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Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum |
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#11 |
diyAudio Member
Join Date: Nov 2005
Location: Sweden
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Due to the more expensive shipping and custom fees Lundahl opt are more tempting too buy.
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I am looking for my system to be musical, not as I experience modern systems to convey details without feeling, as we have different references, there are no right and no wrong. |
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#12 |
diyAudio Member
Join Date: Feb 2019
Location: Lockport, IL USA
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Those prices are so low, im skeptical how they actually make a profit. It would be interesting to do some A B C comparison testing using the same amp, by swapping out with equivalent Hammond and Edcor and Antek units and printing off the same tests for each, and recording some MP3 files of each model through a dummy load to hear anything different.
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#13 |
diyAudio Member
Join Date: May 2011
Location: here
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I have bought from Matt. There is no 8 week wait. This dude ships fast!
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#14 |
diyAudio Member
Join Date: Jun 2004
Location: Pittsburgh, crumbling wasteland
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While on the subject of cheap transformers these caught my eye 1pair 3.5K Amorphous Single-ended Output Transformer for 6P6P KT66 2A3 tube amp | eBay
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#15 |
diyAudio Member
Join Date: Feb 2004
Location: Silicon Valley
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I dunno - using a conductive house clamp around the coil doesn't look like a good idea...
Correction - they're using the hose clamp to hold the cores together, and that's OK. I've been wanting to try some transformers from MPS for a while. I have one of their power transformers, and I may pony up for a pair of the 5k HiFi SE transformers Last edited by wrenchone; 23rd November 2020 at 07:48 PM. |
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#16 | |
diyAudio Member
Join Date: Feb 2019
Location: Lockport, IL USA
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Quote:
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#17 |
diyAudio Member
Join Date: Jun 2016
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The link says Amorphous.
Then it says: "The use of imported second-hand amorphous alloy sheet winding" I never knew that a sheet of material was 'amorphous'. Perhaps something lost in the translation from Chinese to English. I am not a materials expert. But I never desired to purchase any amorphous core. I missed that boat of opportunity. |
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#18 |
diyAudio Member
Join Date: Jul 2011
Location: Sofia, Bulgaria
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It looks like genuine amorphous core, although I wouldn't by this. Looks like a 1W OPT @25Hz core at best. This is why it's cheap
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#19 |
diyAudio Member
Join Date: Sep 2006
Location: Pleasant Hill, CA
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And you are right. I bought and measured them. You do not need 25 Hz from a small amp, so for 2-3W it would be good.
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!!!Warning!!! Single Ended Class-A-Holism is addictive!!! |
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#20 |
diyAudio Member
Join Date: Apr 2016
Location: Directly over the center of the Earth
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Got the spud amp built, 3.5W output. The -3dB points are at 30 Hz and 30 kHz, though there is a bit of distortion under 40 Hz. The tubes are 6T9 so it's semi-comparable to my 6SL7/6V6 SE amp with Edcor GXSE-10 OTs. At similar volume, I can't tell any significant differences.
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