WTK: 5 channel amplifiers

marvin23 · Postby **marvin23** » March 18th, 2013, 9:08 pm

i was just wondering....can the sub channel on a 5 channel amp run on 2 ohms, while the other 4 channels run at 4 ohms? Will having these 2 different figures on the same unit have any negative effects or is it safe?
The amp is a phoenix gold sd 1300.5.......thanks again..

marvin23 · Postby **marvin23** » March 18th, 2013, 9:11 pm

according to the amp:

Frequency Response: ± 1dB from 20Hz to 20kHz
Signal to Noise Ratio: >100dB
High Pass Crossovers: 12dB per Octave
Low Pass Crossover: 18dB per Octave
High Pass Crossover Range: 15Hz to 250Hz
Low Pass Crossover Range: 30Hz to 300Hz
Bass Boost @ 45Hz: 0 to +18dB
Low Level Input Range: 200 millivolts to 8 volts
Front and Rear Channels Lowest Load: 4 ohms Bridged or 2 ohms Stereo
Subwoofer Channel Lowest Load: 2 ohm
Typical Efficiency: 70%
Damping Factor Greater than 200

Postby **- Rovin's car audio -** » March 18th, 2013, 9:39 pm

its made for that - once u dont go below d recommended ohm u good to go ...

SQ Audio · Postby **SQ Audio** » March 18th, 2013, 10:01 pm

^^^yup^^^

Postby **nervewrecker** » March 18th, 2013, 10:20 pm

- Rovin's car audio - wrote:its made for that - once u dont go below d recommended impedance u good to go ...

What happen to you boy? You speak raj now?

3stagevtec · Postby **3stagevtec** » March 19th, 2013, 1:30 am

nervewrecker wrote:
- Rovin's car audio - wrote:its made for that - once u dont go below d recommended impedance u good to go ...

What happen to you boy? You speak raj now?

Generally speaking, the lower the impedance you run, the more power you make but sacrifice efficiency.

The higher impedance will make a little less power but gain you on efficiency. THD and damping factor should be higher here as well.