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Old 28th January 2007, 09:58 PM   #1451
Irakli is offline Irakli  United States
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Default ME2/Amity/Raven System

Thanks for your nice comments guys

Quote:
I especially like the Raven 3 ... your design?? Anything with balanced inputs stands apart from the norm IMOP.
Schematics is all Lynn Olson's. I only added input switcing. Its just a bunch of reed relays. also I used different volune control principle. Instead of two variable resistors I used one connected between hot and cold balanced inputs. Much easier and cheaper.

Quote:
Also, is that a room EQ (Beringer) ??
It is an active filter. I am using it as a sub crossover, 80Hz 4th order Bessel.

Quote:
How is your midbass (150-400 Hz)? I have found mine to be somewhat light and quiet in comparision to the rest of the program material. My hope is that migrating to an Amity will give the additional punch I need.
I have more midbass than I want. Still tweaking sub integration. BTW, Amity amps for Mid/Hi using a high pass first order filter (80Hz) at the input. For sub, as I mentioned above, its 80Hz 4th order Bessel.
These subs give amazing level of bass and very clean and tight too.
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Old 31st January 2007, 02:36 PM   #1452
jore is offline jore  Taiwan
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Default my we717a pre-amp

Grade before lovely WE 717A vacuum tube



Introduction to 717A vacuum tube
DataSheet
Raytheon
[url =http://www.r-type.org/exhib/aab0012.htm]Tung-sol[/url]
Only two manufacturers Tung-sol and Raytheon made
Make times : 1943


DIY machine of Japan
717A-3C33(PP) -1
717A-45(SE)
717A-6L6_EL34-811A_808(SE)
717A-3C33(PP) -1
717A-71A(PP)
717A-205D(SE)
717A-EL156_KT88(SE)
717A-316A
717A-811A(SE)


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Original plan, the high-pressure steady voltage should adopt 6AQ5 +E80F +85A2
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717A family takes a group photo greatly
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Make the high-pressure steady voltage into GEC A2134 + EC88 + 85A2
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Old 31st January 2007, 05:06 PM   #1453
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Jore: Great photos!! Great layout and construction!!!
(Wondering if you have a design with balanced inputs and outputs?)


(Folks: I had to edit the web links above to get 'em to work = Ex: http://www.tubebbs.com/tubedata/sheets/127/7/713A.pdf )
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Old 31st January 2007, 07:54 PM   #1454
v-bro is offline v-bro  Netherlands
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Lookin' freakin' great Jore!!

You also seem to have a lifetime stock of spare toobs ....

Very neat layout and beautiful casing...

How did the glass break, or was it used to baptise it?...

Or for testing purposes?... ...

Do I see a stepped shunt attenuator in there?
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Old 3rd February 2007, 06:40 AM   #1455
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my universal amp at top se amp el38,6j5gt and gz37.
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Old 3rd February 2007, 07:14 AM   #1456
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This is my da42 se amp with da42,6sl7gtand 6sn7gt. this should run at a 1000 volts at 40ma, but I only use 517 volts at 75ma, I had to use what I had. Iv'e got a dodgy bias pot so it flashes sometimes when the ma's climb. I will get round to using 1000volts at 40ma, someday!!
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Old 3rd February 2007, 10:27 AM   #1457
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The one on the left is a p/p , using 6ch6, ef86, 5u4g and ecc82. it's in my living room now. Iam listening to it now, thro' my 2ft x 4ft planar full range speakers. Iam using a 19 dvd player, playing a mp3 on a dvd I burned myself. The Amp on the right is a se amp using only 4 valves :-2 x 6au5gt's, 1 x 5u4g and 1 x 6922. I use this with a Quad 33 pre-amp. About 5watts I think. Sounds very nice. The amp at the top is the 300a se amp.All these amps were in my conservatory, but they are all in different places now.
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Old 3rd February 2007, 01:31 PM   #1458
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This is my medium full range planar speaker under construction in the living room! I had just finished sticking the aluminium foil on. This is the hardest part on your back, all that bending over. Rip the tape and you have to start again, very boring and time consuming. But well worth it when you switch on. Even worse with neos they are a lot smaller. I am going to build a neo speaker about the same size, about a thousand magnets for the pair, the aluminium foil will be a challenge, on my back and my patience. The old planar speakers in the background with no speaker cloth on were the first pair I ever built, after seeing an article in the Hi-Fi News about 20yrs ago.
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Old 3rd February 2007, 04:45 PM   #1459
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JAMESBOS: " ... full range planar speaker under construction in the living room! ..."

Very interesting. This would make an interesting step by step DIY project we could all sink our teeth into. Got more pics?

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Old 3rd February 2007, 08:09 PM   #1460
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Yes I have got some more photos just a matter of finding them, then getting them on site. Having never done this before, I'm learning as I go along. So please bear with me! This a photo of the finished speaker. Behind it to the left is my underfloor loaded speaker. Above it is a Aiwa AP2600 Direct Drive Transcription unit. On the rack is a small part of my equipment. I am not married and live on my own, so I can please myself, lucky me, nobody to nag me!!! Iam afraid you will have to rotate the picture. The photo company put on the disc that way round.
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