Author Topic: Yaqin Tube Amps  (Read 48964 times)

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Offline JojoD818

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Re: Yaqin Tube Amps
« Reply #60 on: Apr 04, 2013 at 03:21 PM »
ot na tayo, pero you have to give it to the Chinese, they can imagine more things that we can not....


hindi tayo OT tony, we are perfectly on topic because that is a Yaqin mc84l. ;D

yeah they can be very imaginative, but we all can be that imaginative, I even saw an opamp based tone control trying it's guts out to supply the needed grid voltage of an EL34... some imagination...


Offline juneaki

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Re: Yaqin Tube Amps
« Reply #61 on: Apr 09, 2013 at 07:51 PM »

You are right, ymmv as always and it is a balancing act really. I guess that's where we derive our joy in this hobby's adventure...



so the lesson learned here, go for the best amplifier speaker matching....

Di na pala ako dapat lumayo eh, i already have the speakers matched with Yaqin vk 2100. I tried the Mission M72 which i used as front in my bedroom HT setup and was amazed at the new sound it gives.  I now have the highs, the mids and lows that i'm looking for.  Whoao! Robben Ford and his band seems to be just in front of me playing "Start it Up".   

Offline chiryu18

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Re: Yaqin Tube Amps
« Reply #62 on: Jun 08, 2013 at 09:38 PM »
Mga sir, tanong ko lang, kasi meron ako Mc-100b. na pansin ko lang kanina na yung cd player nasa line1, tapos na isip ko connect ng isa pa sa line2 kaso  habang nag play yung cd sa line1 tapos nilipat ko sa line2 na rinig ko pa rin yung cd player na nasa line1 pero mahina na lang na parang bumubulong. ok lang ba yung o may problema unit ko?
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Offline rochie

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Re: Yaqin Tube Amps
« Reply #63 on: Jun 08, 2013 at 10:46 PM »
Mga sir, tanong ko lang, kasi meron ako Mc-100b. na pansin ko lang kanina na yung cd player nasa line1, tapos na isip ko connect ng isa pa sa line2 kaso  habang nag play yung cd sa line1 tapos nilipat ko sa line2 na rinig ko pa rin yung cd player na nasa line1 pero mahina na lang na parang bumubulong. ok lang ba yung o may problema unit ko?


dapat walang crosstalk.

Offline JojoD818

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Re: Yaqin Tube Amps
« Reply #64 on: Jun 09, 2013 at 12:30 AM »
Mga sir, tanong ko lang, kasi meron ako Mc-100b. na pansin ko lang kanina na yung cd player nasa line1, tapos na isip ko connect ng isa pa sa line2 kaso  habang nag play yung cd sa line1 tapos nilipat ko sa line2 na rinig ko pa rin yung cd player na nasa line1 pero mahina na lang na parang bumubulong. ok lang ba yung o may problema unit ko?


tama dapat walang crosstalk sir... baka may problema lang ang selector switch...

Offline chiryu18

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Re: Yaqin Tube Amps
« Reply #65 on: Jun 09, 2013 at 01:26 AM »
Thanks, alam ko nga dapat wala eh :(.
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Offline ATJr.

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Re: Yaqin Tube Amps
« Reply #66 on: Jun 09, 2013 at 06:24 AM »
i contact cleaner mo yan, or better yet palitan na....
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Offline armymanhaha

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Re: Yaqin Tube Amps
« Reply #67 on: Jun 09, 2013 at 06:27 AM »
I think yaqin amps are plagued by this issue. I remember my Vk2100 doing the same thing din dati.
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Offline ATJr.

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Re: Yaqin Tube Amps
« Reply #68 on: Jun 09, 2013 at 06:30 AM »
it could be that the input tube is not properly terminated, yes, i believe this is a design issue, kung me iba pang naka experience...
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Offline JojoD818

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Re: Yaqin Tube Amps
« Reply #69 on: Jun 09, 2013 at 08:04 AM »
they should recall it then or offer free updates to take care of the problems...

Offline ATJr.

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Re: Yaqin Tube Amps
« Reply #70 on: Jun 09, 2013 at 09:41 AM »
i remember that american companies, like Mcintosh and the other the big one's do come up with engineering/service updates, equipment goes thru several revisions based on experience on the field.....but these are Chinese, we do not know what their after sales service look like...
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Offline chiryu18

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Re: Yaqin Tube Amps
« Reply #71 on: Jun 09, 2013 at 10:12 AM »
Puntahan ko nga yung shop mamaya para papalitan
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Offline chiryu18

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Re: Yaqin Tube Amps
« Reply #72 on: Jun 09, 2013 at 11:01 AM »
Anu din pala magiging problema kung pababayaan ko lang na may crosstalk?
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Offline ATJr.

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Re: Yaqin Tube Amps
« Reply #73 on: Jun 09, 2013 at 11:02 AM »
Puntahan ko nga yung shop mamaya para papalitan


you can also do Yaqin a favor by emailing them, state  model number, serial number of your unit.....
it would be interesting to hear what their fix is...
who knows they might even send you some replacement parts like some american companies do..
the important thing is to ask.....:D
i am sure that these complaint will not be the first one coming from you..
while i recommend replacement of selector switch, it is not a 100% cure...
go for the ceramic types, phenolic types such as those sold by deeco tends to harbor moisture...
« Last Edit: Jun 09, 2013 at 11:26 AM by Antonio Tecson Jr. »
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Offline ATJr.

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Re: Yaqin Tube Amps
« Reply #74 on: Jun 09, 2013 at 11:04 AM »
Anu din pala magiging problema kung pababayaan ko lang na may crosstalk?

pwedeng lumala or lumkas ang level ng cross talk, one simple cure, train a hair dryer on the selector switch, that might remove a lot of the moisture  ...
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Offline JojoD818

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Re: Yaqin Tube Amps
« Reply #75 on: Jun 09, 2013 at 11:17 AM »
Anu din pala magiging problema kung pababayaan ko lang na may crosstalk?

