I have a box that doesn't have any visible speaker damage, and all 4 of them produce sound, but it's just kind of muddy. Not as "clear" as my other boxes. The problem isn't poor bass, or poor highs, it puts out both.......But it's just not precise sounding, it's just muddy.

So how do I know if upgrading the speakers would help? Could there be something else that is responsible? I don't know much about tuners or amps, so I have no idea if they could be responsible. Functionally the box works fine.

I replaced the speakers in my JVC PC-11. Originally when I got the box, it sounded really flat. I bought speakers with the intention to replace the speakers on my JVC PC-5, but they didn't fit. I put them in my PC-11 for grins and giggles, and I WAS FRIGGEN AMAZED! The box came alive. The originals were very hard and had very little movement to them. The new ones move like a speaker should. I love watching speakers hammering away while giving clean sound.

Fostex makes great drivers if you can find the right size. I eventually found Fostex drivers that fit in my PC-5, they are off-white(not white) but sound great. I didn't have the originals so I cannot compare old to new.

If you don't mind not having original equipment, a speaker change is an easy way to make that old box sound great.

Reli, the same happens to me with a Sanyo M920, and I don't know specifically if speakers are in bad shape or if it's simply this way in this model ...

New speakers should improve sound on 20+ year old speakers in any vintage bbx Its just finding the proper ones

chordeater --something is not well with your 920-

were it working right --you would have a very impressive , clear quality output.

well it does as i changed it on my jvc rc-550 its a mono box but with the new speaker it sounds a lot better

There are, in the car-audio scene, separate component speakers, commonly known as "splits". These typically are a tweeter and a woofer in separate housings, made so that you can have a tweeter installed on the dashboard or high up on the door while the woofer is mounted below on the door or in the kickpanel.

Could these speaker sets be of use in a boombox restoration if they can physically fit inside the unit? I am mentioning that this will involve the use of non-original parts.

With regards,

Simon Mackay

Usually car component speakers draw alot of power. I dont know if these boxes have enough balls to push em'. You might risk damaging these old timers.