DAT-heads Digest #432, Volume #7 Sat, 26 Mar 05 11:50:02 EST Contents: interpol atlanta (Tim Dignam) for digest - DA-P1 gain structure mod and noise reduction ("ben d") ISO - Sting - Broken Music Tour (USA) ("Rogier van der Gugten") Re: upcoming surround recordings and dvd authoring tools... (Dave Chapman) Finn Brothers (Greg Weston) Phish Tree one more time? ("Gary Davis") Robyn Hitchcock ("K.A. Long") ---------------------------------------------------------------------------- From: Tim Dignam Subject: interpol atlanta Date: Fri, 25 Mar 2005 09:17:31 -0800 (PST) Did anyone tape the interpol atlanta show from 03/22/05? I'd be interested in trading for the show. Thanks, Tim __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ ------------------------------ From: "ben d" Subject: for digest - DA-P1 gain structure mod and noise reduction Date: Fri, 25 Mar 2005 17:27:37 +0000 i recently got a Tascam DA-P1 and read that there used to be an Oade mod for gain structure. Coming here, i saw a posting from just over 5 years ago about the removing of the 110 ohm parallel resistors on the input, and increasing the pad resistances to reduce the levels. (see below for previous postings) i am fairly inexperienced electronically and would just like to clarify a few things, does anyone know which capacitors mentioned should be put in and where (noise reduction), and also any tips on where i should be looking, i know if you open one up, from the top, the is a small circuit board on the right , above the XLR inputs, and it is here that the R529 and 629's seem to be, but where would i put the capacitors in? this mod seems too good to pass up if you are running hot signals. Although i won't try it right away. Also, any tips on soldering and unsoldering the chip resistors. i get the impression Doug Oade did his neck in doing as much! any info or tips on this would be appreciated. i'm venturing at my own risk. Thanks Ben From: Hawker Subject: RE: Tascam DA-P1 Problems Date: Thu, 19 Aug 1999 09:32:30 -0400 I think I posted this to the subscribe addy and not the post the first time sorry if it makes it twice Shawn the DA-P1 has a gain structure that is different than you would expect. (For all those who know this info I have a Mode to fix the Gain below) 1) The gain knob does not change the gain of the Mic Pre as most properly designed Mic Pres do. Rather it is attenuative only! The Mic pre has two fixed gain settings (0 and -20 pad). The Volume control comes after the mic pre and is a passive attenuation. So if the level is to hot at the mic pres it will clip. No matter where the level knob is. The setting is then counter-intuitive from the way you would set say a normal outboard mic -pre. Rather than wanting the gain knob as low as possible the best SNR is when the gain knob is at 10. If it is to low it means the signal is VERY hot before it and clipping b4 it hits the knob. In practice I have found that if that knob is set below 3.5 you are getting distortion. 2) The 20db pad is not a pad. This is actually changing the gain of the front end to be 20db less actively. It is not a pad, only causes the front end to provide 20db less gain. So don't think of this with the negative connotations of SNR etc that you normally would with a pad. It is not a pad. All this said you will probably find that you are normally running pad on with the level knob around 5 or so (depending on mics etc). And that running without the pad won't happen even in acoustic settings. For this reason some "other companies" are charging folks to change the gain of the DA-P1. Here is the mod. ============================================= For 6db mod (reduces mic pre gain by about 6 db) Need 2 0805 (size) 1.34k 1% resistors if you have a bunch of them hand match them with a VOM to the closest value. Open the DA-P1 case.. In the Mic Pre section Remove R529 and R629 These are 110 ohm resistors. There are two 110 ohm resistors in parallel for 55ohms. Removing one leaves it at 110 ohms which is a 6db difference. This is the Pad off gain. Remove R516 and R616. Replace with the 1.34k resistors. This is the Pad on setting Note changing R516 and R616 to 2.23K makes a 10db mod. To figure out different gain mods the gain formula of the front end is 20 LOG (3.9K / R) where R is the resister you are changing. Stock is 55ohms and 620 ohms or 37.0dB and 15.97dB. You can use any value 0805 resistor to make any gain change you want with this formula. Also note that on newer models Tascam left out a pile of the 0805 X7R .1uF bypass caps around the mic pre. You may want to get a pile of these and put them back in. It helps noise and stability a bit. Hawker >From: "Shawn W. Carlyle" >Hey now DAT-Heads Im hoping for some kind advice. Ive been taping since >'94 but Ive recently upgraded to a Tascam DA-P1. I ran this deck for the >first time at the "Summer Session" . The problem is that all four sets had >major distortion. I use AKG 391s, and plugged them in directly to the deck >with the 48V phantom power. I did *not* use the 20db pad, nor the limiter. > I kept my levels fairly conservative (the closest I got to zero was >11 on the Tascam display), so my first question is this: Is it common among >people who tape phish, widespread