Maybe once it gets cooler in Phoenix and I can ride my motorcycle to and from work. That way I can pull the amps for a week to send to you.If we make advance arrangement I can turn it around quickly.
Maybe once it gets cooler in Phoenix and I can ride my motorcycle to and from work. That way I can pull the amps for a week to send to you.If we make advance arrangement I can turn it around quickly.
Does it ever get that cool in Phoenix??Maybe once it gets cooler in Phoenix and I can ride my motorcycle to and from work. That way I can pull the amps for a week to send to you.
LOL!Does it ever get that cool in Phoenix??
Every time I see this thread I think about the Burmester system in my wife's car and shake my head at the absurdity of it.
I think Mercedes Benz has a Burmester branding of its Sound System. I once saw a picture of the speaker hiding behind the speaker cover... I think the cover was a lot more expensive than the speaker itself.
The only OEM sound system I heard of to be of good quality is that of Volvo... But I never heard it myself. And I doubt that it uses its full potential because a time correction/ level matching/ EQ which is the optimum for the drivers seat is a desaster for the other seats. So mostly OEMs are doing compromises which sort of work for all places. But this way you never get proper frontstaging and instrument localization.
My wife's previous vehicle was a 2014 XC60. Its sound system was very good; certainly not inferior to the Burmester in her new Mercedes.I agree. The 2020 Volvo XC90, for example, has stellar in-car sound for an OEM build.
Alpine was doing that, a buddy of mine worked on it. They extended the feedback loop out past the passive lowpass filters. Vaguely like Kenwood's Sigma Drive kinda sorta...maybe not really. Not sure why everyone doesn't do it; I suppose it is tricky. Not sure if they are still doing that.Only the best class D amplifiers for home use have post filter feedback to deal with this. Will have to test high-end car class D amps to see if any of them do the same.
UighursThat price lol. Call up the company and ask who they have enslaved
?!? The power is a bit more than 1/2 the 4 ohm power: er, isn't that expected? What am I missing here?Power drops a lot with 8 ohm though due to power supply voltage being too low:
Uighurs
?!? The power is a bit more than 1/2 the 4 ohm power: er, isn't that expected? What am I missing here?
As a longtime car audio nut I applaud the decision to test car stuff! And nice battery.
- Any thought to make semi-inductive/semi-capacitive loads? (Like to test at say 80 Hz fixed). Way back when we tested different amps with the Power Cube, some amps that measured similar with resistors would just die into phase angles.
- I'm very curious how head units' linearity is these days, out of their preouts and out of their power amp sections.
- I'd also think a dedicated car audio section would be warranted.
It is very easy to get stability problems causing oscillation. So yes, it is very tricky!Alpine was doing that, a buddy of mine worked on it. They extended the feedback loop out past the passive lowpass filters. Vaguely like Kenwood's Sigma Drive kinda sorta...maybe not really. Not sure why everyone doesn't do it; I suppose it is tricky. Not sure if they are still doing that.
Usually amplifiers are current limited so 4 ohm doesn't do twice as much as 8 ohm. You are voltage limited when the 8 ohm can't do more (reverse logic).?!? The power is a bit more than 1/2 the 4 ohm power: er, isn't that expected? What am I missing here?
Sam is one of two guys in the U.K. who mends such amps, and big unsupported boards on a poorly made box (most of the U.K. enclosures) don’t fair very well, so Sam has a fair few to repair being the longest standing guy in the U.K. mending them…Be real interesting to see those monstrous multi-KW class D sub amps on test here. Those things have a bizarre tendency to blow up - judging by how much work that dude BareVids on youtube has.
Cool. I remember the good old days with my lowered pickup and 4 12"s in the back. lol. Funny how many "upgraded" factory stereos are still not great,He will have my alpine pdx v9, f6, and a nvx m2 on Wednesday.