707 crossovers in a 705
jghglofer
Posts: 100
I happen to get my hands on a set of 707 crossovers and was wondering how they would fit in a pair of 705's. I just don't know if they match up
Comments
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The 705's have a 2800Hz & 100Hz crossover w/ 5" midrange & 5"x7" woofers.
The 707's have a 3000Hz & 100Hz crossover w/ 6.5" midrange & 6"x9" woofers
Given that the speakers are still in production and parts are available from Polk I guess I don't see the point. Whats wrong with your LSiM 705 crossovers? Or are you looking to keep the original crossovers in tack yet have a second set of crossovers to mod? I guess you could use the 707 boards or make your own. Are you planning to build with better components?2.2 Office Setup | LG 29UB55 21:9 UltraWide | HP Probook 630 G8 | Dell Latitude | Cabasse Stream Amp 100 | Boston Acoustics VS 240 | AUDIORAX Desk Stands | Mirage Omni S8 sub1 | Mirage Omni S8 Sub2 -
Different circuits designed specifically for each model, so no. If you want to improve the 705's upgrade the crossover components.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
I like the 705's just the way they are. but got a set of 707 boards and was just wondering. maybe I will start me a project.
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When you have a solution for a problem that doesn't exist..."Some people find it easier to be conceited rather than correct."
"Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip -
I like the 705's just the way they are. but got a set of 707 boards and was just wondering. maybe I will start me a project.
What exactly are you wondering? The 707s don't have better components, just different specs designed for different drivers and cabinet volume. follow F1NUT's advice...
But hey they are your speakers and your time and money, have at it!Living Room 2.2: Usher BE-718 "tiny dancers"; Dual DIY Dayton audio RSS210HF-4 Subs with Dayton SPA-250 amps; Arcam SA30; Musical Fidelity A308; Sony UBP-x1000es
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I like the 705's just the way they are. but got a set of 707 boards and was just wondering. maybe I will start me a project.
The best thing to do is to find a schematic but i don't think they were ever released. So, compare the 705 to the 707 crossover side by side to see what the component value differences are. You might have to measure the inductors as they might not be labeled like the caps, and resistors. Both speakers/crossovers seem to use the same topology so there might be minor component changes. However, there could be some changes here and there that one has and the other does not. You can modify the components on the 707 board to the same values as the 705.
Here are pics of the 705 crossovers.
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@WLDock yes your right I did leave the table with out answering. my question was would the 707 boards sound any better in the 705's and that question was answered.
I am not going to mod the 705's like I said I like them just the way they are. the project will be to use these 707 boards in a build. -
@WLDock yes your right I did leave the table with out answering. my question was would the 707 boards sound any better in the 705's and that question was answered.
I am not going to mod the 705's like I said I like them just the way they are. the project will be to use these 707 boards in a build.
Did you get the boards for free or super cheap or something? Because there are tons of DIY project plans out there. Money could be better spent towards the correct components for a given project.
https://www.audioholics.com/diy-audio/building-a-do-it-yourself-loudspeaker-design
https://www.popularmechanics.com/technology/audio/how-to/a3485/build-your-own-speakers/
https://www.instructables.com/id/How-to-Build-Custom-Speakers/
http://techtalk.parts-express.com/forum/tech-talk-forum/38661-the-speaker-building-bible
https://www.amazon.com/Loudspeaker-Design-Cookbook-Vance-Dickason/dp/1882580338/ref=pd_lpo_sbs_14_t_1?_encoding=UTF8&psc=1&refRID=YASC3M2YHPZ1PFQMB7ZY
https://www.amazon.com/Speaker-Building-201-Ray-Alden/dp/1882580451
http://projectgallery.parts-express.com/
https://www.diyaudioandvideo.com/Guide/BuildSpeaker/
http://speakerdesignworks.com/index_page_2.html
https://meniscusaudio.com/product-category/speaker-kits/
http://www.zaphaudio.com/
https://www.madisoundspeakerstore.com/welcome.php
https://www.css-audio.com/
http://www.troelsgravesen.dk/Diy_Loudspeaker_Projects.htm
https://www.youtube.com/channel/UCOuow_HIYmeaIqi42zVs3qg
https://www.diyaudio.com/forums/loudspeakers/
http://www.htguide.com/forum/forumdisplay.php?6-Mission-Possible-DIY
https://www.hometheatershack.com/forums/diy-speakers/
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@WLDock I got them free
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@WLDock I got them free
Nothing like free. Maybe you can find some cheap driver from the speaker buyout section at Parts Express that might work with those crossover points. Then, design a cabinet and build and fine tune. Might make for a fun garage, basement, etc speaker project.
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@jghglofer
I know it has been a couple of years but by any chance do you still have the 707 crossovers and would you be willing to sell them?2 Channel
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