power amp module to fit in a cab?

John_P

I know I could just get one of the poweramp pedals (ehx magnum/calibre)  but has anyone tried or seen alternatives - I've got some active pa cabs and the power amp modules would be great if I could find a cheap and cheerful one.

digitalscream

Bit more expensive than you're after, but these are apparently the dog's danglies:

http://uk.matrixamplification.com/amplifier-modules/gm-50.html

John_P

That's exactly the type of thing - I figured there must be a similar but cheap n cheerful 50W version out there

FelineGuitars

I have one made by Dennis Cornell - currently lurking in a converted. Marshall 1912 cab. Thinking of extracting it to just use the cab as it is. May be what you are looking for. I'll see if I can get some pics. Failing that I could sell the cab with it in to you

John_A

Would something like this work? http://www.ebay.co.uk/itm/2-X-50Watt-Class-D-Audio-Amplifier-TDA7492-/350753926478?pt=UK_AudioTVElectronics_HomeAudioHiFi_Amplifiers&hash=item51aa902d4e

ThePrettyDamned

Isp do one, thomann stock it.

http://www.thomann.de/gb/isp_technologies_stealth_power_amp_pedal.htm

Danny1969

60 watt version is about £70 from places like CPC

ecc83

Danny1969 said:

60 watt version is about £70 from places like CPC

Sadly CPC/ Farnell no longer stock them and a quick search found no other suppliers.

They were good. I still have a 2x60watter powered by the "C" core transformer out of a Philips 2000 vcr (anybody remember those?)

But in any case I think the OP is looking for  "mains in. Watts out"? If not and he can safely construct a power supply there are shedloads of power amp modules and kits about.

You would think!! That some enterprising bod would make a small range of power supplies available? 2 x 30, 40, 55 volts at a few choice current capabilities?

Could be 50/60 Hz linear or an SMPSU, but I have never seen anything outside bare bones PCB industrial stuff?

Dave.

ecc83

If a module will do, these guys still appear to be in business...

http://www.bkelec.com/Modules/Amplifiers.htm

Dave.

John_P

John_A said:

Would something like this work? http://www.ebay.co.uk/itm/2-X-50Watt-Class-D-Audio-Amplifier-TDA7492-/350753926478?pt=UK_AudioTVElectronics_HomeAudioHiFi_Amplifiers&hash=item51aa902d4e

Thats exactly the type of thing I had in mind - a UK supplier would be better though

John_P

FelineGuitars said:

I have one made by Dennis Cornell - currently lurking in a converted. Marshall 1912 cab. Thinking of extracting it to just use the cab as it is. May be what you are looking for. I'll see if I can get some pics. Failing that I could sell the cab with it in to you

I already have a cab (or 3) but I could be very interested in the amp or both - have a think a let me know how much you might want

Danny1969

John_P said:

John_A said:

Would something like this work? http://www.ebay.co.uk/itm/2-X-50Watt-Class-D-Audio-Amplifier-TDA7492-/350753926478?pt=UK_AudioTVElectronics_HomeAudioHiFi_Amplifiers&hash=item51aa902d4e

Thats exactly the type of thing I had in mind - a UK supplier would be better though

That's a bit deceiving, it states it can run off most laptop power supplied (typically 65 watt) but can deliver 2 x 50 watts output . Now I know class D is efficient but it can't put out less than it use's. 

John_P

ecc83 said:

Danny1969 said:

60 watt version is about £70 from places like CPC

Sadly CPC/ Farnell no longer stock them and a quick search found no other suppliers.

They were good. I still have a 2x60watter powered by the "C" core transformer out of a Philips 2000 vcr (anybody remember those?)

But in any case I think the OP is looking for  "mains in. Watts out"? If not and he can safely construct a power supply there are shedloads of power amp modules and kits about.

You would think!! That some enterprising bod would make a small range of power supplies available? 2 x 30, 40, 55 volts at a few choice current capabilities?

Could be 50/60 Hz linear or an SMPSU, but I have never seen anything outside bare bones PCB industrial stuff?

Dave.

Hi Dave,
I could wire up a kit and a suitable supply and find a box and you're right there are loads of kits about but for this project I just wanted to buy a simple ready made box - even salvaging something from an active PA cab with a blown speaker would do the job and I thought figured there must be someone selling them.

ecc83

"Hi Dave,
I could wire up a kit and a suitable supply and find a box and you're right there are loads of kits about but for this project I just wanted to buy a simple ready made box - even salvaging something from an active PA cab with a blown speaker would do the job and I thought figured there must be someone selling them."

Lovely idea but wouldn't it be easier, cheaper and quicker to just replace the blown speaker?

That said, you would THINK there would be someone selling a "plate" with IEC mains in, XLR etc?

Geez! The "stuff" that needs making for the band and home recording market! IF I were only 25 again NOW, I would be a miwyonaire by 30 Rodney!

Dave.

steamabacus

Thomann do their own brand amp modules, too...

http://www.thomann.de/gb/the_tamp_pm40c_endstufenmodul.htm

John_P

steamabacus;332499" said:

Thomann do their own brand amp modules, too...



http://www.thomann.de/gb/the_tamp_pm40c_endstufenmodul.htm

Perfect! Well spotted :-)

ecc83

John_P said:

steamabacus;332499" said:

Thomann do their own brand amp modules, too...



http://www.thomann.de/gb/the_tamp_pm40c_endstufenmodul.htm

Perfect! Well spotted :-)

Hang on a tick! Is that amp unit self powered directly from mains? I cannot find any other details about it.

Then, it is only 40W and that into 4 Ohms. Class D amplifier power falls off super rapidly if you use higher than rated impedance speakers.

Not saying it "won't do" but caveat bloody emptor!

Dave.

Van_Hayden

Check out Hypex and Icepower class D modules. Both very good, you can sometimes get Icepower modules on ebay and they are self contained with an onboard Powersupply.

Van_Hayden

I might have a spare Icepower somewhere if you get stuck.

Richardj

Are we talking essentially one of these - http://www.hotroxuk.com/tech-21-power-engine-60-amplifier.html - they come up on the 'bay every so often and aren't silly money for the quality.

Fuzzdog

I took a faulty old 80's 1x12" solid state 100w combo, stripped all the guts out aside from the (perfectly functional) power section.  Fitted one solitary big volume knob on the front, and I used to run an AMT SS-11A into it.  I still keep it around, as it comes in handy surprisingly often!