First of all, di dapat pabayaan sir so I strongly suggest to bring it back and have them figure out what is wrong. Secondly, crosstalk is like a party line or what we call "splatter" in 2-meter lingo, they're just simply annoying. ;D


Offline chiryu18

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Re: Yaqin Tube Amps
« Reply #76 on: Jun 09, 2013 at 11:24 AM »
Thanks. Sayang gusto ko panaman yung tunog nung kt88. Ang inaalala ko kasi kung lahat ng unit ng mc100b ay may crosstalk pumayag kaya yung shop na i refund ko nalang yung payment ko.
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Offline ATJr.

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Re: Yaqin Tube Amps
« Reply #77 on: Jun 09, 2013 at 11:32 AM »
depende sa terms of sale or RMA kung meron man, pero in general pwede dapat as per our DTI...
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Offline JojoD818

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Re: Yaqin Tube Amps
« Reply #78 on: Jun 09, 2013 at 11:39 AM »
Thanks. Sayang gusto ko panaman yung tunog nung kt88. Ang inaalala ko kasi kung lahat ng unit ng mc100b ay may crosstalk pumayag kaya yung shop na i refund ko nalang yung payment ko.


Wait, if the crosstalk persists even with other units then there is a major design problem there or a faulty part that was supplied to the manufacturer and used during production.

If it's not the case above then di naman siguro lahat may crosstalk sir, baka natyempo ka lang sa may problem na selector switch.


Offline chiryu18

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Re: Yaqin Tube Amps
« Reply #79 on: Jun 09, 2013 at 11:42 AM »
Wait, if the crosstalk persists even with other units then there is a major design problem there or a faulty part that was supplied to the manufacturer and used during production.

If it's not the case above then di naman siguro lahat may crosstalk sir, baka natyempo ka lang sa may problem na selector switch. [/qoute]

Sana nga sir, dami ko panaman nabasa na magandang review bago ko kinuha, tapos halos lahat nga tube roll and nag upgrade ng caps sa loob para mas lalo daw maging maganda


« Last Edit: Jun 09, 2013 at 11:44 AM by chiryu18 »
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Offline JojoD818

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Re: Yaqin Tube Amps
« Reply #80 on: Jun 09, 2013 at 11:54 AM »
Ok then. Good luck on having your unit replaced sir and happy modding.  :)

Offline chiryu18

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Re: Yaqin Tube Amps
« Reply #81 on: Jun 09, 2013 at 12:00 PM »
Ok then. Good luck on having your unit replaced sir and happy modding.  :)
Thanks. Pero kung may crosstalk talaga , refund ko nalang then bahalana si batman medyo malas sa first tube experience ko.
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Offline rochie

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Re: Yaqin Tube Amps
« Reply #82 on: Jun 09, 2013 at 12:06 PM »
Ill ask on my Yaqin FB group if some of them experience crosstalk on their 300B as most of the members owns them.i think its one of the most popular Yaqin model out there aside from the mc10 variant.

Offline JojoD818

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Re: Yaqin Tube Amps
« Reply #83 on: Jun 09, 2013 at 12:14 PM »
Thanks. Pero kung may crosstalk talaga , refund ko nalang then bahalana si batman medyo malas sa first tube experience ko.


Wag naman po sana, I feel this is only an isolated case sir. Huwag mawalan ng pag asa at higit sa lahat ipagpatuloy ang pagiging tubero!

Offline chiryu18

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Re: Yaqin Tube Amps
« Reply #84 on: Jun 09, 2013 at 12:20 PM »
Ill ask on my Yaqin FB group if some of them experience crosstalk on their 300B as most of the members owns them.i think its one of the most popular Yaqin model out there aside from the mc10 variant.

thanks, btw mc-100b po yung sa akin.



Wag naman po sana, I feel this is only an isolated case sir. Huwag mawalan ng pag asa at higit sa lahat ipagpatuloy ang pagiging tubero
sige sir tuloy ko pagiging tubero
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Offline rochie

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Re: Yaqin Tube Amps
« Reply #85 on: Jun 09, 2013 at 12:24 PM »
ohh yeah sorry mc100B pala

Offline ATJr.

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Re: Yaqin Tube Amps
« Reply #86 on: Jun 09, 2013 at 12:32 PM »
i looked at the schematics and it seems that the input signal passed thru several connectors and that could have contributed to cross talk, so it looks like this is not just a matter of switch replacement...as i earlier thought...
in fact this the first time and in this forum i came to know about this issue....
i really think you should email Yaquin directly...

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Offline chiryu18

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Re: Yaqin Tube Amps
« Reply #87 on: Jun 09, 2013 at 03:55 PM »
i looked at the schematics and it seems that the input signal passed thru several connectors and that could have contributed to cross talk, so it looks like this is not just a matter of switch replacement...as i earlier thought...
in fact this the first time and in this forum i came to know about this issue....
i really think you should email Yaquin directly...


salamat sir
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Offline chiryu18

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Re: Yaqin Tube Amps
« Reply #88 on: Jun 09, 2013 at 04:00 PM »
Pero kung line1 lang gagamitin ko or isang cd player lang, ok lang ba na ganun? May nabasa ako na ginamitan niya ng separate na pre amp since pwede mo bypass yung preamp nung mc 100b
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Offline ATJr.

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Re: Yaqin Tube Amps
« Reply #89 on: Jun 09, 2013 at 05:50 PM »
kita sa schematic na pwede naman gamitan ng ibang preamp...
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