For example
Kenmore Microwave Oven High Voltage Transformer P/N : MD-803AMR-1 | eBay
They are all made by one company in China as far as I can tell. Typical values end up 60mH to 100mH and 0.5ohm DCR. Rated 10amps typically.
What speakers are you using with your MoFos? I should be up and running in a couple of weeks (with 193Vs (on back order - wonder where they have all gone!),19v supply initially (but happy to shift to 24v, just happen to have the 19v for free so starting with them) and a BA3 pre (currently running into audiosector lm3875). I will use my spendor sp1 to start with (90db @ 1w) and expect they will give me a reasonable level but I don't have to explain to anyone here that I am just interested in building something. My initial thoughts are something like a Parham Pi3. I am in Australia (Tasmania) so for me eminence aren't so cost effective so something based on a faital pro driver would potentially be better. I know I am potentially a bit off topic but just curious to see what others are using and what I could focus my next build on. Thanks Nigel. ps my room is 14ft * 25ft and listening levels in low to mid 80db range.
fw1712,
I'm building a full range speaker with Tang-Band 6.5" driver.
Driver weights 8.5 lbs. 89db efficient. Against people's recommendations, I'm going to try it in an aperiodic box. If it doesn't work, adding a port or covering the opening won't be a big deal.
Using a flat-pack box from parts-express that's 1.16ft^3.
Not great efficiency, but something was brought to my attention.
90db is very loud. On my meter, with bi-amped F7s (simulated F7s), musical peaks were 82db on the current 2-way speakers (90db eff.). At 2w with the TB, we're already at 95db. Of course there are losses, but there's also room reinforcement and with two speakers in a room, doesn't' the efficiency raise by 2 or 3db? I kind of think the need for 95db and above efficiency is a little over-blown, unless you are using something like 2A3 tubes at 3w, then go for 100db speakers. That's my take on this and I'm sticking with it.
Tang Band W6-2144 6-1/2" Paper Cone Full Range Driver 8 Ohm
I'm building a full range speaker with Tang-Band 6.5" driver.
Driver weights 8.5 lbs. 89db efficient. Against people's recommendations, I'm going to try it in an aperiodic box. If it doesn't work, adding a port or covering the opening won't be a big deal.
Using a flat-pack box from parts-express that's 1.16ft^3.
Not great efficiency, but something was brought to my attention.
90db is very loud. On my meter, with bi-amped F7s (simulated F7s), musical peaks were 82db on the current 2-way speakers (90db eff.). At 2w with the TB, we're already at 95db. Of course there are losses, but there's also room reinforcement and with two speakers in a room, doesn't' the efficiency raise by 2 or 3db? I kind of think the need for 95db and above efficiency is a little over-blown, unless you are using something like 2A3 tubes at 3w, then go for 100db speakers. That's my take on this and I'm sticking with it.
Tang Band W6-2144 6-1/2" Paper Cone Full Range Driver 8 Ohm
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Hello vdi_nenna
I do agree with you
As for me the efficiency requirements are mainly determined by the listening environment.
When living in an appartment and neighbours all around i do not need much power nor efficiency...
Thus at home a clean 4 Watts and 87db speakers do the job. In the office i have other possibilities.
I do agree with you
As for me the efficiency requirements are mainly determined by the listening environment.
When living in an appartment and neighbours all around i do not need much power nor efficiency...
Thus at home a clean 4 Watts and 87db speakers do the job. In the office i have other possibilities.
Saw it yesterday Mike. Killer stuff!
They need a high gain preamp?
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Very nice, I wish there will be an article about the new stuffs.
A video would be lovely as well
Very nice, I wish there will be an article about the new stuffs.
A video would be lovely as well
I'll gladly write them up or video them at some point.
Though, knowing me, it could be BAF by then.
I'll try to do better.
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