Coral BX-200 refurb

bamaboy · Apr 25, 2011

I got these a while back for $9.99. I began to pull em apart this weekend to see whats inside. The drivers look brand new. Wasnt expecting the tweeter to look like this. I like the interesting look of the grills. The cloth was stained pretty bad, and I couldnt get it clean. So, i soaked it in coffee for a while and let it dry. This did a pretty decent job of hiding the stains, and the smell is that of a dark roast! Thoughts on these speakers?

bamaboy · Apr 25, 2011

bamaboy · Apr 25, 2011

before the coffee treatment.......

after coffee.......

bamaboy · Apr 25, 2011

more to come on these.....

I plan on refurbing the cabs as well, this project will take some time, i will update as I make progress. Curious to see how they sound.

gearhound · Apr 25, 2011

I had a pair of those a few years back.
I think Herman Munster was the previous owner.
My impressions?

The good:
I thought that the Alnico horn loaded tweeters were the stars of the show.....really good, IMO.
The mid-range was detailed and forward, vocals were quite good.
Super-efficient, you could run these to silly-loud sound levels with a watt of power or so.

The bad:
Someone stole the bass?

I replaced that 2uf capacitor, with a Bennic Poly if I remember correctly?

Good luck with your restoration!
Steve

Isotonic · Apr 25, 2011

I have a pair of these on the cue. Mine are in really good cosmetic shape. I suppose these would sound good with a little subwoofer on a desk system? I love the grills. My wife does too!

bamaboy · Apr 26, 2011

Thanks for the info, i have a couple of powered subs i guess i can run with them to help find that stolen bass. thx.

AlphaEcho35 · May 2, 2011

Doing the same to BX-300's

Hey Bamaboy,
I'm doing the same thing to a couple of BX-300's that I picked up recently. They don't have the fancy grillwork, but the build is similar. They are a little light in bass, but they are clear and crisp sounding.

ppontiac · May 28, 2011

I also have a pair. Good shape & paid $15 for the pair at a thrift store. Lite on bass. The tweeter isn't affected hardly at all by any treble gain. Maybe the caps are bad. I am considering replacing the woofers with Daytons (already tried) and the tweets with Minimus 7 tweets & crossovers (already tried, too). So the guts could be for sale.

djnagle · May 28, 2011

These are cool looking cabs and grills. They might make a great Indignia!

Les Lammers · May 28, 2011

Change the caps for sure. *I* would use another paper in oil cap. YMMV. Check epay for grill cloth. I got some there for a very good price buy it now.

http://shop.ebay.com/i.html?_from=R...speaker+grill+cloth&_sacat=See-All-Categories

The small boxes mean they will be light in the bass but they are decent speakers.

Sam Cogley · May 28, 2011

Coral made some very nice drivers, but got lazy with the crossovers in their own speakers. Other companies (like Kanazawa) did some pretty amazing things with Coral drivers. You might want to look into building a proper crossover to get the best from the drivers and cabinets.

ppontiac · May 31, 2011

bamaboy, what camera are you using to take those upclose pictures? They look great.

bamaboy · Jun 5, 2011

and heres the finished product

pics taken with Canon Powershot SD1200 IS digital Elf 10.0 megapixels.

havent really had a good listen yet, gonna run them with my sx440 in the bedroom. I gotta figure out some stands.

the coffee bath

bamaboy · Jun 5, 2011

they sure turned out purdy

bamaboy · Jun 6, 2011

They sound nice.

bamaboy · Jun 6, 2011

Damn, I must say, I'm impressed with the sound.

DonQuixote99 · Jun 30, 2012

On the subject of Coral Speakers, just snagged some BX-201s. Look just like the more-common BX-200s, but can't find any specs on them.

I doubt if there's significant difference. Here are BX-200 specs:

BX-200 data from http://audio-database.com/CORAL/speaker/bx-200-e.html
System 2 ways, 2 speakers, a sealing system, and a book shelf type
Use unit
For low-pass : 16cm corn type
For high regions : Phon type
Impedance 8ohms
Play frequency band 50Hz - 20000Hz
The maximum input 15W
Crossover frequency 4000Hz(6dB/oct)
Output sound pressure level 98dB/W
Dimensions Width 268x height 368x depth of 220mm
Weight 4.5kg

One difference: the label on the BX-201s claims a maximum "music power" input of 30 watts, but it drops the '15 continuous' spec. A marketing revision has happened, at least. Identical frequency response specs remain.

Drivers look very similar, but Coral branding and other specifics have been added to markings. 2 mfd crossover capacitor is unchanged:

Poultrygeist · Jun 30, 2012

Alnico full rangers with a simple cap as a crossover it's no wonder they sound good. Corals are a favorite with the DIY guys.

simao · Apr 9, 2020

Hi all - I'm ready to go to work on these and have taken them apart and have new caps in possession. Question: I want to keep the original horn structures, so what's a good replacement tweeter that will fit in the existing tweeter horns?

Many thanks for your expertise and patience

Coral BX-200 refurb

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