Location: Middlesex, UK
Posts: 4,481
I'm Alex.
Location: manchester
Posts: 219
I'm chris.
If your still looking at recapping these 66's look up 'celestion ditton 66 needs midrange' on diyaudio all the information's there including crossover schematics etc, i followed these guides to redo some ditton 44's, they now sound even better.
chris
Location: east yorkshire
Posts: 527
I'm steve.
collector and DIY user of old british triode valves
Open baffles / single ended diy px4 and px25 valve amps
Location: Yorks
Posts: 16,643
I'm Nobody.
Um! new un on me that Steve, have you got a clearer pic of the front please?
Location: Middlesex, UK
Posts: 4,481
I'm Alex.
Hi SPS, thanks for the pics, I strongly suspect that someone has converted these DM1s, using a new front baffle a replacement bass unit. I have thought of doing this myself as one of my DM1's has a faulty elliptical bass unit. I have three pairs of DM1's.
If you ever open up the cabinets, I would be interested to know what the bass units look like and what markings are on them.
Spendorman
Location: Yorks
Posts: 16,643
I'm Nobody.
Hi Chris,If your still looking at recapping these 66's look up 'celestion ditton 66 needs midrange' on diyaudio all the information's there including crossover schematics etc, i followed these guides to redo some ditton 44's, they now sound even better.
That's very interesting. However, you need to be a member of DIY Audio to use the search facility, and I'm not, so could you please post a link here to that discussion?
Cheers!
Guys, I was rather busy yesterday, so will respond to all the recent replies here A.S.A.P
Marco.
Main System
Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & regulator mods]. Funk Firm APM Achromat with Nagaoka GL-601 Crystal Record Weight. Isonoe feet & boots. Ortofon RS-212D tonearm with Denon DL-103GL, in a Denon PCL-300 headshell, fitted with Funk Firm Houdini and Kondo SL-115 pure-silver cartridge leads.
Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp and Denon AU-310 SUT.
Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.
CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.
Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.
Preamps: Heavily-modified Croft Charisma-X. Power Amps: Tube Distinctions Copper Amp, fitted with Tungsol KT-150s. Quad 306.
Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.
Tube Distinctions digital noise filter. VPI HW16.5 record cleaning machine.
Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.
Location: east yorkshire
Posts: 527
I'm steve.
you clever fella...
front off... they have been re done...
my camera is crap...
the bass driver says on it 17-fgwb made 3.81 made in norway
tweeter i would guess is celestion... T1295
the small tweeter just says tu (could be vu) 29a
the pictures show the rest... thanks for the info...
i have a few emi's spare? not sure if they fit the dm1
where the two tweeters original and the just the bas verion of the emi, i would also guess its not the 13x8 ones i have.
cheers
steve
collector and DIY user of old british triode valves
Open baffles / single ended diy px4 and px25 valve amps
Location: Middlesex, UK
Posts: 4,481
I'm Alex.
Your tweeter's and crossover look original, tweeters: Celestion HF1300 and Coles 4001G, exactly the same as in DM4, DM2, Spendor BC1 etc. Your crossover is the later one as it has the mod to reduce slightly the output of the 1300 tweeter.
The original DM1 bass units were EMI 10"x 6" with a special fibreglass laminated cone, similar in construction to the 13"x8"
Your bass units may be VIFA / Seas, usually good units
Spendorman
Location: manchester
Posts: 219
I'm chris.
http://www.diyaudio.com/forums/multi...mid-range.html
Heres the link, i recommend that you join i think its free, just so you can follow the diagrams, theres also recomendations for capacitors/resistors to use.
chris
Last edited by reddish75; 23-02-2011 at 12:24. Reason: add link