CD7000 Initial impressions
03-25-2006, 08:20 PM
#1
CD7000 Initial impressions
Well guys my CD7000 came today! Thanks again Don for the awesome HU!!!
Well once I got this thing installed and tuned alittle (still need to play around with it quite a bit) I have to say that this thing sounds damn good! It has a much more rich and warmer sound than my 7998 did. This thing really brought to life my front stage, with the 7998 and other Alpine HU's that I have owned I felt that I was always lacking in the midrange. Well that is not a problem anymore! The sound is much more full bodied and well rounded. My subs are hitting much cleaner they used to sound muffled and lifeless before, now they really give you that kick in the chest like they should.
The only thing that I really dont like with the unit is all the fancy bacground **** it gets really anoying! But as of now thats my only real dislike with it. I will post a better review once it has had some time to break in.
I plan with in the next few weeks to go active on my front stage so hopefully it will make my eclipse Experience even more enjoyable!
Well once I got this thing installed and tuned alittle (still need to play around with it quite a bit) I have to say that this thing sounds damn good! It has a much more rich and warmer sound than my 7998 did. This thing really brought to life my front stage, with the 7998 and other Alpine HU's that I have owned I felt that I was always lacking in the midrange. Well that is not a problem anymore! The sound is much more full bodied and well rounded. My subs are hitting much cleaner they used to sound muffled and lifeless before, now they really give you that kick in the chest like they should.
The only thing that I really dont like with the unit is all the fancy bacground **** it gets really anoying! But as of now thats my only real dislike with it. I will post a better review once it has had some time to break in.
I plan with in the next few weeks to go active on my front stage so hopefully it will make my eclipse Experience even more enjoyable!
03-25-2006, 10:57 PM
#9
I've got some questions though...
It does sound better than the 9835 did, and I got the changer installed today, but I've got a little problem, er..a moderate problem. There is a loud hissing in the speakers (most noticeable in tweets). It gets significantly quieter when I turn the sub amp off (found this out because I put a switch on the remote lead for this amp so I could turn it off when playing the radio, as I found out the amp was the majority of my problem with the antenna reception being so sh*tty).
So anyway, everything else is hooked up correctly and I didn't change any connections at either of the amps, so what's with the hiss? (oh yeah, it wasn't there with the Alpine)
Also which steering wheel wires are supposed to be connected to each wire on the HU? I guessed at it and the only control working the right way is the mode button, so obviously something's not right.
Other than that, the only complaints are, like skier said, the display gets cluttered and hard to read sometimes. Oh and the 5-way control is weird.
It does sound better than the 9835 did, and I got the changer installed today, but I've got a little problem, er..a moderate problem. There is a loud hissing in the speakers (most noticeable in tweets). It gets significantly quieter when I turn the sub amp off (found this out because I put a switch on the remote lead for this amp so I could turn it off when playing the radio, as I found out the amp was the majority of my problem with the antenna reception being so sh*tty).
So anyway, everything else is hooked up correctly and I didn't change any connections at either of the amps, so what's with the hiss? (oh yeah, it wasn't there with the Alpine)
Also which steering wheel wires are supposed to be connected to each wire on the HU? I guessed at it and the only control working the right way is the mode button, so obviously something's not right.
Other than that, the only complaints are, like skier said, the display gets cluttered and hard to read sometimes. Oh and the 5-way control is weird.
03-26-2006, 06:39 AM
#12
I tend to get a bit irritable
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Originally Posted by TheBigDu
I've got some questions though...
It does sound better than the 9835 did, and I got the changer installed today, but I've got a little problem, er..a moderate problem. There is a loud hissing in the speakers (most noticeable in tweets). It gets significantly quieter when I turn the sub amp off (found this out because I put a switch on the remote lead for this amp so I could turn it off when playing the radio, as I found out the amp was the majority of my problem with the antenna reception being so sh*tty).
So anyway, everything else is hooked up correctly and I didn't change any connections at either of the amps, so what's with the hiss? (oh yeah, it wasn't there with the Alpine)
Also which steering wheel wires are supposed to be connected to each wire on the HU? I guessed at it and the only control working the right way is the mode button, so obviously something's not right.
Other than that, the only complaints are, like skier said, the display gets cluttered and hard to read sometimes. Oh and the 5-way control is weird.
It does sound better than the 9835 did, and I got the changer installed today, but I've got a little problem, er..a moderate problem. There is a loud hissing in the speakers (most noticeable in tweets). It gets significantly quieter when I turn the sub amp off (found this out because I put a switch on the remote lead for this amp so I could turn it off when playing the radio, as I found out the amp was the majority of my problem with the antenna reception being so sh*tty).
So anyway, everything else is hooked up correctly and I didn't change any connections at either of the amps, so what's with the hiss? (oh yeah, it wasn't there with the Alpine)
Also which steering wheel wires are supposed to be connected to each wire on the HU? I guessed at it and the only control working the right way is the mode button, so obviously something's not right.
Other than that, the only complaints are, like skier said, the display gets cluttered and hard to read sometimes. Oh and the 5-way control is weird.
03-26-2006, 07:51 AM
#17
I tend to get a bit irritable
iTrader: (151)
Join Date: Feb 2002
Location: Central Jersey
Posts: 17,671
Originally Posted by 1996blackmax
With my unit you had to download some software into the unit I thought. Not sure about yours though.
Thats correct as far as I know. I didnt do it due to being lazy and left my SIR-ECL connected.
03-26-2006, 08:00 AM
#18
Oh so it is just the gains, huh?
Aso, I have the brown eclipse wire connected to the red wire and the brown/black eclipse wire connected to the blue/yellow wire. I don't think I have a green/black, but I do have a red/black, which is safed off because the old SWI-X didn't require it.
