Build a high pass filter for amplifier
Hi! I got a an 2.1 amplifier that uses 4 ne5532's for the EQ. The sound is really great, but I have one problem. I want to cut off the lowest frequencies (0- 40hz) with an adjustable high pass filter....
View ArticleClik here to view.
Panasonic Dual bass reflex speakers
I have a few used speakers from mini hifi systems.. i wonder is this bass reflex technology implemented by panasonic is a gimmick or what? Because i find philips/sony ones sounding much cleaner and...
View ArticleHelp with AVO MK IV Meter
Greetings everyone, I just purchased an AVO MK IV yes off eBay. The meter has no continuity across the meter electrodes/is open circuit. The meter is also stock just past the zero mark--in spite of its...
View ArticleClik here to view.
The PANPIPE (Pentahorn) BLH Speaker
I originally posted this idea in the DBLH thread here (http://www.diyaudio.com/forums/full-...ml#post3506867)which was for a Double Back Loaded Horn wall-mount speaker. This is clearly a different...
View ArticleDamn, what chord is that?
I have tried many programs to help me when I get stuck getting a song right. I think this one is pretty good (best of all so far) and easy to work with. You download the plugin and saved it in your...
View ArticleBi-amping 2 1/2 way speakers
I am thinking of Bi-amping my Leema acoustics Xone 2 1/2 way speakers and have been researching how to go about this using Rod Elliot's "Benefits of Bi-Amping (Not Quite Magic, But Close)" as a kick...
View ArticleSapphire needles sound fine ?
Friends I see a good advantage in the Sapphire needles use. I do not use a lot of time my turntable and the Sapphire needles will preserve more my LPs. Have some difference in the sound quality between...
View ArticleDistorted output on Yamaha PC2002M
My daily driven amps right side channel decided to fail this morning out of nowhere, basically idling. The output is low in level and very distorted.The DC protection does not engage which leads me to...
View ArticleOTL Blocking cap / RC filter
So something I've been curious about for a while. I've been playing around with various OTL headphone amp designs and I understand the functionality of the DC blocking cap on the output. I realize also...
View ArticleBeomaster 5000 help!
Afternoon chaps! I've been given a Beomaster 5000, which powered up fine, all lights came on etc ok. However, no sound came out of it! When you plug in a speaker there was a crackle from the speaker,...
View ArticleSimple Chip Amplifiers
Just a thought... How about a nice simple good quality amplifier, based on easily obtainable, economical, minimal components, complete with power supply and tone controls, (and possibly a phono pre-amp...
View ArticleMackie Thump TH-15a
Seems as though there's a common problem with these amp modules that can be repaired relatively easily. I'm considering buying some of these for cheap and trying to repair them myself. Does anyone know...
View ArticleRecommendations for DSP
Hi all, I was advised to post this question here. I am relatively new to designing speakers. Others have recommended that I get away from passive XO at least during the design phase where it is easier...
View ArticleSerial and Parallel drivers
I know this has been asked many times before, but there are many different answers and a lot of wrong information. Is the following correct or incorrect about series or parallel drivers? If I connect 2...
View ArticlePlease pardon the noob question. need guidance
I am piecing together a system that consists of a squeezebox touch, a mini dsp 8x8 for eq and multie sub eq. I am going to build a dac(not sure whick one yet) that has balanced xlr's out. what I am...
View Articlerefurbishing a Wavetek 111 signal generator
I'm entering a new realm here of rebuilding/repairing old audio equipment. To that end, I picked up a Goldstar 9020 oscilloscope and a Wavetek 111 signal generator. Before diving into my Kenwood...
View ArticleClik here to view.
Simple analog vu-meter driver ?
Wrapping up some projects... I cased an headphones amplifier into an old tape recorder and it has a pair of nice analog VU-meters (Kyoritsu KM-86) on the frontplate. I'd like to use the meters to...
View ArticleGain for 2 Way Bi-Amp
Hi, I am currently looking to build my first speakers and I have settled on a 2-way bi-amped design. The bass/mid is a ScanSpeak 15W/8434G00 8ohm Sensitivity (2.83V/1m) = 86.9 dB The tweeter is a...
View ArticleI will sell radio tubes
1А1П 14 pcs. for $3/pcs., 1А2П 425 pcs. for $3/pcs., 1Б5-9 2 pcs. for $3/pcs., 1Б10-17 2 pcs. for $3/pcs., 1Ж17Б - 300 pcs. for $0.5/pcs., 1Ж18Б 51 pcs. for $0.5/pcs., 1Ж24Б 104 pcs. for...
View ArticleClik here to view.
Configuring an Audio Transformer for 8 Ohmsuring
I have a question regarding an audio output transformer I want to incorporate into a tube amplifier I am building. The output transformers are taken from an old Northcourt Stereo Ninety-Five...
View Article