Return-Path: Received: from mtain-dj01.r1000.mx.aol.com (mtain-dj01.r1000.mail.aol.com [172.19.187.137]) by air-dc04.mail.aol.com (v129.4) with ESMTP id MAILINDC041-86004c46e0e6ee; Wed, 21 Jul 2010 07:58:30 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dj01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 50D97380000A9; Wed, 21 Jul 2010 07:58:28 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ObXux-000668-14 for rs_out_1@blacksheep.org; Wed, 21 Jul 2010 12:56:55 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ObXuw-00065z-L6 for rsgb_lf_group@blacksheep.org; Wed, 21 Jul 2010 12:56:54 +0100 Received: from cavuit01.kulnet.kuleuven.be ([134.58.240.43]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1ObXuw-0007SN-2X for rsgb_lf_group@blacksheep.org; Wed, 21 Jul 2010 12:56:54 +0100 Received: from smtps01.kuleuven.be (smtpshost01.kulnet.kuleuven.be [134.58.240.74]) by cavuit01.kulnet.kuleuven.be (Postfix) with ESMTP id 5BBA37B804D for ; Wed, 21 Jul 2010 13:56:46 +0200 (CEST) Received: from ICTS-S-HUB-N2.luna.kuleuven.be (icts-s-hub-n2.luna.kuleuven.be [10.112.9.12]) by smtps01.kuleuven.be (Postfix) with ESMTP id 2A0F731E703 for ; Wed, 21 Jul 2010 13:56:46 +0200 (CEST) Received: from ICTS-S-EXC2-CA.luna.kuleuven.be ([10.112.11.13]) by ICTS-S-HUB-N2.luna.kuleuven.be ([10.112.9.12]) with mapi; Wed, 21 Jul 2010 13:56:46 +0200 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" Date: Wed, 21 Jul 2010 13:52:07 +0200 Thread-Topic: audio amps for LF driver service Thread-Index: Acsow+/67a5Nh2ceSXaCwpuHSA7JWwABzTx2 Message-ID: References: <0ac001cb28c3$a7b4d150$7900a8c0@athlon1200> In-Reply-To: <0ac001cb28c3$a7b4d150$7900a8c0@athlon1200> Accept-Language: nl-NL, nl-BE Content-Language: nl-BE X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: nl-NL, nl-BE MIME-Version: 1.0 X-KULeuven-Information: Katholieke Universiteit Leuven X-KULeuven-Scanned: Found to be clean X-KULeuven-Envelope-From: rik.strobbe@fys.kuleuven.be X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: RE: audio amps for LF driver service Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=TO_ADDRESS_EQ_REAL autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G x-aol-sid: 3039cdbc9d054c46e0e4684d X-AOL-IP: 193.82.116.20 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) Dave, LM384 works well at 136kHz (5W out) and the datasheet gives a BW of 450kHz= for 2W in 8 Ohm. Two of them in push-pull might give close to 5W if you accept some distors= ion. And they are cheap (less than 2 Euro) 73, Rik ON7YD=20 ________________________________________ Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.or= g] namens Dave Brown [tractorb@ihug.co.nz] Verzonden: woensdag 21 juli 2010 12:58 Aan: rsgb_lf_group@blacksheep.org Onderwerp: LF: audio amps for LF driver service I've seen comments here from time to time about various audio power amps being used for low power tx purposes - any suggestions as to whats a useful one for 136 up to 500 kHz at the 5 watt level or thereabouts? 73 Dave, ZL3FJ