wtb/wttf Amp for power @ 4 ohms, around 2-3K rms @ 12.8V

[audio_phill 10+ year member]

Title says it all, doesnt have to be new, but not interested in modded or repaired amps, I have 1774 @ 4 atm but looking for class D because this class a/b is just too inefficient for my current electrical. 222 amps atm to make 1774... class d will allow me make around 3K @ 292 amps which would be fine and give me more on tap...

Have stuff to trade, subs amps, comps, coaxials etc for anyone looking to do some swapping, or if we can agree on a price we can do something with cash.

Click to read more...

 

[ciaonzo 5,000+ posts]

Strapping seems the best option for high power at 4ohm. It's what I plan to do anyhow.

 

[jrdnhsnbrg 10+ year member]

Strapping seems the best option for high power at 4ohm. It's what I plan to do anyhow.

I was just thinking that, too... Probably much cheaper to get a pair of amps that do 1200@2 ohms each

 

[audio_phill 10+ year member]

Strapping seems the best option for high power at 4ohm. It's what I plan to do anyhow.

I was just thinking that, too... Probably much cheaper to get a pair of amps that do 1200@2 ohms each

Strapping still puts a lower load per amp and is slightly better than running at 1, but still not the control im after.

The opti6K might suffice, but not convinced its gonna do 2K @ 4rms on 12.8V. Cant find a clamp at 4 to save me lol.

 

[ciaonzo 5,000+ posts]

Strapping still puts a lower load per amp and is slightly better than running at 1, but still not the control im after.
The opti6K might suffice, but not convinced its gonna do 2K @ 4rms on 12.8V. Cant find a clamp at 4 to save me lol.

You need to strap a pair of these... once you've financed them.
Minotaur II ZED Audio Amp Monoblock Audiophile Speakers 750W RMS Amplifier New | eBay

 

[SounDrive Pro Seller]

Power at low ohms is not a problem, I have plenty of stuff laying around that makes power at 1. I dont like wiring subs in parallel, I like full motor force to keep as much cone control as I can get being an sq/sql guy. Why have abl of 15 when you can have a bl of 23 lol.
The opti 6K wouldnt make 4K @ 4 on 12.8V, but would probably make enough power. I really only need 2K, but dynamic headroom is always a plus. I'd rather feed a 2K sub 3K clean than 2500 clipped anyday.

Working on an 18" Exo setup, and with its sql potential, I really want to maximize its potential.

If you can hear the difference between 1 ohm and 4 ohms on subs in a blind test, I'll give you a dollar.

A good amp that's 1 ohm stable will be around the same efficiency and cheaper than a huge, cheap amp that will do the same power at 4 ohms..

 

[stylez12321 10+ year member]

He needs the jbl bpx 2200

 

[audio_phill 10+ year member]

If you can hear the difference between 1 ohm and 4 ohms on subs in a blind test, I'll give you a dollar.
A good amp that's 1 ohm stable will be around the same efficiency and cheaper than a huge, cheap amp that will do the same power at 4 ohms..

Bring on the dollar lol. 20 years at this has trained my ears well, I can hear changes that most can't for sure. I can also hear well below 20Hz which is apparently odd? Also, efficiency is inherent to topology, not typically to price point only. 4 ohm power will always be more efficient than 1 ohm power. It will almost always have significantly less thd and more damping as well. If 1 ohm power would make me happy, I would simply just swap my amps around.

He needs the jbl bpx 2200

looking into this one

 

[audio_phill 10+ year member]

He needs the jbl bpx 2200

1% thd and 67dB s/n puts that amp way outta the sq spectrum lol. and at 190 amps of fusing, I'd have to see a clamp test to believe it can do near that power lol.

 

[Jeffdachef 5,000+ posts]

you can try a ct sounds 7000.1d, its 1750 at 12.8v but they've been known to underrate their amps by a lot.

 

[audio_phill 10+ year member]

you can try a ct sounds 7000.1d, its 1750 at 12.8v but they've been known to underrate their amps by a lot.

underrate but over price lol //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif and they dont list what load gives the 150 damping factor //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[CerwinVega_Fan 10+ year member]

did u check out the us amps usa-2000x?

It does 2000@4ohm iirc and they are underrated.

I have a usa-2000 sitting here collecting dust

 

[ciaonzo 5,000+ posts]

200 Sony watts sounds like everyone else's 2000 watts. Can't imagine what 1000 Sony watts sounds like.

 

[SounDrive Pro Seller]

Bring on the dollar lol. 20 years at this has trained my ears well, I can hear changes that most can't for sure. I can also hear well below 20Hz which is apparently odd? Also, efficiency is inherent to topology, not typically to price point only. 4 ohm power will always be more efficient than 1 ohm power. It will almost always have significantly less thd and more damping as well. If 1 ohm power would make me happy, I would simply just swap my amps around.


looking into this one

Feel below 20hz? Sure. Hear well below 20hz? Not unless you have the ears of an elephant.

 

[ciaonzo 5,000+ posts]

Feel below 20hz? Sure. Hear well below 20hz? Not unless you have the ears of an elephant.

I can discern the difference between 15Hz and 16Hz over and over again. It's all about pitch definition and you just need equipment that can reproduce it without any distortion whatsoever. This is exactly why a person would use LMS or XBL^2 topology in a sealed or EBB alignment. But yeah, it's mostly visceral at that point.

 

[audio_phill 10+ year member]

Feel below 20hz? Sure. Hear well below 20hz? Not unless you have the ears of an elephant.

I can discern the difference between 15Hz and 16Hz over and over again. It's all about pitch definition and you just need equipment that can reproduce it without any distortion whatsoever. This is exactly why a person would use LMS or XBL^2 topology in a sealed or EBB alignment. But yeah, it's mostly visceral at that point.

Without any tactility I can audibly hear down to around 16Hz, I imagine with enough tactility the vicseral experience would definitely take over from there. Given if theres sunstantial ambient noise it is more difficult for me to pick out "subharmonic" frequencies, but I can hear them, without the need for tactility or transduction, not saying I hear them as loud as higher frequencies but thats how rolloff works lol. And, depending on who you believe as to what human hearing range is, LSU as decided it is 64-23,000, I personally cant really hear anything above 14kHz well enough to say I can hear above, but LSU says I can lol. At one point, there was a writeup saying that elephants could communicate with subharmonic frequencies passed through the ground by stomps, which would be similar to an earthquake which is recorded to have single digit frequencies, So... Its at this point still a toss up and the range is narrowed to an average, not to a single persons actual range. My grandmother could pick up on ULF too, might be a genetic trait from lines long gone, who knows. I took a hearing test several times throughout life, and even then I could pick up on frequencies the folks said I wasnt supposed to be able to. Yet everytime they played a tone supposedly out of my reach I could pick it up, again not at the same perceived volume as 30Hz for example, but I can hear it. I enjoy ULF frequencies more than frequencies over 30Hz, not sure why, but I do.