Frozen driver (MW6509)- Repairable?
mmadden28
Posts: 4,283
In my SDA-SRS 2's 
As I mentioned in the Wet Look thread, as I was cleaning the drivers, I discovered one was frozen (and no it didn't happen when I was cleaning it).
The driver was previously working and I hadn't moved them (the whole speaker) at all except to slide them a few inches this way and that adjusting for position.
I though something wasn't right lately with the sound and stage.
And when I say frozen solid-I mean it not budging at all.
Other than from transit, what causes this to happen? Is it simply glue failure?
I noticed that I was able to move/spin the magnet a bit and I figured well its shot anyway, might as well give it a try; and I pulled the magnet straight off. and now the driver is free again. I don't see any damage to the coils or anything. Measuring just over 9 ohms at the terminals.
So is there a chance in hell of repairing this myself? Or is reapplying the magnet the hard part?
Here's a couple shots:
In this shot the magnet appears off center, but these two still seem to be firmly glued--Should I try to separate and realign?
If this is possible to repair-what do I do?
I think gluing up all the other drivers is definitely on my short list of Holiday projects :rolleyes:
As I mentioned in the Wet Look thread, as I was cleaning the drivers, I discovered one was frozen (and no it didn't happen when I was cleaning it).
The driver was previously working and I hadn't moved them (the whole speaker) at all except to slide them a few inches this way and that adjusting for position.
I though something wasn't right lately with the sound and stage.
And when I say frozen solid-I mean it not budging at all.
Other than from transit, what causes this to happen? Is it simply glue failure?
I noticed that I was able to move/spin the magnet a bit and I figured well its shot anyway, might as well give it a try; and I pulled the magnet straight off. and now the driver is free again. I don't see any damage to the coils or anything. Measuring just over 9 ohms at the terminals.
So is there a chance in hell of repairing this myself? Or is reapplying the magnet the hard part?
Here's a couple shots:
In this shot the magnet appears off center, but these two still seem to be firmly glued--Should I try to separate and realign?
If this is possible to repair-what do I do?
I think gluing up all the other drivers is definitely on my short list of Holiday projects :rolleyes:
____________________
This post is a natural product. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects.
HT:Onkyo 805, Emotiva XPA-5, Mitsu 52" 1080p DLP / polkaudio RTi12, CSIa6, FXi3, uPro4K
2-chnl : Pio DV-46AV (SACD), Dodd ELP, Emotiva XPA-1s, XPA-2, Odyssey Khartago, LSi9, SDA-SRS 2 :cool:, SB Duet, MSB & Monarchy DACs, Yamaha PX3 TT, SAE Tuner...
Pool: Atrium 60's/45's
This post is a natural product. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects.
HT:Onkyo 805, Emotiva XPA-5, Mitsu 52" 1080p DLP / polkaudio RTi12, CSIa6, FXi3, uPro4K
2-chnl : Pio DV-46AV (SACD), Dodd ELP, Emotiva XPA-1s, XPA-2, Odyssey Khartago, LSi9, SDA-SRS 2 :cool:, SB Duet, MSB & Monarchy DACs, Yamaha PX3 TT, SAE Tuner...
Pool: Atrium 60's/45's
Post edited by mmadden28 on
Comments
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You can try realigning it with a jig, but I have had minimal luck doing so.
BenPlease. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
Thanks
Ben -
What kind of jig?____________________
This post is a natural product. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects.
HT:Onkyo 805, Emotiva XPA-5, Mitsu 52" 1080p DLP / polkaudio RTi12, CSIa6, FXi3, uPro4K
2-chnl : Pio DV-46AV (SACD), Dodd ELP, Emotiva XPA-1s, XPA-2, Odyssey Khartago, LSi9, SDA-SRS 2 :cool:, SB Duet, MSB & Monarchy DACs, Yamaha PX3 TT, SAE Tuner...
Pool: Atrium 60's/45's -
I don't know of anyone that has successfully repaired a MWxxxx driver with that problem.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 am wondering if the voice coil gets damaged from scraping the magnet after it shifts?Stan
Main 2ch:
Polk LSi15 (DB840 upgrade), Parasound: P/LD-1100, HCA-1000A; Denon: DVD-2910, DRM-800A; Benchmark DAC1, Monster HTS3600-MKII, Grado SR-225i; Technics SL-J2, Parasound PPH-100.
HT:
Marantz SR7010, Polk: RTA11TL (RDO198-1, XO and Damping Upgrades), S4, CS250, PSW110 , Marantz UD5005, Pioneer PL-530, Panasonic TC-P42S60
Other stuff:
Denon: DRA-835R, AVR-888, DCD-660, DRM-700A, DRR-780; Polk: S8, Monitor 5A, 5B, TSi100, RM7, PSW10 (DXi104 upgrade); Pioneer: CT-6R; Onkyo CP-1046F; Ortofon OM5E, Marantz: PM5004, CD5004, CDR-615; Parasound C/PT-600, HCA-800ii, Sony CDP-650ESD, Technics SA 5070, B&W DM601 -
I don't know of anyone that has successfully repaired a MWxxxx driver with that problem.
I have, and I remember another Polkie doing it, but after the price of making the jig, and the work the point is mute.Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
Thanks
Ben
