If anyone needs any 100:1 ESL transformers, I just listed a pair on Ebay.
There is nothing wrong with them; it's just that 100:1 trannies were not
the best choice for my speakers, as my speakers use large panels with very
close d/s spacing and only 40% open stators = too-high capacitance to get
good treble with 100:1 step-up. *I've changed my setup to a 68:1 tandem
toroids, which cost me some efficiency but I gained the brighter treble I
was looking for. *Anyway, check out my listing on Ebay if you need some
high-ratio trannys... the starting bid price is 1/4 of what I paid for
them.
Transformers for Electrostatic Loudspeakers (warrantee) - eBay (item 120532007060 end time Feb-23-10 15:14:00 PST)
There is nothing wrong with them; it's just that 100:1 trannies were not
the best choice for my speakers, as my speakers use large panels with very
close d/s spacing and only 40% open stators = too-high capacitance to get
good treble with 100:1 step-up. *I've changed my setup to a 68:1 tandem
toroids, which cost me some efficiency but I gained the brighter treble I
was looking for. *Anyway, check out my listing on Ebay if you need some
high-ratio trannys... the starting bid price is 1/4 of what I paid for
them.
Transformers for Electrostatic Loudspeakers (warrantee) - eBay (item 120532007060 end time Feb-23-10 15:14:00 PST)
it is still a great deal though if i had credit card i would put a bid on them definitely. jer
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Someone already put up a minimum bid ($50) so I guess they will go for that if no one bids more. Just trying to recoup some of my investiment. They are pretty beefy trannys and I think they would be great for bass in segmented panel or a full ranger with larger d/s spacing/lower capacitance that what I'm using.
a couple of years ago i was going to get some, since they were the only ones i could find here in the states for a reasonable price,jer
Charlie, I will bring the mone i owe you on Sunday, just need and let me know. while here, do they sell MDF there? if not, please let me know, do not want to come there empty handed, preparation is in order.
Jerry helped me fix my preamp, over the phone. that was a problem that has bugged me for over ten years, he answered it in a few minutes, just wanted to show what happens away from the site and how helpful everyone is.
maybe should have posted that elswere, but it needs to be noted, Charlie and Jer have the most knowledge and information I have ever encountered, anywhere, period
Jerry helped me fix my preamp, over the phone. that was a problem that has bugged me for over ten years, he answered it in a few minutes, just wanted to show what happens away from the site and how helpful everyone is.
maybe should have posted that elswere, but it needs to be noted, Charlie and Jer have the most knowledge and information I have ever encountered, anywhere, period
Charlie,
perhaps I'll bid on them. I need to sleep on it. Can you give a ballpark $ figure for shipping to 9160, Belgium?
Thanks
Kenneth
perhaps I'll bid on them. I need to sleep on it. Can you give a ballpark $ figure for shipping to 9160, Belgium?
Thanks
Kenneth
Update: If anyone was watching my Ebay transformer auciton, I had to end the listing and then relist it in order to add international shipping-- so, search again if you want to bid.
thanks,
Chaz
thanks,
Chaz
Last chance to buy a pair of 100:1 trannys for cheap... there's only one day left before the auction ends and the current price bid is a measly $52
if someone here does not know about this, i will explain, those go for about 100usd, if i had the money, they would be in my pocket, as a back up or for the real deal. I will say, its hard to find that in the states, much less around the world.
it is more than i need but, more is better than nothing, at that price.
it is more than i need but, more is better than nothing, at that price.
You have very very beautiful ESL project!😀
When working individually,how about the frequency response of the ESL panel?Thanks.
When working individually,how about the frequency response of the ESL panel?Thanks.
I don't have the equipment to plot a response curve. My only measuring tool is the rudimentary RTA built into my Audio Control C101 10-band graphic equalizer-- not lab standard equipment by any means, but it's what I have. I recently lowered the crossover point to around 270 hz (24db slope). Also, I have a 1 ohm resistor in front of the trannys to safeguard my amps from low impedance.
Measuring from 3ft on axis and with the EQ defeated, the RTA shows a max dipole cancellation of about -6db centered on the 480 hz band. Above the cancellation, the response becomes flat thru the 7680 hz band, then drops to about -3db in the 15.5Khz band. Applying EQ easily brings the response to flat thru all bands. I suspect the 1 ohm resistor in front of the trannys causes the dip at the top end but I can't hear anything that high up anyway so I'm OK with it.
I don't have the equipment to plot a response curve. My only measuring tool is the rudimentary RTA built into my Audio Control C101 10-band graphic equalizer-- not lab standard equipment by any means, but it's what I have. I recently lowered the crossover point to around 270 hz (24db slope). Also, I have a 1 ohm resistor in front of the trannys to safeguard my amps from low impedance.
Measuring from 3ft on axis and with the EQ defeated, the RTA shows a max dipole cancellation of about -6db centered on the 480 hz band. Above the cancellation, the response becomes flat thru the 7680 hz band, then drops to about -3db in the 15.5Khz band. Applying EQ easily brings the response to flat thru all bands. I suspect the 1 ohm resistor in front of the trannys causes the dip at the top end but I can't hear anything that high up anyway so I'm OK with it.
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