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I didnt take it personally at all. And no I cant show proof of the damage my deck caused because I have already warrantied everything. Plus it happened like 3 years ago. here was the situation... eclipse 8442, jbl BP300.1, an alpine type S 12DVC, and a sealed box built to spec. everything was set properly including gains. basically I went through 3 different subs with the exact same setup. nothing was wrong at all. Come to find out that the JBL BP amps cant handle the 8V too well and surged too much power to the sub. sub ended up blowing. I never even had a chance to really pus the sub hard.

Ill see if I can hit my deck up with a DMM tonight, if not it will be tomorrow. I will post pics of my results in a new thread.
 

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bobditts said:
if i knew how to measure I might just do that. All I know is that my eclipse has damaged a few products because of its high output voltage. I wouldnt want to spend the $800 or whatever the price is on this thing just for my eclipse to blow it up.

I used my Eclipse 8053 with an 10yr old amplifier that had a maximum input voltage of 1.5V with absolutely no problems.
 

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I don't trust any software to auto-tune... as in set it and forget it. I just don't think there's anything sophisticated enough out there yet that could do a good job.

However, the nice thing it seems with the JBL unit is that rather than adjusting bands directly, you only need to change the target response and the system will do the rest... as well as the spatial averaging and other fancy stuff the dsp will calculate. Whether or not it actually works I think we will have to wait and see... but given the resources that JBL has behind them I don't see why it wouldn't. I was a tiny bit dissapointed that they didin't incorporate room correction into the unit. If anything needed it, it's definitely a car.
 

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npdang said:
I don't trust any software to auto-tune... as in set it and forget it. I just don't think there's anything sophisticated enough out there yet that could do a good job.

However, the nice thing it seems with the JBL unit is that rather than adjusting bands directly, you only need to change the target response and the system will do the rest... as well as the spatial averaging and other fancy stuff the dsp will calculate. Whether or not it actually works I think we will have to wait and see... but given the resources that JBL has behind them I don't see why it wouldn't. I was a tiny bit dissapointed that they didin't incorporate room correction into the unit. If anything needed it, it's definitely a car.
agreed...the processor looks very promising. room correction would have been great, although i don't know how close any manufacturer is to incorporating a solid version of it into a car audio processor. thus far, looks like alpine is first up with the audyssey multeq technology. whether it is an effective solution or not remains to be seen.
 

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Hey, I had a setup that would correct like 10 years ago. But it cost like 10 times as much and I never really was able to get the one I got to work.

Considering how many have poorly tuned systems, I would guess that this thing will do more good than harm.

Juan
 

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We tested many HUs at Tru's facility back then.
Alpine's 4V output? Eclipse's 8V output? BS. Especially with music like B-Squad said.
If Eclipse puts out 8V, then it will shut down all Arc CXL/XXK amps since they are limited to 2.5V or 4V outputs. (can't remember, but I think it's 2.5V)
Even at the shop, I measured my 9813, 7990 (f1), etc with music, at full tilt, they barely hit .5 V. Believe it or not.
 

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dual700 said:
We tested many HUs at Tru's facility back then.
Alpine's 4V output? Eclipse's 8V output? BS. Especially with music like B-Squad said.
If Eclipse puts out 8V, then it will shut down all Arc CXL/XXK amps since they are limited to 2.5V or 4V outputs. (can't remember, but I think it's 2.5V)
Even at the shop, I measured my 9813, 7990 (f1), etc with music, at full tilt, they barely hit .5 V. Believe it or not.
True, true. Can't remember how many times I've had to bring up the XXK line as an example. They are all 2.5v max...except for the mono which is like 2.85v.

With my 8053 and BLA combo, I got a pretty consistant 2v at 80/80 with music. With 0dB tones, I did see the full 10v at 80/80. What I noticed was that the output really didn't start cranking until about the 75/80 range. To say the output is too strong and will damage electrical equipment is friggen silly. :rolleyes:

I was just playing with my P9 the other day. 1k tone (-3dB) at about 5 clicks from full volume. Audison SRx4 bridged with gain all the way down (input sensitivity is 5.5v). Care to guess the AC voltage output on the speaker leads???















9v :(
 

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I could be totally off base, but I've noticed different HU's giving cleaner or dirtier signals based on Quoted Preamp volt. I do believe that this is basic marketing smoke, but there are differences. Take a gander at the preamp output impedance that's what really makes the difference in sound. Compare pioneer's 100 ohm to Eclipse's 55 ohm.
 

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t3sn4f2 said:
Does anyone know if this unit will do something about OEM head units or after market ones that have volume dependent equalization or some other sound processing. Other than tell you to leave the main volume in one setting and use theres as the master volume.
It processes the input signal and basically will restore it to a flat signal. I believe the CleanSweep and 3Sixty.2 do the same as well. Therefore, that bass attentuation circuit that lowers the bass at higher volume levels in many factory heads, or any other equalization for that matter, is effectively negated.
 

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Preacher said:
I could be totally off base, but I've noticed different HU's giving cleaner or dirtier signals based on Quoted Preamp volt. I do believe that this is basic marketing smoke, but there are differences. Take a gander at the preamp output impedance that's what really makes the difference in sound. Compare pioneer's 100 ohm to Eclipse's 55 ohm.
Totally agree. Eclipse figured it out way back with the 8061. High voltage + low output impedance + balanced output. Funny how Alpine went the other direction. Don't their units have like a 10,000 ohm output impedance or something crazy like that??
 

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Tirefryr said:
It processes the input signal and basically will restore it to a flat signal. I believe the CleanSweep and 3Sixty.2 do the same as well. Therefore, that bass attentuation circuit that lowers the bass at higher volume levels in many factory heads, or any other equalization for that matter, is effectively negated.
My original question was for someone that wants to use the factory volume instead of the MS-8 master volume. When you set these devices up they tell you to pick a volume on the OEM head unit and leave it around that point before and after you do the optimization. So that it uses that point as its reference, but then when you raise the volume on the OEM during normal use , it will alter the optimized response since the OEM response will be altered as well thanks to the volume dependent EQ curve.
 

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Discussion Starter #35
Andy answered that question over on the other thread. In short, Yes you can use the volume on the stock radio. :)

This unit isn't just like the JL Cleansweep or the RF 3Sixty.2.
 

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IF it is processing the factory filtering out at one volume, it will do it at all volumes. IT was stated it can be controlled from either volume source and givien it's processing capabilities, I don't see this being a problem. If it were, it would have been stated that it MUST be controlled by the unit's programming module itself.
 

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Tirefryr said:
IF it is processing the factory filtering out at one volume, it will do it at all volumes. IT was stated it can be controlled from either volume source and givien it's processing capabilities, I don't see this being a problem. If it were, it would have been stated that it MUST be controlled by the unit's programming module itself.

http://mobile.jlaudio.com/pdfs/11196.pdf

In page 8 of the JL Audio Clean Sweep manual, in the section of "Using the OEM volume control instead of the clean sweep", it states you can use it like that too but there are differances in the response. I don't see how any of these processors can actively adjust according to the gain of the OEM headunit since music is dynamic and would in itself fool the processor into thinking you were raising the volume (thus changing its response) when all that might be happening was a normal peak in the music. That is why they tell you "if you are worried about these comprimises" to use the units master volume.

My question still stands if anyone that knows if they over came this somehow other than telling you to deal with it.
 
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