2 ohm or not 2 ohm

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hustlin247

Copper - Posts: 79

Joined: June 08, 2004

Posted: June 18, 2007 at 2:27 AM / IP Logged

Hey... an RF 1500.1bd is ONE ohm stable anyways! So, running 2ohm is conservative.

I ran my 10001bd at .67 ohms without even heating the amp up... I did however toast my alternator which is another story...

'94 Ford Explorer / Kenwood KVT-815DVD / RF Power T1682C 6x8 (all doors) / RF Power T10001 / 12" Kicker L5 (x4) / Optima Yellow Top Battery

3000dclass

Copper - Posts: 50

Joined: June 05, 2007

Posted: June 18, 2007 at 3:48 PM / IP Logged

hustlin247, im not to sure if your right that the RF 1500.1bd actually is made to go down to one ohm. I never had the boxes for my amps, BUT, the stickers from the manufacturer on the back of the amps state only 4ohm w/750rms watts, and 2 ohm w/1500rms watts.

What would 1 ohm be then, 3000rms watts?

One of my RF 1500.1 stickers says I can bridge it, dunno why I would want to do that with a mono amp though...

haemphyst

Platinum - Posts: 5,054

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Joined: January 19, 2003

Location: Michigan, Bouvet Island

Posted: June 18, 2007 at 3:55 PM / IP Logged

If the amplifier power supply is "stiff" enough, it would be 3000 watts, but I doubt that it is. Fosgate hasn't ever been a really high CURRENT amplifier.

2000-2250 might be a fairly safe guess, but as you say, it's probably not rated at that load anyway.

It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: June 18, 2007 at 4:47 PM / IP Logged

There are more aspects to car audio than max SPL or power utilization.

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tcss

Silver - Posts: 1,623

Joined: June 07, 2004

Location: United States

Posted: June 18, 2007 at 5:04 PM / IP Logged

There's head units that can show pictures of dolphins and stuff!

There is no such thing as free installation!

hustlin247

Copper - Posts: 79

Joined: June 08, 2004

Posted: June 18, 2007 at 7:05 PM / IP Logged

Oh good sirs,

I assure that your RF Power 1500.1 bd is in fact 1ohm stable.

All RF's current POWER series monoblock amps are 1ohm stable and this data is straight from Rockford Fosgate.

Your amp is rated 1500 watts x 1 @ 1 ohm. Check it out: http://www.rockfordfosgate.com/products/product_details.asp?cat_id=2&series_id=104&family_id=105&item_id=107999&locale=en_US&p_status=

'94 Ford Explorer / Kenwood KVT-815DVD / RF Power T1682C 6x8 (all doors) / RF Power T10001 / 12" Kicker L5 (x4) / Optima Yellow Top Battery

hustlin247

Copper - Posts: 79

Joined: June 08, 2004

Posted: June 18, 2007 at 7:09 PM / IP Logged

Uh oh. The sticker on your amp says 1500 x 1 @ 2ohm?

Is this amp not from their current series of amps? According to RF's website... well... you see my other post...

'94 Ford Explorer / Kenwood KVT-815DVD / RF Power T1682C 6x8 (all doors) / RF Power T10001 / 12" Kicker L5 (x4) / Optima Yellow Top Battery

aznboi3644

Gold - Posts: 2,600

This member consistently provides reliable information

Joined: May 01, 2006

Location: United States

Posted: June 19, 2007 at 12:49 AM / IP Logged

damn...check that efficiency, drops around 18% from 4 ohms to 1 ohm

86% @ 4-Ohm

85% @ 2-Ohm

68% @ 1-Ohm

haemphyst

Platinum - Posts: 5,054

Joined: January 19, 2003

Location: Michigan, Bouvet Island

Posted: June 19, 2007 at 8:40 AM / IP Logged

aznboi3644 wrote:

damn...check that efficiency, drops around 18% from 4 ohms to 1 ohm

86% @ 4-Ohm

85% @ 2-Ohm

68% @ 1-Ohm

The prosecution rests, your honor.

It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

jazzcustom131

Copper - Posts: 175

Joined: October 10, 2004

Location: United States

Posted: June 19, 2007 at 11:12 PM / IP Logged

3000d...

i'm with some of the "older" guys on here. I'm notorious for buying an amplifier rated well beyond what my speakers are capable of handling, then simply running it at lower draws. It is less stressful on the equipment...

it's like going to the gym, you can press 200 pounds many less times than you can 20.

Go 4!!!

-----and by "older" I mean people who i've seen post ALOT on here, and have individually talked to before... I know you know you're stuff.

Greed is for amateurs.

Disorder,chaos,anarchy now THAT is fun!!

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2 ohm or not 2 ohm

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