Thanks Don!
Aso, I have the brown eclipse wire connected to the red wire and the brown/black eclipse wire connected to the blue/yellow wire. I don't think I have a green/black, but I do have a red/black, which is safed off because the old SWI-X didn't require it.
Thanks Don!
03-26-2006, 11:01 AM
#19
Well I tried playing with the gains for a while, lowering them all the way and so forth, the hissing just won't go away completely, and it's awful with the sub amp turned on. I'm gonna have to give you a call to try to figure this out, Don. When is good?
Thanks.
Thanks.
03-26-2006, 11:46 AM
#21
Originally Posted by slickrick
is it the rca's?
I was playing around some more outside. If I turn the sub amp off and turn the gains all the way down for the tweeters and woofers on the other amp, the hiss is very quiet, but then of course I have to turn the volume up to a pretty high level to compensate (which I can deal with). But then when I turn the sub amp on, there is a ton of distortion in the components everytime the sub hits. I can't tell if there's distortion in the subs also.
Like I said, I didn't change anything about how the amps and speakers are wired. The only thing that really changed is the 24+ batt source and ground for the HU (and of course the HU itself).
I'm leaving to drive back to school now, and unfortunately I have to leave the subs off, because the distortion in the components is awful.
Any input anybody?
03-26-2006, 03:42 PM
#23
Originally Posted by Pearl96Max
24+ batt source??? You got a 24V system? 
where did the ground change to?
where did the ground change to?
24 HOUR...you know what I meant...hahaI was so crazy about trying to get rid of the alt. whine I used to have before upgrading the amp power wire a few weeks ago that I tried everything. One of those things was to ground the HU back in the trunk with the amplifiers. Also, I had a direct 12+ source from the batt (as you saw).
Now, the HU is grounded behind the HU/HVAC controls on a stud towards the passenger side of the dash (on a dash support brace), and the 12+ power is coming from the metra harness, just like you said. I am also feeding the changer off this power source, though it's obviously grounded in the trunk.
It's upsetting to not be able to use my subs...
03-27-2006, 05:35 AM
#25
It almost sounds like the amp ground needs to me changed to a different spot. Have you tried that? Just a suggestion. I would consider trying the RCA cable from the component amp to the sub amp to see if it causes the hissing to stop, if it does, then swap the subs rca's with something else. Also if you unplug the RCA's completely from the sub and turn the sub on does the hissing persist?
Just a few suggestions for you
Just a few suggestions for you
03-27-2006, 07:30 AM
#26
Originally Posted by nismos14
It almost sounds like the amp ground needs to me changed to a different spot. Have you tried that? Just a suggestion. I would consider trying the RCA cable from the component amp to the sub amp to see if it causes the hissing to stop, if it does, then swap the subs rca's with something else. Also if you unplug the RCA's completely from the sub and turn the sub on does the hissing persist?
Just a few suggestions for you
Just a few suggestions for you
The ground spot for the amps didn't change, so I know that's not the issue. I haven't tried connecting the RCAs from the component amp to the sub amp yet. I will definitely try to unplug the RCAs from the sub amp like you said; I'm surprised I didn't think of this...
Thanks again!
03-27-2006, 08:53 AM
#28
Originally Posted by nismos14
Lol also since you're getting a higher output from the HU it could raise issues with noise in the ground that you did not have prior to this from the old unit. Just a thought.
Anyway, I tried disconnecting the RCAs from the sub amp and turning it on and the hissing/distortion wasn't present. Then I reconnected one RCA channel and the hissing was a little louder, but not awful. Then I reconnected the second RCA channel and the hissing was very loud again. I tried both channels and found it doesn't matter which one is connected if it's only one; the hissing will be the same.
As for the distortion, I couldn't really notice any with just one RCA connected, but I didn't listen for too long, so there is probably still some there.
My sub RCAs are running fairly close (within a few inches) to the pos.power for one of the amps for a length of about 1-2 feet. Like I said, this hasn't changed and I didn't notice any problem with the Alpine, so here is what I'm thinking: the other day I also did a partial Big 3 upgrade, I changed the batt to chassis and chassis to engine block from the stock 4 awg or whatever to some extra 1/0 i had. I noticed after doing this that when the subs do it, they seem to be much more powerful (but of course they distort the speakers as well). So what I'm thinking is that upgrading that wire gave the subs much more power than they had before the upgrade, so there could have been a noise issue before, but like you said nismo, I might not have noticed it. If this is the case, then the fix is somewhat easy in that I just have to move the RCAs away from the power wire. And I guess the hissing in the components could also be a result of those RCAs being too close to that power wire?
What do you guys think? Thanks!
-Brian
03-27-2006, 09:30 AM
#31
Well try hooking up the RCA from the other amp to the sub amp first. Then try moving it, then take it to Don if all else fails
Also the Alpines preouts are probably Xohms at 500 - 1000hz where as the Eclipse is 5v at 100hz, this makes for much stronger of a signal.
Also the Alpines preouts are probably Xohms at 500 - 1000hz where as the Eclipse is 5v at 100hz, this makes for much stronger of a signal.
03-27-2006, 09:52 AM
#34
I tend to get a bit irritable
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Originally Posted by nismos14
Also the Alpines preouts are probably Xohms at 500 - 1000hz where as the Eclipse is 5v at 100hz, this makes for much stronger of a signal.
what the hell did you just say???
03-27-2006, 10:01 AM
#36
Originally Posted by Pearl96Max
what the hell did you just say???
Originally Posted by slickrick
What school in PA?
Originally Posted by slickrick
eclipse=55 ohms correct?
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