danhkr Posted August 21, 2013 Share Posted August 21, 2013 Hello, anyone got or used the above amp? Just wondering if I can safetly use it in stereo with four 4ohm cabs, effectively making a 2ohm load? Any advice appreciate, thanks Quote Link to comment Share on other sites More sharing options...
Lfalex v1.1 Posted August 21, 2013 Share Posted August 21, 2013 From what I recall of my 1202, it would run to a 2ohm load in stereo only. In bridged mode, the limit is 4ohm. Have a look for downloadable PDF instructions. Is there not some clue on the rear panel? Quote Link to comment Share on other sites More sharing options...
BigRedX Posted August 21, 2013 Share Posted August 21, 2013 Bridge mode is normally twice the load of the individual channel minimum load. So a stereo amp that goes down to 4Ω for each channel requires a minimum of 8Ω in bridge mode. Quote Link to comment Share on other sites More sharing options...
danhkr Posted August 22, 2013 Author Share Posted August 22, 2013 Can't find a manual unfortunately. Suggests 2ohms in stereo here; [url="http://www.qscaudio.com/products/amps/plx/plx.htm"]http://www.qscaudio.com/products/amps/plx/plx.htm[/url] so I assume it'll be ok. Band have got two Peavy Hysis 1xt's and two 115xt's - all 4ohm cabs. So unless anyone can tell me otherwise, it seems I can run the tops off one channel and the subs off the other? Quote Link to comment Share on other sites More sharing options...
mdc Posted August 22, 2013 Share Posted August 22, 2013 Hi, manual is still available from QSC website, try this [url="http://qscservice.com/files/8013/6329/6136/plxmnl.pdf"]http://qscservice.co...6136/plxmnl.pdf[/url] cheers Quote Link to comment Share on other sites More sharing options...
BigRedX Posted August 23, 2013 Share Posted August 23, 2013 [quote name='mdc' timestamp='1377209643' post='2184958'] Hi, manual is still available from QSC website, try this [url="http://qscservice.com/files/8013/6329/6136/plxmnl.pdf"]http://qscservice.co...6136/plxmnl.pdf[/url] cheers [/quote] And on page 11 it confirms that the minimum bridge load is 4Ω (twice the minimum single channel load of 2Ω). However you can run it in parallel input mode (see page 10) where the signal on channel 1 is also routed to channel 2 and then connect each pair of 4Ω speakers to each channel outputs in non-bridged mode to give an acceptable 2Ω load on each channel. Quote Link to comment Share on other sites More sharing options...
Monckyman Posted August 23, 2013 Share Posted August 23, 2013 As above, no need for bridge mode. If you use a simple half decent cross over you'll be able to send the right frequencies to the right cabs and get a much cleaner and tighter sound overall. Quote Link to comment Share on other sites More sharing options...
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