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PDX-V9 Amp Tuning Questions For Focal PS165V1 Active
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<blockquote data-quote="imsickofweed" data-source="post: 8642797" data-attributes="member: 668971"><p>I found the spec sheet for the woofer of the component set, but cant find anything for the tweeter. I just set gains by ear on the tweeter, but I set by DMM at 80wrms for the woofer. My HU starts distorting around 52/62 volume, but I set my gains at 47/62. Im getting sqrt(4x80)=17.88VAC and that basically puts my gain knob almost to the end of the dial. My sheet from the amp factory says it tested at 118wrms, advertised at 100wrms, but Im toping out close to 90wrms if I go the whole way. Im assuming its because my voltage is at 13.7v and they do tests at 14.4v. Its way louder than I really like to listen to at max volume so I backed it down a tad to around 17v at 47/62 volume and I normally listen in the 20-28/62 range. The tweeters were set around 40wrms and mounted in factory sail panel location, they felt a little bright so Ive turned the gain down to around 35wrms. I want to get a pink noise disk and see what my iphone rta says Im at, but right now Im pretty happy.</p><p></p><p>Tweeters are crossed at 4kHz on a 12dB slope</p><p></p><p>Mids are crossed at 100Hz to 4kHz on a 12dB slope</p><p></p><p>Sub is 20Hz-100Hz on the same 12dB slope</p><p></p><p>Its all done with the amp so 12dB is all I got, the sub is a kicker 6.75” in the factory box with 150wrms and it bottoms out at 28/62 volume. Planning on a custom sealed stealth box behind front passenger seat to hold an 8” or 10” capable of 500wrms. Rough measurements give me 7” from floor to box top so 3/4” mdf and room for stealth fabric and cone excursion give me around 5” of top mount depth. The rear seats have to fold down on top of the sub to carry cargo at times so I dont want the sub hitting the seat in that position. Downfiring is a possibility and probably preferable for how I use the truck, but it seems Id get more bass if it fires up. Right now Im a little tight so Im looking for a CL special under $100 with single sub and box to bounce around in the hatch area til I can build the box.</p><p></p><p>As for the tweeters and mids crossover points I might try going with 3 or 3.5kHz since those are the other 2 options that you can select from in the included passive crossovers. Im open to any suggestions for the sub/box, crossover points, tweeter gain settings, or iphone rta app tuning procedures.</p></blockquote><p></p>
[QUOTE="imsickofweed, post: 8642797, member: 668971"] I found the spec sheet for the woofer of the component set, but cant find anything for the tweeter. I just set gains by ear on the tweeter, but I set by DMM at 80wrms for the woofer. My HU starts distorting around 52/62 volume, but I set my gains at 47/62. Im getting sqrt(4x80)=17.88VAC and that basically puts my gain knob almost to the end of the dial. My sheet from the amp factory says it tested at 118wrms, advertised at 100wrms, but Im toping out close to 90wrms if I go the whole way. Im assuming its because my voltage is at 13.7v and they do tests at 14.4v. Its way louder than I really like to listen to at max volume so I backed it down a tad to around 17v at 47/62 volume and I normally listen in the 20-28/62 range. The tweeters were set around 40wrms and mounted in factory sail panel location, they felt a little bright so Ive turned the gain down to around 35wrms. I want to get a pink noise disk and see what my iphone rta says Im at, but right now Im pretty happy. Tweeters are crossed at 4kHz on a 12dB slope Mids are crossed at 100Hz to 4kHz on a 12dB slope Sub is 20Hz-100Hz on the same 12dB slope Its all done with the amp so 12dB is all I got, the sub is a kicker 6.75” in the factory box with 150wrms and it bottoms out at 28/62 volume. Planning on a custom sealed stealth box behind front passenger seat to hold an 8” or 10” capable of 500wrms. Rough measurements give me 7” from floor to box top so 3/4” mdf and room for stealth fabric and cone excursion give me around 5” of top mount depth. The rear seats have to fold down on top of the sub to carry cargo at times so I dont want the sub hitting the seat in that position. Downfiring is a possibility and probably preferable for how I use the truck, but it seems Id get more bass if it fires up. Right now Im a little tight so Im looking for a CL special under $100 with single sub and box to bounce around in the hatch area til I can build the box. As for the tweeters and mids crossover points I might try going with 3 or 3.5kHz since those are the other 2 options that you can select from in the included passive crossovers. Im open to any suggestions for the sub/box, crossover points, tweeter gain settings, or iphone rta app tuning procedures. [/QUOTE]
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