I feel a hiss with amp on the channel

marcello_italy · 12-11-2008, 04:55 AM

hallo i have a navi professional original
yesterday i have installing an amp with the hi level (no rca) and when i connect the channel of hi level in input i feel a hiss

how i can resolvin the problem??
i have the 4800 phonocar amplifer

http://www.phonocar.it/easysite/sche...lingua=inglese

mike_b · 12-11-2008, 06:05 AM

Ciao Marcello

Check that you have wired the hi-level polarity correctly (check the positve and negative of the speaker cable are correct)

If that is correct, the gain on the amp might be set too high.

What speakers are connected to the amp?

marcello_italy · 12-11-2008, 11:42 AM

Quote:

Originally Posted by mike_b

Ciao Marcello

Check that you have wired the hi-level polarity correctly (check the positve and negative of the speaker cable are correct)

If that is correct, the gain on the amp might be set too high.

What speakers are connected to the amp?

i have chech with the tester the polarity it is right!!!
i have down the gain but the noise is same

yunus · 01-18-2009, 01:32 PM

did you ever get this sorted out , i have the same problem !

12-11-2008, 04:55 AM	#1
marcello_italy from italy 6 Rep 55 Posts Drives: 335I Join Date: Mar 2008 Location: ITALY GENOVA iTrader: (0) Garage List 2008 E92 335i [0.00]	I feel a hiss with amp on the channel hallo i have a navi professional original yesterday i have installing an amp with the hi level (no rca) and when i connect the channel of hi level in input i feel a hiss how i can resolvin the problem?? i have the 4800 phonocar amplifer http://www.phonocar.it/easysite/sche...lingua=inglese __________________ BMW 335i Spacegrey - Cerchi styling 230 19" - Assetto sportivo M - Tettuccio - Pelle Dakoda Schwarz - Sedili Sportivi - Navi. Pro 16:9 - Adaptive light Control - 306 cv.
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12-11-2008, 06:05 AM	#2
mike_b Private 9 Rep 67 Posts Drives: 2005 E90 323i M-sport Join Date: Sep 2008 Location: Johannesburg iTrader: (0)	Ciao Marcello Check that you have wired the hi-level polarity correctly (check the positve and negative of the speaker cable are correct) If that is correct, the gain on the amp might be set too high. What speakers are connected to the amp?
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01-18-2009, 01:32 PM	#4
yunus Private 2 Rep 71 Posts Drives: BMW 135i DCT 2011 Join Date: May 2008 Location: CAPE TOWN iTrader: (0)	did you ever get this sorted out , i have the same problem !
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