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Genesis 300 transducers

I recently bought a pair of Genesis 300's. After setting them up in my room and making a bunch of measurements I noticed about a 10dB difference between the right and left speaker around 10kHz. At first I assumed that the tweeters had something funny going on, but after more study I noticed a difference in the planar transducer attachments.

One speaker has a red and black wire coming out of the transducer with two wire connectors connecting it to the wires coming off the cross over. The transducer also has a Bohlender and Graebner sticker on it.

On the other speaker (with lower output) there are no stickers and the wires coming off the transducer are gray and white. These wires are soldered to the wires coming off the crossover with heat shrink on them.

If there are any Genesis 300 owners, or 350's for that matter, out there. Could you tell me which is the original transducer? Also, does anyone have any suggestions on how to balance the sound of these two beasts without buying 2 new RD-48's from parts express?
scvan
ngjockey
1,042 posts
 
That's easy, the 300's had Carver ribbons, not BG, so neither are origional. I've replaced both RD48's on my 350's and the ones I bought it with were grey/white. Some confusion on whether they were origional or not. The 350's first came with Carver's but 350SE's used BG RD48's along with the full array of tweeters.

Fact is, 10 KHz is way above the crossover for those. Not even all the tweeters go all the way up, only one goes over 8K if they followed the II.5

http://www.stereophile.com/floorloudspeakers/genesis_ii5_loudspeaker_system/index.html

Good news is that the tweeters are a lot less $ but you have to get them off GAT.
mmcghee
7 posts
 
I have a pair of 350s and replaced the old ribbons with the newer BGs but still have the original drivers. The original drivers have a different design than the BGs. The front plane of the original is flat whereas the BGs are contoured. It is a distinct difference.
ngjockey
1,042 posts
 
It's also possible that one of the drivers got rewired in the wrong phase.
scvan OP
99 posts
 
Thanks for all the responses. I've determined the speaker with output that is lower has the original Carver driver in it. The other speaker has a newer BG driver. I will probably get around to "upgrading" the carver driver at sometime.
I think I will get more bang for my buck by doing some room tweaks to improve reflections and such.

Mmcghee, did you notice an improvement when you replace your ribbons with BG ribbons?
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