Sound is all muffled, kinda like only base is coming through, no treble, no it's not the speakers, i treid it w/ several differnt speakers that work fine on other stereo's, its deffinately something w/ this system. i opened and blew w/ canned air, checked all obvious things, wires crciuts, nothing obvious....
Please connect the headphone to your system and check the sound quality,If it sound good then the connection of the speakers are not ok. This system has HI & low frequency output. Connect woofer to LOW frequency output and tweaters to HI frequency.
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On most TV's with speaker control there's a way to disable the TV's volume control effect on the level fed out to an external amplifier. Find it and disable it it or select FIXED for its level, or, while listening through the Aiwa, raise the TV's volume through its own remote and see if that affects what the Aiwa gets for volume.
Or, enable the TV's speakers but find the same interna lAudio setting and make it Fixed, but turn the TV volume down if you don't want to hear its speakers. That way, you could actually listen to the TV on its own speakers if you want, say, for casual watching of the Weather Channel or news, for example.
When you connected the speakers, one of the following may have occurred:
1) Crossed the wires (smoked the outputs)
2) Presented too low an impedence load to the amp section (overheated and smoked)
There are other possibilities as well, but those are the most common. In any case, try disconnecting hte speakers altogether and trying to turn on the system. If it turns on, then the problem is either the wiring or a bad speaker. If the system stil won't power up completely, then the output section needs to be checked. These units have discrete output transistors that can be checked by a service shop. These are not too expensive but are somewhat unique to Aiwa systems. Figure on $20-$40 for parts.
The ground wire is the one with either the stripe, running the length of same, or the black wire, or the grey wire or the green wire or whichever of many coding systems in use on your speaker leads and always designated on the back of the speaker as the (-) negative lead and on the back of the unit, if using RCA PLUGS as the body, not the tip of the lead.
Same model, same problem. (CX NA-50) I have one that worked great for two years (at best) and I haven't used it since then. I recently decided to look for a solution via the internet.
I read somewhere else that there was a class action settlement with aiwa (now expired) since many of these units had this problem.