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In Reply to: RE: 32 Ohm Drivers // 32 Ohm OPTs posted by Mr_Steady on November 28, 2014 at 14:43:06
Far from screwed - go series parallel and if you want to be anally retentive about it measure the Fs of each driver and match them accordingly : say that A and B are in parallel, and C and D are in parallel, and AB are in series wirh CD. Match A to C as close as possible and C to D as close as posaible. With 8 drivers to work with you are sure to have success, and if one is way off just get another.My original point was just to give a reason why series connecting drivers is less theoretically perfect than a parallel or series parallel connection, but there have been many successful speakers with series connected drivers (heck the Bose 901 has nine !) so it's far from an insurmountable problem
Edits: 11/28/14Follow Ups:
His supposed lack of knowledge is on occasion belied by his direct and inquisitive line of questioning. He doesn't seem to have any knowledge or direct experience with the circuits you were inquiring about unless it suits him so take everything with a grain of salt. Please see the related posts on HiEff Forum.
Edits: 11/28/14
"His supposed lack of knowledge is on occasion belied by his direct and inquisitive line of questioning. He doesn't seem to have any knowledge or direct experience with the circuits you were inquiring about unless it suits him so take everything with a grain of salt. Please see the related posts on HiEff Forum."
That's not a very nice thing to say.
Max was a part of the first thread you reference, and in fact I mentioned him and his post by name, because I said I was giving "the other side of the coin" from his post. I assume he read the rest of that thread, but I may be wrong.
"He doesn't seem to have any knowledge or direct experience with the circuits"
I am self taught, and people who are self taught have huge gaps in their knowledge base. I didn't start learning high-end or electronics till later in life, when you have a lot of competition for your free time. I apologize to the learned people here for asking newbie questions. I know just enough to be dangerous, and I have the imagination to turn that into very dangerous.
The sad fact is, I know there are a lot of very knowledgable people reading this who I bet have an opinion about running a SET amp with a 32ohm OPT, but they will never post it, because of people like you.
That's a crying shame.
"take everything with a grain of salt."
To be sure!!!
Mr. James Steady
Big speakers and little amps blew my mind!
If I had 32 ohm speakers or if I was trying to take advantage of that transformer's ratio to load an odd tube I would use it.
Otherwise your posts sound like a troll. You try to re-word the same statement (not question) in order to advance your theory. Troll-like behavior. If that's not the case and you are just trying to get info then ask questions and enjoy the answers you get.
The sad fact is that you have received opinions from some knowledgeable people here (I'm not counting myself in that group)and give the impression that you know differently. Good luck with that.
"you have received opinions from some knowledgeable people here ... and give the impression that you know differently."
That's become a common theme on the DIY forum as well. Many good people have left as a result of the confrontations it causes.
--------------------------
Buy Chinese. Bury freedom.
Kingdom of the Triodes,
""you have received opinions from some knowledgeable people here ... and give the impression that you know differently."
That's become a common theme on the DIY forum as well. Many good people have left as a result of the confrontations it causes.""
I don't think our friendly banter about the Chinese has ever risen to confrontation. I don't see the problem.
I did write a diatribe, but that is because some people say things very glibly, that I take deadly seriously, because I actually have had someone try to destroy me. A couple of times I've had punk 18 yr old white kids say, "I'll shoot you in the face motherf@#$er!" They don't know how close they come...
Chip seemed to think it was okay.
Jamie
Big speakers and little amps blew my mind!
Kyle,
Here is another fairly simple question for you. You said I reword things to make a point, but let us consider this the Socratic Method.
If you had a free built to spec 2a3 SET amp, and a free built to spec paper wide range driver. What impedence would you choose?
I would choose 16ohm into 16ohm. If you ask me to justify that I could give you my reasons, but I'm not saying I could quote chapter and verse out of an engineering manual. I tell you my choice up front, so you don't think I'm BSing you.
Big speakers and little amps blew my mind!
I get it. You think I started this thread to win an argument on the HE forum? You think I'm stupid?
This is the subject that has been on my mind. I could care less about Tannoy Reds and 16ohm wide range drivers. I was trying to help the OP of that thread, which I guess I failed at.
Big speakers and little amps blew my mind!
"If I had 32 ohm speakers or if I was trying to take advantage of that transformer's ratio to load an odd tube I would use it."
Oh, that's a simple answer to a fairly simple question. Which is what I was looking for.
Thanks.
Big speakers and little amps blew my mind!
"The sad fact is that you have received opinions from some knowledgeable people here (I'm not counting myself in that group)and give the impression that you know differently. Good luck with that."
This is a public forum right? I certainly do have my opinions about things. Just because someone is an engineer, doesn't mean they have better taste than me. Then again they might, and be an EE. That would be cool. I appreciate every response I've gotten to all of my posts. I very much appreciate Max for killing a day explaining wiring to me. I hope I use some of his information in my project. I know I will. I hope his project goes well.
The sad fact is, that I've had eight years of reading this forum and not responding to anything bottled up inside me, and now I joined, and I'm afraid I'm going to spew out all the crazy, esoteric, minutae that I've always wanted to know about, but was too afraid to ask. That's a literary reference.
When I spew it, the floor may get messy. You may want to watch your shoes.
I really intend to just ignore trolls, but since you are my first, I thought I'd give a little explanation.
Mr. Steady
Big speakers and little amps blew my mind!
See, I had thought this before.
These drivers were a group buy direct from the factory. If Paul Spencer had specified 32ohm drivers then paralleling them would have brought them to 8ohms, and everybody would be home free.
Dammit.
Jamie
Big speakers and little amps blew my mind!
Max,
I hate to keep bothering you. Just sign off when you want to.
I'll read up on how to measure the Fs of a driver. I have 12 and only require 8. The instructions you gave on matching is priceless to me. Thank you. That is, if I want to be anal rententive, which I never am.
Really you've got the wheels turning on how to go parallel. Like breaking up the quad into two pairs run parallel, that is, two pair at 4ohms each. Then you could use a 2a3 amp on the 4ohm tap to run the quad of two pairs. One amp per horn. Getting way way back to the origins of this thread, I don't think running a 2a3 on the 4ohm tap is a good idea for various reasons, but options are always limited.
The Decware SE84 strapped mono can give about 4 watts into a 1 ohm load, and drive the hell out of it.
Max, thanks for helping me see my options more clearly.
Jamie
Big speakers and little amps blew my mind!
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