|
|
Post by geebo on Jan 19, 2013 15:03:19 GMT -5
Does your TV have an stereo RCA audio output. Maybe you can try connecting straight it to the amp and bypass the receiver altogether to determine if its the receiver. You may have a variable audio output. Just make sure the TV audio is way down before trying it.
|
|
g42
Minor Hero
Posts: 29
|
Post by g42 on Jan 19, 2013 15:09:08 GMT -5
Did a factory reset on the Yamaha, and no change.
|
|
g42
Minor Hero
Posts: 29
|
Post by g42 on Jan 19, 2013 15:15:06 GMT -5
Does your TV have an stereo RCA audio output. Maybe you can try connecting straight it to the amp and bypass the receiver altogether to determine if its the receiver. You may have a variable audio output. Just make sure the TV audio is way down before trying it. That's an interesting suggestion I never even thought of. I gotta go do some errands but I will definitley try that later today. |
|
|
|
Post by AudioHTIT on Jan 19, 2013 15:23:53 GMT -5
Well you've had lots of suggestions, but if you've moved the speaker wire from a center speaker that sounds good to a L/R speaker and it now sounds bad, then it sure sounds like the speakers are the problem. If you *gently* push the woofer/midrange driver in and let it come back out do you feel any scraping? (use both hands to get even pressure all around). If you feel scraping then the voice coil may have overheated and warped.
|
|
g42
Minor Hero
Posts: 29
|
Post by g42 on Jan 19, 2013 16:37:03 GMT -5
Well you've had lots of suggestions, but if you've moved the speaker wire from a center speaker that sounds good to a L/R speaker and it now sounds bad, then it sure sounds like the speakers are the problem. If you *gently* push the woofer/midrange driver in and let it come back out do you feel any scraping? (use both hands to get even pressure all around). If you feel scraping then the voice coil may have overheated and warped. No scraping whatsoever. |
|
|
|
Post by solarrdadd on Jan 19, 2013 16:43:23 GMT -5
Well you've had lots of suggestions, but if you've moved the speaker wire from a center speaker that sounds good to a L/R speaker and it now sounds bad, then it sure sounds like the speakers are the problem. If you *gently* push the woofer/midrange driver in and let it come back out do you feel any scraping? (use both hands to get even pressure all around). If you feel scraping then the voice coil may have overheated and warped. No scraping whatsoever. you can check for movement of your woofers by using a 9v battery; the ones that are used for smoke detectors. if you disconnect the speakers from the amp (leaving the speaker cable connected to the speaker) touch the positive and negative ends of the cable to the respective terminals wired to the speaker and you should see the driver move in and out. do this for each speaker you have that is in question. if you don't hear a little thump and see the driver move then it's likely that the driver is damaged or the crossover is damaged. keep one end connected to the battery and lift and tap the other wire and you should see the woofer move in and out and here a thump (like tapping an open mike) if you don't see or hear anything, well..... that's the quick test i've done when buying speakers from either craigs or a pawn shop and they have no gear to connect them to. at least i can see movement and hear that thump. |
|
reaper60
Sensei
Music Makes Me Happy!
Posts: 505
|
Post by reaper60 on Jan 20, 2013 0:16:28 GMT -5
So I know I'm late to the party but,... why not hook your front channels up to another amp or directly to your receiver (assuming it has an amplifier section) and see if they play normally. This removes the speaker as the issue, or confirms it. Assuming it works hooked up to the receivers internal amp and there is no issue you are down to just interconnects (RCA's) or the XPA-5. BTW, I'm not familiar with the Polk RTiA7, are they 4 ohm speakers? Maybe they drop very low in impedance during their normal play (like 1 ohm as some electrostats do) and that caused an issue. Definitely sounds funny though as I have never once had an issue with an Emo amp. I even forgot to connect a speaker to the other end of the amp at one point in my haste and it just clicked a protection circuit, blinked, and after a power cycle went right back to pumpin out the tunes.
|
|
|
|
Post by broncsrule21 on Jan 20, 2013 1:10:37 GMT -5
So I know I'm late to the party but,... why not hook your front channels up to another amp or directly to your receiver (assuming it has an amplifier section) and see if they play normally. This removes the speaker as the issue, or confirms it. Assuming it works hooked up to the receivers internal amp and there is no issue you are down to just interconnects (RCA's) or the XPA-5. BTW, I'm not familiar with the Polk RTiA7, are they 4 ohm speakers? Maybe they drop very low in impedance during their normal play (like 1 ohm as some electrostats do) and that caused an issue. Definitely sounds funny though as I have never once had an issue with an Emo amp. I even forgot to connect a speaker to the other end of the amp at one point in my haste and it just clicked a protection circuit, blinked, and after a power cycle went right back to pumpin out the tunes. Rtia7 is a 8ohm speaker. |
|
|
|
Post by rocky500 on Jan 20, 2013 6:14:15 GMT -5
|
|
|
|
Post by Dan Laufman on Jan 20, 2013 9:20:24 GMT -5
My two cents...
