Fi SSD Troubleshooting
11-04-2009, 04:05 PM
#1
Fi SSD Troubleshooting
Just finished an install today on a friends car (1994 Toyota Corolla) It consists of the following:
Alpine CDA 9884
2 10" Fi SSD (brand new, no options) in a 1.35 cubic foot sealed enclosure
BIG 3 (4 AWG)
Stock batt up front, Motomaster Elimintaor in the rear
4 AWG wiring throughout
Memphis 16-MC1500D @ 2 ohms
For some reason, after no more than 10 minutes of test tones (from 25hz to 40hz) at around 75% volume the amp goes in and out of protect mode. All we were trying to do was loosen the woofers up a bit. Car was started, and gains weren't even at full potential.
Fuse holder w/ voltage display states that the voltage was around the 11.8V range before it went into protect (cars heater was on, voltage taken at rear batt)
We then went out fro a drive, and was listening to a variety of music. To my ears, this system doesnt sound anywhere near what it should sound like. For a 1500rms amp, it seems as though its no more than 600rms to the ear. Now I do realize that the woofers are brand new and aren't fully broken in, as well as the enclosure being a prefab sealed one (for the time being)
Can anyone point me in the right direction as to why the amp is going in and outta protect mode?
Also, why is it not sounding near its full potential?
Alpine CDA 9884
2 10" Fi SSD (brand new, no options) in a 1.35 cubic foot sealed enclosure
BIG 3 (4 AWG)
Stock batt up front, Motomaster Elimintaor in the rear
4 AWG wiring throughout
Memphis 16-MC1500D @ 2 ohms
For some reason, after no more than 10 minutes of test tones (from 25hz to 40hz) at around 75% volume the amp goes in and out of protect mode. All we were trying to do was loosen the woofers up a bit. Car was started, and gains weren't even at full potential.
Fuse holder w/ voltage display states that the voltage was around the 11.8V range before it went into protect (cars heater was on, voltage taken at rear batt)
We then went out fro a drive, and was listening to a variety of music. To my ears, this system doesnt sound anywhere near what it should sound like. For a 1500rms amp, it seems as though its no more than 600rms to the ear. Now I do realize that the woofers are brand new and aren't fully broken in, as well as the enclosure being a prefab sealed one (for the time being)
Can anyone point me in the right direction as to why the amp is going in and outta protect mode?
Also, why is it not sounding near its full potential?
Last edited by jalat; 11-04-2009 at 04:10 PM.
11-04-2009, 05:13 PM
#5
11-04-2009, 05:24 PM
#6
i hated that memphis amp cuz it was way too sensitive to the load, that could be your problem. Try a bigger box.
does it do the same when you are reving the engine? try wiring amp's remote directly into some power source, see if it still protects.
OR
poor ground somewhere.
does it do the same when you are reving the engine? try wiring amp's remote directly into some power source, see if it still protects.
OR
poor ground somewhere.
11-04-2009, 05:44 PM
#7
i hated that memphis amp cuz it was way too sensitive to the load, that could be your problem. Try a bigger box.
does it do the same when you are reving the engine? try wiring amp's remote directly into some power source, see if it still protects.
OR
poor ground somewhere.
does it do the same when you are reving the engine? try wiring amp's remote directly into some power source, see if it still protects.
OR
poor ground somewhere.
I shall attach a pic of how the battery is wired in the rear.
The large 1/0awg wire in black is the rear batts ground (which is to the frame)
11-04-2009, 06:01 PM
#9
Correct me if I'm wrong, but is there a way you can bypass the 'protect' on these amps?
I mean I just dont understand why it heats up SO fast within such a short amount of time, which in turn leads to it going in and outta protect mode
