stk4231 bridge

psychosteve · 18th March 2005, 02:53 PM

can anyone rearange the circuit to bridge this chip, or is it easyer to build it as is and use an opamp inverter to power the bridge???

cheers guys, steve.. ..

shon35us · 20th March 2009, 10:52 PM

Your not alone I have the same question, so I bought 2 chips hoping to get about 2x225w each one in BTL mode

pacificblue · 21st March 2009, 09:39 AM

Are you aware that the STK4231 is designed for 8 Ohm loads? That means you need a 16 Ohm speaker, if you want to bridge two channels.
If you want 200 W into a 4 Ohm load, use two channels in parallel. If you want 200 W into an 8 Ohm load, bridge/parallel four channels or use the STK4050 or build a solid state amplifier or buy a PA amplifier, which will turn out cheaper.

In either case, find out, what the use of 200 W is, before you start.

Bridging works like with any other amplifier. There are several ways to do it. This is the simplest.

destroy2 · 29th June 2011, 04:20 PM

I have stk4231 so should i use 8 or 4 Ohm speaker to get 100w per channel?

kevinkr · 29th June 2011, 04:36 PM

Quote:

Originally Posted by destroy2

I have stk4231 so should i use 8 or 4 Ohm speaker to get 100w per channel?

See post #3 above for your answer..

18th March 2005, 02:53 PM	#1
psychosteve diyAudio Member Join Date: Sep 2004 Location: coventry england	stk4231 bridge can anyone rearange the circuit to bridge this chip, or is it easyer to build it as is and use an opamp inverter to power the bridge??? cheers guys, steve.. .. __________________ you all laugh because im different, i laugh because youre all the same.. ..

20th March 2009, 10:52 PM	#2
shon35us diyAudio Member Join Date: Oct 2005	HMMM Your not alone I have the same question, so I bought 2 chips hoping to get about 2x225w each one in BTL mode

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21st March 2009, 09:39 AM	#3
pacificblue diyAudio Member Join Date: May 2008	Are you aware that the STK4231 is designed for 8 Ohm loads? That means you need a 16 Ohm speaker, if you want to bridge two channels. If you want 200 W into a 4 Ohm load, use two channels in parallel. If you want 200 W into an 8 Ohm load, bridge/parallel four channels or use the STK4050 or build a solid state amplifier or buy a PA amplifier, which will turn out cheaper. In either case, find out, what the use of 200 W is, before you start. Bridging works like with any other amplifier. There are several ways to do it. This is the simplest. __________________ If you've always done it like that, then it's probably wrong. (Henry Ford)

29th June 2011, 04:20 PM	#4
destroy2 diyAudio Member Join Date: May 2011	I have stk4231 so should i use 8 or 4 Ohm speaker to get 100w per channel?