Hi folks, new member here with some questions on my latest acquisition, a pair of Polk srs2.3tl, These speakers sorta found me, I was answering an add for a pair of adcom amps, at one point while i was asking him about the amps, I asked him what speakers he had run the amps on, he said he had run them on a large pair of Polks but had blown some of the drivers in the speakers, and basically quit using the amps and speakers some years back, we settled on a price on the amps and set up a time to meet.
When I got to his place he met me out front of his home and had me fallow him around to the outside entrance to his basement, I expected him to have them hooked to something for me to audition them, but he just had them setting on his work bench covered in years of dust he had not even taken the time to wipe off, this type of thing still amazes me especially with what he was expecting to get out of them, I told him there was no way I was buying the amps without making sure they worked properly, he replied ok grab one of the amps and fallow me.
We walked out of the basement and around to the front door of his home and walked into the living room, it was not hard to miss the two elephants in the room, I then remembered our earlier conversation and him mentioning the large Polks he used the amps on, and hear they were! he told me he had not used them in some time and that although they had some bad drivers they should work well enough to be able to let me know if the amps worked ok, I hooked one amp up at a time to make sure they worked properly, but as I was testing them and listening to them I was thinking to myself, damn these speakers sound good, and deserve to be repaired and brought back to useable condition so someone could enjoy them, and that someone was me!!!
I asked him if by chance he was interested in selling the speakers as well, he told me make an offer, we haggled back and forth a bit and after some negotiation he reluctantly agreed to part with them and we shook hands, only to have his wife say you sure you want to sell those! he then started back peddling and said he couldn't sell them! I was disappointed to say the least, we had shook hands! but i understood, I was there for the amps not the speakers which he obviously hadn't thought of selling, so i told him not a problem that I understood, paid for the amps and said I was going to carry them out to the van, but if he changed his mind the offer stood, as I was loading the last amp in the van and getting ready to leave, he came out and told me if I wanted them for what we agreed on they were mine!
So I am now the very proud owner of these large and in charge pair of speakers, but as i mentioned earlier there are some issues with these-
four blown tweeters and four blown mid-bass drivers, the tweeters seem to be a common issue, but he midbass drivers are puzzling as they were the ones by themselves listed as the presence drivers that work with the sda feature, I am wondering if by chance they had been wired out of phase causing the damage, I have a local speaker repair guy that has a good reputation that is going to replace the voice coils on the mid-bass drivers, I am going to order the new recommended silk dome tweeters from polk in pairs as I can afford them.
I have a couple questions I am hoping the good folks on here might be able to answer-
1) I already have a nice pair of sl2500 silk dome tweeters from from a pair of polk model 7s, I swapped out two of the blown ones and put the sl2500 as the top set, and put the only working original pair as the 2nd set, unhooked and taped off the leads on the bottom ones for now, I was figuring I would add the new tweeters as I could afford them putting the new ones at the top, the sl2500 tweeters in the middle, and the two tired originals at the bottom till I pu a 2nd pair of the new replacements, then I will put the sl2500 on the bottom, are the sl2500 tweeters an ok alternative to the new ones polk is offering as replacements?
I would have used the two mid bass drivers but the ones from the model 7s are 3ohm and the ones from the 2.3 are basically 6 ohm
2)the prior owner ran the two adcom gfa555 amps in bridged mode, which from what info I can find has these amps putting out around 800 watts to each speaker at the 4ohms they are rated at, and might explain the blown drivers, on the other hand some of the stories he told me might indicate a heavy volume hand might have contributed as well, I am wondering if it would be best to do a vertical biamp instead, using one amp for the top end one amp for the bottom end, I have several pre amps that are designed to be able to do this, this would put the wattage from the amps in stereo mode at 350 wpc, putting 700 watts total to each speaker instead of 800 in bridged mode, and should be an easier load on the amps, one concern I have with the vertical biamp is that I will be putting 350 watts to the top end whereas in a horizontal bridged mode biamp, I am thinking the majority of the power would be taken up with the bottom end, if that makes sense.
I appreciate any help and info others with experience in this can help me with. Thanks Chris