Search found 20 matches

by XloydtilldeathX666
Sat Dec 04, 2010 5:12 am
Forum: HT-5
Topic: Blackstar HT-5 Tube Swap
Replies: 146
Views: 211054

Re: Blackstar HT-5 Tube Swap

I finally put in my NOS sylvania 12bh7a... Didn't mess with the bias, but it's ok cause after a/bing it, the NOS tube is actually running cooler, with no redplating, and sounds richer. Maybe a little trebly, but I could probably swap my mullard reisue that's in it now for a sovtek lps and that would...
by XloydtilldeathX666
Sun Nov 21, 2010 6:01 pm
Forum: Blackstar Amps
Topic: ht 1 head with 2/12 cab
Replies: 1
Views: 3630

Re: ht 1 head with 2/12 cab

2 16 ohm speakers wired in parallel yield an 8 ohm load. in series it would be a 32 ohm load, and ive never seen an amp with a 32 ohm output, so my guess is your cab runs at 8 ohm. get a cheap multimeter and find out if you are in doubt. its a good idea to have one around anyway. one of my stereo ca...
by XloydtilldeathX666
Wed Nov 17, 2010 9:25 am
Forum: HT-5
Topic: New owner of Blackstar HT-5H
Replies: 4
Views: 4189

Re: New owner of Blackstar HT-5H

http://acapella.harmony-central.com/sho ... 689&page=2

I just found that. That should mean unless you get an abnormally out of spec tube, that you can swap power tubes no problem. It also means what I had previously heard about the trimpots is correct.
by XloydtilldeathX666
Wed Nov 17, 2010 9:12 am
Forum: HT-5
Topic: New owner of Blackstar HT-5H
Replies: 4
Views: 4189

Re: New owner of Blackstar HT-5H

From what I gather it's cathode bias, with fine tune adjustment trimpots on the board. I'm going to look into it further before I swap the tube. There are tons of conflicting opinions on bias anyway. Essentially if you like the way it sounds and don't get any redplating on power tubes you are ok. Yo...
by XloydtilldeathX666
Wed Nov 17, 2010 7:39 am
Forum: HT-5
Topic: New owner of Blackstar HT-5H
Replies: 4
Views: 4189

Re: New owner of Blackstar HT-5H

the tubes in this thing are rugged. most of the time you wont need a retube for a long time. the tubes arent exactly the best sounding out there, but they are rugged tubes that should last a long time. if you end up needing a retube before your warranty expires, then you can get a tech to do it unde...
by XloydtilldeathX666
Tue Nov 16, 2010 7:11 pm
Forum: Blackstar Amps
Topic: Newbee has some HT-5 questions :-
Replies: 6
Views: 5664

Re: Newbee has some HT-5 questions :-

there is a reiteration of blackstar customer service in the ht-5 forum. the headphone/lineout bypasses the power section, but if it became unplugged you risk damaging the amp. you can use a dummy load instead of a speaker. here is a good artlicle on building one. http://diy-fever.com/misc/dummy-load/
by XloydtilldeathX666
Tue Nov 16, 2010 7:10 pm
Forum: HT-5
Topic: HT-5 headphone output
Replies: 6
Views: 6143

Re: HT-5 headphone output

here is a good article on building a dummy load.


http://diy-fever.com/misc/dummy-load/
by XloydtilldeathX666
Thu Nov 11, 2010 8:20 pm
Forum: HT-5
Topic: Help No Sound!
Replies: 1
Views: 2265

Re: Help No Sound!

even such a low powered amp has high voltage that can kill you dead if you do not know what you are doing. they put that there to avoid lawsuits and such. not to mention to ensure that authorized techs make the money on repairs you can totally change the tubes yourself. there seems to be conflicting...
by XloydtilldeathX666
Thu Nov 11, 2010 8:15 pm
Forum: HT-5
Topic: isf control question
Replies: 11
Views: 8859

Re: isf control question

i emailed blackstar. quick responses. i dont understand why anyone has complained about the customer service. it was top notch for sure. they sent me a video of how it is supposed to work.. the video shows it working exactly like mine. they say clockwise is british and counter clockwise is american....
by XloydtilldeathX666
Wed Nov 10, 2010 5:57 pm
Forum: HT-5
Topic: Blackstar HT-5 Tube Swap
Replies: 146
Views: 211054

Re: Blackstar HT-5 Tube Swap

also i ordered a fully tested NOS 12bh7a from yen audio.. $5 plus 5.50 shipping. only thing is i dont know the brand till i shows up.
cant beat the price