Question about Music

Open Question

Hartke 7000 bass amp schematic

My input signal cuts out. Sometimes hitting a note hard cuts it back in, but there's crackling. This worked a few times, now it's not,...Compressor shows a signal when I slap.

Posted by on

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
  • 11 Answers

SOURCE: Fender Rumble 100 210 pop noise then hum after strong low e note

I just fixed my bass amp with a similar problem last week: the problem is related to a loose connection on the PCB board (likely).
A bass amp is a rough place for circuitry: the low rumble and power shake a bass amp more than a guitar amp.
In my case, the power transistors needed to be re-soldered and then the grounding bolts and screws needed to be removed and cleaned because the connection was bad. Remember that when two different metals needed for an electric connection are toughing, there is the likelyhood that corrosion WILL happen.
My bass amp did basically the same thing yours did: sounded good at low volumes, but at higher volumes it would act up.
In short, there is nothing you can do (unless you are a repair person): you need to take it to a local music shop and have a tech fix the intermittant contact problem: someone who knows what they are doing should only take an hour at most.

Hope that helps!
-mike

Posted on Mar 31, 2009

Ad
  • 153 Answers

SOURCE: Fender Rumble 100 210 pop noise then hum after strong low e note

Replace C21 (10uF/50V) and C38 (2.2uF/50V) and it will work great.

Posted on Apr 30, 2009

  • 5603 Answers

SOURCE: Hartke Ha2500 250watt Bass Amplifier Head sound

This sounds like the thermal protection is activating. Make sure the vents and heatsinks have FREE AIRFLOW. If the sound cycles on and off, it could be a failure of the heater in the one vacuum tube in the unit. The heater could cooll and reconnect and then heat and disconnect.

Posted on Nov 03, 2010

  • 5603 Answers

SOURCE: This problem has to do

Easiest way to check is to measure the resistance between the ground pin of your cord and the chasis of the unit. It should be very low. That is the only critical one... Look at a receptacle. See one bllade is wide? That is the neutral. The other one is the HOT side. The HOT SIDE should go to either the fuse or the switch first in your unit. If you have those right the third wire will be right.
When powering up an amp there often is a noise until the amplifiers balance out. Very high quality and high power amps have a relay that disconnects the speaker until balance is reached... but the smaller amps do noot have this feature.

Posted on May 02, 2011

budmrtn
  • 11361 Answers

SOURCE: No Reverb operation? New reverb unit. Output to

Sch: http://www.schematicx.com/schematic/fender-acoustasonic-junior-jr-guitar-amplifier-schematic/

Posted on Jul 08, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I need a schematic diagram with values of components for a hartke gt100 amp


Request the schematic diagram directly from Hartke.

May 23, 2017 | Hartke Music

1 Answer

Where can i find a hartke a70 schematic?


The schematic is here. http://music-electronics-forum.com/attachments/6771d1256866984-a70_sch.pdf

Jan 11, 2015 | Hartke A70 70 Watt Bass Amplifier Combo...

2 Answers

After playing a a few small gigs my husbands Hartke vx3500 bass amp cuts out with the sound BUT the head seems to stay lit up, dont have problems when a low volume but during a gig has randomly cut out for...


It has something loose on the board or where the speaker wires connect. Combo amps are really bad about doing this. The vibrations from the speakers loosen the components on the board.

Sep 03, 2011 | Hartke VX3500 Bass Guitar Combo Amplifier

1 Answer

HI just got a A70 . I love the amp, except when I hit certain low notes I get a crackle just before the note rings out. Tried 3 new cables same thing , cleaned guitar jack and checked out connections...


You are probably overdriveing the unit... In a 20 foot square room, if *********** could not stand to stay in the room, it is too loud and likely driving the voice coil outside the linear range. This makes a very nasty noise.

Aug 24, 2011 | Hartke A70 70 Watt Bass Amplifier Combo...

1 Answer

I tried to plug in a digitech bp200 pedal and then my amp went on the fritz and starterd buzzing loudly. I attempted using the effects loop section on the back of the amp with my bass direct into the amp,...


DO NOT try a guitar pedal as an effects insert via the back jacks... they are for an external line level EQ/Effects type unit. Your guitar pedal should NOT have caused any damage. Check the power adapter you are using with the BP200. The BP200 takes a 9 VAC adapter, NOT a 9VDC type common to most pedals. You cannot use one of the Pedal Train type supplies with the BP200. Also check that you have the in's and out's correct on the pedal... backwards and they will cause what you are observing.. Verify your cables are good. The output of the pedal goes in the FRONT jacks of the amp. ONLY line level drives go to the back jacks.

Jun 05, 2011 | Hartke Lh1000 Bass Amp Head 1100 Watts...

1 Answer

My Hartke A100 has a problem, no power, the problem is transformer. what is the exact volt of transformer A100 hartke? than you


Transformers don't often fail. I have heard that some of these have a thermal fuse in them and they sometimes open. If you can get to the fuse in the windings, you can replace it and save the transformer. The fuses look like a silver tube about 5/8 inch long and 3/16 inch diameter with a lead out each end, They are marked with the temp they open and are a one-shot thing that have to be replaced.

May 30, 2011 | Hartke A100 Combo Bass Amp

1 Answer

This problem has to do with a Hartke 3500 bass amp. I recently purchased a replacement UCISC (the part with the female plug and fuse box) and replaced it. I tried to be very careful putting all of the...


Easiest way to check is to measure the resistance between the ground pin of your cord and the chasis of the unit. It should be very low. That is the only critical one... Look at a receptacle. See one bllade is wide? That is the neutral. The other one is the HOT side. The HOT SIDE should go to either the fuse or the switch first in your unit. If you have those right the third wire will be right.
When powering up an amp there often is a noise until the amplifiers balance out. Very high quality and high power amps have a relay that disconnects the speaker until balance is reached... but the smaller amps do noot have this feature.

May 02, 2011 | Hartke Bass Amplifier Half Stack with...

1 Answer

Hartke Ha2500 250watt Bass Amplifier Head sound cuts off(not turns off)after a little while comes back on


This sounds like the thermal protection is activating. Make sure the vents and heatsinks have FREE AIRFLOW. If the sound cycles on and off, it could be a failure of the heater in the one vacuum tube in the unit. The heater could cooll and reconnect and then heat and disconnect.

Oct 28, 2010 | Hartke Ha2500 250watt Bass Amplifier Head

1 Answer

Amps in a seires


I'm not sure what this will do, but electrically you can hook these up. Using the line output from the swx, connect it to the line level input. I think that that would be the active input. When you connect a guitar(without a battery powered pickup) to the hartke, it goes to the passive input right? If so, then connect the line out of the swx to the active input. Reverse if the behavior is opposite of what I described.

Realise that with these two connected to each other, you will be using both pre-amp sections and the amp section of the hartke.

Dan

Mar 01, 2010 | Music

Not finding what you are looking for?
Music Logo

Related Topics:

45 people viewed this question

Ask a Question

Usually answered in minutes!

Top Music Experts

Vito Vacirca Jr.

Level 2 Expert

140 Answers

yadayada
yadayada

Level 3 Expert

76109 Answers

kakima

Level 3 Expert

102366 Answers

Are you a Music Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...