Search found 830 matches

by Robert R
Thu Feb 22, 2018 12:02 pm
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

There will be a fixed number of kits, and we want them all to get homes. But when they're gone, that's it – no more. The following list is correct, as best I can make it, at this moment. There are a few extra kits, and several forum guys whose claim to buy an amp was pretty weak are on a 'contingenc...
by Robert R
Wed Feb 21, 2018 11:41 pm
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

Updated buyers list coming very soon. It will include kve777 and everybody else I know of who is supposed to get a kit, or two if they wish. There will be some kits left over, and most of those will go to new attendees who have already spoken of their plans to attend . Then, as they last, any furthe...
by Robert R
Wed Feb 21, 2018 7:04 pm
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

OTD - I'm sure Ed has something effective in mind. But first I have to provide him with a final list of buyers. Working on that right now.
Actually the list won't be absolutely final for a while, but it'll be close. Anybody on it will stay there, unless they want out.
RR
by Robert R
Wed Feb 21, 2018 6:20 pm
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

Bob is finally back from his Hawaiian vacation, and we talked a little today. On the subject of the amplifier kits, he plans to get the circuit board designed soon. He's decided that the board will contain the tube sockets. The downside is at least a theoretical increase in fragility. but the build...
by Robert R
Tue Feb 20, 2018 9:32 pm
Forum: CARVER Equipment Repair/Help Forum
Topic: M-500t won't shut off!
Replies: 3
Views: 63

Re: M-500t won't shut off!

Those amps are always on unless actively shut down - not by just the switch, but by circuitry that the switch turns on when you move it to 'off' position. So something in that off-circuit is not working. Probably time for some servicing. Be sure that whoever works on it understands Carver's Magnetic...
by Robert R
Mon Feb 12, 2018 9:51 pm
Forum: Way the Hell !! OFF TOPIC !!
Topic: that OTHER site
Replies: 10
Views: 222

Re: that OTHER site

You didn't have to be anybody special 'several years ago' to get kicked off the other site; many were, often just for the unforgivable sin of not posting often enough. They had a big problem – ask Harry about that. But now the place is under new management, and the atmosphere is quite different. The...
by Robert R
Tue Feb 06, 2018 11:21 am
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

Yeah,, Ray - I know there are controls that are very good. But this project is on a budget that can;t go there. My usual answer is to use no control at all - just two pairs resistors - as voltage dividers of a fixed value. You can go through a bunch of resistors with your ohmmeter to get precise mat...
by Robert R
Mon Feb 05, 2018 5:20 pm
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

Got it, Brian - all 120's. Haven't heard mention of the volume control lately - not sure that means anything one way or the other, though. Personally I'm ambivalent about a gain control. If you are moving these amps from one system to another frequently, it can be very handy. But it's often hard to ...
by Robert R
Mon Feb 05, 2018 3:36 pm
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

Talking with Bob today about tube prices. As to brand, he appears to be sticking with Tung-sols. The price with KT-120's is almost fixed, in the neighborhood of 50 bucks extra. He also wants to come up with a lower number, for those who would buy their kit/s with no tubes at all. But he's very dist...
by Robert R
Sun Feb 04, 2018 11:03 pm
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

iamjohngalt wrote:
Sun Feb 04, 2018 6:45 pm
I think it will take KT120's to get 100wpc, and KT88's will likely be closer to 75wpc.
(Just speculation without any details from Bob.)
Those numbers are right on; Jordon measured 70-75 with KT-88's and 105 with 120's. All subject to minor changes, of course, as Bob tweaks.
RR
by Robert R
Sat Feb 03, 2018 10:21 pm
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

Ray - Bob will have the boards all done and tested. You can always try yours with some ketchup...
RR
by Robert R
Sat Feb 03, 2018 8:47 pm
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

Kevin, Bob is using all 12AX7's - three of 'em- for the non-output stages in this model. He hasn't mentioned brand, but Telefunken is a good bet. He's bringing a bunch of 6L6's. Last October when we first talked of this project, Bob said he'd send a schematic and some prototype pictures. I got the p...
by Robert R
Sat Feb 03, 2018 8:20 pm
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

Eric - If you want two, that can be arranged. No parts have been ordered yet, and won't be for a while yet. I talked Bob into doing a few extra, so no problem - just say the word, but say it pretty soon...

RR
by Robert R
Sat Feb 03, 2018 2:10 pm
Forum: Carver Speakers
Topic: Platinum Speaker Models
Replies: 4
Views: 116

Re: Platinum Speaker Models

Pretty sure some had single, and some dual; not sure of dates. It's a very easy changeover. If it's an upgraded Original pair, it would have had the flat Chungtai 'honeycomb' woofers, which are probably at least as good as the T- type that Plats had, and seemed to last longer, as well. Other than th...
by Robert R
Thu Feb 01, 2018 12:40 pm
Forum: CARVERFEST 2018
Topic: 2018 Carverfest Tube Power Amplifier Build
Replies: 215
Views: 4990

Re: 2018 Carverfest Tube Power Amplifier Build

Latest From Bob The $575 price will be for kits with KT-88's. KT-120's are more (exact amount uncertain as of now), but well worth it. KT-150's give just a little more, due to other design limitations, so their use is not worth the difference in price, which is considerable. Still waiting to hear ab...

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