Greetings from WA

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roflwaffle

Member (SA)
Howdie.
For years I've been telling myself I really needed to get myself a nice old boombox.

TBH, I've wanted one with the intention to gut it and modernize with some modern speakers/amp/electronics. Havn't explored forum enough to see if that's a thing here, but I've seen it elsewhere, so I assume I'll find some neat stuff here.

Anyway, picked up a JVC RC-828JW. I've had it in my possession for all of like 4 hours. It was sold as broken, figured best for gutting, but stupid simple to work on, and in an hour or so, had it working like new (well, cassette still unknown, but whatever), so replacing internals is off the table for a bit. Cleaning the funk off of it took quite a while.

Love the VU meters and RCA inputs and overall style (others far nicer, but for price, seems to be nice intro box)

Anyway, since it's now all working, sounds good enough for the beach and camping, so I think I'll limit such mods to just adding internal bluetooth, which should be a simple and reversable 'mod' if you can call it that. Hopefully not too sacriligious :D Seems a good box to learn on, see how well it holds up.

Built myself a boombox of sorts a few months back (all vacuum laminated wood), but ended up too much effort (and heavy) to rationalize actually using in the woods.

Anyway, mostly interested in making most of the aesthetics of the box, but emphasis on keeping it functional, as the classic look is quite pleasing. Not sure what common things people have learned in the 30 years since this thing was made that would increase use. Considering small things like making the 'dial light' stay on always, as LED bulbs should be efficient enough, and it looks better lit. Also interested in alternative power solutions for these things, as 8x D rechargables seems pretty inefficient way to power it given the available space. So any quick links would be helpful (I plan on searching after posting this hello)

Anyway, neat forum so far, glad to be here. Feel free to correct anything I'm super ignorant to, or point me towards good stuff... or just say hi :D... I'm a total noob to boomboxes, so anything helps.
 
Hi and welcome to Boomboxery.

You will find that the main emphasis here is the restoration and preservation of classic boomers apart from speaker swaps and adding flashing lights. The style and look of these things is where it's at for most here. And let's face it, these things often look better than they perform. But that's ok, after all they are over 30 years old.

I've completed a couple of DIY boxes and have posted details here. I'm a bit of an odd one out though with my interest of DIY boxes.

There are some truly great people on this site. I don't know how many times I've been helped out by the generousity of fellow members.

Enjoy your time here and don't forget the golden rule of Boomboxery: 'This thread needs more pics'

James..... :-)
 

roflwaffle

Member (SA)
Yea, after I posted intro, I browsed some more and saw that opinion to be prevalent. It's a noble goal. They do look better than they perform, hense desire to do reversable mods to them (well original intention was to gut it as it was sold as broken, but now that its working, sympathetic mods seem best form).

Anyway, pics forthcoming, I know :morepics:
 

roflwaffle

Member (SA)
CAM00052.jpg

This is a box I made out of boredom. Mostly to learn skills of acid etching aluminum and seeing how the quality was on some of the out of the box VU meter drivers and other misc stuff.

fun project. speakers are just minimus 5s, but whole center box was made from scratch. vacuum press to get rounded edges, almumim sheet acid etched then cut out. vu meters, battery meter, recharagable batteries, lit power button, internal USB/bluetooth. fairly basic, but first time in a while I've drawn out plans for something.

sorry for poor cellphone potato pics.
 
I like the centre section you made - it's got that 70s home Hi Fi look that I'm sure you were after. The etching and the big VUs are a great addition too - well done. :-)

He is my latest DIY box - bit more of your traditional boombox shape - no classy look to this one, it's all about getting the job done.

I made it pretty big to give the 8 inch drivers a chance to stretch their legs and produce some real bass:

I always crank it any chance I get - it's a brute! :-)

View attachment 15497
 

roflwaffle

Member (SA)
Very nice clean look. I get super nervous about enclosure design for the sound, when i last researched it, most guys seemed to be using software to get right shape and space and baffles and whatnot, so i kept with existing speakers.

How hard is it to get right? It looks like it certainly gets the job done!
 

SLO

Member (SA)
:hi: Whatever your into, we're glad to have you, there's a little bit of this and that around here so if you have questions, Im sure you will find answers. Have fun with it! :thumbsup:
 
roflwaffle said:
Very nice clean look. I get super nervous about enclosure design for the sound, when i last researched it, most guys seemed to be using software to get right shape and space and baffles and whatnot, so i kept with existing speakers.
How hard is it to get right? It looks like it certainly gets the job done!
You're right, it does get quite complex if you're designing ported style bass reflex enclosures. Lots of mathematical considerations are required to calculate the correct enclosure size, the position, ID and length of the bass port.

BUT, if you want to go the traditional HiFi route and stick with sealed enclosures, there are volume calculations that should be done. My simple rule is: 'the bigger the sealed enclosure, the bigger the bass'. So as long as you use a high density or thick material for the walls of the cabinets and use a suitable sound deadening material, you'll be on your way to having a nice sounding unit.

The best choice for a structurally strong box that is light enough to carry around is plywood. I went with 17mm ply for all parts of the box! This resulted in a completely dead enclosure (no vibrations, resonances etc) - you don't want to hear the box, only the speakers!

The bass from a sealed unit is very clean. I'm addicted to the honest, thumping bass this thing cranks out!

You would need a much bigger casing to allow my big drivers to produce big bass in a ported design so it's just not practical in a portable unit - it's big enough already! :-)

Remember, in a sealed design, the bigger your drivers, the easier it is to achieve strong, satisfying bass!

James.... :-)
 

trippy1313

Member (SA)
I didn't even notice, another WA member! I'm a little late, but if you come back, stick around man, you'll learn a lot and get a lot of help/info from this group. Good people we've got here.

And our Northwest members are low in numbers, we could use some more to get some meets going
 
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