part of the problem is bluetooth is a two way system, so even if the transmitter is more powerful, it might tnot receive the acknowledgement to work. one thing to make sure of is that your bluetooth transmitter is as far a spossible from any metal surface. using a  usb extension cable and putting it up high, or angling it from the wire if it is small enough up high on the wall can help quit a bit.  same goes for the speaker, it has to be kept clear of all metal, also remember that at 2.4 ghz any walls or cabinets appear as reflecting surfaces, so moving the bluetooth transmitter or speaker a few feet can often make a hue difference. 900 mhz wireless speakers are available and have a good range in mose cases.
On Aug 11, 2013, at 11:44 AM, Butch Bussen <[log in to unmask]> wrote:

> My suggestion would be an fm  transmitter.  I have one I bought on ebay 
> for around $55, it runs on 12 volts and warns you about not turning it 
> on without an antenna.  Runs 5 or 1 watt.  1 watt although not legal, 
> probably wouldn't bother much and it would certainly reach all over the 
> house.  Crane has one, which is legal, but the one I tried didn't have 
> much range.
> You could also go with some kind of wireless speaker system.
> 73
> Butch
> WA0VJR
> Node 3148
> Wallace, ks.
> 
> 
> On Sat, 10 
> Aug 2013, don bishop wrote:
> 
>> Hi all,
>> 
>> We have a computer with lots of music on it and would like to be able to
>> listen in other rooms in the house with a bluetooth speaker.  We've
>> tried several transmitters, but the range isn't very good which is to be
>> expected.
>> 
>> I've heard of transmitters that are supposed to have an extended range,
>> but I've yet to see one which lives up to their claims.
>> 
>> Does anyone happen to know of a bluetooth transmitter with more than the
>> average bluetooth range of about 30 feet?
>> 
>> Thanks,
>> 
>> 
>> Don
>> 
>>