Deang Posted December 27, 2004 Share Posted December 27, 2004 Those knobs look grossly expensive. Quote Link to comment Share on other sites More sharing options...
sunnysal Posted December 27, 2004 Share Posted December 27, 2004 I like this one: I cannot find the prices for the THL knobs...anyone know? BTW please post any knob sources you know about on the web, I need to find a knob for my esotec SC-6... tony Quote Link to comment Share on other sites More sharing options...
mike stehr Posted December 27, 2004 Share Posted December 27, 2004 Nice layout on that amp, Erik. Nice touch with the capacitor clamps mounted underneath the chassis. Quote Link to comment Share on other sites More sharing options...
jt1stcav Posted December 27, 2004 Share Posted December 27, 2004 This is from THL Audio's website in Taiwan: INQUIRY & QUOTE: *Please send inquiry or specify item number or quantity that you are interested in pricing. Upon receipt of your inquiry, we will send you price or Proforma Invoice. Please advise also product's code number to help us replying swiftly. We do not promise to reply to a broad question or inquiry. *All quotes are based on currency of NT$ (New Taiwan Dollar, or refer it as TWD, Taiwan New Dollar) unless specified. You can get the conversions for local currency to NT$ or TWD from xe.com's service. I bought 3 of their polished R3825R champagne finished knobs for my amp and preamp; they were $17 each, but well made and worth it to me. Received them 8 days after order was filled! Quote Link to comment Share on other sites More sharing options...
jt1stcav Posted December 27, 2004 Share Posted December 27, 2004 What beautiful solid brass knobs! Oh Dean, now I'm pimpin' polished Japanese-made knobs on my pre...what next? Quote Link to comment Share on other sites More sharing options...
mike stehr Posted December 28, 2004 Share Posted December 28, 2004 Asian made. Dunno what $150 will get you as far as a pair of Hammond single ended universal 20W OPTs. These are nice for the price..... Quote Link to comment Share on other sites More sharing options...
Erik Mandaville Posted December 28, 2004 Share Posted December 28, 2004 Mike: Thanks for having a look. That's actually a preamp, built and modified from the schematic of an AES preamp. It was out of the system for a bit while I was using Shawn's Lexicon. Jim: you said, "...they were $17 each, but well made and worth it to me." I think this is really what matters in ALL of this. Even if someone is willing to pay lots for nice machined face plates, etc., that is entirely their business. The knobs do look good, by the way! Quote Link to comment Share on other sites More sharing options...
edwinr Posted December 28, 2004 Share Posted December 28, 2004 ---------------- On 12/27/2004 11:25:13 PM jt1stcav wrote: What beautiful solid brass knobs! ---------------- Forget the quality - feel the width! Quote Link to comment Share on other sites More sharing options...
Marvel Posted December 28, 2004 Author Share Posted December 28, 2004 This catalog has lots of high quality, machined knobs: Machined knobs Marvel Quote Link to comment Share on other sites More sharing options...
sunnysal Posted December 28, 2004 Share Posted December 28, 2004 thanks for the knob info...perhaps I will find something to match my SC-6. regards, tony Quote Link to comment Share on other sites More sharing options...
AnalOg Posted December 28, 2004 Share Posted December 28, 2004 Here's one I'd like to check out! http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5740400899&fromMakeTrack=true Tom Quote Link to comment Share on other sites More sharing options...
seti Posted December 28, 2004 Share Posted December 28, 2004 I would relly like to hear some 45 / 211 /845 tube amplifiers. The airtight 211 just looks beautiful. Quote Link to comment Share on other sites More sharing options...
Deang Posted December 28, 2004 Share Posted December 28, 2004 Buy it now for $600. You've got to be kidding. Damn. Quote Link to comment Share on other sites More sharing options...
Marvel Posted December 28, 2004 Author Share Posted December 28, 2004 Kinda cool that the schematic is actually posted there too. Quote Link to comment Share on other sites More sharing options...
jt1stcav Posted December 28, 2004 Share Posted December 28, 2004 C'mon now, Dean...some of us cannot afford VACs! Quote Link to comment Share on other sites More sharing options...
AnalOg Posted December 28, 2004 Share Posted December 28, 2004 Thats 600 bucks with tubes! I think 20 watts would be sufficient to drive the Scala's to full dynamics with some head room left over. Even after a good listen if it does'nt suit your needs, I'm sure you won't take a big loss on it. Tom Quote Link to comment Share on other sites More sharing options...
Deang Posted December 29, 2004 Share Posted December 29, 2004 Hey, I can't afford a VAC either! In fact, I can't afford any of this crazy sh!t. That amp looks really interesting, and the price is insane. It has a real preamp section, and the whole thing is completely choked out. The 20 watts is good, and will keep The Parrot at bay. Quote Link to comment Share on other sites More sharing options...
Erik Mandaville Posted December 29, 2004 Share Posted December 29, 2004 Very Clean! One great way to save cost on something like this is to use solid state rectification for both B+ and heater supplies, which, having looked at the schematic, is what appears to be the case. SS diodes can sometimes provide tighter, perhaps more ample bass response, especially if used in conjunction with hefty storage capacitance on the output of the power supply. With SS diodes, a smaller power transformer can be used since a high-current filament winding isn't needed, and there is also less heat generated overall, possibly providing a few extra years to parts that may be heat sensitive. The amp I'm building right now does use tube rectification for B+, however does use full-wave bridge solid state devices for the DC heaters in both the driver stage and 2A3 outputs. He doesn't use shielded cable (from what I can see) for input wiring, which should probably be fine, given the fact that the power supply is carefully placed on the opposite side of the chassis. For the cost it looks incredible! Erik Quote Link to comment Share on other sites More sharing options...
edwinr Posted December 29, 2004 Share Posted December 29, 2004 ---------------- On 12/29/2004 12:03:25 AM DeanG wrote: The 20 watts is good, and will keep The Parrot at bay. ---------------- Only just. Quote Link to comment Share on other sites More sharing options...
JBryan Posted December 29, 2004 Share Posted December 29, 2004 The "Music Angel" is a good-looking amp and seems to have some nice parts here and there. Its set up for 220v so be aware that it must be converted or you'll need to add a step-down transformer. I wonder where they got the metal-based 6SN7s - it looks like a "J" or "Y" branding on the base. In my experience, 845 amps have great detail and energy but the transformers must be exceptional and have good frequency range or the bass will be boomy and lack the finesse of their lower-power SET brethren. Also, the 845 tubes use very high voltages across the plates and run very hot (you can read by the light they emit). Another consideration is the noise - the company specs give a 89dB S/N ratio but those high voltages in a circuit with no negative feedback usually find their way to sensitive speakers like Klipsch. Have fun, -Bryan Quote Link to comment Share on other sites More sharing options...
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