... When it was released, The Quad 405 engendered quite a lively debate about the current dumping principle, including how it worked and whether it worked at...
Well I think the technique is reasonable, in fact I have seen claims that the mono preamp is a better piece of work than the Q22. Clearly the sale and the...
There are also good discussions in any of John Linsley Hood's three books and in Self's power amplifier handbook. After 30 years in production and five models...
The MAC MOD 405s are Steve McCormack's first effort in amp "design"/modding,are considered to be very good sounding,have been measured at 156 watts at 8 ohms...
Shipping is 100$ to the UK.I can sell the pair for 500$.Currently there seem to be 2 pairs on audiogon-for 550$,and 650$. My yahoo email may not be working-so...
Are there some new ones coming out given the extent to which dealers seem to be dumping them desperately at the moment? I can see 12's for £250. Anyone know...
Hi All, I've finally got hold of a second 303 that matches (almost) the age of my original 303. I want to drive each speaker with one power amp. I'm about to...
Hi, If you want to use them as parallel monoblocks you should: - Add a trimmer potmeter of 5K lin with both ends to the 2 inputs of the drivers and the central...
Hi, I remember several people were looking here for the hard-to-find instruction book & schematic for the Quad 510. Finally I bought one from Quad. If you want...
There is a zip file in the Files area containing a copy of Quad's original instructions for bridging the 303. That might be just what you need as guidance. ...
Can you tell me who's selling 12Ls for £250? I can find many shops selling 11Ls for £200 but none sells 12Ls that cheap. ... From: timothyharnett To:...
www.superfi.co.uk . They're UK based. £200 for 11LS is also excellent. I think a lot of people will regret not buying at this level. ... selling 11Ls for...
... Thanks for that! Just one problem. I have no idea of what they mean or how to implement them. I used to be a simple biochemist, now I'm just simple. Tony...
I've got a little box which has the pot on a bit of project board.There's one lead in and two out to the inputs of the 303. It's hardly professional but it...
I've been a happy owner of the 306 and 606 amps for a few weeks now but one thing's being bothering me. When I switch on the power amps I hear a loud thump...
Hi, You are best to turn the amps off when done listening. Leaving them on is very poor advice! This is from a realistic service perspective and many years...
Hi, all, It is not a good practice, indeed, to leave the amps on when not it use. It reduces the life-time of several components and it eats electricity for...
Hello, I think you all got me wrong here. As described in the manuals, one leaves the PA, tuner and CD on and switch the whole bunch with the pre amp. This is...
Hello all, thanks for letting me join in. I've just bought a Quad 77 integrated amp with no manual. Does anyone know where I could get a photocopy or pdf?...
Hi, Thanks for all the replies and advices. So I guess it's just the way these amps were designed. I'm not much into electronics just yet but how about my...
Hi Mike, Where do I get this box from, it sounds like just the job for when I get my old 303 serviced. I've got the new(er) 303 now and it sounds better than...
My original 303, which I bought in 1978, had a switch on thump since new. I've just acquired a slightly later model, 77xxx as opposed to my 73xxx, which has no...
Hi Tony, The box and pot advice only applies to 8-16Ohm speakers. A different arrangement is needed for low impedance speakers. Are your speakers bi wirable if...
I am finishing up rebuilding a pair of USA Monitors using materials from the ER Audio kit and the whole (involved) process got me thinking about variations on...
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