ADS L300C

[soundmotor]

I have no photos.

I replaced the capacitors with the same value as found on the crossover. (I do not recall what the value was.) I do not think it wise to change values from what was original. The crossover could change values in different editions and I do not consider myself smarter than the people that designed the speaker.

IIRC the original through CC versions are the same except for the treble pad resistors (IIRC). The L300e network is quite different as all the drivers were changed.

The L300 C is an early 80s variant and denotes it being for CAR use. The 206-0101A tweeter has inside dome coating vs. outside as on the no suffix L300. It may also have ferrofluid too. If so, the speaker nearing 40YO and both the FF & electrolytics are likely at the edge of service life. The tweeter caps are mylar & probably fine. If they do get swapped be aware that polypropylene ones will have a lower ESR so you might need to add resistance to the treble pads to rebalance them. It won't be much though, perhaps a few tenths ohm per side.

 

[mars_volta]

Thanks motor! I noticed the tweeters can not be pushed in. Seems to be a hard ball or something behind the dome. I always thought it was a soft ball of something.

 

[GD70]

Thanks motor! I noticed the tweeters can not be pushed in. Seems to be a hard ball or something behind the dome. I always thought it was a soft ball of something.

That's interesting. The domes are usually very soft. I'd guess the coating on the undersides was for heavy duty car use?

 

[mars_volta]

The dome is soft and can be pushed in, but it hits a 'stop'. There is a hard smaller diameter ball behind. I always imagined it like a soft cotton ball.

 

[darkblue94]

I have a pair of the 300i plate speakers stashed away in a box in the garage. They are basically the same as the 300 box speakers minus the box. They are way too good to be wasting away in storage. I should dig them out and mount them in some small boxes and then use them for nearfield speakers. They did like a fair bit of power for use in a car but should be fine with less in a computer setup.

 

[soundmotor]

It's a 1/3 hemisphere of hard felt behind the dome. The domes were coated on the inside because they'd get furry much quicker in a car than in a home. The more junk that sticks to the dome the less output it will have. The 206-0101A tweeters were the only ones like that.

 

[mars_volta]

Picked up a Walnut Canton Plus B sub and some GL 260s. One of the tweets is out but I think I like these better already. What a cool little system!