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Everything posted by Valentin Hogea
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The Anax 2.0 is a huge improvement compared to Anax 1.0/Tyll's. Much more coherent in the bass. Flatter. Also the ringing in the 5kHz-region is completely gone. No more harshness. Highly recommend it.
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Tran! How much is the aproximative cost for T2-case and misc. hardware (you provide) for it?
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Added my interest for T2-case parts
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KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
Hi guys! Need some advice on 2 caps for the DynaHi-boards... 1st] WIMA (most likely) film caps 0,47 uF. 1 per board. What voltage rating and tolerance? 2nd] 0.1 uF film cap2 per board. What voltage rating and tolerance? And a secong thing... The bridge 512-KBL02 is obsolete. Any tips on a replacement? --- Why can't I mount them like that with a 3U-case? I've seen several other builds like that? Please explain as I'm a novice. Regarding the KG Attenuator, some resurrected interest in making new boards might have appeared. Check the thread and show interest if interested... --- I'm thinking of doing a 5U Dynahi/DynaPSU-build with the boards stacked on each other with 80-90 mm screws between the boards like this: -
Thx!
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Any tips on a replacement bridge instead of http://se.mouser.com/ProductDetail/Fairchild-Semiconductor/KBL02/?qs=sGAEpiMZZMtQ8nqTKtFS%2fLDhWhDI65nsFSJ6lLatRB8%3d for the DynaPSU?
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How many are needed for a minimum?
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Anyone has any spares? To use with Balanced Dynahi-build. Both populated (even used) and unpopulated boards are fine! Thx! V
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KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
Ok... KG's digital attenuator sounds interesting... Tell me more As in remote control compatible? Because I plan to use the Dynahi as a high-efficiency speaker amp too (for bookshelf speakers). /V -
KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
Not much left on the boards... Waiting for some SAND from bdent... Somehow missed to order: Electrolytics 3 big and 3 small on the DynaPSU x 2 470 uF/35V on the DynaHi. I installed 470 uF/63V which I had ordered wrong. Shouldn't be a problem I guess. Waste of cash... But hey. At least they're put to use. So 6 extra... 2 different bridge rectifiers on the DynaPSU x 2 1MOhm-resistors... 4 x 10 kOhm trim pots x 2 on the DynaHi x 2; Anyone have a part no for the vertical ones? I somehow ordered the horizontal one... Film cap (WIMA) on the DynaHi x 2 And I need to figure out what 20 KLO and KDT are... Dual Tracking? I thought they were resistors and stuffed wrong... -
KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
So I just got some old 1982-made Toshiba 2SA1145Y and 2SC2705Y. And now I'm looking at my Mouser-ordered 2SA1145-O. nd I was thinking. Wait, what's the difference except being 25 years newer. Well that O and Y. hFE classification O: 80 to 160, Y: 120 to 240 And after reading that in the data sheet. I still can't fathom, which is "best"? Neither? Or should Y's be used with Y's and O's with O's etc? orry, very new to the whole transistors-thingie. Cheers, V -
KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
This might be a moronic question (but bear in mind that I'm a total newb in amp design and I'm trying to learn)... But will it sound the "same"? -
KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
https://se.mouser.com/ProjectManager/ProjectDetail.aspx?State=EDIT&ProjectGUID=f7619cf8-8316-490a-829f-741227db9ce9 http://se.mouser.com/ProductDetail/JAE-Electronics/SRCN6A21-16S/?qs=sGAEpiMZZMvwyOPDUMfDH5gn/EwOZw6DcRDCXriNW8o= http://se.mouser.com/Search/ProductDetail.aspx?R=SRCN2A16-7Svirtualkey65610000virtualkey656-SRCN2A167S PERFECT! -
KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
More like this: http://www.ebay.com/itm/Electrical-Deck-7-Pins-250V-10A-Aviation-Circular-Connector-Adapter-/181034344077?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2a267cde8d But with an appropriate equally sturdy wall-mountable neutrik-like receiving side. -
KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
http://se.mouser.com/ProductDetail/Amphenol-Industrial/97-3107A-14S-6P/?qs=sGAEpiMZZMv%2fye0hRulZR7Hv1MjqEjMsBwm8X4dldec%3d Any tips on a similar? Metal construction. Not too bulky connector, etc? I appreciate the help guys. The HARWIN-ones looked nice, but a bit too bulky. I'm looking for something more "classy" but well-built. Thx! -
I just found a local source in Sweden (a retired Ericson-employee) that had a lot of silicon gold. He only allowed me to purchase 50 pieces of each. I got some of them reserved for me and Chris (shipsupt) but I'll try to help those in need. Selling for what I purchased them for: 2SC3381-GR 4 USD/piece 2SA1349-GR 4 USD/piece 2SA1145 2 USD/piece 2SA2705 2 USD/piece Add 4,4 USD for S&H (add an extra 13,2 USD for tracking) Very limited supply, so I'll only be selling to those in "need". Qty for 1 to (max) 2 amps/user. Don't abuse it, since it'll take a lot of time for PMs and packing etc. It's more about contributing to this community. Kind regards, V
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What did I miss? (1) The topology was copyrighted (2) The specs were purely bs or (3) Something else?
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KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
So 2 x 72 VCT @ 2A with extra windings for driving both PSU boards? -
Well... First impression means a lot, but from my point of view (which isn't worth much) I'd like to see/hear if he can be more elaborate than just a picture and a word. /V
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370 USD incl. all components. Anyone with a bit more experience want to comment on the topology and the theoretical price/performance of this? /V
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KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
Hi Mate! I'm building both... Thx for the update on the KGSSHV trafo. Haven't ordered it yet, and yeah... I'm doing the off-board version. So what specs are correct for the DynaPSU? I used the KGSSHV detailed specs as a "base" that you could explain from... -
KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
Don't have that much knowledge on transformers. But I have these specs for the KGSSHV. 450VAC output for +/-500VDC rails Sumr part #: RC0100 050 3 100VA / 117V primary 230 V primary 2 x 450V (@125mA output ea) secondaries 1 x 30VCT (15V-0-15V) 10VA secondary Core band Static shields Would the correct specs be 4 x 72 VCT (36V-0-36V) @ 2A each secondaries? Yeah, I'll be using 2 PSU-boards. /V -
KG Balanced Dynahi build discussion thread
Valentin Hogea replied to Vortex's topic in Do It Yourself
Thx guys! What specs should the transformers have? /V -
Is the Fluke 117 good enough to bias KGSSHV and Dynahi/Dynapsu? Found a second hand BNIB for about 150€...
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Matched pairs is enough! Send me a PM with how much you're asking for them incl. S&H to Sweden. Need for two boards. If you happen to have 2SC3381 & 2SA1349 for two boards too, well... That would be sweet! /V