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Car Audio Equipment
Amplifiers
Gain output matching on two amps x1 4channel x1 mono
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<blockquote data-quote="Jay Jay" data-source="post: 8684533" data-attributes="member: 678034"><p>Hi all,</p><p></p><p>I’ve been struggling to find the right balance in my system and value experienced input, suggestions or even a mathematical solution - if there is one <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p>Ok here is a quick and dirty, will expand into loads of detail if needed:</p><p></p><p>4 channel amp (75 watts rms) driving front and rear speakers at 4ohm</p><p>1 channel amp (600 watts rms) driving sub at 2ohm</p><p></p><p>I have set my reference volume level at 20 in the car, (all distortion checks done, oscilloscope etc) the head unit volume goes all the way to 35 without distortion. I have then dialled in both amps to peak voltage 17.4 and 34.6 respectively At my reference volume 20. I found that the 4 channel is so loud I can’t really get past volume 15. So I backed of the gain on the 4 channel, but then felt the front / rear to weak at 20. At 20 the bass is humming, but I am struggling to find a good match between to the two amps. I do have a bass controller, which again is set all the way up at my reference volume 20, so I can back off if needed (but rarely do)</p><p></p><p>My question is this: is there a set formula for working out the above, or just good old school and do it by ear with a few days spare back and forth in the boot lol.</p><p></p><p>Interested to hear what you guys have to say?</p></blockquote><p></p>
[QUOTE="Jay Jay, post: 8684533, member: 678034"] Hi all, I’ve been struggling to find the right balance in my system and value experienced input, suggestions or even a mathematical solution - if there is one ;) Ok here is a quick and dirty, will expand into loads of detail if needed: 4 channel amp (75 watts rms) driving front and rear speakers at 4ohm 1 channel amp (600 watts rms) driving sub at 2ohm I have set my reference volume level at 20 in the car, (all distortion checks done, oscilloscope etc) the head unit volume goes all the way to 35 without distortion. I have then dialled in both amps to peak voltage 17.4 and 34.6 respectively At my reference volume 20. I found that the 4 channel is so loud I can’t really get past volume 15. So I backed of the gain on the 4 channel, but then felt the front / rear to weak at 20. At 20 the bass is humming, but I am struggling to find a good match between to the two amps. I do have a bass controller, which again is set all the way up at my reference volume 20, so I can back off if needed (but rarely do) My question is this: is there a set formula for working out the above, or just good old school and do it by ear with a few days spare back and forth in the boot lol. Interested to hear what you guys have to say? [/QUOTE]
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Car Audio Equipment
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Gain output matching on two amps x1 4channel x1 mono
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