Mono Battery powered Amp

inrank · 31st July 2007, 04:44 PM

not sure if this is the right area to post this, but...

i want to make a portable retro style 'boom box' with a single 10" Hawthorne Audio Silver Iris driver, that accepts a 3.5mm input from a portable DAB/ Ipod etc. just needs a volume control and a single output to the speaker.

anyone know of any cheapish Mono Battery amps, preferably in a kit or something

any ideas?

marthaman · 1st August 2007, 11:30 PM

The specs on that speaker show that it can handle 150 watts (http://www.hawthorneaudio.com/drivers.htm). I'm not sure that you'll be able to drive it as a boom box with a battery powered amp. Perhaps I've misunderstood your post.

leadbelly · 1st August 2007, 11:36 PM

Quote:

Originally posted by marthaman
I'm not sure that you'll be able to drive it as a boom box with a battery powered amp.

That has *nothing* to do with it. That is a high efficiency driver, it is actually a great choice for a low powered amp application.

Back to the original question, you can make a decent battery amp out of several of the National amp chips, but of course there are plenty of kits too. Do you prefer kit or scratchbuilt?

inrank · 2nd August 2007, 09:26 AM

well ive never made an amp before, just diy speakers really, so kit is best bet

Saturnus · 2nd August 2007, 09:41 AM

Any reason you can't use a T-amp or a tripath based kit and parallel the channels? It would save a lot of battery for you.

My first boombox was a mono one built around this amp:

It's $15 from www.brinck.dk (it's the BR320, and is 17watts mono into 3 Ohm @ 14V) but I'm sure you easily find another kit cheaper, or just bird's nest one.

My boombox since evolved into this:

The Boominator - another stab at the ultimate party machine

seek · 13th November 2007, 11:25 PM

I'm wanting to do something similar. Basically, the idea is to make a luggable boombox-type-thing.

The starting point is going to be a JBL Control 1 (4 ohm, 150w rms). I'd then like to squeeze a class-d (class-t?) amp module and a lithium polymer (so 11.1v or 14.8v) pack inside the speaker case.

As I understand it, tripath amps cant be bridged. Anyone have any recommendations for amp modules?

seek · 13th November 2007, 11:25 PM

I should probably stress that I am by no means experienced in working with electronics so a nice ready built module is definitely preferable

purplepeople · 21st December 2007, 06:46 PM

It's not actually a single driver. For full range, it seems that they turn it into a coaxial by mating it to an HF driver with a crossover. Since you can't bridge a Tripath, you could use one channel to drive the LF and the other to drive the HF with an PLLXO at the inputs.

:)ensen

goldkenn · 21st December 2007, 10:21 PM

Most simple is buy a car amp then power by car battery

31st July 2007, 04:44 PM	#1
inrank diyAudio Member Join Date: Oct 2005	Mono Battery powered Amp not sure if this is the right area to post this, but... i want to make a portable retro style 'boom box' with a single 10" Hawthorne Audio Silver Iris driver, that accepts a 3.5mm input from a portable DAB/ Ipod etc. just needs a volume control and a single output to the speaker. anyone know of any cheapish Mono Battery amps, preferably in a kit or something any ideas?

21st December 2007, 06:46 PM	#8
purplepeople diyAudio Member Join Date: Mar 2003 Location: London, Ontario, Canada	It's not actually a single driver. For full range, it seems that they turn it into a coaxial by mating it to an HF driver with a crossover. Since you can't bridge a Tripath, you could use one channel to drive the LF and the other to drive the HF with an PLLXO at the inputs. :)ensen __________________ Those who claim to be making history are often the same ones repeating it.

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1st August 2007, 11:30 PM	#2
marthaman diyAudio Member Join Date: Aug 2007	The specs on that speaker show that it can handle 150 watts (http://www.hawthorneaudio.com/drivers.htm). I'm not sure that you'll be able to drive it as a boom box with a battery powered amp. Perhaps I've misunderstood your post.

2nd August 2007, 09:26 AM	#4
inrank diyAudio Member Join Date: Oct 2005	well ive never made an amp before, just diy speakers really, so kit is best bet

2nd August 2007, 09:41 AM	#5
Saturnus diyAudio Member Join Date: Jun 2005 Location: Copenhagen, Denmark	Any reason you can't use a T-amp or a tripath based kit and parallel the channels? It would save a lot of battery for you. My first boombox was a mono one built around this amp: It's $15 from www.brinck.dk (it's the BR320, and is 17watts mono into 3 Ohm @ 14V) but I'm sure you easily find another kit cheaper, or just bird's nest one. My boombox since evolved into this: The Boominator - another stab at the ultimate party machine

13th November 2007, 11:25 PM	#6
seek diyAudio Member Join Date: May 2006	I'm wanting to do something similar. Basically, the idea is to make a luggable boombox-type-thing. The starting point is going to be a JBL Control 1 (4 ohm, 150w rms). I'd then like to squeeze a class-d (class-t?) amp module and a lithium polymer (so 11.1v or 14.8v) pack inside the speaker case. As I understand it, tripath amps cant be bridged. Anyone have any recommendations for amp modules?

21st December 2007, 10:21 PM	#9
goldkenn diyAudio Member Join Date: May 2005 Location: HK	Most simple is buy a car amp then power by car battery

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