Hello again.<p>I posted a message a few days ago asking about the potential dangers of mounting an amplifier upsidedown on the rear deck. I received numer of responses. They were very helpful, especially the link to a discussion about this topic on the CarAudio Forum. Thank you to all who contributed.<p>I decided, to be safe, to fabricate a small bracket so that I could mount the amplifier rightsideup under the rear deck. This will still keep it mostly out of sight and, with proper clearance, provide sufficient air circulation. I did not really want to mount external fans and the shop I bought the components from did not stock an amplifier with an internal fan.<p>I have found there is much heated (no punn intended) discussion about this topic. It ranges from basic personal experiences to complicated discussions about heat dissipation and airflow.<p>I basically made this decision to be safe. When I asked an installer at the shop where I bought the components (I am installing it myself) if mounting upsidedown would be a problem, he kept saying "You are not going to play it loud, are you?". I do not intend to play as loud as some people, however, I did not want to have to keep the volume down during my favourite songs for fear my amplifier might overheat. I felt there were two main points contributing to my decision.<p>1) This perceived 'operational window' the installer seemed to have in his head between high amplifier usage and moderate amplifier usage, and,<p>2) I moved up to a larger amplifier because I was not convinced 25W x 4 + 80W was enough and I did not want to be disappointed. This alone, in my opinion, pushed the decision over the top to mount the amplifier upright. (more power = more heat)<p>Anyway, sorry about my ramblings, however, since this is such a passionately discussed topic I wanted to relay what I decided and how I decided. I know there will be other people who ask this question. It is not an easy one to answer.<p>Thank you again for your contributions.<p>TGB 1.8T qMS

I made it very simple.<p>I went down to my local hardware store and bought 8 corner brackets ('L' shaped bracket used to attach boards together at right angles). The brackets are about 1/2" wide, about 3 1/2" long from the corner to each end, and have 2 pre-drilled holes on each side.<p>B<br>B<br>B<br>BBBBBBB<p>I started by placing one of the brackets under the amplifier so that the pre-drilled holes in the amplifier and the bracket line-up. I used a small nut and bolt to fasten the bracket to the amplifier.<p>B AAAAAAAA<br>B AAAAAAAA<br>B AAAAAAAAAA<br>BBBBBBB<p>I fastend a second corner bracket to the corner bracket already affixed to the amplifier using the pre-drilled holes creating a 'U' shaped bracket. I then repeated the entire procedure for the other three corners of the amplifier.<p>BBBBBBB<br>B<br>B AAAAAAAA<br>B AAAAAAAA<br>B AAAAAAAAAA<br>BBBBBBB<p>At this point, I have one remaining set of pre-drilled holes on the top of the 'U' shaped brackets. I then used one existing hole and three new holes in the rear deck of the car to fasten the entire apparatus to the rear deck.<p>At the end of the day, the amplifier hangs down from the rear deck about 3 1/2" and I have about more than 1 1/2" of clearance above the amplifier for air circulation.<p>It's maybe not the most attractive, but it works well and is very sturdy. I also like the arrangement because I used the hollow compartment in the rear deck that runs along the top of the rear seats to run most of my cabling so it is out of site. The cabling enters the trunk through one of the circular cutouts in this compartment. Because the amplifier is so close to this cutout, the cables are basically invisible from the trunk. You can see them when you lower the rear seat, but just barely.<p>If you need more information, let me know.<p>TGB 1.8T qMS