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I know DEAD HORSE.. but if you feel like it,.. Help me with Class A/B vs Class D.
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<blockquote data-quote="Chromatic" data-source="post: 8222295" data-attributes="member: 659121"><p>I over-engineer on most things, for myself and for all my clients. I am a network engineer and systems designer for a living. The "gaming" rigs I build are side projects for clients usually.. but I can't even begin to count the number of machines I've built since 1996.</p><p></p><p>I always choose passive over active when the application supports it,.. ie: many business offices that I'm either building a network with client machines, or simply building a dozen or so client machines for them by X deadline. On such clients I usually try my best to run as few fans as absolutely necessary. Most of the time I get away with a cpu fan and that's it. If any case fans are included it's primarily because the cases I ordered came with them and I'm fine letting them run but design it where the system is in no way dependent on them working to run properly. -- Less moving parts = higher reliability from my experience. Which with clients is very, very easy to do in a business environment.</p><p></p><p>These "overkill" fans you speak of -- Are my own personal fans,.. I have had a long business relationship with Noctua and helped them launch their top end cooler back in 2008. So I get every new fan and heatsink product they come out with to review with no charge. So as you can imagine I have a slew of nice fans boxed up here.</p><p></p><p>I'm a big fan of larger fans at low rpm's primarily to keep things inaudible. So I will be running a Noctua 140mm fan in this location:</p><p></p><p><img src="http://&lt;!--url%7B0%7D--&gt;&lt;/p&gt;&lt;p&gt;%C2%A0&lt;/p&gt;&lt;p&gt;&lt;/div&gt;&lt;/blockquote&gt;&lt;blockquote%20data-ipsQuote=%22%22%20class=%22ipsQuote%22%20data-ipsquote-contentapp=%22forums%22%20data-ipsquote-contenttype=%22forums%22%20data-ipsquote-contentid=%22560071%22%20data-ipsquote-contentclass=%22forums_Topic%22&gt;&lt;div&gt;&lt;/p&gt;&lt;p&gt;19DBA.%20%20%20I%20have%20used%20100" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><a href="http://www.amazon.com/Cooler-Master-Bearing-Computer-Radiators/dp/B000O8I474/ref=sr_1_3?ie=UTF8&amp;qid=1390182918&amp;sr=8-3&amp;keywords=COOLERMASTER+120MM" target="_blank">Amazon.com: Cooler Master Sleeve Bearing 120mm Silent Fan for Computer Cases, CPU Coolers, and Radiators (Value 4-Pack): Electronics</a> They last several years.</p><p></p><p>I have a relationship with coolermaster as well.. again get cases and fans to review. I have a TON of CM fans.. Anywhere from 80mm to 240mm still in original packaging. I'd sell a lot of this stuff... but with how many machines I build in any given month the extra hardware on hand has really come in handy in a pinch.</p><p></p><p>I have nothing against the CM fans.. they work fine. I actually have two 120mm intake fans on the computer I'm using now in a CM HAF-XB EVO.. I didn't pull the CM fans out for the front intake. I did put in a Rheostat (fan controller) so I could tweak fans as this machine is running an i7-4770k up at about 4.8Ghz per core.. (water cooled).. and a GTX 780 Direct CU II OC from Asus among other hardware with heat.. So even with essentially the cutting edge with haswell, and 780, etc .. I still build with the added "challenge" of keeping it inaudible.. But I do have to say, the CM 120mm fairly low end case fans that came with this HAF XB EVO are pretty quiet. Even at 100 percent on the Rheostat it is far from "loud".. and at 70% it's quieter than the platters I have in it for data,.. enough of computer talk though.</p><p></p><p></p><p>Thanks for the links.. they are handy. I'm still working out the best way I want to mount this fan in the pictured layout I have going. Obviously not going to mount it against a side as it would pull very little air unless I put some holes in that wall. I've had a plan to built a shelf over the amp to give me some storage space in that glove box (cubby hole) location the amp is in behind the passenger seat. So I'm working with some ideas on mounting the 140mm fan as intake or exhaust built in flush with the bottom of the shelf with a small "grill" that's flush so nothing would fall into it.</p><p></p><p>As for how I wire.. I'm fairly particular with it, I give it thought and time when doing so.</p><p></p><p></p><p>Well, I have.. I also live in 110 degree summers.. but,.. This amp doesn't get hot enough to burn your hand,.. and I had it working hard for 3 hours at zero airflow. The wiring is not "Wrong".. heh.</p><p></p><p>Now, apparently my power/ground I chose for this is not up to your standards,.. but I felt comfortable with it and am still happy with the choice.. I used CCA.. 90/10 -- AS shown here:</p><p></p><p><a href="http://www.ebay.com/itm/390566057160?ssPageName=STRK:MEWNX:IT&amp;_trksid=p3984.m1497.l2649" target="_blank">KnuKonceptz KCA 4 Gauge True 4 Gauge Amp Kit Installation Wiring Kit | eBay</a></p><p></p><p>My install location has been in this thread and others,.. and I put it in this response.. so it's no mystery. The last amps I was referring to were mounted to the sealed box that had two JL 12's in it.. Plenty of air getting to them.. they were professionally installed by a crew who did things right.. a long time ago (10+ years). This amp is the first amp I've installed.. period. Did I make some mistakes.. I don't think so. Other than being a little rough on two panels that are adjacent to the where the console for the headunit is.. it went off without a hitch.</p><p></p><p>40 Amps.. you have a lot more experience in installs than my ONE I just did. If you look at my install thread you can see pretty much exactly what I did, if curious. Again though, I don't think my 4 gauge power and ground wires are of any issue here.. They are Copper clad aluminum .. 90/10 ratio.. I think for 70x4 and 280-300x1 these wires are just fine and I don't think they have anything to do with the thermal properties of this amp. But, that's my opinion, I'm always learning.</p><p></p><p>Thanks for your input and links!</p></blockquote><p></p>
