Search found 177 matches

by bostod
Mon Aug 17, 2020 8:17 pm
Forum: Speakers
Topic: Help with Bowers and Wilkins CDM7 speakers
Replies: 11
Views: 8727

Re: Help with Bowers and Wilkins CDM7 speakers

Tested both the top keeler driver and the bass driver. Nothing on a multimeter. Getting the amps tested tomorrow. Does anyone know if Bowers and Wilkins had individual numbers for each driver. I cant seem to find the exact match but some look close with the first 2letters and digits matching but las...
by bostod
Fri Aug 14, 2020 3:36 pm
Forum: Buying and Selling
Topic: Wanted. Valve pre amplifier
Replies: 6
Views: 3794

Re: Wanted. Valve pre amplifier

Got a Dook audio(nobsound) 12AX7 Valve Tube Preamp secondhand for £110. Allready bought some Sovtek 12AX7 valves to replace the stock ones. Cheap place to start and can sellon for little loss if no good
by bostod
Thu Aug 13, 2020 7:39 pm
Forum: Speakers
Topic: Help with Bowers and Wilkins CDM7 speakers
Replies: 11
Views: 8727

Re: Help with Bowers and Wilkins CDM7 speakers

So the problem is just with one speaker. His set up is an Audiolab 8000a feeding an Audiolab 8000p power amplifier. He was watching TV connected to beresford Dac. He said he was listening at low volume and heard a loud popping sound. I went down and listened to the damaged speaker, only the tweeter ...
by bostod
Tue Aug 11, 2020 10:31 pm
Forum: Speakers
Topic: Help with Bowers and Wilkins CDM7 speakers
Replies: 11
Views: 8727

Help with Bowers and Wilkins CDM7 speakers

hello guys. My friend has a problem with one of his Bowers & wilkins CDM 7se speakers. He heard a loud pop and the 2 main drivers stopped working. Only the tweeter works now. I tried to bypass the crossover by placing the speaker wire directly onto the woofer. No sound from it. the other matchin...
by bostod
Sun Aug 09, 2020 5:56 pm
Forum: Buying and Selling
Topic: Wanted. Valve pre amplifier
Replies: 6
Views: 3794

Re: Wanted. Valve pre amplifier

My source is digital. Mostly cd quality. But some 320kbs from phone or digital backup.I also listen to vinyl on my second system
My area is Doncaster DN3
by bostod
Sun Aug 09, 2020 11:40 am
Forum: Buying and Selling
Topic: Wanted. Valve pre amplifier
Replies: 6
Views: 3794

Wanted. Valve pre amplifier

hello guys. I've currently got a pair of audiolab 8000m's in my second system. The current amplifier is a NVA passive preamp. My speakers are frugal horns with the new Mark Audio Alpair 7ms. And Rogers LS6A/2. I like the sound but it can get a little fatiguing, especially with female vocals, cymbals...
by bostod
Sun Aug 09, 2020 11:29 am
Forum: Buying and Selling
Topic: Wtd mark audio alpair 7
Replies: 1
Views: 2196

Re: Wtd mark audio alpair 7

Bought the new alpair 7 now.
by bostod
Fri Jul 10, 2020 7:09 pm
Forum: Beginners
Topic: Basics of valve amplifiers
Replies: 17
Views: 11366

Re: Basics of valve amplifiers

I just bought a bunch of these for another project - https://www.ebay.co.uk/itm/EF94-6AU6-SIEMENS-NOS-BOXED-VALVE-TUBE/273734119250?epid=21029785970&hash=item3fbbd32f52:g:5SUAAOSwu79demSf They should be as good as anything , based on the quality of their other valves. Great call. These sound fa...
by bostod
Fri Jul 10, 2020 3:12 pm
Forum: Buying and Selling
Topic: Wtd mark audio alpair 7
Replies: 1
Views: 2196

Wtd mark audio alpair 7

just got some frugal horns second hand. Unfortunately the drivers were completely broken during transit. Looks like the magnet was just too heavy for the plastic enclosures, with snapped detaching the magnets. Does anyone have a second hand pair for sale failing that is there an alternative I can lo...
by bostod
Sun Jul 05, 2020 5:04 pm
Forum: Beginners
Topic: Basics of valve amplifiers
Replies: 17
Views: 11366

Re: Basics of valve amplifiers

Yeah probably too much for me to do. I have bought some Siemens 6au6's to try as reccomended so they will match the Siemens ecc82's.
Also bought some 6au6's rca black plates to compare. About my limit I think. will look at the kt88's when they begin to run out but that should be a while yet
by bostod
Sat Jul 04, 2020 2:53 pm
Forum: Beginners
Topic: Basics of valve amplifiers
Replies: 17
Views: 11366

Re: Basics of valve amplifiers

So apart from the mallards. What would be a good ecc82 to try for reasonable money.
Same question for the 6au6's
Thanks
Dave B
by bostod
Fri Jul 03, 2020 9:06 am
Forum: Beginners
Topic: Basics of valve amplifiers
Replies: 17
Views: 11366

Re: Basics of valve amplifiers

Thank you for that. From your post it looks like I can swap out the valves for the same type and I would guess that's what the previous owner did to get the GE Bramar combination of the same type. Would swapping to a matched pair of same type but different manufacturer make much difference. Now cons...
by bostod
Thu Jul 02, 2020 9:21 pm
Forum: Valves
Topic: Help needed on kt88 WAD amplifier
Replies: 3
Views: 7638

Re: Help needed on kt88 WAD amplifier

Thanks for the reassurance Nick. Very much a novice here but trying to learn
by bostod
Thu Jul 02, 2020 7:23 pm
Forum: Beginners
Topic: Basics of valve amplifiers
Replies: 17
Views: 11366

Basics of valve amplifiers

Hi guys. Could someone point me in the right direction to learn the basics of how these valve amplifiers work. I have an old world audio designs kt88 power amplifier. From what I have found on Google it consists of 4 kt88 tubes for the power section and 4 small valves for the input section. Is this ...
by bostod
Thu Jul 02, 2020 10:32 am
Forum: Valves
Topic: Help needed on kt88 WAD amplifier
Replies: 3
Views: 7638

Help needed on kt88 WAD amplifier

Not sure if this is a problem or not. I know very little about valves. On my WAD KT88 power amplifier there are the 4 big kt88 valves along the back and 4 small valves at the front. My potential problem is with one of the small valves. The one at the end glows brighter than the others when first swi...