etc. with the DA-P1 to use the 20db mic >pad? I really didnt anticipate that the signal would be strong enough to >overload the XLR inputs--it was a fairly small venue. ------------------------------ From: "Rogier van der Gugten" Subject: ISO - Sting - Broken Music Tour (USA) Date: Fri, 25 Mar 2005 19:08:14 +0100 Hi there, Is anyone planning to record any of the upcoming Sting shows in the US?: http://www.police.cybercomm.nl/tour-s09.htm Please let me know! Take care, Rogier. Rogier's Police Page: http://www.police.cybercomm.nl/ e-mail: gugten@cybercomm.nl ------------------------------ From: Dave Chapman Subject: Re: upcoming surround recordings and dvd authoring tools... Date: Fri, 25 Mar 2005 18:20:26 +0000 Nick Zuccaro wrote: > hey there, i'm going to do MMW's cleveland, columbus, and > pittsburgh shows in blumlein stereo that i'm going to convert > into surround recordings - only thing is i don't have any of the > dvd authoring tools to be able to burn the final surround > recording...so i'm looking to partner up with somebody that i > can send _either_ the 2 channel masters to, or do the matrix > myself and send 5 channels (or 5.1?) to and have them burn a > dvd-v of the master in surround....the rig i'll be running is > akg c414(blumlein)->v2->minime and i'm doing atleast the > cleveland and pittsburgh shows, possibly columbus too...i think > i'm going to do 48/24 format (vx pocket limited) and do the > final dvd in video format (not dvd-a) as linear pcm. > suggestions?? so if you've got the tools and the interest drop > me a line...l8r...Nick Firstly, I don't think that you will be able to do this using uncompressed LPCM with DVD-V. 6 channels of 24-bit/48KHz uncompressed LPCM requires 6,912,000 bits/second. The DVD-Video spec limits the audio to 6.144Mbit/s. You could use 16-bit/48KHz or AC3/DTS lossy compression, but that's not an ideal solution. DVD-Audio allows up to 9.6Mbit/s of uncompressed LPCM audio, and your 24-bit/48KHz 6-channel recordings would be under that limit. On a standard 4.7BGB DVD-R, you could fit about 100mins of 24/48/6-ch, more if you only used 5 channels. As you probably know, the cheapest commercial DVD-A software is Discwelder Bronze (about $99 USD), and that will burn a DVD-A with 6-ch 24/48 audio. Alternatively, I'm currently in the process of developing an open source, cross-platform DVD-Audio authoring application. Currently it can only deal with 16-bit mono or stereo audio (at any samplerate from 44.1KHz up to 192KHz), but 24-bit and 6-channel will be implemented soon. The project home page is here: http://dvd-audio.sourceforge.net/ Hopefully by the time you have mastered your recordings, my program will be able to author 24-bit multichannel files. Dave. ------------------------------ From: Greg Weston Subject: Finn Brothers Reply-To: Greg Weston Date: Sat, 26 Mar 2005 02:27:54 -0800 Once again I'm looking for ANY recent Finn Brothers (or related...Neil Finn, Tim Finn, Crowded House, Split Enz, Betchadupa, Largest Living Things, ALT, etc.) on DAT or CDR. Have lots to trade! Thanks! timbergreg@gmail.com OR gregweston@frenzmail.net ------------------------------ From: "Gary Davis" Subject: Phish Tree one more time? Reply-to: g@hoxnet.com Date: Sat, 26 Mar 2005 04:45:29 -0800 Hello all heads... I would like one more time to try to setup a tree for the Lemmonwheel set that Whit and I remastered (from fob) a few years back. It's about 10 CDs or one disc in MP3 and with Phish gone (forever?) maybe we have time to do this now. I am looking for one person who can setup a simple website and then setup an email address (preferrably not web-based, so you can load the emails directly into your computer and manipuate the data to make a tree), and finally make a tree and post it and email it. I will NOT take direct requests for the 10 disc set but I will consider some B&P's for the single-disc MP3 version. But I have some nice sample files for a website and it would be fun to try an old-fashion tree. --thanks ---Gary P.s. we do NOT have to advertise this on any groups other than DAT-heads if you want to keep the tree size more managable. ------------------------------ From: "K.A. Long" Subject: Robyn Hitchcock Reply-to: Date: Sat, 26 Mar 2005 11:45:09 -0500 Hello, I'm looking to trade or barter for a copy of the Annapolis show this past week or any of his past work. I have an eclectic collection to trade from. Thanks in advance, Kim ------------------------------ ** FOR YOUR REFERENCE ** To unsubscribe from this digest, please send email to dat-heads-unsubscribe@datheads.phish.net If your email address has changed, you may (optionally) send the message to dat-heads-unsubscribe-oldaddress=olddomain@datheads.phish.net and the old address will be removed. Problems or questions about a subscription should be addressed via these avenues and then if needed to dat-heads-owner@datheads.phish.net or postmaster@datheads.phish.net never the list itself You can submit a message for inclusion in the next digest via this address: Internet: dat-heads@datheads.phish.net Archives of DAT-Heads digests and related files are available on the DAT-Heads home page: http://www.solorb.com/dat-heads/ End of DAT-Heads Digest ******************************