001 Posted January 22, 2022 Share Posted January 22, 2022 1 hour ago, Defacto said: Umm, that is 80/100 on the Onkyo amp. Seems to me that shouldn't shut the amp down under normal circumstances. Trim level I do not recall seeing or setting? I have no idea to to change from relative to absolute volume either, sorry if you have a solder station & have done some soldering before... its very easy to replace capacitors on these boards. for those crites prices for full kit or to even send in yours i would just try & do it yourself & save a ton of money. the caps you use are up to you & your budget, the daytons at parts express are only a few bucks each & theres other brands about the same price or even cheaper, bob used to recommend ERSE caps for budget builds & they are just as good as daytons for a lot cheaper. i've used them in quite a few speakers, klipsch & other brands with great results. or use the jem brand some on here prefer. as for the onkyo shutting down, if its an older model it very well could be the cause & not the speakers, ive had a couple early to mid 2000 onkyos fail all on their own, they are known to have issues & 2 of mine started cutting out at higher volumes then eventually wouldnt produce any sound. the speaker ohm rating can contribute to the issue so maybe the fortes with big 12" woofers are drawing more power than the other ones? based on pics & your explanation of what you've done theres a good chance it isnt the speaker & its the receiver itself. if you have another receiver maybe try swapping it out & play at the same general volume & see what happens. i even had a late 90's onkyo i sold to a friend after many years of trouble free use myself... within 6 months of driving it very hard with A & B channels (4, 8 ohm speakers) it literally blew up with tons of orange'ish smoke billowing out of the case, almost caught on fire! ive used onkyo for many years & for the most part they are very good for the price, but they can have issues & certain models of the era i mentioned are known to crap out. best of luck figuring it out. Quote Link to comment Share on other sites More sharing options...
captainbeefheart Posted January 22, 2022 Share Posted January 22, 2022 What do you have for resistance measured directly at the woofer bypassing the crossover network? Are the woofers stock? I am trying to figure out a way for you to test everything with limited test equipment. It would be nice if you could do a frequency vs impedance sweep of the speakers. You can download some free software like Arta and a signal generator app for your phone and do a sweep. Quote Link to comment Share on other sites More sharing options...
OO1 Posted January 22, 2022 Share Posted January 22, 2022 7 hours ago, Defacto said: I welcome suggestions on how to proceed. At this point, my best plan is to replace one R26F with a Forte II, one at a time, and turn the volume to 80. Yep , but only hook up 2 speakers at once , to match the Forte II Hookup , 1 speaker at a time would not duplicate the same problem - if the amp shuts at 80 , then it's the Amplifier , and we can rule out the Forte II and the crossovers - Quote Link to comment Share on other sites More sharing options...
captainbeefheart Posted January 22, 2022 Share Posted January 22, 2022 4 minutes ago, 001 said: if the amp shuts at 80 , then it's the Amplifier , and we can rule out the Forte II and the crossovers I thought he already said the amplifier can play past '80' with the R26F speakers with no issues. 1 Quote Link to comment Share on other sites More sharing options...
OO1 Posted January 22, 2022 Share Posted January 22, 2022 37 minutes ago, captainbeefheart said: I thought he already said the amplifier can play past '80' with the R26F speakers with no issues. This should not be a problem at all to re-confirm just to be sure , but the test would have to be done with 2 speakers versus a single we could then rule out the wiring , the amplifier , and the woofers of the Forte II ( DCR is 3.7 Ohms /normal ) Quote Link to comment Share on other sites More sharing options...
Defacto Posted January 22, 2022 Author Share Posted January 22, 2022 1 hour ago, captainbeefheart said: What do you have for resistance measured directly at the woofer bypassing the crossover network? Are the woofers stock? I am trying to figure out a way for you to test everything with limited test equipment. It would be nice if you could do a frequency vs impedance sweep of the speakers. You can download some free software like Arta and a signal generator app for your phone and do a sweep. 37 ohms (approx) new multimeter on the way stock afik I will look into Arta Quote Link to comment Share on other sites More sharing options...
