Car Audio Forumz - The #1 Car Audio Forum

Car Audio Forumz - The #1 Car Audio Forum (https://www.caraudioforumz.com/)
-   General Discussion (https://www.caraudioforumz.com/general-discussion-10/)
-   -   Anyone know old Rockford? (https://www.caraudioforumz.com/general-discussion-10/anyone-know-old-rockford-21768/)

Sr SQ 10-25-2006 10:42 PM
Anyone know old Rockford?
 
I have a 1998 Rockford Power 500.2
Can I run it at 2ohms bridged?

MR2NR 10-25-2006 10:45 PM
It was capable of it but it is really not recommended. Even bridged into 4 ohms most of those amps were closer to the 700w rms mark or more. I had rubn some of them that way before and while we did have the odd failure, it was done with the customer fully aware of the pitfalls of doing so. Make sure that this amp has a super good ground.

FusionMadsen 10-25-2006 10:51 PM
Originally Posted by MR2NR
has a super good ground.
Or several, to be safe.

mike bisson 10-25-2006 11:50 PM
That amp can run 2ohm mono ALL day with lots of power and a good ground -- we sold lots of them and wired them that way.

Hardwrkr 10-26-2006 05:25 AM
Originally Posted by MR2NR
It was capable of it but it is really not recommended. Even bridged into 4 ohms most of those amps were closer to the 700w rms mark or more. Make sure that this amp has a super good ground.
x2 It'll do it pretty easily at the expense of running hotter and a shorter lifespan.

Sr SQ 10-26-2006 09:23 AM
Thanks for the replies guys, I've been given mixed opinions weather or not it was one that could and since the manual never mentioned anything about it I thought I would ask the pros. I think I will just run it in stereo to be safe until I can find a match for it. Anyone have a grey 500.2 they want to part with LOL

Sr SQ 10-26-2006 09:30 AM
Originally Posted by MR2NR
It was capable of it but it is really not recommended. Even bridged into 4 ohms most of those amps were closer to the 700w rms mark or more. I had rubn some of them that way before and while we did have the odd failure, it was done with the customer fully aware of the pitfalls of doing so. Make sure that this amp has a super good ground.
Rob the manual says the amp does
250rms x 2 @ 4ohm
500rms x 2 @ 2ohm
1000rms x 1 in to a 4ohm load

MR2NR 10-26-2006 01:33 PM
Manual might have been mistaken or I might be. Mike was the rep at this time, perhaps he can chime in as well as I no longer have my old info handy on this amp. Most of the amps from this time had a model # that indicated the bridged 4 ohm output power IIRC. From what I remember it to be is this.

125w rms x 2 into 4 ohm
250w rms x 2 into 2 ohm
500w rms x 1 into 4 ohm

Hardwrkr 10-26-2006 08:17 PM
There are two very different RF 500.2 and my original comment/advice was for either one.

There's the big 1998 model 500.2
http://www.rockfordfosgate.com/scripts/rightnow.cfg/php.exe/enduser/fattach_get.php?p_sid=ZRhat6li&p_tbl=9&p_id=340&p_ created=1083781894

And the smaller 2001 model 500.2
http://www.rockfordfosgate.com/scripts/rightnow.cfg/php.exe/enduser/fattach_get.php?p_sid=ZRhat6li&p_tbl=9&p_id=313&p_ created=1083354353

Again, either will do 2ohm mono but at the expense of more heat and shorter lifespans.

Sr SQ 10-26-2006 08:41 PM
Originally Posted by Hardwrkr
There are two very different RF 500.2 and my original comment/advice was for either one.

There's the big 1998 model 500.2
http://www.rockfordfosgate.com/scripts/rightnow.cfg/php.exe/enduser/fattach_get.php?p_sid=ZRhat6li&p_tbl=9&p_id=340&p_ created=1083781894

And the smaller 2001 model 500.2
http://www.rockfordfosgate.com/scripts/rightnow.cfg/php.exe/enduser/fattach_get.php?p_sid=ZRhat6li&p_tbl=9&p_id=313&p_ created=1083354353

Again, either will do 2ohm mono but at the expense of more heat and shorter lifespans.
Yeah the first one is the one I have
The heatsink is the same as the 800a4
Thanks guys


All times are GMT -5. The time now is 06:21 PM.


© 2024 MH Sub I, LLC dba Internet Brands