When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
On my SD1200.4 (4) Evox with Boom HU i am running fairing(4ohm) and lowers (4Ohm)off individual channels 1-4 of amp. Per the manual, stereo output voltage should be 24.5 v. (see bottom attach.) Per the Gains sticky thread, if im putting 300w to each speaker @4 ohms shouldn't I be at 34.6v on each channel. dont want to blow speakers but also want to maximize my power. Initially when i set gains @ 3/4 volume using meter and 1KZ wave i need to set volume at 5-6 bars from max to even read that low. Am I actually seeing a 2 ohm load on my speakers.
Yeah i did first time. pulled fairing just now and reading 33v on 1&2 and 22 on 3&4 and wont go up on3,4 i better check my output/input rca connections from dsr and make sure im good to go, something amiss here. ill recheck tommorrow, thanks for your help
Yeah i did first time. pulled fairing just now and reading 33v on 1&2 and 22 on 3&4 and wont go up on3,4 i better check my output/input rca connections from dsr and make sure im good to go, something amiss here. ill recheck tommorrow, thanks for your help
I just had this issue with a different head unit and found this info below explaining the VRms selections during setup in the DSR1.
As for max volume on the headunit, its nice to use a distortion meter to see how high you can go. But a couple bars from max is fine.
And as for 300x4, depends on which amp you have 2ohm or 4ohm. If you have the 4 ohm youll get the 198x4. But either way, Id bridge it and get 600x2 at 2ohm...each speaker will get 300w. Fairing speakers to bridged 1&2 and other two to 3&4.
Measure with bike off, play 1000hz test time, turn up head unit and adjust to 34.64 across the indicated bridged leads. Repeat for other pair.
I just had this issue with a different head unit and found this info below explaining the VRms selections during setup in the DSR1.
As for max volume on the headunit, its nice to use a distortion meter to see how high you can go. But a couple bars from max is fine.
And as for 300x4, depends on which amp you have 2ohm or 4ohm. If you have the 4 ohm youll get the 198x4. So, bridge it and get 600x2 at 2ohm, each speaker will get 300w. Fairing speakers to bridged 1&2 and other two to 3&4.
Measure with bike off, play 1000hz test time, turn up head unit and adjust to 34.64 across the indicated bridged leads. Repeat for other pair.
Measuring with bike off is incorrect. Once you start the bike the voltage will be much higher and you will end up
with magic smoke if you run it to your max setting.
I set with bike running at 3 bars from max I did trim dsr to -4 DB then ran gains onn amp to 29VAC for upper and lowers I dont want bridged cause i want sound in stereo, also dont need to bridge cause the DDaw6.5s and AT28 tweets only need 200w or so in fairing at max volume where im at i should be seeing around 200-220w.
any input is welcomed though
I disagree. If you use the specs from 12.6 rather than 14.4. Its always worked for me.
Heres my thinking.... you still adjust the balance etc later, turning down (voltage). And usually Im cutting on eq to smooth sound which also cuts voltage. And regardless you turn up max volume to a safe level dependent on song and source.
Once you start bike, voltage is usually under 14 anyway. and would be a different spot to tune too on the chart per the output at that voltage. Meaning if you tune to the output of 14.4 at 14.4, youll be at the same spot on the chart with the bike off.
Ive never hurt a speaker by sending a lot of clean power.
I promise itll play clean and loud at the volume... at that said 34.6 for this example.
I set with bike running at 3 bars from max I did trim dsr to -4 DB then ran gains onn amp to 29VAC for upper and lowers I dont want bridged cause i want sound in stereo, also dont need to bridge cause the DDaw6.5s and AT28 tweets only need 200w or so in fairing at max volume where im at i should be seeing around 200-220w.
any input is welcomed though
Tune that channel to the voltage you want per the chart. Plus youll be turning down those tweeters anyway with the DSR.... which is less voltage.
Youll see, itll play clean. Distortion and long play with distortion is what hurts speakers. The said output of the amplifier is basically the manufacturer telling you what the amp is capable of making without distortion. The gain is just so can dial it in to the output of your headunit.
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Gain settings on 1200.4Evox
