Alpine PXA-H701 Questions

**JasonWW** · 02-05-2006, 04:26 PM

Front 1 is usually meant for tweeters. Normally you would use front 2 for the front full range. Did you check the x-over settings and output level of the front 1 channels? Maybe they are set low.

**unixxx** · 02-05-2006, 05:00 PM

Thanks, JasonWW. That makes sense, as I was trying to play Front 1 through full range speakers. Answered my other question myself; the DSP with automatically switch between standard stereo/ProLogic and Dolby/DTS based on the S/PDIF signal.

**unixxx** · 02-14-2006, 06:05 PM

JasonWW:

The funny thing is that I had the Front 1 channels set to full, not tweeter.

**JasonWW** · 02-14-2006, 06:25 PM

I don't know what to tell you. You can try it again, make sure Front 1 is set to full and check the x-over freq and output level and see if it works.

**unixxx** · 02-14-2006, 06:39 PM

Just set my Front 1 X-Over settings to off (my Front 2 and Rear were already off) and it's working fine now. Thanks.

**JasonWW** · 02-14-2006, 08:40 PM

Hey, I know the RUX is sort of a remote volume control for the H700, but has anyone heard of a way to add another remote voume control that uses buttons?

I'm thinking of either an AI-NET hack you can wire some buttons to to turn the volume up or down.

Or tapping some wires to the rotary circuit in the RUX to some buttons.

Or maybe even using a small gear reduction motor with a rubber wheel that presses against the volume knob that rotates it. Then wire the motor to some buttons.

In case yor wondering why I need buttons, It's because I've found that to get the proper high volume levels I need I have to set the RUX to about 33 or so and use the PC volume control, but the noise floor is just not low enough. The H700 was obviously designed to be used as a volume control as it can lower the volume at the DACs which lowers the noise floor as the volume level goes down.

Then again my sound card, the Chaintech AV-710, may not have a high enough SNR on the digital out. I know soundcard layouts can effect the SNR so that even 2 cards using the same chips can have different SNR's. Then again, it may be Kmixer in Windows that's raising the noisefloor.

Anyone have any advice?

**JasonWW** · 02-20-2006, 08:59 PM

Does anyone know if the Toslink out from the Sirius ALP1 can be inputted into the H700 brain? If so, do you have to go into the input select and switch it every time you want to listen to sat radio?

Or does the analog output looped back into the sound card still sound really good?

I saw this thread:
FAQ: How to add Sirius satellite recevier to your car PC

**unixxx** · 02-21-2006, 02:56 PM

JasonWW, from what I've heard others say, the PXA-H701 (almost the same as the H700 I believe) will automatically switch to the digital input from analog when it detects a signal is present. However, if you have more than one digital input of your H701 connected you'll have to switch between them via the RUX control unit.

**cougarz** · 02-21-2006, 07:57 PM

In europe, the PXA-H701 is identical to pxa-h700. If you have a AINET HU and you connect pxa in AINET mode (not stand alone mode), this is the behaviour:
SOURCE: CD ->pxa chose input through ainet cable N°1 or optical input N°1. If pxa feels optical 1 input, automatically switch from AINET analog signal to optical signal.
SOURCE: CHANGER (only if a AINET changer is connected) ->pxa chose input through ainet cable N°2 or optical input N°2. If pxa feels optical 2 input, automatically switch from AINET analog signal to optical signal.
SOURCE: TUNER ->pxa chose input through ainet cable N°1 or optical input N°3. If pxa feels optical 3 input, automatically switch from AINET analog signal to optical signal.
SOURCE: AUX (you need a HU with AUX mode option)->pxa chose analog input through RCA inputs.
Volume, balance, fader, subw level are all controlled by HU. After installation you can disconnect RUX and use only HU+PXA

IN STAND ALONE MODE instead you choose every input manually and Volume, balance, fader, subw level are all controlled by RUX

I tried with

**JasonWW** · 02-21-2006, 09:01 PM

OK, I guess I should have mentioned that I'm using a PC with toslink out only, no analog or HU involved. I'm wondering if I can switch sound cards for one with a Toslink input and run the Sirius SPDIF output into the sound cards SPDIF input. That's kind of like the way most people use the "line in" for their XM. I wonder what would be involved in getting it to work?
Do you think RoadRunner can be set to use the SPDIF input on the sound card as the Sat. radio source?

I don't know, maybe I'm over estimating the sound quality of the Sirius toslink out and I should just go with the cheaper XM analog out looped back to the soundcards "line in" jack?