Defacto Posted January 22, 2022 Author Share Posted January 22, 2022 30 minutes ago, 001 said: This should not be a problem at all to re-confirm just to be sure , but the test would have to be done with 2 speakers versus a single we could then rule out the wiring , the amplifier , and the woofers of the Forte II ( DCR is 3.7 Ohms /normal ) The two R26F play fine at 80; the two Forte II cause the Onkyo to shut down. Quote Link to comment Share on other sites More sharing options...
OO1 Posted January 22, 2022 Share Posted January 22, 2022 9 minutes ago, Defacto said: The two R26F play fine at 80; the two Forte II cause the Onkyo to shut down. ok , so the issue seems to be narrowed down to the Crossovers , the woofers are ok at 3.7Ohms DCR - if I were you , I would contact @captainbeefheart by PM , send him the crossovers , he can check them for you and do any repairs if needed . Quote Link to comment Share on other sites More sharing options...
Defacto Posted January 22, 2022 Author Share Posted January 22, 2022 34 minutes ago, 001 said: ok , so the issue seems to be narrowed down to the Crossovers , the woofers are ok at 3.7Ohms DCR - if I were you , I would contact @captainbeefheart by PM , send him the crossovers , he can check them for you and do any repairs if needed . Fortunately, captainbeefheart is participating in this thread! lol I just did the switching the Forte IIs for the R26Fs and they all played fine! argghhh I have both Forte IIs hooked up again and will work them to see if some Deity felt sorry for me and miraculously fixed everything. 1 Quote Link to comment Share on other sites More sharing options...
OO1 Posted January 22, 2022 Share Posted January 22, 2022 20 minutes ago, Defacto said: miraculously fixed everything. Great , end of story - God Bless for Good Contacts - Quote Link to comment Share on other sites More sharing options...
captainbeefheart Posted January 22, 2022 Share Posted January 22, 2022 49 minutes ago, Defacto said: lol I just did the switching the Forte IIs for the R26Fs and they all played fine! argghhh I have both Forte IIs hooked up again and will work them to see if some Deity felt sorry for me and miraculously fixed everything. Give yourself a pat on the back! Maybe the initial reading of .4 ohms was correct and through moving the board around to inspect fixed whatever was causing a short. After that you have been getting normal resistance readings and they play fine now confirming the short is gone, hopefully for good. Everyone likes a happy ending Quote Link to comment Share on other sites More sharing options...
Defacto Posted January 22, 2022 Author Share Posted January 22, 2022 (edited) Thanks guys I set the volume at 80/100 for as long as I could stand it and all did go well. The fact that all was fine before at lower volume is what makes it not seem like a short to me but like you, I'll hope for the best. ps: I sure love the Forte IIs! Edited January 22, 2022 by Defacto Quote Link to comment Share on other sites More sharing options...
captainbeefheart Posted January 23, 2022 Share Posted January 23, 2022 1 hour ago, Defacto said: Thanks guys I set the volume at 80/100 for as long as I could stand it and all did go well. The fact that all was fine before at lower volume is what makes it not seem like a short to me but like you, I'll hope for the best. ps: I sure love the Forte IIs! It may have been something that was only touching and shorting out from the vibration of the speakers at higher output levels. At lower levels it wasn't causing a short and played normal. Quote Link to comment Share on other sites More sharing options...
Defacto Posted January 23, 2022 Author Share Posted January 23, 2022 I see what you mean. Here's hoping! Quote Link to comment Share on other sites More sharing options...
Defacto Posted January 25, 2022 Author Share Posted January 25, 2022 On 1/22/2022 at 5:04 PM, captainbeefheart said: It may have been something that was only touching and shorting out from the vibration of the speakers at higher output levels. At lower levels it wasn't causing a short and played normal. I've been working the system for a couple days now with no issues. I'm ready to declare that you were right! awesome! I am a happy camper with my Forte IIs. Thank you all again for your help. (What they do for movies is amazing!) 2 Quote Link to comment Share on other sites More sharing options...
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