Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => The Newcomer's Forum => Topic started by: baaron31 on April 24, 2017, 11:38:14 AM

Title: Strange amp in a suitcase
Post by: baaron31 on April 24, 2017, 11:38:14 AM
Hi,

I am new here and recently I bought this Garnet Enforcer 2 amp built in a suitcase. It seems to be a PA and musical instrument hybrid amp but definitely sound great for guitar. One channel has a very tube like break up wheres the other sound cleaner. Its got one 8'' speaker and can get very loud. The amp also has a bracket to mount a microphone stand on it.
I would like to know if there is anyone who knows a bit more about it especially if its rare and when they were produced. Garnets are very popular in my area since they were built locally (Winnipeg) but I have never seen something like this.
Thanks.
Title: Re: Strange amp in a suitcase
Post by: Enzo on April 24, 2017, 11:59:45 AM
You hid the jack labels in the closer photos, but the wider shot looks like the inputs are MIC and PHONO, is that right?   I would expect those two inputs to have different sensitivities and tonal profiles.
Title: Re: Strange amp in a suitcase
Post by: baaron31 on April 24, 2017, 12:06:49 PM
Hi Enzo, you are correct. The other jack input reads "Phone/Tape".
Title: Re: Strange amp in a suitcase
Post by: baaron31 on April 24, 2017, 12:15:19 PM
From what I gather Garnet made Enforcer amps from 79-82 but those were tube amps. On their production data there is no mention of an "Enforcer 2".

The knob used on this amp definitely dates it as a post 1975 amp. It also has two 3.5 jack outlets on the case next to the speaker.
Title: Re: Strange amp in a suitcase
Post by: J M Fahey on April 24, 2017, 01:12:22 PM
Probably a custom build or small run production focused on travelling salesmen and such.
Besides the front panel, they don´t seem to have invested much time in it: cheesy power supply built on perfboard with two transformers in parallel (were they on sale?), using a store bought prebuilt amp module , minimal passive input circuitry built on tagboards, this amp didn´t even deserve its own PCBs.
Anything else, only a local guy would know.
Title: Re: Strange amp in a suitcase
Post by: baaron31 on April 24, 2017, 02:15:50 PM
Thanks J M Fahey. I have tried to see how it would sound using an external speaker cab but as soon as i put a lead into the speaker out jack i get a terrible feedback hum. I thought it was a grounding issue cause the plug only had two prongs so I replaced the plug with a 3 pin end but i am still getting the same loud hum.
Anyone knows what the issue can be?

Title: Re: Strange amp in a suitcase
Post by: J M Fahey on April 25, 2017, 12:59:07 AM
Use as is and don´t get fancy  ;)
And not sure about actual function of that jack, it might be a supply jack for an externally connected device or even to feed the desk lamp or anything.
You (we)  can´t advance until you draw a proper schematic.
Not sure you´ll want to though.

Just look at older Galaxiex posts, who buys old "orphan" SS amps and draws the schematics himself.
Plenty of examples.
Title: Re: Strange amp in a suitcase
Post by: g1 on April 25, 2017, 01:42:55 PM
I don't see a speaker out jack, you don't mean the signal out jack do you?
If it is a speaker out, make sure the hum is not a DC voltage.

As far as the history of the amp, you could try contacting Garnet via their web site, Pete Thiessen is a very helpful guy who loves finding the rare models.
Also, there is a yahoo group for Garnet amps, https://groups.yahoo.com/neo/groups/garnet-amps/info where you may find something (you will need to join).
Title: Re: Strange amp in a suitcase
Post by: baaron31 on April 25, 2017, 02:08:43 PM
Thanks g1. That's really helpful. I meant the 'signal out' jack. It actually does sound like a DC voltage hum but wouldn't all channels hum if that was the case?

Will definitely join the yahoo group and contact Peter. I am sure he would have some knowledge of this.

Thanks again!
Title: Re: Strange amp in a suitcase
Post by: g1 on April 26, 2017, 12:21:18 PM
Signal out is to go to another power amp or a powered speaker.  Is it a powered speaker you are running the 'signal out' into?
Title: Re: Strange amp in a suitcase
Post by: baaron31 on April 26, 2017, 12:24:53 PM
Ok. Wasn't aware of that! I tried it in two different passive cabs and hummed. Then i tried in into the input of an old Yamaha G100 and no sound came out. I will try it into another powered amp and see what happens. Thanks again G1, your help is appreciated.
Title: Re: Strange amp in a suitcase
Post by: J M Fahey on April 27, 2017, 01:42:47 AM
Have you checked you have NO DC at that jack?

Where/what/how is it connected to?