These are pre-built ones. Most but not all still have some webbing inventory remaining. Recommended for USA buyers only. International buyers, be prepared for shipping sticker shock -- prices have skyrocketed and service is very slow. PM me for price list. Don't bother Joe, he'll just send you to me.
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The rough metal attachment grommets do not look good, they shoud at a minimum be blasted slightly. I'm pretty sure I can stamp them out and give them a good polish with a light milling so they look acceptable. Probably cheaper. Chroming would add a premium. If these JVC booboxes are a premium level piece of audio equipment they should have the highest quality accessories available as well. Maybe someone can work a deal vwith JVCKenwood Victor Entertainment to aquire the rights to use the JVC logo on acccessories. I don't deal with it boomboxes all the time, actually not that much. I just want them to be able to function acceptable. I'm no Audiophile. I can repair them to an extent, but I do not have the old school testing equipment, nor do I wish to have it. I am mainly looking for replacement wear parts. I'm sorry if I came back too strongly, but I do not have the patience I did 45 years ago. I know you are probably the best when it comes to boomboxes. I just want to find replacement wear and tear parts. The 3090 is hard to find parts for. I have owned M-70's, M90's, Cheap ass Discolites. Crowns, smallest to the biggest, Top of the line Sanyo's, Sony's, Hitachi's, Pioneers, Sharps etc. I just do not put 100% of my time towards them. I have gave many away to younger family members - they usually end up "lost". Most of my boxes are real oddballs, but some are identical to the more known names. I have many different pursuits. I am not a specialist like you. I think I first joined the forum around 2012. After a divorce, after being married 30 years, then a second wife's death after 7 years you tend to be more easily irritated.