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Car Audio Equipment
Subwoofers
Advice on Amp and Sub Combo (SSA + Kenwood?)
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<blockquote data-quote="zako" data-source="post: 7835857" data-attributes="member: 629735"><p>120.9w should be able to play louder than JL w3. Just look at xmax, 17mm vs 12mm. My observation with Infinity 120.9w sub is that it needs good power to play loud, more power than its 350watt rating. The subs were designed to play well in a reasonably sized sealed box and hit lows well, but that usually requires more power. The other day I modeled it on WinISD, which shows you need to feed it like 500-600watts just to reach its potential xmax excursion. I run about 400-450watts to mine, verified with DMM. You have a 900watt RMS amplifier, but did you set gains with DMM? The gain setting could be set right now for them to see less power. But yes, I would say these subwoofers err on the side of sound quality.</p><p></p><p>Also, how do you have them wired? They have a switch to flip between 2ohm and 4ohm impedance. In your case, both should be set at 4ohms, and then wired in parallel to a mono block amplifier's channel.</p></blockquote><p></p>
[QUOTE="zako, post: 7835857, member: 629735"] 120.9w should be able to play louder than JL w3. Just look at xmax, 17mm vs 12mm. My observation with Infinity 120.9w sub is that it needs good power to play loud, more power than its 350watt rating. The subs were designed to play well in a reasonably sized sealed box and hit lows well, but that usually requires more power. The other day I modeled it on WinISD, which shows you need to feed it like 500-600watts just to reach its potential xmax excursion. I run about 400-450watts to mine, verified with DMM. You have a 900watt RMS amplifier, but did you set gains with DMM? The gain setting could be set right now for them to see less power. But yes, I would say these subwoofers err on the side of sound quality. Also, how do you have them wired? They have a switch to flip between 2ohm and 4ohm impedance. In your case, both should be set at 4ohms, and then wired in parallel to a mono block amplifier's channel. [/QUOTE]
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Advice on Amp and Sub Combo (SSA + Kenwood?)
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