Direct substitute for 2SD438 with 2SC1571?
Im unable to find the 2SD438 locally but I can get 2SC1571 ? This will be at bias ckt http://www.elisanet.fi/ch/lme49811.png
View ArticleHeatsinks..best place to get them in the U.S.?
Hey guys, looks like I am going to start collecting parts for an F5 V2 Turbo build. However, I need to know where I can get some good heatsinks as most of these amplifier cases I have seen recommended...
View ArticleWTB: Advent woofer
Need an Advent 85A-29 woofer, bad foam OK, need to refoam anyway. These were used on Maestros and (I believe) some 6003 and Legacy. Edit: please PM me in case I forget to check here regularly.
View Articleguitar amplifier
Hello guys, i wonder if someone can help me with amplifiers. I have a problem with finding scheme for high frequency amplifiers with 40W of power. So im wondering if someone can give me some schemes....
View ArticleFoam on baffles?
I'm reminded of this as I'm rebuilding an old set of Advent Maestros. Speaker makers have occasionally used various absorbent materials on their front baffles. The purpose is obvious, but it's not...
View ArticleGarrard 60 MkII good or not?
Hi people, just wondered if a Garrard 60 MkII is a good record player or not? It has a Shure M97x cartridge...
View ArticleTransistor 7805p question.
Q: What would happen if a 7805p transistor received too much ripple input voltage. Back story: On my HK avr 7000 the smoothing cap on a 3.3 and 5v line, a 10000 mf 16v cap was swollen. That feeds to a...
View Articletiny amplifier.. big speaker?
okay let's say you were to hook a 3,000 watt speaker to a 1 watt amplifier. And you turned the amplifier up all the way.. Would the speaker even make sound at all?
View ArticleWhich wiring inside speakers?
Hi All, I am refurbishing a pair of Cambridge Audio R50 speakers and was wondering which wires to use to replace the current wiring? Thanks for your help, Frank
View ArticleMaking LPs with a 3D Printer
I was so tempted to post this in "Analog Source" but the audio is digitized and then printed. And no, it's not on a (relatively cheap) reprap or Makerbot, these are printed on a high-end,...
View ArticleBig power 2500-5000watts SMPS for power amplifiers
Finally finising mine SMPS project for Audio Power Amplifiers, and not only audio, ready for selling. Is an resonant ZVS SMPS mode, soft switching. This SMPS will be made custom every client (output...
View ArticleUsing Isolating transformers in a power supply?
Probably a basic query but I want to build a Salas HV regulator and the transformer required must have a 230Vac secondary output which is the same voltage as my mains supply. I have a couple of spare...
View ArticleFree online courses
Hi everybody!! As usual (every semester), I recieve an invitation to online free courses from the most renamed Universities in US. Here is the link to this new course:...
View ArticleMTX X1000D
Amp uses IRF1010E's for the power supply fets Is there any good subs that will work ?? Gate resistors are 33 ohm
View ArticleSeparating rooms with a sheet to lower sound level?
Hey all, I'm not really sure where this post should go, so I put it here. My question is: I have a party coming up in a few days. In one room on the main floor (a large great room) I'll be setting up a...
View Article? What to do,Slight damage to Woofer ordered from MCM
I ordered 4 15" Polypropylene Cone Woofers from MCM Electronics ( MCM Part #: 55-2974 ) . 2 of the 4 speakers arrived with a slight dent on the edge of the flat part that seals the speaker to the...
View ArticleAudiolabs 8200A amp for sale dropped price.
Hello everyone. I am selling my beloved audiolabs 8200a amp. I was thinking of asking $400.00 for this amp but dropping the price to $300.00 and I will pay for shipping to 48 u.s states only. The only...
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Feedback: New LCR Design for Alpair 10.2
This design is specifically meant for home theater. I was thinking of a floor stander that could be rotated 90 degrees and used as a center channel without any changes to the cabinet in order to...
View ArticleESL headphone driving options
Hi! I have obsessed about ESL for some time and want to get around to fabricating my own. A headphone has been the target in my sights for quite some time. So I have some questions on the amplification...
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10" speaker recommendations please
I am thinking about building a subwoofer using the Decware WO original plans. Here is a link if you are not familiar with them. DECWARE's Wicked-One Horn Subwoofer I am not up to speed on good 10"...
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