what ohm am i running?

[HoLDenGuY]

Hi guys i have a rockford fosgate t1001bd 1000 watt amplifer, im running 2 infinity 250watt rms subs from it.
I know usually mono amps just have one channel + and -, but this rockford amp is like a 4 channel amp and has 2 + - on it, one amp is connected to the first set of + and - and the other is connected to the other + and -. Anyone know what ohm its running at? hope that makes sense! thanks

 

[Tasmaniak]

2ohms......

 

[craigvk]

If you have two subs and you connect one each to the +ve and -ve terminals then it's 2x 4ohm.

 

[Tasmaniak]

no, thats if you connect them in series. then you will have 8ohms. but when you connect them in parralel you get 2ohms.

 

[craigvk]

Over here car speakers are 4 ohm types. If he had 2 +ve terminals and 2 -ve terminals and to each of them he connected a speaker, then there would be a 4 ohm load on each channel. Am I missing something here?

 

[craigvk]

AFAIK the OP isn't running a mono amp looking at his post. If he was then yeah there would be a 2 ohm load if the 2 subs were wired in parallel.

 

[HoLDenGuY]

it is a mono amp but it has 2 + - just like a 4 channel amp

 

[craigvk]

Hi HoLDenGuY,

It can't be a mono amp if it has two +ve and -ve terminals.
AFAIK mono amps are single channel? I am not familiar with your setup. Not sure what you mean.

 

[craigvk]

Are you sure it isn't a 2 channel amp? If you connect each sub to each of the +ve and -ve terminals then it runs in two channel mode and therefor you have a 4 ohm load on each channel.

 

[Genesis]

That model is a single channel amplifier.

Channels 1
Per channel power
CEA-2006 compliant
500 W x 1 @ 4 Ohms RMS
750 W x 1 @ 2 Ohms RMS
1000 W x 1 @ 1 Ohms RMS
Total power 1000 Watts
Bridgeable Master Sync
Power Sync
(bd-sync2)
Crossover LP 32-250Hz 24dB per Octave
Subsonic Filter 28Hz
Tone controls Bass Control

0 to 18 dB @ 35-70 Hz
Signal input Low level -
Quantity - 1
Type - RCA(pr)
Line output 1 RCA(pr)


Phase control 0/180 degrees
Power input Connector - Block
Wire gauge - 1/0 AWG
Speaker output Block
Power supply topology
Output topology
Display
Heatsink Type -Cast

Cooling -Fan Cooled
Protection
Remote control Included
Type - Wired
Controls - Bass
Class B/D
Marine use
Specifications
Stereo/Mix mono
Frequency response 20 to 300 Hz +/- .5 dB
Dimensions 2.6 X 12.8 X 18 (inches)

Source: http://www.mobileonesales.com/product_p/t1001bd.htm