Dumdum
Senior Member
Hey, thanks for putting the effort into a very detailed review site, I’m loving it so far! Especially the disappointing review of the performance of the Sony gs-9, that really is a bit cringeworthy considering it’s cost vs a topping d10 for example!
so onto me, I am a car audio fanatic, my current car is a small hatchback, it features an alpine cde-178bt as a source, but also has a 12v converted Apple TV 3rd gen, and very shortly this will be displaced by a topping D10 and an iPhone XR 256gb with tidal and an iTunes library, although tidal generally gets the nod
these source feed a Helix DSP pro 2 which has 31 band fully parametric eq for all ten outputs, takes 8 configurable rca, optical, coax in, and also speaker level with input eq also
this is shortly to be replaced with a Helix DSP mini which is a 4 in, 6 out but with all the digital ins and outs also
amplifiers are currently ground zero uranium 4 and 2 channels with variable bias adjustment between class ab and towards class a... this will be replaced soon with a Zapco 150.6ap (those who know car audio will possibly dribble at thos
speakers are hybrid audio L4SE playing as 150hz upwards point source, some random 6.5” midbass which we’re kicking about, soon to be replaced by my seas 22cm midbass drivers
and an alpine type R 12” subwoofer currently
now my visit was preceded by someone mentioning how poor a Sony gs9 was vs an iPhone $9 dac, I enquired if it was usual internet rhetoric with no basis or factual... for a refreshing change the guy pointed me towards here and so my journey began!
my reason for joining is I’d like to measure some items i own, simple frequency responses for example of my alpine CD player with various sources, the Apple TV as a digital source blows this away using my iPhone linked to both... I’m curious as to the differences
I’m well versed in using REW to measure cars, along with holm impulse and have just acquired ARTA, I have several test mics, a UMIK-1 usb mic and also a Dayton which is XLR with a M-Audio mobile pre, which I think works, but I’ll be honest I’d love to ask a few questions about that as I’m not 100% on how to set it up with my laptop for loopback measurements which is why I bought it, I’d also like to calibrate it to the best of my ability using a loopback measurement also and I think I should be able to then use that as an interface to measure freq responses of preouts from the alpine and the helix at least?
perhaps at a later stage once I’ve become accustomed to using the kit maybe measure an amplifier or two, and perhaps acquire a dac and measure the response of my iPhone and D10
So I guess my first question is, despite me searching for various terms I’ve not found an idiots guide to measuring frequency responses etc, which I’m presuming the usb sound card in my pc may even be able to do (I have four or five laptops at work with various ins and outputs, and a decent tower or two kicking about I’d love to measure, but I have no clue how to start, any links to how to measure a soundcard and m audio would be gratefully received
and also how to perform loopback measurements etc also
I’d like to use the m audio if possible to perform impulse response with the loopback as a timing reference if possible for the car to measure phase and timings
any help is gratefully recieved, if anyone ever needs help with car audio or car related issues just ask and tag me if that is possible
so onto me, I am a car audio fanatic, my current car is a small hatchback, it features an alpine cde-178bt as a source, but also has a 12v converted Apple TV 3rd gen, and very shortly this will be displaced by a topping D10 and an iPhone XR 256gb with tidal and an iTunes library, although tidal generally gets the nod
these source feed a Helix DSP pro 2 which has 31 band fully parametric eq for all ten outputs, takes 8 configurable rca, optical, coax in, and also speaker level with input eq also
this is shortly to be replaced with a Helix DSP mini which is a 4 in, 6 out but with all the digital ins and outs also
amplifiers are currently ground zero uranium 4 and 2 channels with variable bias adjustment between class ab and towards class a... this will be replaced soon with a Zapco 150.6ap (those who know car audio will possibly dribble at thos
speakers are hybrid audio L4SE playing as 150hz upwards point source, some random 6.5” midbass which we’re kicking about, soon to be replaced by my seas 22cm midbass drivers
and an alpine type R 12” subwoofer currently
now my visit was preceded by someone mentioning how poor a Sony gs9 was vs an iPhone $9 dac, I enquired if it was usual internet rhetoric with no basis or factual... for a refreshing change the guy pointed me towards here and so my journey began!
my reason for joining is I’d like to measure some items i own, simple frequency responses for example of my alpine CD player with various sources, the Apple TV as a digital source blows this away using my iPhone linked to both... I’m curious as to the differences
I’m well versed in using REW to measure cars, along with holm impulse and have just acquired ARTA, I have several test mics, a UMIK-1 usb mic and also a Dayton which is XLR with a M-Audio mobile pre, which I think works, but I’ll be honest I’d love to ask a few questions about that as I’m not 100% on how to set it up with my laptop for loopback measurements which is why I bought it, I’d also like to calibrate it to the best of my ability using a loopback measurement also and I think I should be able to then use that as an interface to measure freq responses of preouts from the alpine and the helix at least?
perhaps at a later stage once I’ve become accustomed to using the kit maybe measure an amplifier or two, and perhaps acquire a dac and measure the response of my iPhone and D10
So I guess my first question is, despite me searching for various terms I’ve not found an idiots guide to measuring frequency responses etc, which I’m presuming the usb sound card in my pc may even be able to do (I have four or five laptops at work with various ins and outputs, and a decent tower or two kicking about I’d love to measure, but I have no clue how to start, any links to how to measure a soundcard and m audio would be gratefully received
and also how to perform loopback measurements etc also
I’d like to use the m audio if possible to perform impulse response with the loopback as a timing reference if possible for the car to measure phase and timings
any help is gratefully recieved, if anyone ever needs help with car audio or car related issues just ask and tag me if that is possible
