I now have a new-found respect for Jensen subs,
Originally posted by chevy-full-of-rockford:
^^^ brandon ...pantera rules man ,, right on
^^^ brandon ...pantera rules man ,, right on
Originally posted by chevy-full-of-rockford:
are those premier's any good i got a buddy....well i wouldn't say buddy...but anyway ..he swears up and down that they are awesome subs (he's got 2 12's)...i have been skeptical (opologise for the spelling if it is wrong) but i have never heard his stereo before..opinions..
are those premier's any good i got a buddy....well i wouldn't say buddy...but anyway ..he swears up and down that they are awesome subs (he's got 2 12's)...i have been skeptical (opologise for the spelling if it is wrong) but i have never heard his stereo before..opinions..
Originally posted by Haunz:
Any good amp can put out 20-30% more power then its rated for at nominal load.. this is to accomadate power compression.. (or lack there of)..
This dosent seem to be the case with this amp considering maximum current draw is listed at 120 and it has a tighly regulated supply... I think youd be lucky to top 900 even below 4ohms... (unless it can pull more then 120amps)
While I know the ZRs have an oversized PS I think 550wrms from a zr240 is also a pipe dream... I tested my buddies zr600 doing more like 700 into 4ohms and almost 850 into 3ohms..
When we were done testing me and my other buddy cooked hotdogs on it and took pictures for a laugh.... my friend was less then impressed.... [img]graemlins/laugh.gif[/img]
Any good amp can put out 20-30% more power then its rated for at nominal load.. this is to accomadate power compression.. (or lack there of)..
This dosent seem to be the case with this amp considering maximum current draw is listed at 120 and it has a tighly regulated supply... I think youd be lucky to top 900 even below 4ohms... (unless it can pull more then 120amps)
While I know the ZRs have an oversized PS I think 550wrms from a zr240 is also a pipe dream... I tested my buddies zr600 doing more like 700 into 4ohms and almost 850 into 3ohms..
When we were done testing me and my other buddy cooked hotdogs on it and took pictures for a laugh.... my friend was less then impressed.... [img]graemlins/laugh.gif[/img]
Define power compression Haunz, what is that exactly in all your infinate wisedom? If the 500si is nearly as under-rated as my old ZR240, then 1300 is about right. I was talking in a PM with probably the most knowledgable Kicker person, asides from the mods, and he agreed, it was in fact around 1300 or so. Top 900? whatever dude.
SO your buddy cooked hotdogs, good for him, where they cold, and still frozen inside? My old 240, didn't get all that hot before it shut down from thermal rating, and that was also at the test and tune, from doing a full 500 watts plus for over an hour. I assume the Zr600 is much the same. Can you do me a favor and just make this a "Haunz free" thread from here on? can you do that? I hate arguing.
Anyway, on the lighter side of things. The Jensen is now officially dead. I have to give it a good burial, it lived a good life while it lasted. I was just Given'er for about 10 minutes straight, as much power as I could put into it, for a whole ten minutes. I should have backed off, the coil was really heating after about 7 or so. But I got a little carried away. So the sealed box leaked a tad, so when it started to cough and wheeze, I pulled over, and pushed in the cone, smoke poured out of the leaks. There is no friction, but Im sure all the wires are cooked solid. Im sure what happened, is that the coil cooked SO hot, that the glue melted, and the VC wires came loose somewhere, then they became damaged by the subs movement. WOW That thing was stupidly loud. It just blew my Vifa 12" right out of the water. WAY louder, shook my car amazingly well. It was LOUD, let me tell you. I'd Love to see exactly how much I was putting into it when for that 10 minute period. [img]graemlins/headbang.gif[/img]
Guest
Posts: n/a
in the test that was done was output distortion recorded or was this just done with a meter and a test tone, if so the test isnt really indicative or the true clean power, say less than 3-5%. many amp will put out tons of sickening power when ran into clipping, btw dognut i think the old zr240 and such are good amps, used to sell them and was always happy with the sound and output
^ Thanks. yeah, they were nuts. I wish I didn't sell my Zr240, but I had no choice, funds were lacking, well here are a whack load of pics that I just took today.
Here is the pair of Vifa's, the one to the right I just bought today, $200, sub AND box, now my stereo is Sh*t kicking loud. Im stuffing the full 1200 into the two, its NUTTY, I LOVE it
http://www.geocities.com/ysr80cc/twin_Vifas.jpg
Heres a pic of the power beast, not bad for $300, damn good amp, the Class A/B power is clean as whistle. If I get a bigger sub amp, this is definately going to power my fronts
http://www.geocities.com/ysr80cc/500si_mine.jpg
[ March 10, 2005, 12:10 AM: Message edited by: SPL donut ... ]
Here is the pair of Vifa's, the one to the right I just bought today, $200, sub AND box, now my stereo is Sh*t kicking loud. Im stuffing the full 1200 into the two, its NUTTY, I LOVE it
http://www.geocities.com/ysr80cc/twin_Vifas.jpg
Heres a pic of the power beast, not bad for $300, damn good amp, the Class A/B power is clean as whistle. If I get a bigger sub amp, this is definately going to power my fronts
http://www.geocities.com/ysr80cc/500si_mine.jpg
[ March 10, 2005, 12:10 AM: Message edited by: SPL donut ... ]
SPL you shutup... seriously... for someone who hasen't even touched a clamp meter and doesnt know what power compression is you sure yap alot...
did you even read defro's response? FYI you didnt answer his question...
