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PostPosted: 12 Jun 2015, 18:08 
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Joined: 30 Nov 2014, 00:36
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I'm in the cable makeup stage. I want to be able to play my iPod through a tube amp inorder to introduce bandmates to possible tunes to cover. My current band room set up has a pair of Altec 1567a preamp/mixers and a pair of 1568a amps. Are there any mods to make this work, I have a variety of Altec transformers to try, the mixer is currently loaded with 4722's.

The question is are there any mods required to play an iPod through a tube amp? My current stereo in the same room has an unused ceramic phono inputs. The AUX has a CD and the tape and phono inputs are being used. I could use this if it would yield better results.

Any suggestion for the best results, I'd rather not make permanent mods since its never going to be a primary input source except in my car.


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PostPosted: 12 Jun 2015, 19:25 
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Just plug it into the CD or Aux input and let her rips.

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PostPosted: 24 Jan 2016, 05:28 
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Joined: 02 Mar 2009, 12:41
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Location: Vänersborg, Sweden
I have built two tube amps where I have installed iPod docking stations. I simply picked the signals from the built in phono connector and ran them into the amps through a selector switch. Unfortunately I haven't gotten that far as to fins a way to charge the iPod through the docking station.
Pics are for illustration only.

Attachment:
5998A-113.jpg


Attachment:
ipod-03.jpg


A - is where I drilled a hole through the dockings tation and into the amp chassis. B, C, D are two channels and gnd.


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PostPosted: 16 Feb 2017, 13:49 
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Joined: 15 Oct 2010, 17:50
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Ideal ... take the line level output from the 30-pin connector on the bottom of the iPod.

Adequate ... take the headphone amplifier's output from the 3.5mm stereo phone connector on the top of the iPod..


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PostPosted: 16 Feb 2017, 15:47 
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Have to check that up - what pins of the 30 are used to send music.

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PostPosted: 15 Mar 2017, 00:04 
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I have it somewhere but probably on a backup drive I would have to search to find.

However, I didn't find it difficult to get the pinouts via a Google search. Not sure why I have to say it, but give that a try. Perhaps much easier, you can easily purchase cables with a 30-pin to dual RCA configuration, done for you at little cost. Some will also have a power connector for charging also.

If nothing else, it's an easy way to do a continuity check to read the pinouts directly if you want to build your own cables.

I even have some blank 30 pin connectors somewhere; PM me and I'll get one out to you if you cover my cost.

The iPod's line out is standard as far as specifications go; appropriate output impedance for a line level device and about 750mV for full output. It should pose no problems for any modern and many primitive amplifiers, Solid State or Vacuum State. Some British audio (eg QUAD) will have a 500mV input sensitivity, but that is generally rare in anything made elsewhere.


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PostPosted: 15 Mar 2017, 06:35 
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Thanks for you kind offer!
Found the pinout andf I have some more docking stations to use.

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