tropicalrips 0 Report post Posted December 2, 2003 hi guys i hav seen quite a few threads able the Creek 11se headphone amp. most feel that this is not a good amp due to the parts used, so i hav decided to mod/upgrade it. i hav already taken it apart to see whats inside,there are 2 large caps which i suspect is for the power side. but these 2 caps which are close together hav different values i know 1 of them is 35v 1000uf but the other is smaller, can't really see its value cause its blocked, but the markings on the board shows a circle for larger caps, the one on the board looks like 35v 470uF it does not use op-amps, but has 4 chips (3 pin) which hav heat-sinks attached to them, i think they should be the sinal amplifier chips theres also 4 plastic thingy that look like tube-amps, but they are very small, no idea what they are... volume pot is alps 20k, all the caps are "Sanwa" anyone hav ideas which parts can/must be upgraded? pics to follow soon Share this post Link to post Share on other sites
tropicalrips 0 Report post Posted December 2, 2003 the whole board Share this post Link to post Share on other sites
tropicalrips 0 Report post Posted December 2, 2003 side view Share this post Link to post Share on other sites
tropicalrips 0 Report post Posted December 2, 2003 the chips Share this post Link to post Share on other sites
tropicalrips 0 Report post Posted December 2, 2003 the 4 thingy Share this post Link to post Share on other sites
tropicalrips 0 Report post Posted December 2, 2003 1 more Share this post Link to post Share on other sites
huangyong 0 Report post Posted December 3, 2003 i think you can take off the heat sink then you will know what part is that.be careful.. Share this post Link to post Share on other sites
Rameish 0 Report post Posted December 3, 2003 (edited) Those plastic tube things are polystyrol capacitors. They are not tubes! Your OBH11SE is the same version as Ting's and not the same vesrion as my former unit. As such I can't really help you further. This newer version of the OBH11SE unfortunately uses even cheaper parts then the slightly older version (except for the Alps Blue volume pot). Ask firefox if he has the time to mod it for you. Frankly, IMO they are not worth modding. If they worth it I would have done so to my former unit. Edited December 3, 2003 by Rameish Share this post Link to post Share on other sites
Firefox 0 Report post Posted December 6, 2003 There are several possible mods. Mainly involving replacing the capacitors in the signal path. However, I'd not recommend spending the money as the amp is, seriously, not worth it. Especially if you've just bought it at the new slashed-price. Share this post Link to post Share on other sites
tropicalrips 0 Report post Posted December 6, 2003 i think i will change the capacitors first to see how they sound, i'll start with the four largest ones Share this post Link to post Share on other sites
jasonhanjk 0 Report post Posted December 7, 2003 (edited) I tried adding 15 x 1uF wima poly caps at all the power caps of the Marantz 7300. Found it reduces a lot of harshness. PM me if you interest in the poly cap.... Edited December 7, 2003 by jasonhanjk Share this post Link to post Share on other sites
tropicalrips 0 Report post Posted December 7, 2003 are they the same ones in your PPA jason? the yellow color ones... Share this post Link to post Share on other sites
jasonhanjk 0 Report post Posted December 8, 2003 Yellow one cost 70 cents each. More X than this one 'cos buy in small quantity. Attach picture: Can borrow you 10 piece to try out first.... Share this post Link to post Share on other sites
Firefox 0 Report post Posted December 8, 2003 There isn't enough space under the board to bypass the supply caps. Unless you intend to drill the board and wire from beneath. The Creek, I feel, wouldn't benefit noticably from the bypassing anyway. Share this post Link to post Share on other sites
jasonhanjk 0 Report post Posted December 8, 2003 (edited) Firefox maybe is right but at least you try to mod the creek. If it does not goes better, sell it off at The classified. I plan to sell you 10 of this cap for $2.00, dunno whether is it to expensive.... edit: The width is 5mm. Edited December 8, 2003 by jasonhanjk Share this post Link to post Share on other sites
