basscube5
Junior Member
Hey Guys!
I bought a VFL 4480 recently to run two XFL 10s. I'm not in a position right now to start building a box and installing everything but my curiosities got the best of me today so I did a little test. I hooked up the 4480 temporarily and ran a clean 40hz test tone through it to see what kind of output voltage I could get while keeping an eye on things with an Oscope. I have to say I'm a little disappointed with what I came up with... With a battery voltage of 13.9V the most I could get (clean) at the speaker output is 34V. This translates to roughly 1156 friggin watts at 1ohm, nowhere near what this amp is hyped at. I used a fluke 114 to take the voltage measurement, I also checked it with my clamp meter (does rms voltage as well) both came up with the same number.
Yes, I realize I don't post here much, but I'm no noob to this sort of stuff. Figured I'd give the AB stuff a shot, but so far I dunno. Thoughts? Dud maybe? these things don't like 40HZ tones maybe? I saw a thread here a while back where a fellow claimed 50v at the speaker outputs (no load). I did get this from ebay, where I'm in canada I'm sol as far as warranty goes regardless so I went the cheapest route possible.
I bought a VFL 4480 recently to run two XFL 10s. I'm not in a position right now to start building a box and installing everything but my curiosities got the best of me today so I did a little test. I hooked up the 4480 temporarily and ran a clean 40hz test tone through it to see what kind of output voltage I could get while keeping an eye on things with an Oscope. I have to say I'm a little disappointed with what I came up with... With a battery voltage of 13.9V the most I could get (clean) at the speaker output is 34V. This translates to roughly 1156 friggin watts at 1ohm, nowhere near what this amp is hyped at. I used a fluke 114 to take the voltage measurement, I also checked it with my clamp meter (does rms voltage as well) both came up with the same number.
Yes, I realize I don't post here much, but I'm no noob to this sort of stuff. Figured I'd give the AB stuff a shot, but so far I dunno. Thoughts? Dud maybe? these things don't like 40HZ tones maybe? I saw a thread here a while back where a fellow claimed 50v at the speaker outputs (no load). I did get this from ebay, where I'm in canada I'm sol as far as warranty goes regardless so I went the cheapest route possible.