Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84 SMI; site calma.uucp Path: utzoo!decvax!decwrl!sun!calma!smithson From: smithson@calma.uucp (Brian Smithson) Newsgroups: net.audio Subject: Re: wanted: power amp info Message-ID: <189@calma.uucp> Date: Mon, 15-Jul-85 12:28:54 EDT Article-I.D.: calma.189 Posted: Mon Jul 15 12:28:54 1985 Date-Received: Tue, 16-Jul-85 01:29:31 EDT References: <997@ulysses.UUCP> <543@psivax.UUCP> Distribution: na Organization: GE/Calma Co., R&D Systems Engineering, Milpitas, CA Lines: 43 In article <997@ulysses.UUCP> nlm@ulysses.UUCP (Nancy Mintz) writes: >We're considering an addition/upgrade to our system to allow more speakers. >To accomplish this we want to add a separate power amp for the primary >speakers (Bose 901, early series). So far the following have been suggested: > Robertson Forty Ten > APT 1 > Luxman MX100 > Belles II > Cambridge A75 > NAD 2200 > Moscode 300 > Hafler 220 > >Does anyone have strong bias for (or against) any of the above? if >so, why? I built a Hafler 200 when they first came out a number of years ago, and have been very pleased with the results. If the 220 is similar in using power FET's, then it too will have elegant, simple, rugged circuitry and good performance at a low price. I recommend buying the kit, if it is available. The 200 came with the each circuit board and output transistor array assembled on a heatsink, pretested. All that was left to do was to build the raw power supply (wow, a couple of capacitors, a large transformer, a bridge rectifier and a fuse!) and wire the power switch and speaker jacks. It's good fun and saves money on an already bargain-priced unit. If the model 200 is any indication, then you should most certainly consider the 220. -- -Brian Smithson Calma Company (a wholly owned subsidiary of General Electric) ucbvax!calma!smithson "...you'd better be prepared for the jump into hyperspace. It's unpleasantly like being drunk." "What's so unpleasant about being drunk?" "You ask a glass of water."