timlub

Responses from timlub

Hi efficient speaker, bass problems
Hi Duke, This all makes sense, back in my old days at SpeakerCraft/Marcof, we made a line speakers called Rock Boxes, We didn't call it thermal compression, but we did talk a fair amount about voice coil temperature rising and increased resistance... 
Hi efficient speaker, bass problems
Hi Duke, Well after you got my attention by putting my handle in your post, I read your post thoroughly. I see your point completely and can see this happening, but won't that same speaker create frequency dips in some rooms? and/or do you recomme... 
Hi efficient speaker, bass problems
Hi Duke, Not overly important, but your last post was responding to Lewhite. Tim 
Hi efficient speaker, bass problems
Hi Unsound, Its all perception my friend.I think of low as 82 to 86 mid as 87 to 91 mid-high as 92 to 94 high as 95 +Thats just me, I can see others not considering a mid high, but in the past, I've been aske say about 93db in sensitivity, is this... 
Hi efficient speaker, bass problems
Hi Ralph, Its been some years since I've looked at field coils. How did they solve the huge dc resistance numbers? Tim 
Hi efficient speaker, bass problems
Wes, yes you read a bit of attitude from me.The 500 hZ statement was added by you, I don't recall just howFar it was capable of, but I crossed it at 400. I took issue with youProposing that it was clearly not possible for the driver to performAs I... 
Preamp with tone control.
Jim Bonjourno is making a line called Spread Spectrum Technologies. He has a preamp called Ambrosia... It has tone controls. I have not heard it, but have read maybe a 1/2 dozen reviews. The worst of the write ups say that it is outstanding and is... 
Hi efficient speaker, bass problems
Read what I said, Low 30's, High 90's.... I called my old partner, he recalled 3db down @ 34 & finished sensitivity of 98... Also, if I recall, their were about 15 or twenty models in the PR380, resonances from 19 to 50 and final qts of .15 to... 
Hi efficient speaker, bass problems
Hi Wes, Well after I wrote, I searched my memory long and hard, You are correct, but absolutely wrong. I recall one was an Audax pro 15. 101 sensitivity, Fs was around 23, but qts was something like .2, we added a fair amount of mass which drove ... 
Hi efficient speaker, bass problems
Hi Weseixas, I'm not sure your last statement is entirely true. Maybe if you mean bass down to 20hz, but I have used a couple of different 15's that get you down to near 30hz that did a great job, with sensitivity ratings of 97 & 99.Both were ... 
tweaking cross over speaker
Hi Thenis, Caps are an easy change. The biggest difference will be made by changing any cap that is in the positive lead. These caps will be in the crossover circuit directly and not compensation circuitry. Any film cap should be an improvement ov... 
tweaking cross over speaker
Thenis, Look me up and send me an email at home with all of the speaker information that you have. I will look your speakers up and give you solid changes that you can make. PBN Audio is absolutely correct about resistance, but I have had a coil w... 
Hi efficient speaker, bass problems
Hi Mapman, Speakers and amps are both very subjective. I'm sure that one guy would tell you his amp sounds good on about anything and another guy would say, I've heard that amp and it sounds like crap, same with speakers. I don't recall ever seein... 
Hi efficient speaker, bass problems
Hi Mapman, I am currently using a very highly modified old Pure Class A Sumo Nine. I am using it on 86db 4 ohm speakers and have used it on 97db 8 ohm speakers as well as a few others, I have heard nothing but excellent bass in weight, speed and c... 
Hi efficient speaker, bass problems
Tmsorosk,It looks like you have answered your own question. When listening to high sensitivity speakers your friends were using low powered tubed amps. We have all talked all around your question.There are some tubed amps with very good control, b...