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imhififan

Responses from imhififan

testing a crossover
I just recently learned that iron core inductors are suppose to be better than air core for the bass driver due to the lower dc resistance in many cases. @fiesta75 If replace a cored inductor with air core, I think it is important to use the same... 
testing a crossover
Tell you what,you guys have put so much time and effort into this,this weekend i am going to clean everything up and start again,i will take variuos readings on crossovers,re-assemble the whole two speakers and do it all again and then i will ... 
testing a crossover
Please look at this photo: https://ucarecdn.audiogon.com/32d4343f-f8e2-4de2-95f7-2e0766972c94/-/autorotate/yes/ If that is a short, for bi-amping, it will connect two amplifier output together through the 3.5mH inductor and the 3.3Ω resistor. Ther... 
testing a crossover
I don’t know it’s can be of any help, you can find the xover schematic here: https://ucarecdn.audiogon.com/a89e98dd-d4a0-4acf-9f74-934683ea9b70/-/autorotate/yes/ 
Gain and linestage
he's in business because he enjoys doing audio. @atmasphere   +1111111111111111 
Chained speakers signal connected in series
@fiesta75, I think it was 7 or 8 years ago, my friend use Hornresp (http://www.hornresp.net/) did a simulation on his speakers and found that connect two speakers in series the low pass filter cutoff frequency get lowered, our conclusion was the... 
Chained speakers signal connected in series
@fiesta75,  Can we agree that Rt equals 16ohms in series? YesCan we agree that Lt = L1 + L2 in series? No, IMO, the first woofer will see the voice coil of second woofer as an inductor in series, same for the second woofer, it will see the voice ... 
Chained speakers signal connected in series
I disagree with imhififan’s opinion that the crossover points will change. I believe the Tannoy SGM 10B has parallel crossover, if connect two speakers in series, the LF section will be #1 speaker low pass inductor --> #1 speaker woofer --&g... 
Chained speakers signal connected in series
You can connect two speakers in series and it won’t harm the amplifier. BUT because of two sets of crossover connected in series the sound it produce will be totally different from just one speaker connect to the amplifier! Both woofer in each spe... 
Dahlquist DQ-20i crossover schematic
https://audiokarma.org/forums/index.php?attachments/dq-20i-schematic-jpg.117926/ you need to register as a member to view the file.  
testing a crossover
You can find all the photos herehttps://systems.audiogon.com/ Without drivers connected, The HF measurement should equal to the DC resistance of the 0.22mH inductor. The MF measurement should equal to the DC resistance of the 2.5mH inductor + 2.2Ω.  
testing a crossover
@fiesta75 and pragmasi, IMO, the layout of components is not ideal, especially those capacitors that seat on top of resistors! since he is at it, I think it's time to fix that...  
testing a crossover
Hi Guys,thankyou so much for all your help,but i still dont see a solution to this problem,in my opinion there is shorts in both xos,please see below- LEFT SPEAKER / RIGHT SPEAKER speaker terminals with everything connected on both speakers MID/H... 
Complete Proprietary Systems
goldmund, Sony... 
testing a crossover
ill try draw a schem.but its difficult, but ill do my best @ likklegerry, If you can print-out the crossover pcb photo and add all the component position on it with wiring and post the picture, maybe we can figure out the schematic and go from t...