Would you share the resistance of RD6515-2 drivers
nemohm
Posts: 19
Hello ALL,
First time posting, just registered. I've been looking for info her and enjoying quite a few posts for some time.
My hope is to have my dead RTi150 back to life. The tweeters are shot, PCS suggested BD 0132-W (8 ohm) as replacement. Neither model is to be found.
The RD6515-2 are pressed in the plastic bezel/plate, my efforts to push the front with the dome out of the plate failed so far. There must be a trick here?
Anyway, changing the dome/diaphragm is one thing, second option is to replace the tweeters with some with close specs. It might require modifications on the cabinet.
So, what is the resistance/DC on the original tweeter?
I guess it should be 4 ohms in order to stay in line with the rest.
(3x woofers, 1.3 ohm each in series, 1x mid, 3.4 ohm).
Much appreciated.
First time posting, just registered. I've been looking for info her and enjoying quite a few posts for some time.
My hope is to have my dead RTi150 back to life. The tweeters are shot, PCS suggested BD 0132-W (8 ohm) as replacement. Neither model is to be found.
The RD6515-2 are pressed in the plastic bezel/plate, my efforts to push the front with the dome out of the plate failed so far. There must be a trick here?
Anyway, changing the dome/diaphragm is one thing, second option is to replace the tweeters with some with close specs. It might require modifications on the cabinet.
So, what is the resistance/DC on the original tweeter?
I guess it should be 4 ohms in order to stay in line with the rest.
(3x woofers, 1.3 ohm each in series, 1x mid, 3.4 ohm).
Much appreciated.
Answers
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Hello!
Welcome to Polk's forum. I'll ask a friend at Polk if he has any of the tweeter's specifications. The sensitivity would be important to know. -
Thank you.
PCS found no data in their system.
My hope is there is still somebody having RTi150..
BTW the woofers Re is a weird one.
Would this be explained with specific inductance or else?
What makes these speakers such a power hungry hogs? Are there other Polk's speakers engineered that way?
Too many questions, sorry.
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Here is the tweeter's sensitivity:
Here is the impedance curve:
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SL6511 supposed to be a Polks designarion correct?
What is Vifa's model?
Much helpfull. The search for sl made a world of difference..
Thx -
SL6511 is the tweeter's part number, Vifa is a speaker component manufacturer. Glad the information was helpful.
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SL6511 are 6 ohm drivers (description on eBay, found a pic of a box with " BD032W(SL6511)" , 8 ohm .
Go figure..
Could someone connfirm SL6511 is a 2 parts driver (screw in magnet)?
What is the power rating, please? -
"Could someone connfirm SL6511 is a 2 parts driver (screw in magnet)?
Sorry, I'm not sure what this means? -
With a twist the magnet separates from the dome/coil . Front driver's plate stays pressed within the bezel.
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The complete tweeter needs to be removed from the bezel. If you remove the magnet from the dome with the coil you risk not getting it positioned correctly or damaging the coil. To separate the tweeter from the from the bezel there is a ring molded into the back of the bezel that holds the tweeter's faceplate. There should be a gap in this ring and if you put the blade of a screwdriver in this gap under the faceplate and lift and twist the complete tweeter will come away.
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As the drivers are shot (still puzzled what lead to having them both shot simultaneously) there is no point to spare the dome/coil. Will try to disassemble and let you know. Perhaps magnet's separation is a manufactures' provision for repairs. Chinese comrades have numerous dome/coils available, but with little info on specs. 30W the most, not sure it is enough.
Anyway there is the link to some pic here:
https://www.worthpoint.com/worthopedia/polk-sl6511-genuine-polk-replacement-110794001
https://worthpoint.com/worthopedia/polk-sl6511-genuine-polk-replacement-110794001
Thank you arain, Much appreciated! -
No problem, glad to help. It is probably best to use replacement SL6511 tweeters from the eBay seller. Most of the time speakers are damaged from excessive distortion caused by overdriving the receiver or amplifier that is powering them.
