Polk LSi15 tweeter output issue
DMara
Posts: 1,434
I sold my last pair of LSi15 speakers locally a couple weeks ago after acquiring the new LSiM set and the new Usher Dancer Mini 2 Diamond DMD pair. The buyer came to my house to audition them and was happy with them, so he took them right away. This weekend he called me and let me know that sound was quite flat, he found out that both tweeters were quiet. I don't want to leave the guy hanging, so what would be the problem here, guys? I mean I can understand him frying one, but this is BOTH tweeters, how can both speakers receive the same issue at the same time? Is it the tweeters or the crossover boards? Any troubleshooting path he should follow? Unfortunately he doesn't have any other LSi15 to switch around parts to test it out.
Gears shared to both living room & bedroom:
Integra DHC-80.3 / Oppo BDP-105 / DirecTV HR24 DVR /APC S15blk PC-UPS
Living room:
LSiM707's / LSiM706c / LSiM702 F/X's / dual JL Audio Fathom F113's / Parasound Halo A51 / Panasonic 65" TC-P65VT50
Bedroom:
Usher Dancer Mini 2 Diamond DMD's / Logitech SB Touch / W4S STP-SE / W4S DAC-2 / W4S ST-1000 / Samsung 52" LN52B750
Other rooms:
Audioengine AP4's / GLOW Audio Sub One / audio-gd NFB-3 DAC / Audioengine N22
audio-gd NFB-10.2 / Denon AH-D7000
Integra DHC-80.3 / Oppo BDP-105 / DirecTV HR24 DVR /APC S15blk PC-UPS
Living room:
LSiM707's / LSiM706c / LSiM702 F/X's / dual JL Audio Fathom F113's / Parasound Halo A51 / Panasonic 65" TC-P65VT50
Bedroom:
Usher Dancer Mini 2 Diamond DMD's / Logitech SB Touch / W4S STP-SE / W4S DAC-2 / W4S ST-1000 / Samsung 52" LN52B750
Other rooms:
Audioengine AP4's / GLOW Audio Sub One / audio-gd NFB-3 DAC / Audioengine N22
audio-gd NFB-10.2 / Denon AH-D7000
Post edited by DMara on
Comments
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I'd have him visually check the resistor in the tweeter circuit. I know at one point it was weak point in the LSi series. It gets hot, cooks and opens up. It doesn't happen a lot, but seems to be an occasional issue. Are you sure he has the brass jumpers in place? Maybe have him check that first, tighten them, etc.
H9"Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul! -
For me local craigslist sales are usually as is. Once you audition them and they leave my residence any problems that occur is usually on the buyer unless I specify differently. For me it's easier this way. Club Polk members are different.
I'd have him pull the tweeters out and at low volumes hook them directly up to the amp or receiver to verify they're working. If so them I'd look at the crossovers.
Is he running them off a receiver? -
Thanks for the advice
I'll let him know. Gears shared to both living room & bedroom:
Integra DHC-80.3 / Oppo BDP-105 / DirecTV HR24 DVR /APC S15blk PC-UPS
Living room:
LSiM707's / LSiM706c / LSiM702 F/X's / dual JL Audio Fathom F113's / Parasound Halo A51 / Panasonic 65" TC-P65VT50
Bedroom:
Usher Dancer Mini 2 Diamond DMD's / Logitech SB Touch / W4S STP-SE / W4S DAC-2 / W4S ST-1000 / Samsung 52" LN52B750
Other rooms:
Audioengine AP4's / GLOW Audio Sub One / audio-gd NFB-3 DAC / Audioengine N22
audio-gd NFB-10.2 / Denon AH-D7000 -
For me local craigslist sales are usually as is. Once you audition them and they leave my residence any problems that occur is usually on the buyer unless I specify differently. For me it's easier this way. Club Polk members are different.
I know the deal's done; he's not a CP member, and it was done via CL. However he's a very nice guy, I just don't want to ignore him. I'm trying to help him figure out what the issue was.Gears shared to both living room & bedroom:
Integra DHC-80.3 / Oppo BDP-105 / DirecTV HR24 DVR /APC S15blk PC-UPS
Living room:
LSiM707's / LSiM706c / LSiM702 F/X's / dual JL Audio Fathom F113's / Parasound Halo A51 / Panasonic 65" TC-P65VT50
Bedroom:
Usher Dancer Mini 2 Diamond DMD's / Logitech SB Touch / W4S STP-SE / W4S DAC-2 / W4S ST-1000 / Samsung 52" LN52B750
Other rooms:
Audioengine AP4's / GLOW Audio Sub One / audio-gd NFB-3 DAC / Audioengine N22
audio-gd NFB-10.2 / Denon AH-D7000 -
For me local craigslist sales are usually as is. Once you audition them and they leave my residence any problems that occur is usually on the buyer unless I specify differently. For me it's easier this way. Club Polk members are different.
Remind to never buy anything from you
IMO, even on a Craigslist ad a couple days after the sale it wouldn't hurt to help him out with some recommendations if he's having trouble. But that's it, no refund or going over to his place, etc, etc or a lot of back and forth. It was worth a shot for him to ask you for advice, but if it doesn't fix his problem then he needs to persue it further on his own.
H9"Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul! -
Remind to never buy anything from you
IMO, even on a Craigslist ad a couple days after the sale it wouldn't hurt to help him out with some recommendations if he's having trouble. But that's it, no refund or going over to his place, etc, etc or a lot of back and forth. It was worth a shot for him to ask you for advice, but if it doesn't fix his problem then he needs to persue it further on his own.
H9
Why are you always on the attack...Calm down sometimes. Audio is suppose to be fun . -
I put a smylee, I also saw you said unless they are on the forum. I do agree with you up to a point. But I know if I was in the buyers shoes, I'd probably atleast ask since it's only been a couple of days. If he was a d*ck about it, then no. But perhaps we can atleast point the guy in the right direction.
H9"Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul! -
Sounds like he pulled a Nooshinjohn or powered them with a receiver."He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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Sounds like he pulled a Nooshinjohn or powered them with a receiver.
...an entry level one at that I'm betting. Then decided to crank on the volume knob and goodby tweets. Really need to find out what the guy was powering them with before offering up any help. You can give him polks CS # and he can buy some replacements on his own.HT SYSTEM-
Sony 850c 4k
Pioneer elite vhx 21
Sony 4k BRP
SVS SB-2000
Polk Sig. 20's
Polk FX500 surrounds
Cables-
Acoustic zen Satori speaker cables
Acoustic zen Matrix 2 IC's
Wireworld eclipse 7 ic's
Audio metallurgy ga-o digital cable
Kitchen
Sonos zp90
Grant Fidelity tube dac
B&k 1420
lsi 9's -
The guy removed the tweeters and tested them: they're fine. Trey (VR3), do you fix the crossover boards? If yes, I will ask him to send it to you. Let me know.Gears shared to both living room & bedroom:
Integra DHC-80.3 / Oppo BDP-105 / DirecTV HR24 DVR /APC S15blk PC-UPS
Living room:
LSiM707's / LSiM706c / LSiM702 F/X's / dual JL Audio Fathom F113's / Parasound Halo A51 / Panasonic 65" TC-P65VT50
Bedroom:
Usher Dancer Mini 2 Diamond DMD's / Logitech SB Touch / W4S STP-SE / W4S DAC-2 / W4S ST-1000 / Samsung 52" LN52B750
Other rooms:
Audioengine AP4's / GLOW Audio Sub One / audio-gd NFB-3 DAC / Audioengine N22
audio-gd NFB-10.2 / Denon AH-D7000 -
Responded to your Pm, Thanks!- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