I do not think it is the amplifier.
I think the problem is just in the speaker connection.
Make sure the inputs to the main speakers are hooked up correctly, and make sire the bi-amp connection links are securely tightened. Sometimes they look like they are OK, but they are not actually connected. This has happened to me many times.
Maybe you can send us a picture of your speaker as it is currently connected... ??
I can't believe you blew two woofer at once, without lots of other drama.
It's gong to be something very simple.
Don't give up yet.
Cheers,
Big Dan
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Jan 20, 2013 9:25:56 GMT -5
I don't know if you tried this but, if you have the center channel working fine, unhook that speaker and hook up your left or right speaker to the center channel of the amp. If you speaker is blown, then you will have the same result with no sound.
Dan is right, if there was an issue with the amp, it would have gone into protection mode.
|
|
|
|
Post by djoel on Jan 20, 2013 11:33:43 GMT -5
There's nothing like visual aid, so I would take pics of the rear of the speakers just like Big Dan said.
Good luck...
DJoel
|
|
|
|
Post by The Mad Norseman on Jan 20, 2013 11:58:46 GMT -5
My two cents... I do not think it is the amplifier. I think the problem is just in the speaker connection. Make sure the inputs to the main speakers are hooked up correctly, and make sire the bi-amp connection links are securely tightened. Sometimes they look like they are OK, but they are not actually connected. This has happened to me many times. Maybe you can send us a picture of your speaker as it is currently connected... ?? I can't believe you blew two woofer at once, without lots of other drama. It's gong to be something very simple. Don't give up yet. Cheers, Big Dan Also, be sure to check your Yamaha AVR's internal setting - is it set for Bi-amp, or normal L/F output? (Consult the manual). If set for Bi-amp, re-set for normal, then make sure your speakers have the connecting bars in place (as shown in the photo posted above) and try again. Since you're getting no woofer action out of your L/R mains, its suggests either your receiver's bi-amp setting is on, or an absence of the speaker terminal's connecting bars, or both! Good luck! |
|
g42
Minor Hero
Posts: 29
|
Post by g42 on Jan 20, 2013 22:50:15 GMT -5
Looks exactly like that. Only two leads to each speaker, not biwired/biamped. |
|
g42
Minor Hero
Posts: 29
|
Post by g42 on Jan 20, 2013 22:52:24 GMT -5
My two cents... I do not think it is the amplifier. I think the problem is just in the speaker connection. Make sure the inputs to the main speakers are hooked up correctly, and make sire the bi-amp connection links are securely tightened. Sometimes they look like they are OK, but they are not actually connected. This has happened to me many times. Maybe you can send us a picture of your speaker as it is currently connected... ?? I can't believe you blew two woofer at once, without lots of other drama. It's gong to be something very simple. Don't give up yet. Cheers, Big Dan I won't bother with a pic cause I've since disconnected everything in my various troubleshooting schemes. |
|
g42
Minor Hero
Posts: 29
|
Post by g42 on Jan 20, 2013 22:54:48 GMT -5
I don't have the receiver set to bi-amp, I've double,triple, and quadruple checked that. The connector bars on the speaker terminals are definitely in place.
I removed one woofer from its enclosure and wired it directly to the receiver at very lower volume. The woofer played normally.
|
|
g42
Minor Hero
Posts: 29
|
Post by g42 on Jan 20, 2013 23:16:18 GMT -5
Opened up the back of the speaker and this is what I found. Attachments:
|
|
KeithL
Administrator 
Posts: 10,261
|
Post by KeithL on Jan 20, 2013 23:52:29 GMT -5
I don't see anything especially suspicious in the picture.
The brown goo on that white part near the bottom is probably just glue securing it in place.
I'd have to agree with its sounding like there's something up with the receiver.
If you have any other source with a volume control (even an iPod or other little player), try connecting it to each channel of the amp, one after the other... with the speakers hooked up. Start with the volume WAY DOWN, and turn the amp off each time before you move the input connection. If each channel plays normally that way, then it pretty well rules out the amp, the speakers, and the speaker wires.
|
|
g42
Minor Hero
Posts: 29
|
Post by g42 on Jan 21, 2013 0:11:02 GMT -5
I'm thinking that might be something fried, cause here's what a similar piece from the same speaker looks like. Attachments:
|
|
|
|
Post by aussie on Jan 21, 2013 0:35:15 GMT -5
Looks to me like a ceramic resistor is fried, board location would be R1 or R2 I think on those from memory. Whats the other speakers crosover look like, I get what everyone else is saying because it's extremely strange to have both speakers go at the same time.
Are the speakers under warranty? But yeah looking at that image I reckon that ceramic resistor is cooked. I think I have heard of this exact same thing happening before as well.
|
|