Like I said I tested a zr600 using two true rms meters and a non inductive dummy load.... maybe if I loaded it down past 3ohm hot and fed it more then 13volts I would have got a higher #...
Edit: I would not doubt loud brown kicker colts test results.. but Iam sure he loaded it down to the verge of short protection and did a very short burp.....
hey spl.. I have an idea... why dont you load that amp down to 1ohm so you can be sure you are getting all the power you can clipped or not... then I can laugh at your monkey *** when it blows up on you this summer...
Do you know what a failure mode is or is that something Id have to explain as well... ?
[img]graemlins/laugh.gif[/img]
[ March 10, 2005, 09:17 AM: Message edited by: Haunz ]
did you even read defro's response? FYI you didnt answer his question...
Like I said I tested a zr600 using two true rms meters and a non inductive dummy load.... maybe if I loaded it down past 3ohm hot and fed it more then 13volts I would have got a higher #...
Edit: I would not doubt loud brown kicker colts test results.. but Iam sure he loaded it down to the verge of short protection and did a very short burp.....
hey spl.. I have an idea... why dont you load that amp down to 1ohm so you can be sure you are getting all the power you can clipped or not... then I can laugh at your monkey *** when it blows up on you this summer...
Do you know what a failure mode is or is that something Id have to explain as well... ?
[img]graemlins/laugh.gif[/img]
[ March 10, 2005, 09:17 AM: Message edited by: Haunz ]
Guest
Posts: n/a
dognut, you didnt answer the question, how was the output level attained? what impedence was the amp at? was it a resistive load? was it done with an o-scope? my point is, like haunz said anyone can clip the living **** out of something to get their desired results . im not doubting in any way the output claims im just wondering how you came to it.
Haunz, the amp cant do 1 ohm, why the hell would I even try that, knowing that, no sh*t the amp would fry, DUH! Common sense really! the ZR was doing it at 2 ohms.
Really Funny, of how you (out of all people) said I yap alot for someone that knows little, is it just me or is that called a hypocrite? When did I yap a lot about offering advise? did I? only on stuff that I actually know about, since I have at least some actual first hand experience in that area. Sound familier? I didn't think so.
I can't remember the last time that I offered advise, besides perhaps on a box design, but thats only because I ran the Subs T/S parimeters on a box building software programs first (I have those on my computer), then modeled the best response curves and other things on there first. THEN I listed them, after I was happy, only to be helpful that way.
how does a person test an amp having clipped signal,? besides running it on a oscilliscope?
[ March 10, 2005, 11:52 AM: Message edited by: SPL donut ... ]
Really Funny, of how you (out of all people) said I yap alot for someone that knows little, is it just me or is that called a hypocrite? When did I yap a lot about offering advise? did I? only on stuff that I actually know about, since I have at least some actual first hand experience in that area. Sound familier? I didn't think so.
I can't remember the last time that I offered advise, besides perhaps on a box design, but thats only because I ran the Subs T/S parimeters on a box building software programs first (I have those on my computer), then modeled the best response curves and other things on there first. THEN I listed them, after I was happy, only to be helpful that way.how does a person test an amp having clipped signal,? besides running it on a oscilliscope?
[ March 10, 2005, 11:52 AM: Message edited by: SPL donut ... ]
If the amp is doing its maximum output already dropping the load further will only reinforce saturation... common sense really..
If the amp was doing 550 at 2ohms the load was probably under 1.5ohms before impedance rise and we dont even know how clipped the signal was... Are you running your amp like that ?
(well, the clipping part would not surprise me)
Since I doubt very much that you have the ability to measure power output it would be a waste of time explaining how to measure THD+N or how to detect for clipping... (which is quite easy to do I might add)
Since you are so smart Id think you could figure it out on your own anyway [img]graemlins/thumb.gif[/img]
[ March 10, 2005, 01:05 PM: Message edited by: Haunz ]
If the amp was doing 550 at 2ohms the load was probably under 1.5ohms before impedance rise and we dont even know how clipped the signal was... Are you running your amp like that ?
(well, the clipping part would not surprise me)
Since I doubt very much that you have the ability to measure power output it would be a waste of time explaining how to measure THD+N or how to detect for clipping... (which is quite easy to do I might add)
Since you are so smart Id think you could figure it out on your own anyway [img]graemlins/thumb.gif[/img]
[ March 10, 2005, 01:05 PM: Message edited by: Haunz ]


