connecting audio ports on Ambec case

buddydawg · 07-03-2009, 08:31 PM

I am building my first computer and have run into my first problem. I have a Gigabyte GA-MA790X-UP4P mobo and a Antec Three Hundred Case. When it came time to connect the audio ports, the signal names for the pin assignments of the module connector for the HDA and AC'97 shown in the Antec user's manual do not match the pin assignments of the motherboard header shown in the mobo user manual. Is there any way around this? When I bought the case and mobo from Newegg, several reviewers had the same combination so I assumed they would be compatible. Am I missing something?

**wrench97** · 07-05-2009, 07:13 AM

Which Antec case do you have?

buddydawg · 07-07-2009, 11:09 AM

The Ambec Three Hundred case.

I am thinking now that maybe the connectors aren't necessary. Maybe my graphics card will be enough.

**wrench97** · 07-07-2009, 01:10 PM

Antec 300?
What is different about the connections?

buddydawg · 07-07-2009, 05:38 PM

Here are the descriptions of the pins from the manuals:

Pins on the Antec 300 are labeled HDA (AC'97):
1: Mic2L (MIC In)
2: AGND (GND)
3: MIC2 R (MIC Power)
4: AVCC (NC)
5: FRO-R (Line Out (R))
6: MIC2_JD (Line Out (R))
7: F_IO_SEN (NC)
8: Key (no pin) (Key (no pin))
9: FRO-L (Line Out (L)
10: Line2_JD (Line Out (L)

Pins on the GIGABYTE GA-MA790X-UD4P motherboard for For HD Front Panel Audio (AC'97 Front Panel Audio):
1:MIC2_L (MIC)
2:GND (GND)
3:MIC2_R (MIC Power)
4:-ACZ_DET (NC)
5:LINE2_R (Line Out (R))
6:GND (NC)
7:FAUDIO_JD (NC)
8:No Pin (No Pin)
9:LINE2_L (Line Out (L))
10:GND (NC)

buddydawg · 07-07-2009, 05:42 PM

I considered connecting it despite the differences, but the Gigabyte manual says:

"Make sure the wire assignments of the module connector match the pin assignments of the motherboard header. Incorrect connection between the module connector and the motherboard header will make the device unable to work or even damage it."

It was the "or even damage it" part that kept me from trying it.

**wrench97** · 07-08-2009, 01:15 AM

That's correct the pins 6 and 10 are grounds or return for the speakers. Pins 5 & 9 the speaker signal, 1, 2 & 3 for the Mic.

buddydawg · 07-08-2009, 08:31 AM

So I guess the connections should be okay?

**wrench97** · 07-08-2009, 01:13 PM

Yes the Antec description leaves a lot to be desired.

07-03-2009, 08:31 PM	#1 (permalink)
buddydawg Registered User Join Date: Jul 2009 Posts: 5 OS: xp	connecting audio ports on Ambec case I am building my first computer and have run into my first problem. I have a Gigabyte GA-MA790X-UP4P mobo and a Antec Three Hundred Case. When it came time to connect the audio ports, the signal names for the pin assignments of the module connector for the HDA and AC'97 shown in the Antec user's manual do not match the pin assignments of the motherboard header shown in the mobo user manual. Is there any way around this? When I bought the case and mobo from Newegg, several reviewers had the same combination so I assumed they would be compatible. Am I missing something?

07-05-2009, 07:13 AM	#2 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,672 OS: Win7	Re: connecting audio ports on Ambec case Which Antec case do you have? __________________ Power Supply and Selection

07-07-2009, 11:09 AM	#3 (permalink)
buddydawg Registered User Join Date: Jul 2009 Posts: 5 OS: xp	Re: connecting audio ports on Ambec case The Ambec Three Hundred case. I am thinking now that maybe the connectors aren't necessary. Maybe my graphics card will be enough.

07-07-2009, 01:10 PM	#4 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,672 OS: Win7	Re: connecting audio ports on Ambec case Antec 300? What is different about the connections? __________________ Power Supply and Selection

07-07-2009, 05:38 PM	#5 (permalink)
buddydawg Registered User Join Date: Jul 2009 Posts: 5 OS: xp	Re: connecting audio ports on Ambec case Here are the descriptions of the pins from the manuals: Pins on the Antec 300 are labeled HDA (AC'97): 1: Mic2L (MIC In) 2: AGND (GND) 3: MIC2 R (MIC Power) 4: AVCC (NC) 5: FRO-R (Line Out (R)) 6: MIC2_JD (Line Out (R)) 7: F_IO_SEN (NC) 8: Key (no pin) (Key (no pin)) 9: FRO-L (Line Out (L) 10: Line2_JD (Line Out (L) Pins on the GIGABYTE GA-MA790X-UD4P motherboard for For HD Front Panel Audio (AC'97 Front Panel Audio): 1:MIC2_L (MIC) 2:GND (GND) 3:MIC2_R (MIC Power) 4:-ACZ_DET (NC) 5:LINE2_R (Line Out (R)) 6:GND (NC) 7:FAUDIO_JD (NC) 8:No Pin (No Pin) 9:LINE2_L (Line Out (L)) 10:GND (NC)

07-07-2009, 05:42 PM	#6 (permalink)
buddydawg Registered User Join Date: Jul 2009 Posts: 5 OS: xp	Re: connecting audio ports on Ambec case I considered connecting it despite the differences, but the Gigabyte manual says: "Make sure the wire assignments of the module connector match the pin assignments of the motherboard header. Incorrect connection between the module connector and the motherboard header will make the device unable to work or even damage it." It was the "or even damage it" part that kept me from trying it.

07-08-2009, 01:15 AM	#7 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,672 OS: Win7	Re: connecting audio ports on Ambec case That's correct the pins 6 and 10 are grounds or return for the speakers. Pins 5 & 9 the speaker signal, 1, 2 & 3 for the Mic. __________________ Power Supply and Selection

07-08-2009, 08:31 AM	#8 (permalink)
buddydawg Registered User Join Date: Jul 2009 Posts: 5 OS: xp	Re: connecting audio ports on Ambec case So I guess the connections should be okay?

07-08-2009, 01:13 PM	#9 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,672 OS: Win7	Re: connecting audio ports on Ambec case Yes the Antec description leaves a lot to be desired. __________________ Power Supply and Selection