[QUOTE="Chromatic, post: 8222295, member: 659121"] I over-engineer on most things, for myself and for all my clients. I am a network engineer and systems designer for a living. The "gaming" rigs I build are side projects for clients usually.. but I can't even begin to count the number of machines I've built since 1996. I always choose passive over active when the application supports it,.. ie: many business offices that I'm either building a network with client machines, or simply building a dozen or so client machines for them by X deadline. On such clients I usually try my best to run as few fans as absolutely necessary. Most of the time I get away with a cpu fan and that's it. If any case fans are included it's primarily because the cases I ordered came with them and I'm fine letting them run but design it where the system is in no way dependent on them working to run properly. -- Less moving parts = higher reliability from my experience. Which with clients is very, very easy to do in a business environment. These "overkill" fans you speak of -- Are my own personal fans,.. I have had a long business relationship with Noctua and helped them launch their top end cooler back in 2008. So I get every new fan and heatsink product they come out with to review with no charge. So as you can imagine I have a slew of nice fans boxed up here. I'm a big fan of larger fans at low rpm's primarily to keep things inaudible. So I will be running a Noctua 140mm fan in this location: [IMG]<!--url%7B0%7D--></p><p>%C2%A0</p><p></div></blockquote><blockquote%20data-ipsQuote=%22%22%20class=%22ipsQuote%22%20data-ipsquote-contentapp=%22forums%22%20data-ipsquote-contenttype=%22forums%22%20data-ipsquote-contentid=%22560071%22%20data-ipsquote-contentclass=%22forums_Topic%22><div></p><p>19DBA.%20%20%20I%20have%20used%20100[/IMG] [URL="http://www.amazon.com/Cooler-Master-Bearing-Computer-Radiators/dp/B000O8I474/ref=sr_1_3?ie=UTF8&qid=1390182918&sr=8-3&keywords=COOLERMASTER+120MM"]Amazon.com: Cooler Master Sleeve Bearing 120mm Silent Fan for Computer Cases, CPU Coolers, and Radiators (Value 4-Pack): Electronics[/URL] They last several years. I have a relationship with coolermaster as well.. again get cases and fans to review. I have a TON of CM fans.. Anywhere from 80mm to 240mm still in original packaging. I'd sell a lot of this stuff... but with how many machines I build in any given month the extra hardware on hand has really come in handy in a pinch. I have nothing against the CM fans.. they work fine. I actually have two 120mm intake fans on the computer I'm using now in a CM HAF-XB EVO.. I didn't pull the CM fans out for the front intake. I did put in a Rheostat (fan controller) so I could tweak fans as this machine is running an i7-4770k up at about 4.8Ghz per core.. (water cooled).. and a GTX 780 Direct CU II OC from Asus among other hardware with heat.. So even with essentially the cutting edge with haswell, and 780, etc .. I still build with the added "challenge" of keeping it inaudible.. But I do have to say, the CM 120mm fairly low end case fans that came with this HAF XB EVO are pretty quiet. Even at 100 percent on the Rheostat it is far from "loud".. and at 70% it's quieter than the platters I have in it for data,.. enough of computer talk though. Thanks for the links.. they are handy. I'm still working out the best way I want to mount this fan in the pictured layout I have going. Obviously not going to mount it against a side as it would pull very little air unless I put some holes in that wall. I've had a plan to built a shelf over the amp to give me some storage space in that glove box (cubby hole) location the amp is in behind the passenger seat. So I'm working with some ideas on mounting the 140mm fan as intake or exhaust built in flush with the bottom of the shelf with a small "grill" that's flush so nothing would fall into it. As for how I wire.. I'm fairly particular with it, I give it thought and time when doing so. Well, I have.. I also live in 110 degree summers.. but,.. This amp doesn't get hot enough to burn your hand,.. and I had it working hard for 3 hours at zero airflow. The wiring is not "Wrong".. heh. Now, apparently my power/ground I chose for this is not up to your standards,.. but I felt comfortable with it and am still happy with the choice.. I used CCA.. 90/10 -- AS shown here: [URL="http://www.ebay.com/itm/390566057160?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649"]KnuKonceptz KCA 4 Gauge True 4 Gauge Amp Kit Installation Wiring Kit | eBay[/URL] My install location has been in this thread and others,.. and I put it in this response.. so it's no mystery. The last amps I was referring to were mounted to the sealed box that had two JL 12's in it.. Plenty of air getting to them.. they were professionally installed by a crew who did things right.. a long time ago (10+ years). This amp is the first amp I've installed.. period. Did I make some mistakes.. I don't think so. Other than being a little rough on two panels that are adjacent to the where the console for the headunit is.. it went off without a hitch. 40 Amps.. you have a lot more experience in installs than my ONE I just did. If you look at my install thread you can see pretty much exactly what I did, if curious. Again though, I don't think my 4 gauge power and ground wires are of any issue here.. They are Copper clad aluminum .. 90/10 ratio.. I think for 70x4 and 280-300x1 these wires are just fine and I don't think they have anything to do with the thermal properties of this amp. But, that's my opinion, I'm always learning. Thanks for your input and links! [/QUOTE]
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I know DEAD HORSE.. but if you feel like it,.. Help me with Class A/B vs Class D.
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