Hey guys this is my first post to the forum. I need help with community.
I have bought Sansui S65 speakers, (these are 4 way speaker with 12inch woofer and 1 mid and 2 tweeters) from garage sale, they are sounding really great and the drivers are in good condition but the issue was that the mdf was in bad condition. I mean the wood vinyl wrap was torn up and the actual body was damaged too die to moisture from long time.
But still sounded good.
Now call it my foolishness or i dont know what to call my self, to 1 speaker (right) which was damaged i have added 3mm mdf sheet over the original body so it dont get damaged and i dont have to make new speaker cabinet.
Now when i did test the speaker i feel like vocals are same in both but bass response from this (right speaker) is sounding Low compared to the left speaker. Now i had not done this test in past to compare bass in both speakers so dont know if this was issue or i have created an issue by adding layer of 3mm mdf sheet.
Now my question is, is it possible that bass get reduced with thickness of mdf? I feel like the left speaker has more deep base while the right one now has not so deep, not sure how to describe it.
Or this one was an original issue that i didn’t checked and its an issue with capacitors?
Even now i want to see if this was a extra panel effect or not either i have to remove the mdf sheet, which will be a huge task or add mdf sheet to the other speaker crossing finger that it will have no effect over bass response and i have to change capacitor or any other thing to left speaker.
What do you think guys please help…
I have bought Sansui S65 speakers, (these are 4 way speaker with 12inch woofer and 1 mid and 2 tweeters) from garage sale, they are sounding really great and the drivers are in good condition but the issue was that the mdf was in bad condition. I mean the wood vinyl wrap was torn up and the actual body was damaged too die to moisture from long time.
But still sounded good.
Now call it my foolishness or i dont know what to call my self, to 1 speaker (right) which was damaged i have added 3mm mdf sheet over the original body so it dont get damaged and i dont have to make new speaker cabinet.
Now when i did test the speaker i feel like vocals are same in both but bass response from this (right speaker) is sounding Low compared to the left speaker. Now i had not done this test in past to compare bass in both speakers so dont know if this was issue or i have created an issue by adding layer of 3mm mdf sheet.
Now my question is, is it possible that bass get reduced with thickness of mdf? I feel like the left speaker has more deep base while the right one now has not so deep, not sure how to describe it.
Or this one was an original issue that i didn’t checked and its an issue with capacitors?
Even now i want to see if this was a extra panel effect or not either i have to remove the mdf sheet, which will be a huge task or add mdf sheet to the other speaker crossing finger that it will have no effect over bass response and i have to change capacitor or any other thing to left speaker.
What do you think guys please help…
I can think of no reason that adding some extra cabinet wall thickness would reduce the bass.
Your speaker probably has a bass vent hole, yes? You did not cover this up? If you did, that would definitely affect the bass.
If the cabinet has moisture damage, it is possible that the woofer also has damage from moisture. I hope this is not true, but it is possible.
Your speaker probably has a bass vent hole, yes? You did not cover this up? If you did, that would definitely affect the bass.
If the cabinet has moisture damage, it is possible that the woofer also has damage from moisture. I hope this is not true, but it is possible.
I Know I am weird, but I always start these investigations with an impedance sweep. Room EQ wizard can do this with a jig or buy Dayton Audio DATS
Hi Jim
after your reply ive checked the woofer and it seems perfectly fine, i mean ive checked from inside as well there is no sign of damage or fungus.
I am not sure but there is a tone control switch next to super tweeter, its kind of broken, is it possible that that switch has to do with bass? I couldn’t find any resources online to see what it does so i am blank on it.
And yes these speakers have front port which are untouched. I have done anything there.
So in short the bass has nothing to do with increasing thickness of outer wall of speakers right?
Do you think the capacitors may be dried out?
Place something heavy on top of the left speaker (potted plant, workout weights, etc., that's somewhat heavier than the 3 mm lamination) to mimic the other's increased mass, stiffness to find out and if so, maybe can fine tune the necessary weight by ear to match them, then replicate with decorative plants, bricks/whatever.
All the answers make sense. It could be related to cabinet resonance. Old British speakers like the Spendor BC1 relied on thin cabinet walls capitalising on their resonance to provide more boomy bass. Kind of like the thin walls of a Cello providing deep rich tones base on resonance. Just an idea.
Either way, enjoy the nice find!
Either way, enjoy the nice find!
Thank you for the reply guys. I have added few images of speaker that i have added mdf to. And as you can see the damage on back of the body that was on sides as well so i thought instead of creating new box, i added new mdf to just support the current box.
but now what you guys suggest? Have i done mistake by adding bit of a MDF over the speakers? I mean if i play the both speakers currently, in normal case i dont think any one will get an idea that bass is not deep, but when i compare left right sliding amp knob i can feel that one is rumbly deeper and one is not so much like FLAT sounding bass. I feel so foolish i havent done this test... so either i dissemble the mdf panels, which will i think damage the body, or just take risk and add mdf to other speaker crossing finger that it will be as deep sounding as its right now and i find more solution.
By the way does anyone know if that has to do with Sound Balance knob on my speakers? I was thinking its for tweeter. I did not find much details about this speakers online so dont know.
but now what you guys suggest? Have i done mistake by adding bit of a MDF over the speakers? I mean if i play the both speakers currently, in normal case i dont think any one will get an idea that bass is not deep, but when i compare left right sliding amp knob i can feel that one is rumbly deeper and one is not so much like FLAT sounding bass. I feel so foolish i havent done this test... so either i dissemble the mdf panels, which will i think damage the body, or just take risk and add mdf to other speaker crossing finger that it will be as deep sounding as its right now and i find more solution.
By the way does anyone know if that has to do with Sound Balance knob on my speakers? I was thinking its for tweeter. I did not find much details about this speakers online so dont know.
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It is possibke that stiffening the enclosure resulted in the removal of a reasonance that nmnakes it seem like they produced bass.
I would expect the same if you did somethign simialr to a big Harbeth (30.2).
dave
I would expect the same if you did somethign simialr to a big Harbeth (30.2).
dave
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