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<blockquote data-quote="nineball" data-source="post: 6244950" data-attributes="member: 585829">sorry about that, the first link google showed me for was from onlinecarstereo.com and they listed it at 40. you are correct, it is 60 x 4 @ 4ohm. you can run the amp 3 ways:40 x 4 @ 4ohm (or 80 x 4 @ 2ohm)160 x 2 @ 4ohm (bridging both sets of channels)(40 x 2 @ 4ohm -or- 80 x 2 @ 2ohm) + (160 x 1 @ 4ohm [3&amp;amp;4 bridged])now that the bridged power has doubled (in my mind <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick out tongue&nbsp; &nbsp; :p" loading="lazy" data-shortname=":p" />) you can easily power an 8&quot; or 10&quot; sub and have it produce sound you will be happy with. there reall is no need for the mono amp, but if you do buy it you should buy a dual voice coil sub with each being 2ohms to take full advantage of the amp&#039;s capabilities.nothing personal but it&#039;s a given that most sony equipment is on the lower side of the spectrum and usually has over rated power numbers. even if that is the case those 6x9 speakers could probably easily take almost double the power that amp is giving them. it also takes more power to produce lower end sound. those 2 things are working together against you.one last thing to do is to check the crossover settings (high pass and low pass) on the amp and hu. you might get lucky and find that the rear channels are crossed over too high.</blockquote>

[QUOTE="nineball, post: 6244950, member: 585829"] sorry about that, the first link google showed me for was from onlinecarstereo.com and they listed it at 40. you are correct, it is 60 x 4 @ 4ohm. you can run the amp 3 ways: 40 x 4 @ 4ohm (or 80 x 4 @ 2ohm) 160 x 2 @ 4ohm (bridging both sets of channels) (40 x 2 @ 4ohm -or- 80 x 2 @ 2ohm) + (160 x 1 @ 4ohm [3&4 bridged]) now that the bridged power has doubled (in my mind :P) you can easily power an 8" or 10" sub and have it produce sound you will be happy with. there reall is no need for the mono amp, but if you do buy it you should buy a dual voice coil sub with each being 2ohms to take full advantage of the amp's capabilities. nothing personal but it's a given that most sony equipment is on the lower side of the spectrum and usually has over rated power numbers. even if that is the case those 6x9 speakers could probably easily take almost double the power that amp is giving them. it also takes more power to produce lower end sound. those 2 things are working together against you. one last thing to do is to check the crossover settings (high pass and low pass) on the amp and hu. you might get lucky and find that the rear channels are crossed over too high. [/QUOTE]

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