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In Reply to: RE: use a sufficiently powerful amp with high current. posted by Satie on April 15, 2017 at 12:56:09
LOL, and ouch re blowing your transistors.
Paradoxically, I think I'd worry less about blowing the ribbon tweeters than the quasi ribbons, since they can easily be replaced. But I think that even with an amp that's clipping, the tweeters are unlikely to blow if you use the right fuse. My Hafler used to hard clip sometimes into the 1-D's, and I used to blow fuses periodically without harm (to the speakers, anyway, not sure about my neighbors or ears).
Still not sure what I'll use to drive the tweeters -- I'm assuming now A-21 on the bass, Benchmark on the mids . . .
Follow Ups:
Yeah that Fosgate was a real toaster. I have another and a friend with a RM30 ribbon box speaker used one for a while for the upper portion for its' Chocolaty midrange: smooth rich and dark, as he described it. Burned his too. I still recommend the amps from this series, but no longer for low efficiency speakers and low impedances. The 4200 is amazing so long as it does not have to do deep bass.
Should be similar to the haffler amp design IIRC. Lovely amps. Particularly when converted into NYALs with a SE tube front end. Also a long standing recommendation for amps, particularly the XL600 and the 9000 series. I can easily see the amps clip into a T1D.
I thought about modding my Hafler for a bit, but it looks like I'll be Ebaying it at some point. Though maybe I should reconsider -- it might be a good match for the tweeters. It's been packed up in the basement since like forever.
If you do use it for the tweeters it will benefit from some updated PS caps, diodes and direct contact to the output wire since the OEM binding posts are not all they should be. Lots of mod projects for the Haffler progeny online.
It would be fun to rebuild it, but God knows when I'll have the time! Latest is it seems the contractor didn't prime the sheetrock on my listening room ceiling before he skim coated it, and as a consequence, when I pulled off what looked like some peeling paint from the ceiling, the plaster started coming off in big chunks. So I primed and started patching, and for the next few days the room will be unusable:
Then I'll have the new amp to try, after which I have to rebuild the speakers, try the Mini DSP, and hang the projection screen, which has been lying on the floor for a month now. So I have to be realistic about what I can hope to accomplish.
Most Maggie owners mark the floor once they finalize the best speaker positions. It looks like you are planning to mount them on the walls and/or ceiling. Or perhaps the tape marks off multiple crime scenes!
Seriously though you have a room filled with old world detail and character!
Shhh, you'll give away my trade secrets!
Seriously, this room was built in 1695 and someday I must complain to the guy who built it because the ceiling is too low for Acoustats. The beam above the speakers is part of the original frame and was hewn from a gigantic chestnut log -- wonder what they'd think about MDF?
"Room built in 1695" and some other posts in this thread:
Hey, the ghosts say they *like* the music, though a distinct minority argue that I'm guilt of witchcraft and should be burned at the stake.
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