What should I do?

[jrpro130 10+ year member]

Okay, I have a hifonics bx1605D hooked up at nominal 1 ohms (I have dual 4 ohm subs wired to 2 ohms each, wired to 1 ohm nominal) and it's not doing the job. I don't get a lot of excursion at all and I really need MORE POWER!!! //content.invisioncic.com/y282845/emoticons/yumyum.gif.0556df42231b304b9c995aefd13928a8.gif

With box rise, I'm reading 5 ohms on the DMM, which I am guessing is wrong, but you never know. My DMM hasn't been treated nicely. So, I'm guessing about 1.7-2oms after rise

I was thinking about a PA A3000DB, but it doesn't seem like it would be enough, I mean, if it came down to it, could I strap them, and how easy would it be? If each does 1800 @ 2 oms, that means I will have 3600 @ 2 ohms. This is a competition setup and I will be very easy on the gains for DD.

I just don't get why I'm not getting that much excursion off the amp, I thought "1600" watts would be a lot better than it is...here's the vid if anyones interested to see the excursion... Click Here

So am I crazy wanting to strap 2 A3000DB's??? I mean, that should get me some excursion...and If your asking about electricals, I have a 200 amp alt in the process, 2 batteries, and a crap load of 2/0 wiring. I already have the big 3 in 2/0 also.

Would on A3000DB be enough, I get 14.16 volts at idle and I figure I need at least 2kw, but this box rise is worrying me. Could it really read that high off NOMINAL 1 ohm??? Or is there something I did wrong? I just used the bananna clips...LMK

Click to read more...

 

[Little B 10+ year member]

How do you have them wired? If it's reading 5ohms it sounds to me like you wired them to a 4ohm load. Sounds like you have the speakers themselves wired in series which gives each a 8ohm load, and then the two subs wired as parallel going to the amp which would be a final load of 4-ohms. If I recall correctly.

 

[Blunt 10+ year member]

How do you have them wired? If it's reading 5ohms it sounds to me like you wired them to a 4ohm load. Sounds like you have the speakers themselves wired in series which gives each a 8ohm load, and then the two subs wired as parallel going to the amp which would be a final load of 4-ohms. If I recall correctly.

did you not read what he said? BOX RISE not wired at 5 0hms thats what he gets when he turns it on and is playing.

Now back to the original question. the 1605 isn't 1600w its actually less then that. one 3000 outta do it i highly doubt you need 2

 

[jrpro130 10+ year member]

How do you have them wired? If it's reading 5ohms it sounds to me like you wired them to a 4ohm load. Sounds like you have the speakers themselves wired in series which gives each a 8ohm load, and then the two subs wired as parallel going to the amp which would be a final load of 4-ohms. If I recall correctly.

I have a positive and negative wired to each sub

it goes like this on the sub + - + -

I have one pos and one neg hooked up

I did it right*****

then i have the bananna clips going from one positive to the other, one negative to the other. I wired it like this all the other times i've had type r's and never had a problem.

That should be nominal 2 ohms, then I take the two pairs of wire from the subs and connect them into one pair of wires making it a 1 ohm load nominally

don't get me wrong, it slams, but theres NO excursion compared to what even 1000 watts should be like.

 

[jrpro130 10+ year member]

did you not read what he said? BOX RISE not wired at 5 0hms thats what he gets when he turns it on and is playing.
Now back to the original question. the 1605 isn't 1600w its actually less then that. one 3000 outta do it i highly doubt you need 2

If I was guessing, it would be about 1kw...but it doesn't seem like it, something seems strange. It's just not moving those subs, and i've had 2 12" type r's before (ported) and they moved a HELL of a lot more than these on the exact same amp

 

[Team Maxxsonics 10+ year member]

I have a positive and negative wired to each sub
it goes like this on the sub + - + -

I have one pos and one neg hooked up

I did it right*****

then i have the bananna clips going from one positive to the other, one negative to the other. I wired it like this all the other times i've had type r's and never had a problem.

That should be nominal 2 ohms, then I take the two pairs of wire from the subs and connect them into one pair of wires making it a 1 ohm load nominally

don't get me wrong, it slams, but theres NO excursion compared to what even 1000 watts should be like.

I'm not sure how you wired it.

Did you connect it this way?

Sub #1

Both + coil terminals connected together then to the amp + speaker terminal and then both - coil terminals connected together and then to the amp - speaker terminals.

Sub # 2

Wired same as sub #1

 

[jrpro130 10+ year member]

I'm not sure how you wired it.Did you connect it this way?

Sub #1

Both + coil terminals connected together then to the amp + speaker terminal and then both - coil terminals connected together and then to the amp - speaker terminals.

Sub # 2

Wired same as sub #1

Yep, and i'm reading between 4.8-5.0

does it matter if my amp is on??? I do it with the amp off...that may have something to do with it //content.invisioncic.com/y282845/emoticons/blush.gif.99bc659ee2012b7d826165e26fb5eebe.gif

 

[fosgate140 10+ year member]

the hifonics if electrical holds up should give you around 1200 rms.

 

[jrpro130 10+ year member]

the hifonics if electrical holds up should give you around 1200 rms.

I played around with the amp last night, I reversed RCA's and checked all my connections. Not much of a diff...maybe I'm going deaf???

No one answered my ? though...when you are reading OHMS with a DMM does the amp have to be on?

 

[dkguitarist 5,000+ posts]

ohms=speaker impedence. voltage=amplifier output.

speakers need to be unhooked to measure impedence.

unhook the speakers to measure voltage on amps terminals and yes the amp has to be on to do this one. not to measure the speakers.

 

[squeak9798 5,000+ posts]

No one answered my ? though...when you are reading OHMS with a DMM does the amp have to be on?

The subwoofer shouldn't even be connected to the amplifier when measuring the resistance.

 

[jrpro130 10+ year member]

The subwoofer shouldn't even be connected to the amplifier when measuring the resistance.

oops...

 

[Leeiswho2b 10+ year member]

lol......that would absolutely make a difference!!!!!!!