Author Topic: What happened to my LS50? (Read 16380 times)

Di kaya the problem is with the cone part and not the tweeter assembly. I doubt lumuwag screw ng tweeter assembly to displace it e. Masikip pa sa virgin nung una kong tinanggal. Baka the cone is not returning to its flush position.

resident_evil · « **Reply #68 on:** Jan 17, 2017 at 08:29 PM »

Or worse, voice coil overheat.

Courage · « **Reply #69 on:** Jan 17, 2017 at 08:47 PM »

Quote from: resident_evil on Jan 17, 2017 at 08:23 PM

Di kaya the problem is with the cone part and not the tweeter assembly. I doubt lumuwag screw ng tweeter assembly to displace it e. Masikip pa sa virgin nung una kong tinanggal. Baka the cone is not returning to its flush position.

Mukang ganun nga atty. Mukang ok naman ang Tweeter

Look at how the cone of LS50 plays on this video.. Forward the video to 2:12 and you'll see

https://www.youtube.com/watch?v=wEB2CD1Xti8

resident_evil · « **Reply #70 on:** Jan 17, 2017 at 09:54 PM »

Good read:

http://sound.whsites.net/articles/speaker-failure.html

markcrenz · « **Reply #71 on:** Jan 17, 2017 at 10:44 PM »

Quote from: resident_evil on Jan 17, 2017 at 01:18 PM

Spider moves when cone is moved. Faint grating sound can be heard. No visible lumps or damage on voice coil. Tama ba? The voice is coil is the one na parang karton na cylindrical sa gitna ng toilet paper?

Quote from: resident_evil on Jan 17, 2017 at 08:23 PM

Di kaya the problem is with the cone part and not the tweeter assembly. I doubt lumuwag screw ng tweeter assembly to displace it e. Masikip pa sa virgin nung una kong tinanggal. Baka the cone is not returning to its flush position.

Woofer nga ang problem nyan, not the tweeter assembly. Malamang part of the winding kumalas at sumasabit na sa front plate kaya hindi na makabalik sa rest position. I just remembered a dead subwoofer whose cone looked sucked to almost full inward excursion, noong kalasin nakabusalsal na ang winding, trapped between front plate and pole piece.

Iparewind na yan.

resident_evil · « **Reply #72 on:** Jan 17, 2017 at 11:11 PM »

Muka nga bro marck. Kaya mo gawin?

Nelson de Leon · « **Reply #73 on:** Jan 18, 2017 at 12:05 AM »

Yun tweeter is suppose to be not moving when playing because para siyang bullet cone so malabo nga sa tweeter.

Sent from my ASUS_Z012D using Tapatalk

resident_evil · « **Reply #74 on:** Jan 18, 2017 at 12:24 PM »

Opinion sa Audiokarma nag bottom out. Change driver na daw. Ouch.

Courage · « **Reply #75 on:** Jan 18, 2017 at 12:32 PM »

Quote from: resident_evil on Jan 18, 2017 at 12:24 PM

Opinion sa Audiokarma nag bottom out. Change driver na daw. Ouch.

Ouch....

synchro_01 · « **Reply #76 on:** Jan 18, 2017 at 03:09 PM »

Looking at the bright side...the LS50 is available in singles directly through KEF internet retailer. No need to buy a pair plus if you do go this route you have a spare tweeter assembly, crossover, speaker box, terminals from your defective unit.

I wonder why the woofer gave up the ghost....it certainly wasnt over driven to the extremes with the amp. Manufacturing defect perhaps?

juanderer · « **Reply #77 on:** Jan 18, 2017 at 04:12 PM »

Quote from: resident_evil on Jan 18, 2017 at 12:24 PM

Opinion sa Audiokarma nag bottom out. Change driver na daw. Ouch.

ano ibig sabihin ng bottom out sir?

resident_evil · « **Reply #78 on:** Jan 18, 2017 at 06:28 PM »

I think the cylinder holding the voice coil smacked the bottom plate because of too much exertion. Kaya na deform siguro. Over driven malamang. Perhaps the experts can chime in.

mbtorn · « **Reply #79 on:** Jan 18, 2017 at 07:01 PM »

Quote from: synchro_01 on Jan 18, 2017 at 03:09 PM

Looking at the bright side...the LS50 is available in singles directly through KEF internet retailer. No need to buy a pair plus if you do go this route you have a spare tweeter assembly, crossover, speaker box, terminals from your defective unit.

I wonder why the woofer gave up the ghost....it certainly wasnt over driven to the extremes with the amp. Manufacturing defect perhaps?

https://www.kefdirect.com/ls50-single-center-speaker.html

Or you can email KEF directly and ask for a replacement driver which may cost around $300.

markcrenz · « **Reply #80 on:** Jan 18, 2017 at 07:03 PM »

pwede rin adhesive failure lang.

Quote

Malamang part of the winding kumalas at sumasabit na sa front plate

Tempter · « **Reply #81 on:** Jan 18, 2017 at 07:08 PM »

Quote from: mbtorn on Jan 18, 2017 at 07:01 PM

https://www.kefdirect.com/ls50-single-center-speaker.html

Or you can email KEF directly and ask for a replacement driver which may cost around $300.

Kakalula!!!

resident_evil · « **Reply #82 on:** Jan 18, 2017 at 07:15 PM »

Yun din. Pwede nag melt adhesive. Gusto mo tingnan mark?

resident_evil · « **Reply #83 on:** Jan 18, 2017 at 07:15 PM »

Ok sana mag order kaso shipping cost pa malupit.

mbtorn · « **Reply #84 on:** Jan 18, 2017 at 07:25 PM »

ito mas mura:

http://www.canuckaudiomart.com/details/649325788-kef-ls50-single-speaker-for-center-channel/images/1424137/

that's about US$ 460.

Use Canada Post/USPS to nearest JacPlus office in the US.

CoolTOYZPH · « **Reply #85 on:** Jan 18, 2017 at 07:40 PM »

Being part of the design team of the speaker, Anthony Lueterio may be able to help.
He has been inactive at PinoyDvD but no harm in trying to call him for the repair.

resident_evil · « **Reply #86 on:** Jan 18, 2017 at 08:03 PM »

You have his contact details cool?

resident_evil · « **Reply #87 on:** Jan 18, 2017 at 08:04 PM »

Meron ako lbc shippingcart which I use for amazon etc pero mahal pa rin.

ndotcom · « **Reply #88 on:** Jan 18, 2017 at 08:41 PM »

If I may sir, nacompare mo na ba sa working or good na driver yung may sira. Dapat bago binaklas ay compare na muna sa good para alam kung ano dapat ibalik or ayusing sira, baka kasi sa physical na look palang eh makita na ang dapat iadjust or gawin. Yun ay kung ok lang sayo na buksan din yung good speaker. Suggestion lang po, please proceed at your own risk.

shoktongxxx · « **Reply #89 on:** Jan 18, 2017 at 08:56 PM »

Quote from: resident_evil on Jan 18, 2017 at 12:24 PM

Opinion sa Audiokarma nag bottom out. Change driver na daw. Ouch.

What?! saklap naman nyan chief.