SI T-Amp 2 ohm load

edjosh23 · 20th February 2007, 09:11 PM

I have a SI T-amp waiting for me at home, along with all the parts needed to do the neccisary mods. I am in the process of building a pair of bipolar Onken style enclosures for 4ohm speakers. I was wondering if I could wire the drivers in parallel if the series restistance of the speaker wire was more than 2 ohms (it will probably be more like 4 ohms)?

Thanks,

Josh

BWRX · 21st February 2007, 04:57 AM

The SI can handle a 4ohm load but it will get much warmer than with an 8ohm load. A 2ohm load will be problematic unless you only listen at very low volume levels.

A length of speaker wire would need to be very long or have a very small gauge in order to have a resistance of 2 ohms.

You'd probably be better off using two amps, one per driver, sending each amp the same input signal.

edjosh23 · 21st February 2007, 05:54 AM

Brian,

thanks for the responce, I'll check the resistance, but I'm pretty positive it is more than 2ohms. I use cat 5, no not single strands, I do 4.

Not sure if I told you, but I did buy the soldering iron you recommended, I've only gotten to use it to build a mic preamp. But it seems very nice. Much, much nicer than my radio shack iron. I also decided to get the soldering tweezers too.

Thanks,

Josh

20th February 2007, 09:11 PM	#1
edjosh23 Minimalist diyAudio Member Join Date: Oct 2004 Location: Raleigh/Atlanta	SI T-Amp 2 ohm load I have a SI T-amp waiting for me at home, along with all the parts needed to do the neccisary mods. I am in the process of building a pair of bipolar Onken style enclosures for 4ohm speakers. I was wondering if I could wire the drivers in parallel if the series restistance of the speaker wire was more than 2 ohms (it will probably be more like 4 ohms)? Thanks, Josh

21st February 2007, 04:57 AM	#2
BWRX diyAudio Moderator Emeritus Join Date: Jan 2005 Location: Pennsylvania	The SI can handle a 4ohm load but it will get much warmer than with an 8ohm load. A 2ohm load will be problematic unless you only listen at very low volume levels. A length of speaker wire would need to be very long or have a very small gauge in order to have a resistance of 2 ohms. You'd probably be better off using two amps, one per driver, sending each amp the same input signal. __________________ Brian

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21st February 2007, 05:54 AM	#3
edjosh23 Minimalist diyAudio Member Join Date: Oct 2004 Location: Raleigh/Atlanta	Brian, thanks for the responce, I'll check the resistance, but I'm pretty positive it is more than 2ohms. I use cat 5, no not single strands, I do 4. Not sure if I told you, but I did buy the soldering iron you recommended, I've only gotten to use it to build a mic preamp. But it seems very nice. Much, much nicer than my radio shack iron. I also decided to get the soldering tweezers too. Thanks, Josh

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