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low volume with iphone

PostPosted: Sat Dec 19, 2015 7:40 am
by djonesii
got the clemintine all wired up with edcors in UL

using iphone as source,it seems that the watts output is very low. relative to a 15w class d amp, seems the volume only goes to 4

not using a pre amp.

speakers are a 3in single driver in open baffle test set up.

so, is this normal?

next test is with DVD instead of iphone

Dave
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Re: low volume with iphone

PostPosted: Sat Dec 19, 2015 12:20 pm
by Geek
You need a preamp.

An iPhone is not designed to drive an amp direct, just earbuds ;)

Re: low volume with iphone

PostPosted: Sat Dec 19, 2015 6:11 pm
by djonesii
Put it in the living room on some more efficient speakers, driven by a Raspberry Pi with a USB DAC, and things are much much better!

Still not the same volume as my chip amp though ... Very different sound

Set up in a wooden temp chassis ...

ampClem.GIF
ampClem.GIF (327.05 KiB) Viewed 11000 times


How long should it take for tubes to break in? .... about 30 hours seems to stick in mind

Re: low volume with iphone

PostPosted: Sat Dec 19, 2015 6:16 pm
by djonesii
I forgot to add, does fill the living room with more that loud enough sound for the way I listen to the Blues these days.

In younger days, more watts was better =:o

Re: low volume with iphone

PostPosted: Mon Dec 21, 2015 9:35 pm
by TomMcNally
The Darling Clementine is only 3/4 of a watt per channel. It's not going to compete with a 15 watt amp.

There is no break in time. Those tubes are 70+ years old. They warm right up and play music in 15 seconds !

Re: low volume with iphone

PostPosted: Tue Dec 22, 2015 9:59 am
by djonesii
cough ... cough.... a clear case of RTFM going on by ME here.

Clearly in the UL hookup, the PDF listed in the sticky part of this thread says that in this mode, I cannot use an Ipod to drive it, by extension, that applies to an iPhone as well.

However, there are measurements listed for 7W in the manual. I read that to be PER Chanel, so a Celm in UL with 6L6GC = ~14W ??

Dave