Gains set to about 75% doesn't tell us the gains have been set correctly.The sub amp is the sub section of the ZX700.5
The gains were set to about 75% - I knew I would not be overpowering that sub, and in tuning with with front stage, this is what worked best. 880PRS sub channel set to 0db or +1-2db depending on the music program.
I will test my charging system, but its strange that it only happens when the amp gets hot. And its stranger still that the amp gets hot running 8 and 4 ohm loads.
Kicker has provided an RA so its going back, I will fight them for a new one, but who knows what they will tell me...
Thanks again for all of your input...I will keep everyone updated.
IMO this is why this thread confuses people. Maybe I don't understand this stuff yet but given the choice between an 8 ohm driver and the same one in 4 ohm, I would pick the 4ohm. The sensitivity increase in the 8 ohm driver is usually .5db not 3db, so all you are really doing is halving the power when you choose the 8 ohm route.I said loudness and efficiency (which is sensitivity, ie. how efficiently the driver converts electrical power into acoustic power).
I think you are confused between the sensitivity of the driver compared to how loud it can get off of an amp driving a 4 ohm load at a certain wattage and then halving that output when it bumps up to 8 ohm.
In this case, the speakers are as sensitive as each other assuming the speakers are like the ones in the posts above. The 8 ohm one will however cause the amp to put out half(ish) the rated power of 4 ohms causing the 8 ohm driver to be 3dB less loud even though it has the same efficiency/sensitivity.
Depends... Does your powerpack do 45W @ 8 ohm and 45W @ 4 ohm?
It's 4 channel, [email protected] not bridgeable. There is only a high/low gain switch. So I'm guessing that it will not supply much power to the 8ohms speakers and the 4 ohms would be the better option.Depends... Does your powerpack do 45W @ 8 ohm and 45W @ 4 ohm?
The 4 ohm model would be better.
So based on that, for the 8 ohm version to be of any benefit, it would need to have a sensitivity of at least 93dB or higher for your situation.If both are rated 1w/1m you need to be 3db higher sensitivity to get the same output with 8 ohm vs 4 ohm
Use the formula's given on the first page (first post or post #1). That should give you the answer or atleast a better idea.So, if I was to have a JL AUDIO 300/2 (150x2 @ 1.5-4 OHM's) and a pair of Peerless XLS 8" (10MM XMax)with a DB of nearly 91DB and a pair of HAT 6 1/2 Clarus (12MM XMax) with a sensativity of 90.4DB, the Peerless should have more output due to it's cone area, right? What if the Peerless was a 6.5" just like the Clarus, would the Peerless still have equal output on 75 W since it's 8 OHM's?
Yes..it's ok.This thread helped me make a decision to get a pro audio driver for a midrange. I got in on the pre-purchase of the Melodic Acoustic Intimid8r 8" midwoofer and wanted something that would be a similar sensitivity as it. I ordered a pair of Faital Pro 3Fe22 8 ohm drivers. Still not sure what I'm going to do for a tweeter.
My question is will I be OK running these on 2 channels of my PDX-F4? It was specd at 121 watts per channel @ 4ohms. Do I have a chance of running them on the F4 or is it just gonna be too much even if the gain is down?