BC guys get building...what are your winter plans/upgrades?
that's what i was thinking too. his boxes are sick but he bigs up JBL amps.
thumper were these class A/B amps you compared with your JBL? I dont see how a frequency can make one amp THAT much better than another unless the amps you are testing against are either super inefficient or you are not wiring them at their optimal loads.
JBL are good amps no doubt, but, i mean, they are not magical
thumper were these class A/B amps you compared with your JBL? I dont see how a frequency can make one amp THAT much better than another unless the amps you are testing against are either super inefficient or you are not wiring them at their optimal loads.
JBL are good amps no doubt, but, i mean, they are not magical
very valid point....
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It is entirely possible that the other amps tested didn't like the load down that low. Maybe impedance or phase angle or something. Back in the day some A/B amps really could keep it together better down low than others. With ClassD this should not be so much the case though.
Although from what I have seen, the JBLs are picky on what load they are fed too.
Although from what I have seen, the JBLs are picky on what load they are fed too.
I'v been doing this a LONG time..this amp eats and craps out alot of the
top end home and commercial stuff I have played with
all comparisons were done with the same set up with a solid 14.5 volt power supply
..the JBL was wired at 4ohm and the other amps were wired 1ohm
..some of the other amps got better TL numbers up at higher frequency..
all tests with the mic on dash...doors closed and engine on
for example the Zapco C2K 4KW and the Adassa Warlord....the RF T4000 did well to
the Soundstream XXX 6500 couldn't touch it on any freq...but none of them could touch
the crown down at the bottom....
the Crown looses absolutley no control or power and holds rock solid composure right down to 10hz
top end home and commercial stuff I have played with
all comparisons were done with the same set up with a solid 14.5 volt power supply
..the JBL was wired at 4ohm and the other amps were wired 1ohm
..some of the other amps got better TL numbers up at higher frequency..
all tests with the mic on dash...doors closed and engine on
for example the Zapco C2K 4KW and the Adassa Warlord....the RF T4000 did well to
the Soundstream XXX 6500 couldn't touch it on any freq...but none of them could touch
the crown down at the bottom....
the Crown looses absolutley no control or power and holds rock solid composure right down to 10hz
I'v been doing this a LONG time..this amp eats and craps out alot of the
top end home and commercial stuff I have played with
all comparisons were done with the same set up with a solid 14.5 volt power supply
..the JBL was wired at 4ohm and the other amps were wired 1ohm
..some of the other amps got better TL numbers up at higher frequency..
all tests with the mic on dash...doors closed and engine on
for example the Zapco C2K 4KW and the Adassa Warlord....the RF T4000 did well to
the Soundstream XXX 6500 couldn't touch it on any freq...but none of them could touch
the crown down at the bottom....
the Crown looses absolutley no control or power and holds rock solid composure right down to 10hz
top end home and commercial stuff I have played with
all comparisons were done with the same set up with a solid 14.5 volt power supply
..the JBL was wired at 4ohm and the other amps were wired 1ohm
..some of the other amps got better TL numbers up at higher frequency..
all tests with the mic on dash...doors closed and engine on
for example the Zapco C2K 4KW and the Adassa Warlord....the RF T4000 did well to
the Soundstream XXX 6500 couldn't touch it on any freq...but none of them could touch
the crown down at the bottom....
the Crown looses absolutley no control or power and holds rock solid composure right down to 10hz
Last edited by IT Hz; Nov 7, 2009 at 04:40 PM.
I'v been doing this a LONG time..this amp eats and craps out alot of the
top end home and commercial stuff I have played with
all comparisons were done with the same set up with a solid 14.5 volt power supply
..the JBL was wired at 4ohm and the other amps were wired 1ohm
..some of the other amps got better TL numbers up at higher frequency..
all tests with the mic on dash...doors closed and engine on
for example the Zapco C2K 4KW and the Adassa Warlord....the RF T4000 did well to
the Soundstream XXX 6500 couldn't touch it on any freq...but none of them could touch
the crown down at the bottom....
the Crown looses absolutley no control or power and holds rock solid composure right down to 10hz
top end home and commercial stuff I have played with
all comparisons were done with the same set up with a solid 14.5 volt power supply
..the JBL was wired at 4ohm and the other amps were wired 1ohm
..some of the other amps got better TL numbers up at higher frequency..
all tests with the mic on dash...doors closed and engine on
for example the Zapco C2K 4KW and the Adassa Warlord....the RF T4000 did well to
the Soundstream XXX 6500 couldn't touch it on any freq...but none of them could touch
the crown down at the bottom....
the Crown looses absolutley no control or power and holds rock solid composure right down to 10hz
Am I the only one who wonders why he's throwing out numbers at 10hz?
What music ever plays at 10hz? Hell, won't most amps use a SSF and cut off anything that low?
It just seems ridiculous to point out how great an amp is and then pull out a number that really doesn't matter at all
What music ever plays at 10hz? Hell, won't most amps use a SSF and cut off anything that low?
It just seems ridiculous to point out how great an amp is and then pull out a number that really doesn't matter at all
1. 160 at 30hz wont ever happen in a car with factory interior
2. out of all the vehicles that i have seen being competative and produce great numbers in any of the classes or categories that use a 12/14v set up I have NEVER seen a JBL amp, not once. Never seen a JBL amp win anything in any of those classes. Matter of fact I have only seen one JBL powered car that produced respectable numbers. It's too bad they were in extreme class where it's 97% enclosure.
2. out of all the vehicles that i have seen being competative and produce great numbers in any of the classes or categories that use a 12/14v set up I have NEVER seen a JBL amp, not once. Never seen a JBL amp win anything in any of those classes. Matter of fact I have only seen one JBL powered car that produced respectable numbers. It's too bad they were in extreme class where it's 97% enclosure.
but that's the only person I've ever seen/heard of that's done well with one.
Am I the only one who wonders why he's throwing out numbers at 10hz?
What music ever plays at 10hz? Hell, won't most amps use a SSF and cut off anything that low?
It just seems ridiculous to point out how great an amp is and then pull out a number that really doesn't matter at all
What music ever plays at 10hz? Hell, won't most amps use a SSF and cut off anything that low?
It just seems ridiculous to point out how great an amp is and then pull out a number that really doesn't matter at all
I don't build my systems to hit high numbers at 10hz....I build them so
that when the music drops it takes part of me down with it
..the high number hitting low end is just an added fun bonus
as far as the SS XXX 6500.....
I have seen them perform on 16 volts but seriously how many
people have an electrical system that runs at 16 volts besides hard core SPL ers ?
it still sucked azz on the lows though...
all the other amps did fine on 14.5volts.....I really liked the Zapco..it's a nice amp
you also need to look at how much current these other amps needed to perform at low frequency... some of the amps you tested need a 1 ohm load and are not as efficient, what kinda battery bank did you have to perform this test? did you meet the power demands of each amp you tested?
Am I the only one who wonders why he's throwing out numbers at 10hz?
What music ever plays at 10hz? Hell, won't most amps use a SSF and cut off anything that low?
It just seems ridiculous to point out how great an amp is and then pull out a number that really doesn't matter at all
What music ever plays at 10hz? Hell, won't most amps use a SSF and cut off anything that low?
It just seems ridiculous to point out how great an amp is and then pull out a number that really doesn't matter at all
I dont think thumpper realizes that alot of amps, especially now adays have have either built in SSF cut off at 10-15hz or are only producing frequencies in the range of 15-300hz to begin with (just like their manual says)
oh well, was a fun read up until this point.
