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1: High Efficiency Speaker Asylum, RE: Karlson coupler and K-tube Army Kount 1-16 (0.00)
Posted by Volker on 2021-08-22, 12:25:54 (89.183.232.79)
5 years ago .... count me in! .......
2: OTL Asylum, RE: OTL amps in contrast (0.00)
Posted by Volker on 2021-05-05, 11:18:52 (89.183.232.50)
"I once visited Harvey Rosenberg in his home and he said: "We will gladly publish the circuitry. Anyone that tries to build one will find out that it is a self-destructing booby-trap. It took us more .......
3: High Efficiency Speaker Asylum, RE: Altec 902-8T measuring question (0.00)
Posted by Volker on 2021-02-05, 10:08:16 (89.183.230.139)
Check for corrosion of the cable connector screw contacts and the push on connectors at the diaphragm, i have seen the same dissimilarity on a pair. After cleaning, dc resistance got similiar. ::: TOP .......
4: High Efficiency Speaker Asylum, RE: All the world's a sound stage.... (0.00)
Posted by Volker on 2021-02-05, 09:38:12 (89.183.230.139)
Hello Freddy, a practical question from a new X15 builder: Should the edges of the wings be rounded, baffled or left as cut? Does it make a difference? Volker .......
5: OTL Asylum, RE: There are always solutions. (0.00)
Posted by Volker on 2021-01-01, 11:50:49 (89.183.231.168)
The output capacitors in a Futterman type amplifier (SEPP) need to have the same voltage rating as the power supply caps. In case one of the upper bank tubes shorts out, bias fails or something else g .......
6: OTL Asylum, RE: Actually the Russian EL509s are 6P45Ss marked as EL509 (0.00)
Posted by Volker on 2020-12-22, 02:27:41 (89.183.231.218)
Due to printed circuit construction you can not simply change the compactron sockets to 6P45 magnoval. From electrical view 6P45 should work in OTL3. There is a ebay seller in Hongkong ( xulingmrs ) w .......
7: OTL Asylum, RE: Actually the Russian EL509s are 6P45Ss marked as EL509 (0.00)
Posted by Volker on 2020-12-21, 11:29:08 (89.183.230.12)
"OTL3 uses 6LF6's. Aren't these really different from EL509'" -not so much as one might expect (except different base). This were all the last great sweep tubes for big colour tv sets. 6LF6 is rated a .......
8: OTL Asylum, RE: Actually the Russian EL509s are 6P45Ss marked as EL509 (0.00)
Posted by Volker on 2020-12-18, 00:44:09 (89.183.230.26)
I have built a pair of Futterman H3AA/Nyal OTL3 clones with 6P45S and they work perfect with this tube. .......
9: High Efficiency Speaker Asylum, RE: Need to find Altec 288c to JBL horn adapter (0.00)
Posted by Volker on 2007-06-20, 00:58:03 (62.206.129.101)
http://cgi.ebay.de/Hornadapter-fuer-Altec-Driver-1-4-auf-2_W0QQitemZ220122355917QQihZ012QQcategoryZ22062QQssPageNameZWDVWQQrdZ1QQcmdZViewItem This should work, but please check with the seller. Regard .......
10: Tube DIY Asylum, DIY ALTEC1570 Driver question (0.00)
Posted by Volker on 2006-11-07, 03:42:46 (62.206.129.101)
I am building a pair of Altec1570 clones. The center tapped choke in the original amp driver stage has a dc resistance of 2*127 ohm. The chokes i have on hand have a dcr of 2*320 ohms. With a current .......
11: High Efficiency Speaker Asylum, EV Interface Delta (0.00)
Posted by Volker on 2006-05-12, 01:35:23 (62.206.129.101)
Hello, i want to build a pair of EV Delta (or Sentry6)clones. Can someone tell me the internal enclosure volume and the clearance between woofer baffle bpoar and base plate? Thanks to all in advance .......
12: Tubes Asylum, Moscode Minuet in A tube question (0.00)
Posted by Volker on 2006-01-09, 02:41:11 (62.206.176.181)
Hello, can someone tell me which tubes were originally used in " Moscode Minuet in A" ?. I bought one used with 4 6DJ8 tubes in it. Heater voltage in phono stage is 12V, the tubes are glowing bright. .......
13: High Efficiency Speaker Asylum, Many Thanks Tim for the info ! (NT) (0.00)
Posted by Volker on 2005-07-28, 03:25:21 (62.206.176.181)
.......
14: High Efficiency Speaker Asylum, Onken le Petite versus le Grande (0.00)
Posted by Volker on 2005-07-25, 01:18:17 (62.206.176.181)
Hello, i want to build a pair of onken enclosures and have Altec 416-8c and 414-8b drivers for them. Question to all who have heard both - which will sound better, the larger onken with 416 or the sma .......
15: OTL Asylum, Thank you! (0.00)
Posted by Volker on 2005-07-21, 02:10:02 (62.206.176.181)
Many thanks to both of you for kind information! Project is close to finish. Volker .......
16: OTL Asylum, Futterman H3aa component layout (0.00)
Posted by Volker on 2005-07-17, 23:48:40 (62.206.176.181)
Hello, i am currently building a pair of H3AA clones with EL519s. I am looking for a closeup photo of the underside of an original H3AA to study component placement and wire layout. Any information co .......
17: OTL Asylum, Re: Futterman H-3 (0.00)
Posted by Volker on 2005-07-14, 04:16:31 (62.206.176.181)
Hi,i am currently building a pair of H3AA monoblock clones. Can somebody put a photo of the underside of the H3AA on the forum? This would be very helpfull for planning the parts layout and cabling sc .......
18: Vintage Asylum, EAR509 - Bias current / Power Supply Cap size (0.00)
Posted by Volker on 2004-11-25, 03:48:17 (62.206.176.178)
Hello, i am rebuilding a pair of EAR509s. Can someone tell me the correct bias current for the output tubes? One old post claimed "600mv" but without stating the value of the cathode resistor. Maybe t .......
19: High Efficiency Speaker Asylum, Re: Jensen Ultraflex / Altec 416C (0.00)
Posted by Volker on 2004-11-08, 05:51:23 (62.206.176.178)
Hello Tim, many thanks for your information, Volker .......
20: High Efficiency Speaker Asylum, Jensen Ultraflex / Altec 416C (0.00)
Posted by Volker on 2004-11-05, 02:22:05 (62.206.176.178)
Has anybody tried the Altec 416 woofer with the rectangular Ultraflex enclosure as displayed on http://www.studiomaudio.com/onken.html Fig.2 ? Original 360L Onken is too large for my room and i wonder .......
21: High Efficiency Speaker Asylum, Re: Karlson -- why? (0.00)
Posted by Volker on 2004-10-05, 04:26:31 (62.206.176.178)
Normal speaker calculation process relies on the vas parameter. What will happen if i put drivers with different vas (for example Altec416: Vas = 650l, JBL E145: Vas=250l) in the same K15 enclosure? : .......
22: High Efficiency Speaker Asylum, Re: EV Sentry III (0.00)
Posted by Volker on 2003-08-26, 01:48:23 (62.206.176.178)
Hello Toralf, if you give me your mail-adress i will send you a scan of the plans Volker .......
Found total of 22 records, Query: , Author: Volker in All Forums, Time: 0 sec.