Help with Sundown amp

[rdwilson77 0]

I am new to the forum, and I am very interested in the sundown amps. I have 3 RE SX D2 10 inch subs that I need power for. Which Sundown would work the best to power these subs? They take 1K rms each. Don't know if I should go with 1 1500d or 2 or....? These are not going to be used for competition, just daily driving. Thanks.

Edited July 25, 2008 by rdwilson77

[rdwilson77 0]

I really want to use Sundown amps in my set up. What I have heard about them is all good. I just do not know which one(s) I need to get to match up the ohms and power correctly. Any help would be appreciated.

[shizzzon 461]

the 3000d would be fine.

RE SX's use i believe 1.2 ohm DCR coils so wired in series then all back in parallel would give you a 0.8 ohm load which is pretty perfect for a 1ohm stable amp.

I vote 3000d.

[rdwilson77 0]

If I was only going to run 2 of the subs, would 1 1500d be okay for them?

[shizzzon 461]

as in enough power? it'd be enough to get them decently loud, yes.

You'd have em wired to a 2ohm load but those subs can actually take one of those amps per sub.

IF you are worried about the price of those amps, go here - www.db-r.com you can get ya a used 3000d for pretty good deal. Don't worry, that place is guaranteed through Sundown Audio so you won't get ripped.

[rdwilson77 0]

Nah, not really worried about money. Just want to get the what is best for the subs I have. I have been using Orion amps for close to 15 years and have been pretty loyal to their amps. Ready to move on to bigger and better things. What kind of extra batteries do you recommend for the 3000d?

[shizzzon 461]

hmm, i'll give ya a rule of thumb-

the 3000d-

If ran @2ohms, you will require at least an 80aH batt in the back OR a high output alternator around 130A. You could go as low as 90A maybe but would definitely require that 80aH batt. I wouldnt recommend running a setup like that, longterm for years off an alt that small though. May burn it up.

If ran @1ohm, you will require at least 150aH batt in the back OR a high output alternator around 200A. You could go down to maybe a 150A alt but would def need at least 150aH of batt back there.

If running at 1 ohm, it's HIGHLY suggested to put some form of battery back there regardless if your alt is 300A. You need a little something something back there for starters for something that powerful.

[rdwilson77 0]

My factory alt is rated at 130amps. I was looking at some of the Kinetik batteries and batcap.

[shizzzon 461]

well for 2 ohms, that should be enough.

For 1 ohm, i'd invest in about 150-200aH.

Remember, for 1 ohm, your alt isn't strong enough so it's possible to overwork your alt overtime from either trying to power it at 1 ohm or trying to charge these batts for long periods of time. That's why it's suggested that if u do not upgrade your alt but decide to run at 1ohm that for long term durability, do not bump this setup for long periods of time. LEt the alt charge the batts for about 10-20 min intervals every now and then.

It would be very wise to install a remote volt meter so if your voltage ever briefly dips below 12.5v, in my opinion, turn it down for a little bit and let the alt keep the batts in the back in top notch shape.

[emperorjj1 2]

3k on 2 sx's isnt the best of ideas

[rdwilson77 0]

So Emperor, which amp do you think I should use with the 2 sx d2 subs if I were to use just 2 subs, not three?

Edited July 26, 2008 by rdwilson77

[emperorjj1 2]

if u have D2 subs and run a 3000d at 2 ohms that might do it. SX's are beastly subs and can take a bit but i wouldnt recommend +500w extra per sub

[rdwilson77 0]

For two, I was thinking maybe a 1500d or two 1000d's.

[emperorjj1 2]

2 1000ds would work too... forgot about them

[rdwilson77 0]

If I were to run a 9a78 Deka intimitdator under the hood and a couple of 9a31's in the back, would I need to use an isolator?

[sundownz 197]

If I were to run a 9a78 Deka intimitdator under the hood and a couple of 9a31's in the back, would I need to use an isolator?

Nope.