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Hi Leif,
When driving around and listening on the FM in a car, in weak stereo areas it sounds like the volume is jumping up and down.
Then I discovererd something on the tuner in the studio, when I switch the tuner to Mono, we loose around 1.5db in gain!
If I do the same thing to another station on the tuner, the level stays the same!Do you think we have a PEQ issue in the 20k + region or is it something else?
Any help appreciated..
Regards
Make sure spartacus isn’t on in winamp, either if it’s there, too.
At first, for me, Spartacus ended up in Winamp AND BB. Not good.
I tried spartacus…and bypassed it shortly after hearing it. Didn’t knock my boots off…at least for FM use.
I had the same problem in some sony radios in old Cars…
The cause is …clipper on the exciter.
disable any mpx limiters clippers at the links or at the exciters!!
and play at max 75 KHz…or less
MPX clipping is baaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaad.
( in most cases ) ( the shape of your signal becomes flat and some recievers lcok 1.5 MHz before your frequency
and in some recievers the volume is like ..bad compressed voice…when using mpx clipiping.🙂)
Sgeirk – I don’t use Winamp
Camclone – I don’t have a clipper in the exciter/link & funny enough, it is an old Sony radio I’ve been listening to it on in a car. Modulation isn’t over 75khz and I think it has locked 1.5 Mhz away from our frequency on occasion….. 😯
wow ! that fu@@@ing old sony radio…
some stations play OK, some stations play like compressed with pump ups on volume ..
what’s going on here?:)
i don’t know.
in my case..it was the exciter clipper…the problem,
Hi Modman!
Was the station you were comparing to, by any chance, playing MONO at the time?
Because, if the signal is mono, or nearly so (even if the pilot is on), you won’t lose any loudness from switching to mono.
However, if the signal is wide stereo, switching to mono cuts out a LOT of information, and loudness can drop significantly.
This is why there is a Mono button in Breakaway Broadcast. It doesn’t just turn off the pilot, it also sums to mono BEFORE the processing, instead of after. This way, any loudness loss will be compensated for by the compressor.
This problem is inherent to Stereo vs Mono, regardless of medium. The only way to avoid it is to do L+R/L-R processing, but doing that on FM would mean you’d be 3dB quieter *all the time* instead of just when listening to wide stereo programming with a mono receiver. 😉
It can not possibly be a PEQ issue — that would have shown up during calibration, and/or on your modulation monitor.
Best,
///LeifThanks Leif,
The station I was comparing to was full Stereo and I didn’t really notice a drop in level when switching tuner to Mono.
I did notice when you switch BBP to Mono it compensates by raising the output though like you said.
It’s probably fine, there’s obviously a problem with old Sony Car Radios, like Camclone said because it makes even some of the big stations sound awful!
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