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Soundcard and MAXPRO1

 
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Soundcard and MAXPRO1
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zael
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Joined: 17 Dec 2002
Posts: 17

Post Soundcard and MAXPRO1 Reply with quote
I have the MaxPro1 with stereo encoder and a slow computer (380Mhz) with a Soundblaster AWE32 sound card (ISA slot), I've been broadcasting running winamp with soundsolution and the sound is excellent, clear and clean.

Now I'm upgrading my system to a faster CPU but I have to use PCI soundcard.
I tried Soundblaster PCI 128 but now when I connect the audio to the transmitter I hear too much noise and the music sounds distorted.
I tried the onboard soundcard of the motherboard and the sound is horrible too with transmitter (computer noise in the sound and low volume).

I'm trying to find a good PCI soundcard tu use with the MAXPROI.
What SoundBlaster PCI model is similar to the old AWE32??

Which PCI soundcard (specifications) should I use to get a nice, clean and clear sound ??
Wed Oct 20, 2004 9:48 pm View user's profile Send private message
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
Two things:

1.) Use highest possible output level on your sound card
and than close volume on max pro I (trimmer)

2.) YOu probably have ground loop somewhere, this can
be fixed in two ways
a.) Get audio isolation transformer, this can be
sometimes purchased as audio transformer, perhaps even
at radio shack. This will break the ground loop.
b.) Wait for our LIMBO II (limiter and processor) or SE4 (stereo
encoder). These both have unbalanced inputs so you can
avoid the noise from ground loops. The difference is quite dramatic.

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Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Wed Oct 20, 2004 9:53 pm View user's profile Send private message Visit poster's website
Sir Nigel
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Joined: 28 Nov 2003
Posts: 334
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Post Reply with quote
If too much noise is a result of the computer itself you might want to consider an external USB sound card. Creative has a neat one.

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Thu Oct 21, 2004 12:23 am View user's profile Send private message Visit poster's website
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
I doubt that it is the card itself.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Thu Oct 21, 2004 1:15 am View user's profile Send private message Visit poster's website
zael
New registered user
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Joined: 17 Dec 2002
Posts: 17

Post Reply with quote
I'm afraid I already tried more than two things:

1.)More output level in the soundcard results in more noise, In fact at the highest volume the noise and hissing is higher and the music sound is still too low (even if volume is open in MAXPRO1) compared with the output level of the AWE32.

2.)Everything is correctly grounded, I have no noise when I use the old computer (AWE32) but with the new one with the SB PCI 128 the noise is present like I said.
I've tried some other onboard soundcard and is the same, even with the old PSU.

I can say that the problem is the sound card, it's like outputing noise and hissing more than music sound level and it seems it has a different output impedance too.

I've noticed that the AWE32 sound card has an amplified output, so
the sound is loud, clean and clear, and strong enough to drive the transmitter.
Those other soundcards I tried have a weak output, it's like only line out, and if I use an amplifier doesn't help cause is still noisy and distortioned.

So, Must exist a PCI soundcard with amplified sound in the output, like the ISA AWE32.
Thu Oct 21, 2004 4:53 am View user's profile Send private message
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
I still think its the ground loop.

Do you hear the noise when you listen to the music via speakers?


I had a chance to try AM MAX II with a PC a few weeks ago.
I've had the same problem until I used balanced inputs.
As I said the difference is quite dramatic.

Grounding doesn't help, in fact it helps create these ground loops.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Thu Oct 21, 2004 8:37 am View user's profile Send private message Visit poster's website
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