Question about Audio Players & Recorders
I just picked 1 up.i have a problem with the dsp i believe. all channel work in analog format.when playing in digital or using a digital source only the front right dhannel plays.i heard there is a issue with dried uop cap. on the dsp.do you have any experienc witih the avr7000? also i nned a remote that would work with it .that would beable to bring up the osd.any advice?By the way thanks 4 accepting me as buddy. I'm good with car audio and i'm a A+ tech.
OK, now for the right answer! I just finished fixing one of these with similar problems, no surround, but stereo OK.
On the audio processing board and the DSP board and maybe the audio I/O board, every capacitor smaller that 47uF will probably be open. You can use an ESR meter in circuit to test them, but I got tired of that after about the 10 th one and just changed them all - no more problems.
Don't worry about the big capacitors.
Posted on Feb 08, 2008
I don't work on many car amps anymore although have in the past. ( Just not something I care much for, You know we all have our favorites). The caps being bad is definally a stong possibi;ity as I find this same problem in surround sound home systems, but also find that if there are bad caps, I normally find resistors in the cap area may also be bad, which I would suggest you also check that possibility. I sell remotes, but don't know if they would work with your system. I'de suggest searching on remote web sights. ( then you'de be assured the remote should work ).
Thanks also to you for requesting me as a buddie and should I come up with a problem I can't figure out, rest assured, I'll be knocking on your door.
Posted on Jan 29, 2008
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Posted on Jan 02, 2017
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Apr 29, 2011 | Harman Kardon AVR 30 Receiver
The following is some boilerplate I made up that should explain some usage limitations.
Be advised that the engagement of any device in a Tape Monitor loop on a late-model Audio/Video Receiver will effectively tie the receiver down to stereo-only analog sound reproduction. I'll explain.
The connections themselves are fairly simple but it pays to understand what happens in the loop.
In general, any Line-Level external processor (EQ, dynamic range expander, etc) will go into a Tape Monitor loop on a receiver. A Tape Monitor, when engaged, sends the stereo analog signal Out to the Processor, massages it and returns it to the receiver via the Tape Monitor IN connectors to be passed on to the receiver's internal processes (volume, tone, whatever).
Old school analog stereo-only receivers consistently work this way. Newer digital and audio/video receivers introduce a couple of problems: 1) digital sound processing to simulate a variety of soundfields; 2) multiple output channels, either discrete or digitally-generated.
The latter requires that whatever signal is being processed experiences a maximum of one analog-digital-analog conversion.
EVERYTHING analog coming into the modern digital receiver is automatically converted to a digital signal for internal processing unless you choose a STEREO-only or STEREO-Direct setting. Consequently, no further external analog-digital conversions would be allowed if, say, a Tape Monitor circuit was activated, and a possible feedback loop could otherwise be created in a digital-sourced selection (output to its own input), so the unit is wired to treat the Tape Monitor as the first analog step in the process and defeats any pure digital sources.
In a multichannel unit, what would happen to the other channels if you sent ONLY the Front Left & Right out for processing? They would NOT be processed. That logical problem also plays into the decision to defeat digital sources if the Tape Monitor is activated. I don't totally agree with the engineers but that's the way it is. Nature of the digital beast.
Okay, back to the hook-up:
Any of the following audio connections on the HK will work: Tape, Vid1 or Vid 2.
Receiver Tape Out (Rec) - to the External Processor (EQ, whatever) Preamp-, Rec, Line-In;
Receiver Tape In (Play) - from the External Processor (EQ, whatever) Preamp-, Play , Line-Out.
So, to sum up, you can only use the EQ or any outboard processor for analog stereo sources. If you actually want to use an analog recording deck you could place it within the typical Equalizer
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