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#1
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Optimus LX5 mods.
Thanks
The SEAS unit I used (as reccomended in Larry and Eric's website, was an MP14 RCY 5" mid/bass unit. It too was a straight swap for the original and I have not changed the crossover either. Do you know what SEAS unit you used ? "JTHANSFORD" wrote in message ... This relates to the Optimus Pro LX5 loudspeaker (the one with the Linaeum ribbon tweeter). I swapped the bass driver for a SEAS driver in a pair of LX5's some time back. I remember having questions about which of two different SEAS drivers to use but got one that I thought had specs closer to the original box. It was a drop-in fit and worked o.k., but I lost interest as I was just buying some of the now-extinct Michaura speakers. I still have the modified LX5's as well as a stock pair. If I get some time, I will test the out and see how they compare. But to answer your question, they still has some bass after the conversion. I didn't change the cross-overs at all, and just added a bit more fiferfill to each box. Joe Hansford |
#2
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Optimus LX5 mods.
Do you know what SEAS unit you used ?
Yes, I used the SEAS P14 5" driver, which is all that Madisound had available when I ordered. The MP14 RCY that you are using was the one I wanted since the freq. response looked flatter. I compared my modified LX5's with a stock pair today and find the same thing you report--no bass to speak of. I assume that means some changes are needed to the crossover circuit. The stock 5" driver that RS used is a better quality unit than I expected, upon inspection, but I don't have specs. Joe Hansford |
#3
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Optimus LX5 mods.
Try posting to the following links/newsgroups for more help, if you
haven't done so already: 1. http://www.pesupport.com/cgi-bin/config.pl (this is also where I bought my crossover parts for my modded lx5) 2. www.audioreview.com (try looking up the reviews for the LX5 and then emailing the users that did the modifications) 3. www.audioasylum.com I did the lx5 modifications but with the original stock driver, not the SEAS. I did notice less bass, but nothing significant like yours. Assuming your wiring is correct (polarity, solder connections, etc.), I'd suspect that implementing the crossover would help. It's also a possibility that your SEAS drivers are defective. For my modifications, my goodness, the midrange truly cleared up and made voices much more audible and music warmer sounding. Very nice indeed. Good luck with you troubleshooting and I do hope you complete your modifications with excellent results. One more suggestion, get a nice powered subwoofer if you don't have one. Here's an excellent steal: http://www.partsexpress.com/pe/pshow...=300-739&DID=7, which I have. Amazing subwoofer bang for the buck. And compliments the LX5 very well. You'd be impressed at how low and clean this baby goes. If you have any other questions, you can email me directly. Good luck, welski ******************************** (JTHANSFORD) wrote in message ... Do you know what SEAS unit you used ? Yes, I used the SEAS P14 5" driver, which is all that Madisound had available when I ordered. The MP14 RCY that you are using was the one I wanted since the freq. response looked flatter. I compared my modified LX5's with a stock pair today and find the same thing you report--no bass to speak of. I assume that means some changes are needed to the crossover circuit. The stock 5" driver that RS used is a better quality unit than I expected, upon inspection, but I don't have specs. Joe Hansford |
#4
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Optimus LX5 mods.
One thing I forgot to note. Remember that the tweeter is wired out of
phase with the woofer. The tweeter's blue wire is really positive, even those it was connected to the negative terminal in the original stock setup. I would strongly suggest this to be your culprit (even though you said you have the polarity correct). I think this may be the reason for my lack of bass as well that I mentioned, which my sub ended up filling in. I'll take my speakers apart tomorrow and verify if my connections are correct. Wel "Stephen Judge" wrote in message ... Thanks for the response. The SEAS drivers have been checked out Ok and polarity is fine etc. Also have a REL subwoofer which I must admit has been difficult to integrate with the LX5s. However works much better with my hybrid electrostatics wgich go much lower anyway. I'll try the suggestions you have given - if not time to sell the SEAS ! Stephen "Wel" wrote in message om... Try posting to the following links/newsgroups for more help, if you haven't done so already: 1. http://www.pesupport.com/cgi-bin/config.pl (this is also where I bought my crossover parts for my modded lx5) 2. www.audioreview.com (try looking up the reviews for the LX5 and then emailing the users that did the modifications) 3. www.audioasylum.com I did the lx5 modifications but with the original stock driver, not the SEAS. I did notice less bass, but nothing significant like yours. Assuming your wiring is correct (polarity, solder connections, etc.), I'd suspect that implementing the crossover would help. It's also a possibility that your SEAS drivers are defective. For my modifications, my goodness, the midrange truly cleared up and made voices much more audible and music warmer sounding. Very nice indeed. Good luck with you troubleshooting and I do hope you complete your modifications with excellent results. One more suggestion, get a nice powered subwoofer if you don't have one. Here's an excellent steal: http://www.partsexpress.com/pe/pshow...=300-739&DID=7, which I have. Amazing subwoofer bang for the buck. And compliments the LX5 very well. You'd be impressed at how low and clean this baby goes. If you have any other questions, you can email me directly. Good luck, welski ******************************** (JTHANSFORD) wrote in message ... Do you know what SEAS unit you used ? Yes, I used the SEAS P14 5" driver, which is all that Madisound had available when I ordered. The MP14 RCY that you are using was the one I wanted since the freq. response looked flatter. I compared my modified LX5's with a stock pair today and find the same thing you report--no bass to speak of. I assume that means some changes are needed to the crossover circuit. The stock 5" driver that RS used is a better quality unit than I expected, upon inspection, but I don't have specs. Joe Hansford |
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