 6.0s)


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Default Re: 4 Ohms Sub sounds better for SQ ?

Quote:
Originally Posted by Elektra View Post
Doesn't your damping factor reduce every time you drop the impedance?
Yep, and that's the biggest issue in terms of making your bass sound sloppy. Speakers are piezoelectric. That's a fancy word meaning that not only does electricity make them move, but moving them generates electricity.

A speaker's cone has mass, and therefore it has inertia. When it's moving in a given direction, it tends to keep moving in that direction. This momentum actually generates electricity, and the amp must overcome this electricity (called "back EMF") to start the cone moving in the other direction.

And just as a speaker wired at 2ohms draws more power from an amp that a speaker at 4ohms, a speaker at 2ohms generates more back EMF than a speaker at 4ohms.

Getting the cone to change directions quickly and crisply is an important key in creating tight, punchy bass. And running at a lower ohm load makes it tougher for the amp to do that.
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Default Re: 4 Ohms Sub sounds better for SQ ?

Butler has shown how little the amplifiers damping factor effects it.
His test shown it didn't make any difference until it reached single digits.
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Default Re: 4 Ohms Sub sounds better for SQ ?

I experimented with different sub/amp setups for about 10 years. FWIW, I always enjoyed the higher ohm setups more, they just sounded better.


They also have amps with adjustable damping factor.

You say at 70mph you cant hear a difference? Does this mean at 35 you can?
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Default Re: 4 Ohms Sub sounds better for SQ ?

I am no expert but 500 watts at 2 ohms is not the same as 500 watts at 4 ohms.
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