This Blog is about revising/upgrading the vintage Quad 33 to 909 amplifiers and the Revox taperecorders. Audio electronics and High End Hifi are also absolutely "on-topic" here. All pictures on this site (except the schematics) are Copyright Dada Electronics. You can use them after a written agreement (via e-mail) with the author. For Contact-information see www.dadaelectronics.eu
Thursday, May 18, 2006
Building the Velleman K4700 in the 405
And the winner is... Hans Ausems. He will receive a box of "Antwerpse Handjes" by mail the coming days and wins a lifetime Honorary Membership of Quad Spot ;-)
Hans also built 2x 10000MF capacitors in each power-rail (4 in total) and attached the Velleman-kit to it.
Hans will write an article about his 405 revision for Quad Spot in the coming days.
Stefaan
The K4701 is a protection unit, requiring no supplementary supply, is simply mounted between the amplifier and the speaker in the speaker cabinet and disconnects the speaker as soon as a direct current appears. It is much smaller than the K4700, but for stereo, you need 2 units. It is an interesting option for the K4700(http://www.velleman.be/nl/en/product/view/?id=9237).
ReplyDeleteNow this amp is in great shape, I would like to trade it for a good drum kit! Do you want to own this amp? Have an unused drum kit? Contact me please: h.ausems@gmail.com
ReplyDelete