How to power a 2 ohm sub?

[Wabbit]

My 30 year old Infinity SSW-10 sub plate amp got fried. I hate plate amps. So I wanted something external to power it and found a couple $200 options that would keep it from the landfill, but they all expect a 4 or 8 ohm loads. This sub has a single 2 ohm speaker. How do you power that?

The cost of replacing the speaker puts it in just better off replacing it realm. It's a cheapy, but it was better working than taking up my garage space.

 

[ryanosaur]

How much power does it need.
Crown XLS 1002 would be the least expensive of their Amps (new) which are stable to 2 ohms, IIRC.

 

[Wabbit]

Lol. nice amp, but this sub was sold as a 100watt unit. You can get a new cheap Kipsch sub for $175 that's probably comparable with another throw away plate amp. Those crown and Beringers then need their input voltage increased to sound good. I have the 6000 DSP.

 

[ryanosaur]

Sounds like it's time for the dreaded upgrade. Just make it a better one than a $175.00 Klipsch.

 

[lovinthehd]

Lol. nice amp, but this sub was sold as a 100watt unit. You can get a new cheap Kipsch sub for $175 that's probably comparable with another throw away plate amp. Those crown and Beringers then need their input voltage increased to sound good. I have the 6000 DSP.

FWIW I'm using one of my Crowns to power 2ohm wired (dual 4 ohm vc) diy sub and the voltage is fine from my avr.

Not sure I'd buy such an amp for that sub, as it's a servo style sub, instead of just taking the opportunity to upgrade....I also have a still functioning SSW-10 myself as well (kinda surprised its still hanging out actually ).

 

[Wabbit]

That's cool. I have 30 years of attachment It was my first sub from the Good Guys.

I attempted to repair mine, but the R1&2 resistors literally welded themselves to the PCB when they fried damaging it. The driver isn't a true servo. They listed it with a DCR value of 1.8 ohms. Oh well.

 

[lovinthehd]

That's cool. I have 30 years of attachment It was my first sub from the Good Guys.

I attempted to repair mine, but the R1&2 resistors literally welded themselves to the PCB when they fried damaging it. The driver isn't a true servo. They listed it with a DCR value of 1.8 ohms. Oh well.

I've always been under the impression that there's still a connection for feedback between amp and driver....are you going to use the Behringer then ?

It's sort of a first good sub for me, too, but in my case a roommate gave it to me as he moved out; I refoamed it and repaired the cone (crack) and its been plugging away since out in the workshop....surprisingly. Not a daily driver but plenty of use still.....

 

[Wabbit]

There's just the -&+ leads to the speaker. I forget how that amp worked. Something about a velocity bridge measuring resistance. It backs off when stressed. But doing so sorta prematurely effects the sound. Something like that. There's a service manual (I'd attached it, but it's too big) that goes into the details.

My 6000 powers powers two B&W subs that had bad plate amps, and a 15" ultimax I built in the back of house in my theater. The SSW-10 sat in a family room playing kid shows. I attached a rolls promatch to the 6000 and it really came to life after that. Been very pleased with that setup, and the bass shakers in the seats are icing on the cake.

 

[lovinthehd]

Thanks, I've downloaded the service manual before, I'll take another look.