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ti 500.4 bridged question "true watts"

Posted: Sun Jan 29, 2012 1:46 pm
by thedeal7235
Hey guys, I hate to ask, "what seems like a dumb question", but i must- Ive gotten rid of all of my "d" mono sub amps- I really enjoy the sound i get from bridging my rear ti 500.4 to my 2 rsdc10" 2 ohm subs- when i put a 60 hz sine wave test tone at 0 db in, and measure before clipping with my dmm in ac volts, Im reading 58.9 volts. I then proceed to measure my volts at the amp, the real average has been about 13.8 volts dc, -is it really that simple to multiply the volts to get my "true" watts?????? I know the specs read 250 bridged @ 4ohms on that amp, and yes it handles the 2 ohm bridged no problem(as was rated 1ohm stereo) so what are my true watts? I know in part some of the reason it sounds sooo good/hits hard is b/c my box is 2 seperate enclosures& 2 seperate vents-------im just wondering, btw, when i did this with a zx500, i had even higher ac volts reading, :?: :?: :?: :?: :?: :?:

Re: ti 500.4 bridged question "true watts"

Posted: Sun Jan 29, 2012 3:13 pm
by stipud
Hard to read, but if you set your gains to 58.9 volts, they are way too high. You should be around 30, assuming a 4 ohm load. On 2 ohms I'd even run it lower, at 25-30 or so.

Rear channels rated 250@4 ohms bridged : sqrt(250*4) = 31.6v

Re: ti 500.4 bridged question "true watts"

Posted: Sun Jan 29, 2012 3:40 pm
by thedeal7235
thanx man, i have 8 volts from sld44(2nd set of rca output to the rear of the amp)set at 8volts going into the amp(measured in ac volts with a dmm), and the gain, and i never use bass boost, set to zero. Thats why im sitting here scratchin my head :doh: , as to how in the world is it actually reading 58 volts ac on the speaker outputs??????!!!!!! ive been letting it run at 60percent volume for a few hours now, and yes the amp is warm to the touch, but hasnt gone into protect, and it sounds/hits good-via the sqrt method, @ 2ohms, it sould only be 22.36 v ac------

Re: ti 500.4 bridged question "true watts"

Posted: Sun Jan 29, 2012 6:15 pm
by ttocs
58V p-p or 58Vac peak? 58Vac p-p is about the same as 30Vac peak voltage.